#define DEBUG_TYPE "instcombine"
#include "llvm/Transforms/Scalar.h"
#include "llvm/IntrinsicInst.h"
+#include "llvm/LLVMContext.h"
#include "llvm/Pass.h"
#include "llvm/DerivedTypes.h"
#include "llvm/GlobalVariable.h"
+#include "llvm/Operator.h"
#include "llvm/Analysis/ConstantFolding.h"
#include "llvm/Analysis/ValueTracking.h"
#include "llvm/Target/TargetData.h"
#include "llvm/Support/CallSite.h"
#include "llvm/Support/ConstantRange.h"
#include "llvm/Support/Debug.h"
+#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/GetElementPtrTypeIterator.h"
#include "llvm/Support/InstVisitor.h"
#include "llvm/Support/MathExtras.h"
static char ID; // Pass identification, replacement for typeid
InstCombiner() : FunctionPass(&ID) {}
+ LLVMContext *Context;
+ LLVMContext *getContext() const { return Context; }
+
/// AddToWorkList - Add the specified instruction to the worklist if it
/// isn't already in it.
void AddToWorkList(Instruction *I) {
if (Instruction *Op = dyn_cast<Instruction>(*i)) {
AddToWorkList(Op);
// Set the operand to undef to drop the use.
- *i = UndefValue::get(Op->getType());
+ *i = Context->getUndef(Op->getType());
}
return R;
bool DoOneIteration(Function &F, unsigned ItNum);
virtual void getAnalysisUsage(AnalysisUsage &AU) const {
- AU.addRequired<TargetData>();
AU.addPreservedID(LCSSAID);
AU.setPreservesCFG();
}
- TargetData &getTargetData() const { return *TD; }
+ TargetData *getTargetData() const { return TD; }
// Visitation implementation - Implement instruction combining for different
// instruction types. The semantics are as follows:
Instruction *visitSDiv(BinaryOperator &I);
Instruction *visitFDiv(BinaryOperator &I);
Instruction *FoldAndOfICmps(Instruction &I, ICmpInst *LHS, ICmpInst *RHS);
+ Instruction *FoldAndOfFCmps(Instruction &I, FCmpInst *LHS, FCmpInst *RHS);
Instruction *visitAnd(BinaryOperator &I);
Instruction *FoldOrOfICmps(Instruction &I, ICmpInst *LHS, ICmpInst *RHS);
+ Instruction *FoldOrOfFCmps(Instruction &I, FCmpInst *LHS, FCmpInst *RHS);
Instruction *FoldOrWithConstants(BinaryOperator &I, Value *Op,
Value *A, Value *B, Value *C);
Instruction *visitOr (BinaryOperator &I);
if (V->getType() == Ty) return V;
if (Constant *CV = dyn_cast<Constant>(V))
- return ConstantExpr::getCast(opc, CV, Ty);
+ return Context->getConstantExprCast(opc, CV, Ty);
Instruction *C = CastInst::Create(opc, V, Ty, V->getName(), &Pos);
AddToWorkList(C);
} else {
// If we are replacing the instruction with itself, this must be in a
// segment of unreachable code, so just clobber the instruction.
- I.replaceAllUsesWith(UndefValue::get(I.getType()));
+ I.replaceAllUsesWith(Context->getUndef(I.getType()));
return &I;
}
}
// getComplexity: Assign a complexity or rank value to LLVM Values...
// 0 -> undef, 1 -> Const, 2 -> Other, 3 -> Arg, 3 -> Unary, 4 -> OtherInst
-static unsigned getComplexity(Value *V) {
+static unsigned getComplexity(LLVMContext *Context, Value *V) {
if (isa<Instruction>(V)) {
- if (BinaryOperator::isNeg(V) || BinaryOperator::isFNeg(V) ||
+ if (BinaryOperator::isNeg(V) ||
+ BinaryOperator::isFNeg(V) ||
BinaryOperator::isNot(V))
return 3;
return 4;
/// expression bitcast, or a GetElementPtrInst with all zero indices, return the
/// operand value, otherwise return null.
static Value *getBitCastOperand(Value *V) {
- if (BitCastInst *I = dyn_cast<BitCastInst>(V))
- // BitCastInst?
- return I->getOperand(0);
- else if (GetElementPtrInst *GEP = dyn_cast<GetElementPtrInst>(V)) {
- // GetElementPtrInst?
- if (GEP->hasAllZeroIndices())
- return GEP->getOperand(0);
- } else if (ConstantExpr *CE = dyn_cast<ConstantExpr>(V)) {
- if (CE->getOpcode() == Instruction::BitCast)
- // BitCast ConstantExp?
- return CE->getOperand(0);
- else if (CE->getOpcode() == Instruction::GetElementPtr) {
- // GetElementPtr ConstantExp?
- for (User::op_iterator I = CE->op_begin() + 1, E = CE->op_end();
- I != E; ++I) {
- ConstantInt *CI = dyn_cast<ConstantInt>(I);
- if (!CI || !CI->isZero())
- // Any non-zero indices? Not cast-like.
- return 0;
- }
- // All-zero indices? This is just like casting.
- return CE->getOperand(0);
- }
+ if (Operator *O = dyn_cast<Operator>(V)) {
+ if (O->getOpcode() == Instruction::BitCast)
+ return O->getOperand(0);
+ if (GEPOperator *GEP = dyn_cast<GEPOperator>(V))
+ if (GEP->hasAllZeroIndices())
+ return GEP->getPointerOperand();
}
return 0;
}
const Type *DstTy, ///< The target type for the second cast instruction
TargetData *TD ///< The target data for pointer size
) {
-
+
const Type *SrcTy = CI->getOperand(0)->getType(); // A from above
const Type *MidTy = CI->getType(); // B from above
Instruction::CastOps secondOp = Instruction::CastOps(opcode);
unsigned Res = CastInst::isEliminableCastPair(firstOp, secondOp, SrcTy, MidTy,
- DstTy, TD->getIntPtrType());
+ DstTy,
+ TD ? TD->getIntPtrType() : 0);
// We don't want to form an inttoptr or ptrtoint that converts to an integer
// type that differs from the pointer size.
// If this is another cast that can be eliminated, it isn't codegen either.
if (const CastInst *CI = dyn_cast<CastInst>(V))
- if (isEliminableCastPair(CI, opcode, Ty, TD))
+ if (isEliminableCastPair(CI, opcode, Ty, TD))
return false;
return true;
}
//
bool InstCombiner::SimplifyCommutative(BinaryOperator &I) {
bool Changed = false;
- if (getComplexity(I.getOperand(0)) < getComplexity(I.getOperand(1)))
+ if (getComplexity(Context, I.getOperand(0)) <
+ getComplexity(Context, I.getOperand(1)))
Changed = !I.swapOperands();
if (!I.isAssociative()) return Changed;
if (BinaryOperator *Op = dyn_cast<BinaryOperator>(I.getOperand(0)))
if (Op->getOpcode() == Opcode && isa<Constant>(Op->getOperand(1))) {
if (isa<Constant>(I.getOperand(1))) {
- Constant *Folded = ConstantExpr::get(I.getOpcode(),
+ Constant *Folded = Context->getConstantExpr(I.getOpcode(),
cast<Constant>(I.getOperand(1)),
cast<Constant>(Op->getOperand(1)));
I.setOperand(0, Op->getOperand(0));
Constant *C2 = cast<Constant>(Op1->getOperand(1));
// Fold (op (op V1, C1), (op V2, C2)) ==> (op (op V1, V2), (op C1,C2))
- Constant *Folded = ConstantExpr::get(I.getOpcode(), C1, C2);
+ Constant *Folded = Context->getConstantExpr(I.getOpcode(), C1, C2);
Instruction *New = BinaryOperator::Create(Opcode, Op->getOperand(0),
Op1->getOperand(0),
Op1->getName(), &I);
/// so that theyare listed from right (least complex) to left (most complex).
/// This puts constants before unary operators before binary operators.
bool InstCombiner::SimplifyCompare(CmpInst &I) {
- if (getComplexity(I.getOperand(0)) >= getComplexity(I.getOperand(1)))
+ if (getComplexity(Context, I.getOperand(0)) >=
+ getComplexity(Context, I.getOperand(1)))
return false;
I.swapOperands();
// Compare instructions are not associative so there's nothing else we can do.
// dyn_castNegVal - Given a 'sub' instruction, return the RHS of the instruction
// if the LHS is a constant zero (which is the 'negate' form).
//
-static inline Value *dyn_castNegVal(Value *V) {
+static inline Value *dyn_castNegVal(Value *V, LLVMContext *Context) {
if (BinaryOperator::isNeg(V))
return BinaryOperator::getNegArgument(V);
// Constants can be considered to be negated values if they can be folded.
if (ConstantInt *C = dyn_cast<ConstantInt>(V))
- return ConstantExpr::getNeg(C);
+ return Context->getConstantExprNeg(C);
if (ConstantVector *C = dyn_cast<ConstantVector>(V))
if (C->getType()->getElementType()->isInteger())
- return ConstantExpr::getNeg(C);
+ return Context->getConstantExprNeg(C);
return 0;
}
// instruction if the LHS is a constant negative zero (which is the 'negate'
// form).
//
-static inline Value *dyn_castFNegVal(Value *V) {
+static inline Value *dyn_castFNegVal(Value *V, LLVMContext *Context) {
if (BinaryOperator::isFNeg(V))
return BinaryOperator::getFNegArgument(V);
// Constants can be considered to be negated values if they can be folded.
if (ConstantFP *C = dyn_cast<ConstantFP>(V))
- return ConstantExpr::getFNeg(C);
+ return Context->getConstantExprFNeg(C);
if (ConstantVector *C = dyn_cast<ConstantVector>(V))
if (C->getType()->getElementType()->isFloatingPoint())
- return ConstantExpr::getFNeg(C);
+ return Context->getConstantExprFNeg(C);
return 0;
}
-static inline Value *dyn_castNotVal(Value *V) {
+static inline Value *dyn_castNotVal(Value *V, LLVMContext *Context) {
if (BinaryOperator::isNot(V))
return BinaryOperator::getNotArgument(V);
// Constants can be considered to be not'ed values...
if (ConstantInt *C = dyn_cast<ConstantInt>(V))
- return ConstantInt::get(~C->getValue());
+ return ConstantInt::get(*Context, ~C->getValue());
return 0;
}
// non-constant operand of the multiply, and set CST to point to the multiplier.
// Otherwise, return null.
//
-static inline Value *dyn_castFoldableMul(Value *V, ConstantInt *&CST) {
+static inline Value *dyn_castFoldableMul(Value *V, ConstantInt *&CST,
+ LLVMContext *Context) {
if (V->hasOneUse() && V->getType()->isInteger())
if (Instruction *I = dyn_cast<Instruction>(V)) {
if (I->getOpcode() == Instruction::Mul)
// The multiplier is really 1 << CST.
uint32_t BitWidth = cast<IntegerType>(V->getType())->getBitWidth();
uint32_t CSTVal = CST->getLimitedValue(BitWidth);
- CST = ConstantInt::get(APInt(BitWidth, 1).shl(CSTVal));
+ CST = ConstantInt::get(*Context, APInt(BitWidth, 1).shl(CSTVal));
return I->getOperand(0);
}
}
return false;
}
-/// getOpcode - If this is an Instruction or a ConstantExpr, return the
-/// opcode value. Otherwise return UserOp1.
-static unsigned getOpcode(const Value *V) {
- if (const Instruction *I = dyn_cast<Instruction>(V))
- return I->getOpcode();
- if (const ConstantExpr *CE = dyn_cast<ConstantExpr>(V))
- return CE->getOpcode();
- // Use UserOp1 to mean there's no opcode.
- return Instruction::UserOp1;
-}
-
/// AddOne - Add one to a ConstantInt
-static Constant *AddOne(Constant *C) {
- return ConstantExpr::getAdd(C, ConstantInt::get(C->getType(), 1));
+static Constant *AddOne(Constant *C, LLVMContext *Context) {
+ return Context->getConstantExprAdd(C,
+ ConstantInt::get(C->getType(), 1));
}
/// SubOne - Subtract one from a ConstantInt
-static Constant *SubOne(ConstantInt *C) {
- return ConstantExpr::getSub(C, ConstantInt::get(C->getType(), 1));
+static Constant *SubOne(ConstantInt *C, LLVMContext *Context) {
+ return Context->getConstantExprSub(C,
+ ConstantInt::get(C->getType(), 1));
}
/// MultiplyOverflows - True if the multiply can not be expressed in an int
/// this size.
-static bool MultiplyOverflows(ConstantInt *C1, ConstantInt *C2, bool sign) {
+static bool MultiplyOverflows(ConstantInt *C1, ConstantInt *C2, bool sign,
+ LLVMContext *Context) {
uint32_t W = C1->getBitWidth();
APInt LHSExt = C1->getValue(), RHSExt = C2->getValue();
if (sign) {
/// are any bits set in the constant that are not demanded. If so, shrink the
/// constant and return true.
static bool ShrinkDemandedConstant(Instruction *I, unsigned OpNo,
- APInt Demanded) {
+ APInt Demanded, LLVMContext *Context) {
assert(I && "No instruction?");
assert(OpNo < I->getNumOperands() && "Operand index too large");
// This instruction is producing bits that are not demanded. Shrink the RHS.
Demanded &= OpC->getValue();
- I->setOperand(OpNo, ConstantInt::get(Demanded));
+ I->setOperand(OpNo, ConstantInt::get(*Context, Demanded));
return true;
}
if (DemandedMask == 0) { // Not demanding any bits from V.
if (isa<UndefValue>(V))
return 0;
- return UndefValue::get(VTy);
+ return Context->getUndef(VTy);
}
if (Depth == 6) // Limit search depth.
// If all of the demanded bits in the inputs are known zeros, return zero.
if ((DemandedMask & (RHSKnownZero|LHSKnownZero)) == DemandedMask)
- return Constant::getNullValue(VTy);
+ return Context->getNullValue(VTy);
} else if (I->getOpcode() == Instruction::Or) {
// We can simplify (X|Y) -> X or Y in the user's context if we know that
// If all of the demanded bits in the inputs are known zeros, return zero.
if ((DemandedMask & (RHSKnownZero|LHSKnownZero)) == DemandedMask)
- return Constant::getNullValue(VTy);
+ return Context->getNullValue(VTy);
// If the RHS is a constant, see if we can simplify it.
- if (ShrinkDemandedConstant(I, 1, DemandedMask & ~LHSKnownZero))
+ if (ShrinkDemandedConstant(I, 1, DemandedMask & ~LHSKnownZero, Context))
return I;
// Output known-1 bits are only known if set in both the LHS & RHS.
return I->getOperand(1);
// If the RHS is a constant, see if we can simplify it.
- if (ShrinkDemandedConstant(I, 1, DemandedMask))
+ if (ShrinkDemandedConstant(I, 1, DemandedMask, Context))
return I;
// Output known-0 bits are only known if clear in both the LHS & RHS.
if ((DemandedMask & (RHSKnownZero|RHSKnownOne)) == DemandedMask) {
// all known
if ((RHSKnownOne & LHSKnownOne) == RHSKnownOne) {
- Constant *AndC = ConstantInt::get(~RHSKnownOne & DemandedMask);
+ Constant *AndC = ConstantInt::get(*Context,
+ ~RHSKnownOne & DemandedMask);
Instruction *And =
BinaryOperator::CreateAnd(I->getOperand(0), AndC, "tmp");
return InsertNewInstBefore(And, *I);
// If the RHS is a constant, see if we can simplify it.
// FIXME: for XOR, we prefer to force bits to 1 if they will make a -1.
- if (ShrinkDemandedConstant(I, 1, DemandedMask))
+ if (ShrinkDemandedConstant(I, 1, DemandedMask, Context))
return I;
RHSKnownZero = KnownZeroOut;
assert(!(LHSKnownZero & LHSKnownOne) && "Bits known to be one AND zero?");
// If the operands are constants, see if we can simplify them.
- if (ShrinkDemandedConstant(I, 1, DemandedMask) ||
- ShrinkDemandedConstant(I, 2, DemandedMask))
+ if (ShrinkDemandedConstant(I, 1, DemandedMask, Context) ||
+ ShrinkDemandedConstant(I, 2, DemandedMask, Context))
return I;
// Only known if known in both the LHS and RHS.
// If the RHS of the add has bits set that can't affect the input, reduce
// the constant.
- if (ShrinkDemandedConstant(I, 1, InDemandedBits))
+ if (ShrinkDemandedConstant(I, 1, InDemandedBits, Context))
return I;
// Avoid excess work.
// If the client is only demanding bits that we know, return the known
// constant.
if ((DemandedMask & (RHSKnownZero|RHSKnownOne)) == DemandedMask) {
- Constant *C = ConstantInt::get(RHSKnownOne);
+ Constant *C = ConstantInt::get(*Context, RHSKnownOne);
if (isa<PointerType>(V->getType()))
- C = ConstantExpr::getIntToPtr(C, V->getType());
+ C = Context->getConstantExprIntToPtr(C, V->getType());
return C;
}
return false;
return 0;
} else if (DemandedElts == 0) { // If nothing is demanded, provide undef.
UndefElts = EltMask;
- return UndefValue::get(V->getType());
+ return Context->getUndef(V->getType());
}
UndefElts = 0;
if (ConstantVector *CP = dyn_cast<ConstantVector>(V)) {
const Type *EltTy = cast<VectorType>(V->getType())->getElementType();
- Constant *Undef = UndefValue::get(EltTy);
+ Constant *Undef = Context->getUndef(EltTy);
std::vector<Constant*> Elts;
for (unsigned i = 0; i != VWidth; ++i)
}
// If we changed the constant, return it.
- Constant *NewCP = ConstantVector::get(Elts);
+ Constant *NewCP = Context->getConstantVector(Elts);
return NewCP != CP ? NewCP : 0;
} else if (isa<ConstantAggregateZero>(V)) {
// Simplify the CAZ to a ConstantVector where the non-demanded elements are
return 0;
const Type *EltTy = cast<VectorType>(V->getType())->getElementType();
- Constant *Zero = Constant::getNullValue(EltTy);
- Constant *Undef = UndefValue::get(EltTy);
+ Constant *Zero = Context->getNullValue(EltTy);
+ Constant *Undef = Context->getUndef(EltTy);
std::vector<Constant*> Elts;
for (unsigned i = 0; i != VWidth; ++i) {
Constant *Elt = DemandedElts[i] ? Zero : Undef;
Elts.push_back(Elt);
}
UndefElts = DemandedElts ^ EltMask;
- return ConstantVector::get(Elts);
+ return Context->getConstantVector(Elts);
}
// Limit search depth.
std::vector<Constant*> Elts;
for (unsigned i = 0; i < VWidth; ++i) {
if (UndefElts[i])
- Elts.push_back(UndefValue::get(Type::Int32Ty));
+ Elts.push_back(Context->getUndef(Type::Int32Ty));
else
Elts.push_back(ConstantInt::get(Type::Int32Ty,
Shuffle->getMaskValue(i)));
}
- I->setOperand(2, ConstantVector::get(Elts));
+ I->setOperand(2, Context->getConstantVector(Elts));
MadeChange = true;
}
break;
UndefElts = UndefElts2;
if (VWidth > InVWidth) {
- assert(0 && "Unimp");
+ llvm_unreachable("Unimp");
// If there are more elements in the result than there are in the source,
// then an output element is undef if the corresponding input element is
// undef.
if (UndefElts2[OutIdx/Ratio])
UndefElts.set(OutIdx);
} else if (VWidth < InVWidth) {
- assert(0 && "Unimp");
+ llvm_unreachable("Unimp");
// If there are more elements in the source than there are in the result,
// then a result element is undef if all of the corresponding input
// elements are undef.
Value *LHS = II->getOperand(1);
Value *RHS = II->getOperand(2);
// Extract the element as scalars.
- LHS = InsertNewInstBefore(new ExtractElementInst(LHS, 0U,"tmp"), *II);
- RHS = InsertNewInstBefore(new ExtractElementInst(RHS, 0U,"tmp"), *II);
+ LHS = InsertNewInstBefore(new ExtractElementInst(LHS,
+ ConstantInt::get(Type::Int32Ty, 0U, false), "tmp"), *II);
+ RHS = InsertNewInstBefore(new ExtractElementInst(RHS,
+ ConstantInt::get(Type::Int32Ty, 0U, false), "tmp"), *II);
switch (II->getIntrinsicID()) {
- default: assert(0 && "Case stmts out of sync!");
+ default: llvm_unreachable("Case stmts out of sync!");
case Intrinsic::x86_sse_sub_ss:
case Intrinsic::x86_sse2_sub_sd:
TmpV = InsertNewInstBefore(BinaryOperator::CreateFSub(LHS, RHS,
}
Instruction *New =
- InsertElementInst::Create(UndefValue::get(II->getType()), TmpV, 0U,
- II->getName());
+ InsertElementInst::Create(
+ Context->getUndef(II->getType()), TmpV,
+ ConstantInt::get(Type::Int32Ty, 0U, false), II->getName());
InsertNewInstBefore(New, *II);
AddSoonDeadInstToWorklist(*II, 0);
return New;
/// 'shouldApply' and 'apply' methods.
///
template<typename Functor>
-static Instruction *AssociativeOpt(BinaryOperator &Root, const Functor &F) {
+static Instruction *AssociativeOpt(BinaryOperator &Root, const Functor &F,
+ LLVMContext *Context) {
unsigned Opcode = Root.getOpcode();
Value *LHS = Root.getOperand(0);
// Make what used to be the LHS of the root be the user of the root...
Value *ExtraOperand = TmpLHSI->getOperand(1);
if (&Root == TmpLHSI) {
- Root.replaceAllUsesWith(Constant::getNullValue(TmpLHSI->getType()));
+ Root.replaceAllUsesWith(Context->getNullValue(TmpLHSI->getType()));
return 0;
}
Root.replaceAllUsesWith(TmpLHSI); // Users now use TmpLHSI
// AddRHS - Implements: X + X --> X << 1
struct AddRHS {
Value *RHS;
- AddRHS(Value *rhs) : RHS(rhs) {}
+ LLVMContext *Context;
+ AddRHS(Value *rhs, LLVMContext *C) : RHS(rhs), Context(C) {}
bool shouldApply(Value *LHS) const { return LHS == RHS; }
Instruction *apply(BinaryOperator &Add) const {
return BinaryOperator::CreateShl(Add.getOperand(0),
// iff C1&C2 == 0
struct AddMaskingAnd {
Constant *C2;
- AddMaskingAnd(Constant *c) : C2(c) {}
+ LLVMContext *Context;
+ AddMaskingAnd(Constant *c, LLVMContext *C) : C2(c), Context(C) {}
bool shouldApply(Value *LHS) const {
ConstantInt *C1;
- return match(LHS, m_And(m_Value(), m_ConstantInt(C1))) &&
- ConstantExpr::getAnd(C1, C2)->isNullValue();
+ return match(LHS, m_And(m_Value(), m_ConstantInt(C1)), *Context) &&
+ Context->getConstantExprAnd(C1, C2)->isNullValue();
}
Instruction *apply(BinaryOperator &Add) const {
return BinaryOperator::CreateOr(Add.getOperand(0), Add.getOperand(1));
static Value *FoldOperationIntoSelectOperand(Instruction &I, Value *SO,
InstCombiner *IC) {
+ LLVMContext *Context = IC->getContext();
+
if (CastInst *CI = dyn_cast<CastInst>(&I)) {
return IC->InsertCastBefore(CI->getOpcode(), SO, I.getType(), I);
}
if (Constant *SOC = dyn_cast<Constant>(SO)) {
if (ConstIsRHS)
- return ConstantExpr::get(I.getOpcode(), SOC, ConstOperand);
- return ConstantExpr::get(I.getOpcode(), ConstOperand, SOC);
+ return Context->getConstantExpr(I.getOpcode(), SOC, ConstOperand);
+ return Context->getConstantExpr(I.getOpcode(), ConstOperand, SOC);
}
Value *Op0 = SO, *Op1 = ConstOperand;
if (BinaryOperator *BO = dyn_cast<BinaryOperator>(&I))
New = BinaryOperator::Create(BO->getOpcode(), Op0, Op1,SO->getName()+".op");
else if (CmpInst *CI = dyn_cast<CmpInst>(&I))
- New = CmpInst::Create(CI->getOpcode(), CI->getPredicate(), Op0, Op1,
- SO->getName()+".cmp");
+ New = CmpInst::Create(*Context, CI->getOpcode(), CI->getPredicate(),
+ Op0, Op1, SO->getName()+".cmp");
else {
- assert(0 && "Unknown binary instruction type!");
- abort();
+ llvm_unreachable("Unknown binary instruction type!");
}
return IC->InsertNewInstBefore(New, I);
}
Value *InV = 0;
if (Constant *InC = dyn_cast<Constant>(PN->getIncomingValue(i))) {
if (CmpInst *CI = dyn_cast<CmpInst>(&I))
- InV = ConstantExpr::getCompare(CI->getPredicate(), InC, C);
+ InV = Context->getConstantExprCompare(CI->getPredicate(), InC, C);
else
- InV = ConstantExpr::get(I.getOpcode(), InC, C);
+ InV = Context->getConstantExpr(I.getOpcode(), InC, C);
} else {
assert(PN->getIncomingBlock(i) == NonConstBB);
if (BinaryOperator *BO = dyn_cast<BinaryOperator>(&I))
PN->getIncomingValue(i), C, "phitmp",
NonConstBB->getTerminator());
else if (CmpInst *CI = dyn_cast<CmpInst>(&I))
- InV = CmpInst::Create(CI->getOpcode(),
+ InV = CmpInst::Create(*Context, CI->getOpcode(),
CI->getPredicate(),
PN->getIncomingValue(i), C, "phitmp",
NonConstBB->getTerminator());
else
- assert(0 && "Unknown binop!");
+ llvm_unreachable("Unknown binop!");
AddToWorkList(cast<Instruction>(InV));
}
for (unsigned i = 0; i != NumPHIValues; ++i) {
Value *InV;
if (Constant *InC = dyn_cast<Constant>(PN->getIncomingValue(i))) {
- InV = ConstantExpr::getCast(CI->getOpcode(), InC, RetTy);
+ InV = Context->getConstantExprCast(CI->getOpcode(), InC, RetTy);
} else {
assert(PN->getIncomingBlock(i) == NonConstBB);
InV = CastInst::Create(CI->getOpcode(), PN->getIncomingValue(i),
if (SimplifyDemandedInstructionBits(I))
return &I;
- // zext(i1) - 1 -> select i1, 0, -1
+ // zext(bool) + C -> bool ? C + 1 : C
if (ZExtInst *ZI = dyn_cast<ZExtInst>(LHS))
- if (CI->isAllOnesValue() &&
- ZI->getOperand(0)->getType() == Type::Int1Ty)
- return SelectInst::Create(ZI->getOperand(0),
- Constant::getNullValue(I.getType()),
- ConstantInt::getAllOnesValue(I.getType()));
+ if (ZI->getSrcTy() == Type::Int1Ty)
+ return SelectInst::Create(ZI->getOperand(0), AddOne(CI, Context), CI);
}
if (isa<PHINode>(LHS))
ConstantInt *XorRHS = 0;
Value *XorLHS = 0;
if (isa<ConstantInt>(RHSC) &&
- match(LHS, m_Xor(m_Value(XorLHS), m_ConstantInt(XorRHS)))) {
+ match(LHS, m_Xor(m_Value(XorLHS), m_ConstantInt(XorRHS)), *Context)) {
uint32_t TySizeBits = I.getType()->getScalarSizeInBits();
const APInt& RHSVal = cast<ConstantInt>(RHSC)->getValue();
// X + X --> X << 1
if (I.getType()->isInteger()) {
- if (Instruction *Result = AssociativeOpt(I, AddRHS(RHS))) return Result;
+ if (Instruction *Result = AssociativeOpt(I, AddRHS(RHS, Context), Context))
+ return Result;
if (Instruction *RHSI = dyn_cast<Instruction>(RHS)) {
if (RHSI->getOpcode() == Instruction::Sub)
// -A + B --> B - A
// -A + -B --> -(A + B)
- if (Value *LHSV = dyn_castNegVal(LHS)) {
+ if (Value *LHSV = dyn_castNegVal(LHS, Context)) {
if (LHS->getType()->isIntOrIntVector()) {
- if (Value *RHSV = dyn_castNegVal(RHS)) {
+ if (Value *RHSV = dyn_castNegVal(RHS, Context)) {
Instruction *NewAdd = BinaryOperator::CreateAdd(LHSV, RHSV, "sum");
InsertNewInstBefore(NewAdd, I);
- return BinaryOperator::CreateNeg(NewAdd);
+ return BinaryOperator::CreateNeg(*Context, NewAdd);
}
}
// A + -B --> A - B
if (!isa<Constant>(RHS))
- if (Value *V = dyn_castNegVal(RHS))
+ if (Value *V = dyn_castNegVal(RHS, Context))
return BinaryOperator::CreateSub(LHS, V);
ConstantInt *C2;
- if (Value *X = dyn_castFoldableMul(LHS, C2)) {
+ if (Value *X = dyn_castFoldableMul(LHS, C2, Context)) {
if (X == RHS) // X*C + X --> X * (C+1)
- return BinaryOperator::CreateMul(RHS, AddOne(C2));
+ return BinaryOperator::CreateMul(RHS, AddOne(C2, Context));
// X*C1 + X*C2 --> X * (C1+C2)
ConstantInt *C1;
- if (X == dyn_castFoldableMul(RHS, C1))
- return BinaryOperator::CreateMul(X, ConstantExpr::getAdd(C1, C2));
+ if (X == dyn_castFoldableMul(RHS, C1, Context))
+ return BinaryOperator::CreateMul(X, Context->getConstantExprAdd(C1, C2));
}
// X + X*C --> X * (C+1)
- if (dyn_castFoldableMul(RHS, C2) == LHS)
- return BinaryOperator::CreateMul(LHS, AddOne(C2));
+ if (dyn_castFoldableMul(RHS, C2, Context) == LHS)
+ return BinaryOperator::CreateMul(LHS, AddOne(C2, Context));
// X + ~X --> -1 since ~X = -X-1
- if (dyn_castNotVal(LHS) == RHS || dyn_castNotVal(RHS) == LHS)
- return ReplaceInstUsesWith(I, Constant::getAllOnesValue(I.getType()));
+ if (dyn_castNotVal(LHS, Context) == RHS ||
+ dyn_castNotVal(RHS, Context) == LHS)
+ return ReplaceInstUsesWith(I, Context->getAllOnesValue(I.getType()));
// (A & C1)+(B & C2) --> (A & C1)|(B & C2) iff C1&C2 == 0
- if (match(RHS, m_And(m_Value(), m_ConstantInt(C2))))
- if (Instruction *R = AssociativeOpt(I, AddMaskingAnd(C2)))
+ if (match(RHS, m_And(m_Value(), m_ConstantInt(C2)), *Context))
+ if (Instruction *R = AssociativeOpt(I, AddMaskingAnd(C2, Context), Context))
return R;
// A+B --> A|B iff A and B have no bits set in common.
// W*X + Y*Z --> W * (X+Z) iff W == Y
if (I.getType()->isIntOrIntVector()) {
Value *W, *X, *Y, *Z;
- if (match(LHS, m_Mul(m_Value(W), m_Value(X))) &&
- match(RHS, m_Mul(m_Value(Y), m_Value(Z)))) {
+ if (match(LHS, m_Mul(m_Value(W), m_Value(X)), *Context) &&
+ match(RHS, m_Mul(m_Value(Y), m_Value(Z)), *Context)) {
if (W != Y) {
if (W == Z) {
std::swap(Y, Z);
if (ConstantInt *CRHS = dyn_cast<ConstantInt>(RHS)) {
Value *X = 0;
- if (match(LHS, m_Not(m_Value(X)))) // ~X + C --> (C-1) - X
- return BinaryOperator::CreateSub(SubOne(CRHS), X);
+ if (match(LHS, m_Not(m_Value(X)), *Context)) // ~X + C --> (C-1) - X
+ return BinaryOperator::CreateSub(SubOne(CRHS, Context), X);
// (X & FF00) + xx00 -> (X+xx00) & FF00
- if (LHS->hasOneUse() && match(LHS, m_And(m_Value(X), m_ConstantInt(C2)))) {
- Constant *Anded = ConstantExpr::getAnd(CRHS, C2);
+ if (LHS->hasOneUse() &&
+ match(LHS, m_And(m_Value(X), m_ConstantInt(C2)), *Context)) {
+ Constant *Anded = Context->getConstantExprAnd(CRHS, C2);
if (Anded == CRHS) {
// See if all bits from the first bit set in the Add RHS up are included
// in the mask. First, get the rightmost bit.
return R;
}
- // add (cast *A to intptrtype) B ->
- // cast (GEP (cast *A to i8*) B) --> intptrtype
- {
- CastInst *CI = dyn_cast<CastInst>(LHS);
- Value *Other = RHS;
- if (!CI) {
- CI = dyn_cast<CastInst>(RHS);
- Other = LHS;
- }
- if (CI && CI->getType()->isSized() &&
- (CI->getType()->getScalarSizeInBits() ==
- TD->getIntPtrType()->getPrimitiveSizeInBits())
- && isa<PointerType>(CI->getOperand(0)->getType())) {
- unsigned AS =
- cast<PointerType>(CI->getOperand(0)->getType())->getAddressSpace();
- Value *I2 = InsertBitCastBefore(CI->getOperand(0),
- PointerType::get(Type::Int8Ty, AS), I);
- I2 = InsertNewInstBefore(GetElementPtrInst::Create(I2, Other, "ctg2"), I);
- return new PtrToIntInst(I2, CI->getType());
- }
- }
-
// add (select X 0 (sub n A)) A --> select X A n
{
SelectInst *SI = dyn_cast<SelectInst>(LHS);
// Can we fold the add into the argument of the select?
// We check both true and false select arguments for a matching subtract.
- if (match(FV, m_Zero()) && match(TV, m_Sub(m_Value(N), m_Specific(A))))
+ if (match(FV, m_Zero(), *Context) &&
+ match(TV, m_Sub(m_Value(N), m_Specific(A)), *Context))
// Fold the add into the true select value.
return SelectInst::Create(SI->getCondition(), N, A);
- if (match(TV, m_Zero()) && match(FV, m_Sub(m_Value(N), m_Specific(A))))
+ if (match(TV, m_Zero(), *Context) &&
+ match(FV, m_Sub(m_Value(N), m_Specific(A)), *Context))
// Fold the add into the false select value.
return SelectInst::Create(SI->getCondition(), A, N);
}
// (add (sext x), cst) --> (sext (add x, cst'))
if (ConstantInt *RHSC = dyn_cast<ConstantInt>(RHS)) {
Constant *CI =
- ConstantExpr::getTrunc(RHSC, LHSConv->getOperand(0)->getType());
+ Context->getConstantExprTrunc(RHSC, LHSConv->getOperand(0)->getType());
if (LHSConv->hasOneUse() &&
- ConstantExpr::getSExt(CI, I.getType()) == RHSC &&
+ Context->getConstantExprSExt(CI, I.getType()) == RHSC &&
WillNotOverflowSignedAdd(LHSConv->getOperand(0), CI)) {
// Insert the new, smaller add.
Instruction *NewAdd = BinaryOperator::CreateAdd(LHSConv->getOperand(0),
if (Constant *RHSC = dyn_cast<Constant>(RHS)) {
// X + 0 --> X
if (ConstantFP *CFP = dyn_cast<ConstantFP>(RHSC)) {
- if (CFP->isExactlyValue(ConstantFP::getNegativeZero
+ if (CFP->isExactlyValue(Context->getConstantFPNegativeZero
(I.getType())->getValueAPF()))
return ReplaceInstUsesWith(I, LHS);
}
// -A + B --> B - A
// -A + -B --> -(A + B)
- if (Value *LHSV = dyn_castFNegVal(LHS))
+ if (Value *LHSV = dyn_castFNegVal(LHS, Context))
return BinaryOperator::CreateFSub(RHS, LHSV);
// A + -B --> A - B
if (!isa<Constant>(RHS))
- if (Value *V = dyn_castFNegVal(RHS))
+ if (Value *V = dyn_castFNegVal(RHS, Context))
return BinaryOperator::CreateFSub(LHS, V);
// Check for X+0.0. Simplify it to X if we know X is not -0.0.
// instcombined.
if (ConstantFP *CFP = dyn_cast<ConstantFP>(RHS)) {
Constant *CI =
- ConstantExpr::getFPToSI(CFP, LHSConv->getOperand(0)->getType());
+ Context->getConstantExprFPToSI(CFP, LHSConv->getOperand(0)->getType());
if (LHSConv->hasOneUse() &&
- ConstantExpr::getSIToFP(CI, I.getType()) == CFP &&
+ Context->getConstantExprSIToFP(CI, I.getType()) == CFP &&
WillNotOverflowSignedAdd(LHSConv->getOperand(0), CI)) {
// Insert the new integer add.
Instruction *NewAdd = BinaryOperator::CreateAdd(LHSConv->getOperand(0),
Value *Op0 = I.getOperand(0), *Op1 = I.getOperand(1);
if (Op0 == Op1) // sub X, X -> 0
- return ReplaceInstUsesWith(I, Constant::getNullValue(I.getType()));
+ return ReplaceInstUsesWith(I, Context->getNullValue(I.getType()));
// If this is a 'B = x-(-A)', change to B = x+A...
- if (Value *V = dyn_castNegVal(Op1))
+ if (Value *V = dyn_castNegVal(Op1, Context))
return BinaryOperator::CreateAdd(Op0, V);
if (isa<UndefValue>(Op0))
if (ConstantInt *C = dyn_cast<ConstantInt>(Op0)) {
// Replace (-1 - A) with (~A)...
if (C->isAllOnesValue())
- return BinaryOperator::CreateNot(Op1);
+ return BinaryOperator::CreateNot(*Context, Op1);
// C - ~X == X + (1+C)
Value *X = 0;
- if (match(Op1, m_Not(m_Value(X))))
- return BinaryOperator::CreateAdd(X, AddOne(C));
+ if (match(Op1, m_Not(m_Value(X)), *Context))
+ return BinaryOperator::CreateAdd(X, AddOne(C, Context));
// -(X >>u 31) -> (X >>s 31)
// -(X >>s 31) -> (X >>u 31)
if (SelectInst *SI = dyn_cast<SelectInst>(Op1))
if (Instruction *R = FoldOpIntoSelect(I, SI, this))
return R;
+
+ // C - zext(bool) -> bool ? C - 1 : C
+ if (ZExtInst *ZI = dyn_cast<ZExtInst>(Op1))
+ if (ZI->getSrcTy() == Type::Int1Ty)
+ return SelectInst::Create(ZI->getOperand(0), SubOne(C, Context), C);
}
if (I.getType() == Type::Int1Ty)
if (BinaryOperator *Op1I = dyn_cast<BinaryOperator>(Op1)) {
if (Op1I->getOpcode() == Instruction::Add) {
if (Op1I->getOperand(0) == Op0) // X-(X+Y) == -Y
- return BinaryOperator::CreateNeg(Op1I->getOperand(1), I.getName());
+ return BinaryOperator::CreateNeg(*Context, Op1I->getOperand(1),
+ I.getName());
else if (Op1I->getOperand(1) == Op0) // X-(Y+X) == -Y
- return BinaryOperator::CreateNeg(Op1I->getOperand(0), I.getName());
+ return BinaryOperator::CreateNeg(*Context, Op1I->getOperand(0),
+ I.getName());
else if (ConstantInt *CI1 = dyn_cast<ConstantInt>(I.getOperand(0))) {
if (ConstantInt *CI2 = dyn_cast<ConstantInt>(Op1I->getOperand(1)))
// C1-(X+C2) --> (C1-C2)-X
- return BinaryOperator::CreateSub(ConstantExpr::getSub(CI1, CI2),
- Op1I->getOperand(0));
+ return BinaryOperator::CreateSub(
+ Context->getConstantExprSub(CI1, CI2), Op1I->getOperand(0));
}
}
Value *OtherOp = Op1I->getOperand(Op1I->getOperand(0) == Op0);
Value *NewNot =
- InsertNewInstBefore(BinaryOperator::CreateNot(OtherOp, "B.not"), I);
+ InsertNewInstBefore(BinaryOperator::CreateNot(*Context,
+ OtherOp, "B.not"), I);
return BinaryOperator::CreateAnd(Op0, NewNot);
}
if (CSI->isZero())
if (Constant *DivRHS = dyn_cast<Constant>(Op1I->getOperand(1)))
return BinaryOperator::CreateSDiv(Op1I->getOperand(0),
- ConstantExpr::getNeg(DivRHS));
+ Context->getConstantExprNeg(DivRHS));
// X - X*C --> X * (1-C)
ConstantInt *C2 = 0;
- if (dyn_castFoldableMul(Op1I, C2) == Op0) {
- Constant *CP1 = ConstantExpr::getSub(ConstantInt::get(I.getType(), 1),
+ if (dyn_castFoldableMul(Op1I, C2, Context) == Op0) {
+ Constant *CP1 =
+ Context->getConstantExprSub(ConstantInt::get(I.getType(), 1),
C2);
return BinaryOperator::CreateMul(Op0, CP1);
}
return ReplaceInstUsesWith(I, Op0I->getOperand(0));
} else if (Op0I->getOpcode() == Instruction::Sub) {
if (Op0I->getOperand(0) == Op1) // (X-Y)-X == -Y
- return BinaryOperator::CreateNeg(Op0I->getOperand(1), I.getName());
+ return BinaryOperator::CreateNeg(*Context, Op0I->getOperand(1),
+ I.getName());
}
}
ConstantInt *C1;
- if (Value *X = dyn_castFoldableMul(Op0, C1)) {
+ if (Value *X = dyn_castFoldableMul(Op0, C1, Context)) {
if (X == Op1) // X*C - X --> X * (C-1)
- return BinaryOperator::CreateMul(Op1, SubOne(C1));
+ return BinaryOperator::CreateMul(Op1, SubOne(C1, Context));
ConstantInt *C2; // X*C1 - X*C2 -> X * (C1-C2)
- if (X == dyn_castFoldableMul(Op1, C2))
- return BinaryOperator::CreateMul(X, ConstantExpr::getSub(C1, C2));
+ if (X == dyn_castFoldableMul(Op1, C2, Context))
+ return BinaryOperator::CreateMul(X, Context->getConstantExprSub(C1, C2));
}
return 0;
}
Value *Op0 = I.getOperand(0), *Op1 = I.getOperand(1);
// If this is a 'B = x-(-A)', change to B = x+A...
- if (Value *V = dyn_castFNegVal(Op1))
+ if (Value *V = dyn_castFNegVal(Op1, Context))
return BinaryOperator::CreateFAdd(Op0, V);
if (BinaryOperator *Op1I = dyn_cast<BinaryOperator>(Op1)) {
if (Op1I->getOpcode() == Instruction::FAdd) {
if (Op1I->getOperand(0) == Op0) // X-(X+Y) == -Y
- return BinaryOperator::CreateFNeg(Op1I->getOperand(1), I.getName());
+ return BinaryOperator::CreateFNeg(*Context, Op1I->getOperand(1),
+ I.getName());
else if (Op1I->getOperand(1) == Op0) // X-(Y+X) == -Y
- return BinaryOperator::CreateFNeg(Op1I->getOperand(0), I.getName());
+ return BinaryOperator::CreateFNeg(*Context, Op1I->getOperand(0),
+ I.getName());
}
}
bool Changed = SimplifyCommutative(I);
Value *Op0 = I.getOperand(0);
- // TODO: If Op1 is undef and Op0 is finite, return zero.
- if (!I.getType()->isFPOrFPVector() &&
- isa<UndefValue>(I.getOperand(1))) // undef * X -> 0
- return ReplaceInstUsesWith(I, Constant::getNullValue(I.getType()));
+ if (isa<UndefValue>(I.getOperand(1))) // undef * X -> 0
+ return ReplaceInstUsesWith(I, Context->getNullValue(I.getType()));
// Simplify mul instructions with a constant RHS...
if (Constant *Op1 = dyn_cast<Constant>(I.getOperand(1))) {
if (SI->getOpcode() == Instruction::Shl)
if (Constant *ShOp = dyn_cast<Constant>(SI->getOperand(1)))
return BinaryOperator::CreateMul(SI->getOperand(0),
- ConstantExpr::getShl(CI, ShOp));
+ Context->getConstantExprShl(CI, ShOp));
if (CI->isZero())
return ReplaceInstUsesWith(I, Op1); // X * 0 == 0
if (CI->equalsInt(1)) // X * 1 == X
return ReplaceInstUsesWith(I, Op0);
if (CI->isAllOnesValue()) // X * -1 == 0 - X
- return BinaryOperator::CreateNeg(Op0, I.getName());
+ return BinaryOperator::CreateNeg(*Context, Op0, I.getName());
const APInt& Val = cast<ConstantInt>(CI)->getValue();
if (Val.isPowerOf2()) { // Replace X*(2^C) with X << C
ConstantInt::get(Op0->getType(), Val.logBase2()));
}
} else if (isa<VectorType>(Op1->getType())) {
- // TODO: If Op1 is all zeros and Op0 is all finite, return all zeros.
+ if (Op1->isNullValue())
+ return ReplaceInstUsesWith(I, Op1);
if (ConstantVector *Op1V = dyn_cast<ConstantVector>(Op1)) {
if (Op1V->isAllOnesValue()) // X * -1 == 0 - X
- return BinaryOperator::CreateNeg(Op0, I.getName());
+ return BinaryOperator::CreateNeg(*Context, Op0, I.getName());
// As above, vector X*splat(1.0) -> X in all defined cases.
if (Constant *Splat = Op1V->getSplatValue()) {
Instruction *Add = BinaryOperator::CreateMul(Op0I->getOperand(0),
Op1, "tmp");
InsertNewInstBefore(Add, I);
- Value *C1C2 = ConstantExpr::getMul(Op1,
+ Value *C1C2 = Context->getConstantExprMul(Op1,
cast<Constant>(Op0I->getOperand(1)));
return BinaryOperator::CreateAdd(Add, C1C2);
return NV;
}
- if (Value *Op0v = dyn_castNegVal(Op0)) // -X * -Y = X*Y
- if (Value *Op1v = dyn_castNegVal(I.getOperand(1)))
+ if (Value *Op0v = dyn_castNegVal(Op0, Context)) // -X * -Y = X*Y
+ if (Value *Op1v = dyn_castNegVal(I.getOperand(1), Context))
return BinaryOperator::CreateMul(Op0v, Op1v);
// (X / Y) * Y = X - (X % Y)
Op1 = Op0;
BO = dyn_cast<BinaryOperator>(I.getOperand(1));
}
- Value *Neg = dyn_castNegVal(Op1);
+ Value *Neg = dyn_castNegVal(Op1, Context);
if (BO && BO->hasOneUse() &&
(BO->getOperand(1) == Op1 || BO->getOperand(1) == Neg) &&
(BO->getOpcode() == Instruction::UDiv ||
return NV;
}
- if (Value *Op0v = dyn_castFNegVal(Op0)) // -X * -Y = X*Y
- if (Value *Op1v = dyn_castFNegVal(I.getOperand(1)))
+ if (Value *Op0v = dyn_castFNegVal(Op0, Context)) // -X * -Y = X*Y
+ if (Value *Op1v = dyn_castFNegVal(I.getOperand(1), Context))
return BinaryOperator::CreateFMul(Op0v, Op1v);
return Changed ? &I : 0;
*I = SI->getOperand(NonNullOperand);
AddToWorkList(BBI);
} else if (*I == SelectCond) {
- *I = NonNullOperand == 1 ? ConstantInt::getTrue() :
- ConstantInt::getFalse();
+ *I = NonNullOperand == 1 ? Context->getTrue() :
+ Context->getFalse();
AddToWorkList(BBI);
}
}
if (isa<UndefValue>(Op0)) {
if (Op0->getType()->isFPOrFPVector())
return ReplaceInstUsesWith(I, Op0);
- return ReplaceInstUsesWith(I, Constant::getNullValue(I.getType()));
+ return ReplaceInstUsesWith(I, Context->getNullValue(I.getType()));
}
// X / undef -> undef
if (const VectorType *Ty = dyn_cast<VectorType>(I.getType())) {
Constant *CI = ConstantInt::get(Ty->getElementType(), 1);
std::vector<Constant*> Elts(Ty->getNumElements(), CI);
- return ReplaceInstUsesWith(I, ConstantVector::get(Elts));
+ return ReplaceInstUsesWith(I, Context->getConstantVector(Elts));
}
Constant *CI = ConstantInt::get(I.getType(), 1);
if (Instruction *LHS = dyn_cast<Instruction>(Op0))
if (Instruction::BinaryOps(LHS->getOpcode()) == I.getOpcode())
if (ConstantInt *LHSRHS = dyn_cast<ConstantInt>(LHS->getOperand(1))) {
- if (MultiplyOverflows(RHS, LHSRHS, I.getOpcode()==Instruction::SDiv))
- return ReplaceInstUsesWith(I, Constant::getNullValue(I.getType()));
+ if (MultiplyOverflows(RHS, LHSRHS,
+ I.getOpcode()==Instruction::SDiv, Context))
+ return ReplaceInstUsesWith(I, Context->getNullValue(I.getType()));
else
return BinaryOperator::Create(I.getOpcode(), LHS->getOperand(0),
- ConstantExpr::getMul(RHS, LHSRHS));
+ Context->getConstantExprMul(RHS, LHSRHS));
}
if (!RHS->isZero()) { // avoid X udiv 0
// 0 / X == 0, we don't need to preserve faults!
if (ConstantInt *LHS = dyn_cast<ConstantInt>(Op0))
if (LHS->equalsInt(0))
- return ReplaceInstUsesWith(I, Constant::getNullValue(I.getType()));
+ return ReplaceInstUsesWith(I, Context->getNullValue(I.getType()));
// It can't be division by zero, hence it must be division by one.
if (I.getType() == Type::Int1Ty)
// if so, convert to a right shift.
if (C->getValue().isPowerOf2()) // 0 not included in isPowerOf2
return BinaryOperator::CreateLShr(Op0,
- ConstantInt::get(Op0->getType(), C->getValue().logBase2()));
+ ConstantInt::get(Op0->getType(), C->getValue().logBase2()));
// X udiv C, where C >= signbit
if (C->getValue().isNegative()) {
- Value *IC = InsertNewInstBefore(new ICmpInst(ICmpInst::ICMP_ULT, Op0, C),
+ Value *IC = InsertNewInstBefore(new ICmpInst(*Context,
+ ICmpInst::ICMP_ULT, Op0, C),
I);
- return SelectInst::Create(IC, Constant::getNullValue(I.getType()),
+ return SelectInst::Create(IC, Context->getNullValue(I.getType()),
ConstantInt::get(I.getType(), 1));
}
}
if (ConstantInt *RHS = dyn_cast<ConstantInt>(Op1)) {
// sdiv X, -1 == -X
if (RHS->isAllOnesValue())
- return BinaryOperator::CreateNeg(Op0);
+ return BinaryOperator::CreateNeg(*Context, Op0);
}
// If the sign bits of both operands are zero (i.e. we can prove they are
// unsigned inputs), turn this into a udiv.
if (I.getType()->isInteger()) {
APInt Mask(APInt::getSignBit(I.getType()->getPrimitiveSizeInBits()));
- if (MaskedValueIsZero(Op1, Mask) && MaskedValueIsZero(Op0, Mask)) {
- // X sdiv Y -> X udiv Y, iff X and Y don't have sign bit set
- return BinaryOperator::CreateUDiv(Op0, Op1, I.getName());
+ if (MaskedValueIsZero(Op0, Mask)) {
+ if (MaskedValueIsZero(Op1, Mask)) {
+ // X sdiv Y -> X udiv Y, iff X and Y don't have sign bit set
+ return BinaryOperator::CreateUDiv(Op0, Op1, I.getName());
+ }
+ ConstantInt *ShiftedInt;
+ if (match(Op1, m_Shl(m_ConstantInt(ShiftedInt), m_Value()), *Context) &&
+ ShiftedInt->getValue().isPowerOf2()) {
+ // X sdiv (1 << Y) -> X udiv (1 << Y) ( -> X u>> Y)
+ // Safe because the only negative value (1 << Y) can take on is
+ // INT_MIN, and X sdiv INT_MIN == X udiv INT_MIN == 0 if X doesn't have
+ // the sign bit set.
+ return BinaryOperator::CreateUDiv(Op0, Op1, I.getName());
+ }
}
- }
+ }
return 0;
}
if (isa<UndefValue>(Op0)) { // undef % X -> 0
if (I.getType()->isFPOrFPVector())
return ReplaceInstUsesWith(I, Op0); // X % undef -> undef (could be SNaN)
- return ReplaceInstUsesWith(I, Constant::getNullValue(I.getType()));
+ return ReplaceInstUsesWith(I, Context->getNullValue(I.getType()));
}
if (isa<UndefValue>(Op1))
return ReplaceInstUsesWith(I, Op1); // X % undef -> undef
// 0 % X == 0 for integer, we don't need to preserve faults!
if (Constant *LHS = dyn_cast<Constant>(Op0))
if (LHS->isNullValue())
- return ReplaceInstUsesWith(I, Constant::getNullValue(I.getType()));
+ return ReplaceInstUsesWith(I, Context->getNullValue(I.getType()));
if (ConstantInt *RHS = dyn_cast<ConstantInt>(Op1)) {
// X % 0 == undef, we don't need to preserve faults!
if (RHS->equalsInt(0))
- return ReplaceInstUsesWith(I, UndefValue::get(I.getType()));
+ return ReplaceInstUsesWith(I, Context->getUndef(I.getType()));
if (RHS->equalsInt(1)) // X % 1 == 0
- return ReplaceInstUsesWith(I, Constant::getNullValue(I.getType()));
+ return ReplaceInstUsesWith(I, Context->getNullValue(I.getType()));
if (Instruction *Op0I = dyn_cast<Instruction>(Op0)) {
if (SelectInst *SI = dyn_cast<SelectInst>(Op0I)) {
// if so, convert to a bitwise and.
if (ConstantInt *C = dyn_cast<ConstantInt>(RHS))
if (C->getValue().isPowerOf2())
- return BinaryOperator::CreateAnd(Op0, SubOne(C));
+ return BinaryOperator::CreateAnd(Op0, SubOne(C, Context));
}
if (Instruction *RHSI = dyn_cast<Instruction>(I.getOperand(1))) {
if (RHSI->getOpcode() == Instruction::Shl &&
isa<ConstantInt>(RHSI->getOperand(0))) {
if (cast<ConstantInt>(RHSI->getOperand(0))->getValue().isPowerOf2()) {
- Constant *N1 = ConstantInt::getAllOnesValue(I.getType());
+ Constant *N1 = Context->getAllOnesValue(I.getType());
Value *Add = InsertNewInstBefore(BinaryOperator::CreateAdd(RHSI, N1,
"tmp"), I);
return BinaryOperator::CreateAnd(Op0, Add);
if ((STO->getValue().isPowerOf2()) &&
(SFO->getValue().isPowerOf2())) {
Value *TrueAnd = InsertNewInstBefore(
- BinaryOperator::CreateAnd(Op0, SubOne(STO), SI->getName()+".t"), I);
+ BinaryOperator::CreateAnd(Op0, SubOne(STO, Context),
+ SI->getName()+".t"), I);
Value *FalseAnd = InsertNewInstBefore(
- BinaryOperator::CreateAnd(Op0, SubOne(SFO), SI->getName()+".f"), I);
+ BinaryOperator::CreateAnd(Op0, SubOne(SFO, Context),
+ SI->getName()+".f"), I);
return SelectInst::Create(SI->getOperand(0), TrueAnd, FalseAnd);
}
}
if (Instruction *common = commonIRemTransforms(I))
return common;
- if (Value *RHSNeg = dyn_castNegVal(Op1))
+ if (Value *RHSNeg = dyn_castNegVal(Op1, Context))
if (!isa<Constant>(RHSNeg) ||
(isa<ConstantInt>(RHSNeg) &&
cast<ConstantInt>(RHSNeg)->getValue().isStrictlyPositive())) {
for (unsigned i = 0; i != VWidth; ++i) {
if (ConstantInt *RHS = dyn_cast<ConstantInt>(RHSV->getOperand(i))) {
if (RHS->getValue().isNegative())
- Elts[i] = cast<ConstantInt>(ConstantExpr::getNeg(RHS));
+ Elts[i] = cast<ConstantInt>(Context->getConstantExprNeg(RHS));
else
Elts[i] = RHS;
}
}
- Constant *NewRHSV = ConstantVector::get(Elts);
+ Constant *NewRHSV = Context->getConstantVector(Elts);
if (NewRHSV != RHSV) {
AddUsesToWorkList(I);
I.setOperand(1, NewRHSV);
case ICmpInst::ICMP_SLE: return 6; // 110
// True -> 7
default:
- assert(0 && "Invalid ICmp predicate!");
+ llvm_unreachable("Invalid ICmp predicate!");
return 0;
}
}
// True -> 7
default:
// Not expecting FCMP_FALSE and FCMP_TRUE;
- assert(0 && "Unexpected FCmp predicate!");
+ llvm_unreachable("Unexpected FCmp predicate!");
return 0;
}
}
/// opcode and two operands into either a constant true or false, or a brand
/// new ICmp instruction. The sign is passed in to determine which kind
/// of predicate to use in the new icmp instruction.
-static Value *getICmpValue(bool sign, unsigned code, Value *LHS, Value *RHS) {
+static Value *getICmpValue(bool sign, unsigned code, Value *LHS, Value *RHS,
+ LLVMContext *Context) {
switch (code) {
- default: assert(0 && "Illegal ICmp code!");
- case 0: return ConstantInt::getFalse();
+ default: llvm_unreachable("Illegal ICmp code!");
+ case 0: return Context->getFalse();
case 1:
if (sign)
- return new ICmpInst(ICmpInst::ICMP_SGT, LHS, RHS);
+ return new ICmpInst(*Context, ICmpInst::ICMP_SGT, LHS, RHS);
else
- return new ICmpInst(ICmpInst::ICMP_UGT, LHS, RHS);
- case 2: return new ICmpInst(ICmpInst::ICMP_EQ, LHS, RHS);
+ return new ICmpInst(*Context, ICmpInst::ICMP_UGT, LHS, RHS);
+ case 2: return new ICmpInst(*Context, ICmpInst::ICMP_EQ, LHS, RHS);
case 3:
if (sign)
- return new ICmpInst(ICmpInst::ICMP_SGE, LHS, RHS);
+ return new ICmpInst(*Context, ICmpInst::ICMP_SGE, LHS, RHS);
else
- return new ICmpInst(ICmpInst::ICMP_UGE, LHS, RHS);
+ return new ICmpInst(*Context, ICmpInst::ICMP_UGE, LHS, RHS);
case 4:
if (sign)
- return new ICmpInst(ICmpInst::ICMP_SLT, LHS, RHS);
+ return new ICmpInst(*Context, ICmpInst::ICMP_SLT, LHS, RHS);
else
- return new ICmpInst(ICmpInst::ICMP_ULT, LHS, RHS);
- case 5: return new ICmpInst(ICmpInst::ICMP_NE, LHS, RHS);
+ return new ICmpInst(*Context, ICmpInst::ICMP_ULT, LHS, RHS);
+ case 5: return new ICmpInst(*Context, ICmpInst::ICMP_NE, LHS, RHS);
case 6:
if (sign)
- return new ICmpInst(ICmpInst::ICMP_SLE, LHS, RHS);
+ return new ICmpInst(*Context, ICmpInst::ICMP_SLE, LHS, RHS);
else
- return new ICmpInst(ICmpInst::ICMP_ULE, LHS, RHS);
- case 7: return ConstantInt::getTrue();
+ return new ICmpInst(*Context, ICmpInst::ICMP_ULE, LHS, RHS);
+ case 7: return Context->getTrue();
}
}
/// opcode and two operands into either a FCmp instruction. isordered is passed
/// in to determine which kind of predicate to use in the new fcmp instruction.
static Value *getFCmpValue(bool isordered, unsigned code,
- Value *LHS, Value *RHS) {
+ Value *LHS, Value *RHS, LLVMContext *Context) {
switch (code) {
- default: assert(0 && "Illegal FCmp code!");
+ default: llvm_unreachable("Illegal FCmp code!");
case 0:
if (isordered)
- return new FCmpInst(FCmpInst::FCMP_ORD, LHS, RHS);
+ return new FCmpInst(*Context, FCmpInst::FCMP_ORD, LHS, RHS);
else
- return new FCmpInst(FCmpInst::FCMP_UNO, LHS, RHS);
+ return new FCmpInst(*Context, FCmpInst::FCMP_UNO, LHS, RHS);
case 1:
if (isordered)
- return new FCmpInst(FCmpInst::FCMP_OGT, LHS, RHS);
+ return new FCmpInst(*Context, FCmpInst::FCMP_OGT, LHS, RHS);
else
- return new FCmpInst(FCmpInst::FCMP_UGT, LHS, RHS);
+ return new FCmpInst(*Context, FCmpInst::FCMP_UGT, LHS, RHS);
case 2:
if (isordered)
- return new FCmpInst(FCmpInst::FCMP_OEQ, LHS, RHS);
+ return new FCmpInst(*Context, FCmpInst::FCMP_OEQ, LHS, RHS);
else
- return new FCmpInst(FCmpInst::FCMP_UEQ, LHS, RHS);
+ return new FCmpInst(*Context, FCmpInst::FCMP_UEQ, LHS, RHS);
case 3:
if (isordered)
- return new FCmpInst(FCmpInst::FCMP_OGE, LHS, RHS);
+ return new FCmpInst(*Context, FCmpInst::FCMP_OGE, LHS, RHS);
else
- return new FCmpInst(FCmpInst::FCMP_UGE, LHS, RHS);
+ return new FCmpInst(*Context, FCmpInst::FCMP_UGE, LHS, RHS);
case 4:
if (isordered)
- return new FCmpInst(FCmpInst::FCMP_OLT, LHS, RHS);
+ return new FCmpInst(*Context, FCmpInst::FCMP_OLT, LHS, RHS);
else
- return new FCmpInst(FCmpInst::FCMP_ULT, LHS, RHS);
+ return new FCmpInst(*Context, FCmpInst::FCMP_ULT, LHS, RHS);
case 5:
if (isordered)
- return new FCmpInst(FCmpInst::FCMP_ONE, LHS, RHS);
+ return new FCmpInst(*Context, FCmpInst::FCMP_ONE, LHS, RHS);
else
- return new FCmpInst(FCmpInst::FCMP_UNE, LHS, RHS);
+ return new FCmpInst(*Context, FCmpInst::FCMP_UNE, LHS, RHS);
case 6:
if (isordered)
- return new FCmpInst(FCmpInst::FCMP_OLE, LHS, RHS);
+ return new FCmpInst(*Context, FCmpInst::FCMP_OLE, LHS, RHS);
else
- return new FCmpInst(FCmpInst::FCMP_ULE, LHS, RHS);
- case 7: return ConstantInt::getTrue();
+ return new FCmpInst(*Context, FCmpInst::FCMP_ULE, LHS, RHS);
+ case 7: return Context->getTrue();
}
}
case Instruction::And: Code = LHSCode & RHSCode; break;
case Instruction::Or: Code = LHSCode | RHSCode; break;
case Instruction::Xor: Code = LHSCode ^ RHSCode; break;
- default: assert(0 && "Illegal logical opcode!"); return 0;
+ default: llvm_unreachable("Illegal logical opcode!"); return 0;
}
bool isSigned = ICmpInst::isSignedPredicate(RHSICI->getPredicate()) ||
ICmpInst::isSignedPredicate(ICI->getPredicate());
- Value *RV = getICmpValue(isSigned, Code, LHS, RHS);
+ Value *RV = getICmpValue(isSigned, Code, LHS, RHS, IC.getContext());
if (Instruction *I = dyn_cast<Instruction>(RV))
return I;
// Otherwise, it's a constant boolean value...
Value *X = Op->getOperand(0);
Constant *Together = 0;
if (!Op->isShift())
- Together = ConstantExpr::getAnd(AndRHS, OpRHS);
+ Together = Context->getConstantExprAnd(AndRHS, OpRHS);
switch (Op->getOpcode()) {
case Instruction::Xor:
uint32_t BitWidth = AndRHS->getType()->getBitWidth();
uint32_t OpRHSVal = OpRHS->getLimitedValue(BitWidth);
APInt ShlMask(APInt::getHighBitsSet(BitWidth, BitWidth-OpRHSVal));
- ConstantInt *CI = ConstantInt::get(AndRHS->getValue() & ShlMask);
+ ConstantInt *CI = ConstantInt::get(*Context, AndRHS->getValue() & ShlMask);
if (CI->getValue() == ShlMask) {
// Masking out bits that the shift already masks
uint32_t BitWidth = AndRHS->getType()->getBitWidth();
uint32_t OpRHSVal = OpRHS->getLimitedValue(BitWidth);
APInt ShrMask(APInt::getLowBitsSet(BitWidth, BitWidth - OpRHSVal));
- ConstantInt *CI = ConstantInt::get(AndRHS->getValue() & ShrMask);
+ ConstantInt *CI = ConstantInt::get(*Context, AndRHS->getValue() & ShrMask);
if (CI->getValue() == ShrMask) {
// Masking out bits that the shift already masks.
uint32_t BitWidth = AndRHS->getType()->getBitWidth();
uint32_t OpRHSVal = OpRHS->getLimitedValue(BitWidth);
APInt ShrMask(APInt::getLowBitsSet(BitWidth, BitWidth - OpRHSVal));
- Constant *C = ConstantInt::get(AndRHS->getValue() & ShrMask);
+ Constant *C = ConstantInt::get(*Context, AndRHS->getValue() & ShrMask);
if (C == AndRHS) { // Masking out bits shifted in.
// (Val ashr C1) & C2 -> (Val lshr C1) & C2
// Make the argument unsigned.
Instruction *InstCombiner::InsertRangeTest(Value *V, Constant *Lo, Constant *Hi,
bool isSigned, bool Inside,
Instruction &IB) {
- assert(cast<ConstantInt>(ConstantExpr::getICmp((isSigned ?
+ assert(cast<ConstantInt>(Context->getConstantExprICmp((isSigned ?
ICmpInst::ICMP_SLE:ICmpInst::ICMP_ULE), Lo, Hi))->getZExtValue() &&
"Lo is not <= Hi in range emission code!");
if (Inside) {
if (Lo == Hi) // Trivially false.
- return new ICmpInst(ICmpInst::ICMP_NE, V, V);
+ return new ICmpInst(*Context, ICmpInst::ICMP_NE, V, V);
// V >= Min && V < Hi --> V < Hi
if (cast<ConstantInt>(Lo)->isMinValue(isSigned)) {
ICmpInst::Predicate pred = (isSigned ?
ICmpInst::ICMP_SLT : ICmpInst::ICMP_ULT);
- return new ICmpInst(pred, V, Hi);
+ return new ICmpInst(*Context, pred, V, Hi);
}
// Emit V-Lo <u Hi-Lo
- Constant *NegLo = ConstantExpr::getNeg(Lo);
+ Constant *NegLo = Context->getConstantExprNeg(Lo);
Instruction *Add = BinaryOperator::CreateAdd(V, NegLo, V->getName()+".off");
InsertNewInstBefore(Add, IB);
- Constant *UpperBound = ConstantExpr::getAdd(NegLo, Hi);
- return new ICmpInst(ICmpInst::ICMP_ULT, Add, UpperBound);
+ Constant *UpperBound = Context->getConstantExprAdd(NegLo, Hi);
+ return new ICmpInst(*Context, ICmpInst::ICMP_ULT, Add, UpperBound);
}
if (Lo == Hi) // Trivially true.
- return new ICmpInst(ICmpInst::ICMP_EQ, V, V);
+ return new ICmpInst(*Context, ICmpInst::ICMP_EQ, V, V);
// V < Min || V >= Hi -> V > Hi-1
- Hi = SubOne(cast<ConstantInt>(Hi));
+ Hi = SubOne(cast<ConstantInt>(Hi), Context);
if (cast<ConstantInt>(Lo)->isMinValue(isSigned)) {
ICmpInst::Predicate pred = (isSigned ?
ICmpInst::ICMP_SGT : ICmpInst::ICMP_UGT);
- return new ICmpInst(pred, V, Hi);
+ return new ICmpInst(*Context, pred, V, Hi);
}
// Emit V-Lo >u Hi-1-Lo
// Note that Hi has already had one subtracted from it, above.
- ConstantInt *NegLo = cast<ConstantInt>(ConstantExpr::getNeg(Lo));
+ ConstantInt *NegLo = cast<ConstantInt>(Context->getConstantExprNeg(Lo));
Instruction *Add = BinaryOperator::CreateAdd(V, NegLo, V->getName()+".off");
InsertNewInstBefore(Add, IB);
- Constant *LowerBound = ConstantExpr::getAdd(NegLo, Hi);
- return new ICmpInst(ICmpInst::ICMP_UGT, Add, LowerBound);
+ Constant *LowerBound = Context->getConstantExprAdd(NegLo, Hi);
+ return new ICmpInst(*Context, ICmpInst::ICMP_UGT, Add, LowerBound);
}
// isRunOfOnes - Returns true iff Val consists of one contiguous run of 1s with
switch (LHSI->getOpcode()) {
default: return 0;
case Instruction::And:
- if (ConstantExpr::getAnd(N, Mask) == Mask) {
+ if (Context->getConstantExprAnd(N, Mask) == Mask) {
// If the AndRHS is a power of two minus one (0+1+), this is simple.
if ((Mask->getValue().countLeadingZeros() +
Mask->getValue().countPopulation()) ==
// If the AndRHS is a power of two minus one (0+1+), and N&Mask == 0
if ((Mask->getValue().countLeadingZeros() +
Mask->getValue().countPopulation()) == Mask->getValue().getBitWidth()
- && ConstantExpr::getAnd(N, Mask)->isNullValue())
+ && Context->getConstantExprAnd(N, Mask)->isNullValue())
break;
return 0;
}
ICmpInst::Predicate LHSCC, RHSCC;
// This only handles icmp of constants: (icmp1 A, C1) & (icmp2 B, C2).
- if (!match(LHS, m_ICmp(LHSCC, m_Value(Val), m_ConstantInt(LHSCst))) ||
- !match(RHS, m_ICmp(RHSCC, m_Value(Val2), m_ConstantInt(RHSCst))))
+ if (!match(LHS, m_ICmp(LHSCC, m_Value(Val),
+ m_ConstantInt(LHSCst)), *Context) ||
+ !match(RHS, m_ICmp(RHSCC, m_Value(Val2),
+ m_ConstantInt(RHSCst)), *Context))
return 0;
// (icmp ult A, C) & (icmp ult B, C) --> (icmp ult (A|B), C)
LHSCst->getValue().isPowerOf2()) {
Instruction *NewOr = BinaryOperator::CreateOr(Val, Val2);
InsertNewInstBefore(NewOr, I);
- return new ICmpInst(LHSCC, NewOr, LHSCst);
+ return new ICmpInst(*Context, LHSCC, NewOr, LHSCst);
}
// From here on, we only handle:
assert(LHSCst != RHSCst && "Compares not folded above?");
switch (LHSCC) {
- default: assert(0 && "Unknown integer condition code!");
+ default: llvm_unreachable("Unknown integer condition code!");
case ICmpInst::ICMP_EQ:
switch (RHSCC) {
- default: assert(0 && "Unknown integer condition code!");
+ default: llvm_unreachable("Unknown integer condition code!");
case ICmpInst::ICMP_EQ: // (X == 13 & X == 15) -> false
case ICmpInst::ICMP_UGT: // (X == 13 & X > 15) -> false
case ICmpInst::ICMP_SGT: // (X == 13 & X > 15) -> false
- return ReplaceInstUsesWith(I, ConstantInt::getFalse());
+ return ReplaceInstUsesWith(I, Context->getFalse());
case ICmpInst::ICMP_NE: // (X == 13 & X != 15) -> X == 13
case ICmpInst::ICMP_ULT: // (X == 13 & X < 15) -> X == 13
case ICmpInst::ICMP_SLT: // (X == 13 & X < 15) -> X == 13
}
case ICmpInst::ICMP_NE:
switch (RHSCC) {
- default: assert(0 && "Unknown integer condition code!");
+ default: llvm_unreachable("Unknown integer condition code!");
case ICmpInst::ICMP_ULT:
- if (LHSCst == SubOne(RHSCst)) // (X != 13 & X u< 14) -> X < 13
- return new ICmpInst(ICmpInst::ICMP_ULT, Val, LHSCst);
+ if (LHSCst == SubOne(RHSCst, Context)) // (X != 13 & X u< 14) -> X < 13
+ return new ICmpInst(*Context, ICmpInst::ICMP_ULT, Val, LHSCst);
break; // (X != 13 & X u< 15) -> no change
case ICmpInst::ICMP_SLT:
- if (LHSCst == SubOne(RHSCst)) // (X != 13 & X s< 14) -> X < 13
- return new ICmpInst(ICmpInst::ICMP_SLT, Val, LHSCst);
+ if (LHSCst == SubOne(RHSCst, Context)) // (X != 13 & X s< 14) -> X < 13
+ return new ICmpInst(*Context, ICmpInst::ICMP_SLT, Val, LHSCst);
break; // (X != 13 & X s< 15) -> no change
case ICmpInst::ICMP_EQ: // (X != 13 & X == 15) -> X == 15
case ICmpInst::ICMP_UGT: // (X != 13 & X u> 15) -> X u> 15
case ICmpInst::ICMP_SGT: // (X != 13 & X s> 15) -> X s> 15
return ReplaceInstUsesWith(I, RHS);
case ICmpInst::ICMP_NE:
- if (LHSCst == SubOne(RHSCst)){// (X != 13 & X != 14) -> X-13 >u 1
- Constant *AddCST = ConstantExpr::getNeg(LHSCst);
+ if (LHSCst == SubOne(RHSCst, Context)){// (X != 13 & X != 14) -> X-13 >u 1
+ Constant *AddCST = Context->getConstantExprNeg(LHSCst);
Instruction *Add = BinaryOperator::CreateAdd(Val, AddCST,
Val->getName()+".off");
InsertNewInstBefore(Add, I);
- return new ICmpInst(ICmpInst::ICMP_UGT, Add,
+ return new ICmpInst(*Context, ICmpInst::ICMP_UGT, Add,
ConstantInt::get(Add->getType(), 1));
}
break; // (X != 13 & X != 15) -> no change
break;
case ICmpInst::ICMP_ULT:
switch (RHSCC) {
- default: assert(0 && "Unknown integer condition code!");
+ default: llvm_unreachable("Unknown integer condition code!");
case ICmpInst::ICMP_EQ: // (X u< 13 & X == 15) -> false
case ICmpInst::ICMP_UGT: // (X u< 13 & X u> 15) -> false
- return ReplaceInstUsesWith(I, ConstantInt::getFalse());
+ return ReplaceInstUsesWith(I, Context->getFalse());
case ICmpInst::ICMP_SGT: // (X u< 13 & X s> 15) -> no change
break;
case ICmpInst::ICMP_NE: // (X u< 13 & X != 15) -> X u< 13
break;
case ICmpInst::ICMP_SLT:
switch (RHSCC) {
- default: assert(0 && "Unknown integer condition code!");
+ default: llvm_unreachable("Unknown integer condition code!");
case ICmpInst::ICMP_EQ: // (X s< 13 & X == 15) -> false
case ICmpInst::ICMP_SGT: // (X s< 13 & X s> 15) -> false
- return ReplaceInstUsesWith(I, ConstantInt::getFalse());
+ return ReplaceInstUsesWith(I, Context->getFalse());
case ICmpInst::ICMP_UGT: // (X s< 13 & X u> 15) -> no change
break;
case ICmpInst::ICMP_NE: // (X s< 13 & X != 15) -> X < 13
break;
case ICmpInst::ICMP_UGT:
switch (RHSCC) {
- default: assert(0 && "Unknown integer condition code!");
+ default: llvm_unreachable("Unknown integer condition code!");
case ICmpInst::ICMP_EQ: // (X u> 13 & X == 15) -> X == 15
case ICmpInst::ICMP_UGT: // (X u> 13 & X u> 15) -> X u> 15
return ReplaceInstUsesWith(I, RHS);
case ICmpInst::ICMP_SGT: // (X u> 13 & X s> 15) -> no change
break;
case ICmpInst::ICMP_NE:
- if (RHSCst == AddOne(LHSCst)) // (X u> 13 & X != 14) -> X u> 14
- return new ICmpInst(LHSCC, Val, RHSCst);
+ if (RHSCst == AddOne(LHSCst, Context)) // (X u> 13 & X != 14) -> X u> 14
+ return new ICmpInst(*Context, LHSCC, Val, RHSCst);
break; // (X u> 13 & X != 15) -> no change
case ICmpInst::ICMP_ULT: // (X u> 13 & X u< 15) -> (X-14) <u 1
- return InsertRangeTest(Val, AddOne(LHSCst), RHSCst, false, true, I);
+ return InsertRangeTest(Val, AddOne(LHSCst, Context),
+ RHSCst, false, true, I);
case ICmpInst::ICMP_SLT: // (X u> 13 & X s< 15) -> no change
break;
}
break;
case ICmpInst::ICMP_SGT:
switch (RHSCC) {
- default: assert(0 && "Unknown integer condition code!");
+ default: llvm_unreachable("Unknown integer condition code!");
case ICmpInst::ICMP_EQ: // (X s> 13 & X == 15) -> X == 15
case ICmpInst::ICMP_SGT: // (X s> 13 & X s> 15) -> X s> 15
return ReplaceInstUsesWith(I, RHS);
case ICmpInst::ICMP_UGT: // (X s> 13 & X u> 15) -> no change
break;
case ICmpInst::ICMP_NE:
- if (RHSCst == AddOne(LHSCst)) // (X s> 13 & X != 14) -> X s> 14
- return new ICmpInst(LHSCC, Val, RHSCst);
+ if (RHSCst == AddOne(LHSCst, Context)) // (X s> 13 & X != 14) -> X s> 14
+ return new ICmpInst(*Context, LHSCC, Val, RHSCst);
break; // (X s> 13 & X != 15) -> no change
case ICmpInst::ICMP_SLT: // (X s> 13 & X s< 15) -> (X-14) s< 1
- return InsertRangeTest(Val, AddOne(LHSCst), RHSCst, true, true, I);
+ return InsertRangeTest(Val, AddOne(LHSCst, Context),
+ RHSCst, true, true, I);
case ICmpInst::ICMP_ULT: // (X s> 13 & X u< 15) -> no change
break;
}
return 0;
}
+Instruction *InstCombiner::FoldAndOfFCmps(Instruction &I, FCmpInst *LHS,
+ FCmpInst *RHS) {
+
+ if (LHS->getPredicate() == FCmpInst::FCMP_ORD &&
+ RHS->getPredicate() == FCmpInst::FCMP_ORD) {
+ // (fcmp ord x, c) & (fcmp ord y, c) -> (fcmp ord x, y)
+ if (ConstantFP *LHSC = dyn_cast<ConstantFP>(LHS->getOperand(1)))
+ if (ConstantFP *RHSC = dyn_cast<ConstantFP>(RHS->getOperand(1))) {
+ // If either of the constants are nans, then the whole thing returns
+ // false.
+ if (LHSC->getValueAPF().isNaN() || RHSC->getValueAPF().isNaN())
+ return ReplaceInstUsesWith(I, Context->getFalse());
+ return new FCmpInst(*Context, FCmpInst::FCMP_ORD,
+ LHS->getOperand(0), RHS->getOperand(0));
+ }
+
+ // Handle vector zeros. This occurs because the canonical form of
+ // "fcmp ord x,x" is "fcmp ord x, 0".
+ if (isa<ConstantAggregateZero>(LHS->getOperand(1)) &&
+ isa<ConstantAggregateZero>(RHS->getOperand(1)))
+ return new FCmpInst(*Context, FCmpInst::FCMP_ORD,
+ LHS->getOperand(0), RHS->getOperand(0));
+ return 0;
+ }
+
+ Value *Op0LHS = LHS->getOperand(0), *Op0RHS = LHS->getOperand(1);
+ Value *Op1LHS = RHS->getOperand(0), *Op1RHS = RHS->getOperand(1);
+ FCmpInst::Predicate Op0CC = LHS->getPredicate(), Op1CC = RHS->getPredicate();
+
+
+ if (Op0LHS == Op1RHS && Op0RHS == Op1LHS) {
+ // Swap RHS operands to match LHS.
+ Op1CC = FCmpInst::getSwappedPredicate(Op1CC);
+ std::swap(Op1LHS, Op1RHS);
+ }
+
+ if (Op0LHS == Op1LHS && Op0RHS == Op1RHS) {
+ // Simplify (fcmp cc0 x, y) & (fcmp cc1 x, y).
+ if (Op0CC == Op1CC)
+ return new FCmpInst(*Context, (FCmpInst::Predicate)Op0CC, Op0LHS, Op0RHS);
+
+ if (Op0CC == FCmpInst::FCMP_FALSE || Op1CC == FCmpInst::FCMP_FALSE)
+ return ReplaceInstUsesWith(I, Context->getFalse());
+ if (Op0CC == FCmpInst::FCMP_TRUE)
+ return ReplaceInstUsesWith(I, RHS);
+ if (Op1CC == FCmpInst::FCMP_TRUE)
+ return ReplaceInstUsesWith(I, LHS);
+
+ bool Op0Ordered;
+ bool Op1Ordered;
+ unsigned Op0Pred = getFCmpCode(Op0CC, Op0Ordered);
+ unsigned Op1Pred = getFCmpCode(Op1CC, Op1Ordered);
+ if (Op1Pred == 0) {
+ std::swap(LHS, RHS);
+ std::swap(Op0Pred, Op1Pred);
+ std::swap(Op0Ordered, Op1Ordered);
+ }
+ if (Op0Pred == 0) {
+ // uno && ueq -> uno && (uno || eq) -> ueq
+ // ord && olt -> ord && (ord && lt) -> olt
+ if (Op0Ordered == Op1Ordered)
+ return ReplaceInstUsesWith(I, RHS);
+
+ // uno && oeq -> uno && (ord && eq) -> false
+ // uno && ord -> false
+ if (!Op0Ordered)
+ return ReplaceInstUsesWith(I, Context->getFalse());
+ // ord && ueq -> ord && (uno || eq) -> oeq
+ return cast<Instruction>(getFCmpValue(true, Op1Pred,
+ Op0LHS, Op0RHS, Context));
+ }
+ }
+
+ return 0;
+}
+
Instruction *InstCombiner::visitAnd(BinaryOperator &I) {
bool Changed = SimplifyCommutative(I);
Value *Op0 = I.getOperand(0), *Op1 = I.getOperand(1);
if (isa<UndefValue>(Op1)) // X & undef -> 0
- return ReplaceInstUsesWith(I, Constant::getNullValue(I.getType()));
+ return ReplaceInstUsesWith(I, Context->getNullValue(I.getType()));
// and X, X = X
if (Op0 == Op1)
ConstantInt *A = dyn_cast<ConstantInt>(Op0LHS);
if (!(A && A->isZero()) && // avoid infinite recursion.
MaskedValueIsZero(Op0LHS, Mask)) {
- Instruction *NewNeg = BinaryOperator::CreateNeg(Op0RHS);
+ Instruction *NewNeg = BinaryOperator::CreateNeg(*Context, Op0RHS);
InsertNewInstBefore(NewNeg, I);
return BinaryOperator::CreateAnd(NewNeg, AndRHS);
}
// (1 << x) & 1 --> zext(x == 0)
// (1 >> x) & 1 --> zext(x == 0)
if (AndRHSMask == 1 && Op0LHS == AndRHS) {
- Instruction *NewICmp = new ICmpInst(ICmpInst::ICMP_EQ, Op0RHS,
- Constant::getNullValue(I.getType()));
+ Instruction *NewICmp = new ICmpInst(*Context, ICmpInst::ICMP_EQ,
+ Op0RHS, Context->getNullValue(I.getType()));
InsertNewInstBefore(NewICmp, I);
return new ZExtInst(NewICmp, I.getType());
}
CastOp->getName()+".shrunk");
NewCast = InsertNewInstBefore(NewCast, I);
// trunc_or_bitcast(C1)&C2
- Constant *C3 = ConstantExpr::getTruncOrBitCast(AndCI,I.getType());
- C3 = ConstantExpr::getAnd(C3, AndRHS);
+ Constant *C3 =
+ Context->getConstantExprTruncOrBitCast(AndCI,I.getType());
+ C3 = Context->getConstantExprAnd(C3, AndRHS);
return BinaryOperator::CreateAnd(NewCast, C3);
} else if (CastOp->getOpcode() == Instruction::Or) {
// Change: and (cast (or X, C1) to T), C2
// into : trunc(C1)&C2 iff trunc(C1)&C2 == C2
- Constant *C3 = ConstantExpr::getTruncOrBitCast(AndCI,I.getType());
- if (ConstantExpr::getAnd(C3, AndRHS) == AndRHS) // trunc(C1)&C2
+ Constant *C3 =
+ Context->getConstantExprTruncOrBitCast(AndCI,I.getType());
+ if (Context->getConstantExprAnd(C3, AndRHS) == AndRHS)
+ // trunc(C1)&C2
return ReplaceInstUsesWith(I, AndRHS);
}
}
return NV;
}
- Value *Op0NotVal = dyn_castNotVal(Op0);
- Value *Op1NotVal = dyn_castNotVal(Op1);
+ Value *Op0NotVal = dyn_castNotVal(Op0, Context);
+ Value *Op1NotVal = dyn_castNotVal(Op1, Context);
if (Op0NotVal == Op1 || Op1NotVal == Op0) // A & ~A == ~A & A == 0
- return ReplaceInstUsesWith(I, Constant::getNullValue(I.getType()));
+ return ReplaceInstUsesWith(I, Context->getNullValue(I.getType()));
// (~A & ~B) == (~(A | B)) - De Morgan's Law
if (Op0NotVal && Op1NotVal && isOnlyUse(Op0) && isOnlyUse(Op1)) {
Instruction *Or = BinaryOperator::CreateOr(Op0NotVal, Op1NotVal,
I.getName()+".demorgan");
InsertNewInstBefore(Or, I);
- return BinaryOperator::CreateNot(Or);
+ return BinaryOperator::CreateNot(*Context, Or);
}
{
Value *A = 0, *B = 0, *C = 0, *D = 0;
- if (match(Op0, m_Or(m_Value(A), m_Value(B)))) {
+ if (match(Op0, m_Or(m_Value(A), m_Value(B)), *Context)) {
if (A == Op1 || B == Op1) // (A | ?) & A --> A
return ReplaceInstUsesWith(I, Op1);
// (A|B) & ~(A&B) -> A^B
- if (match(Op1, m_Not(m_And(m_Value(C), m_Value(D))))) {
+ if (match(Op1, m_Not(m_And(m_Value(C), m_Value(D))), *Context)) {
if ((A == C && B == D) || (A == D && B == C))
return BinaryOperator::CreateXor(A, B);
}
}
- if (match(Op1, m_Or(m_Value(A), m_Value(B)))) {
+ if (match(Op1, m_Or(m_Value(A), m_Value(B)), *Context)) {
if (A == Op0 || B == Op0) // A & (A | ?) --> A
return ReplaceInstUsesWith(I, Op0);
// ~(A&B) & (A|B) -> A^B
- if (match(Op0, m_Not(m_And(m_Value(C), m_Value(D))))) {
+ if (match(Op0, m_Not(m_And(m_Value(C), m_Value(D))), *Context)) {
if ((A == C && B == D) || (A == D && B == C))
return BinaryOperator::CreateXor(A, B);
}
}
if (Op0->hasOneUse() &&
- match(Op0, m_Xor(m_Value(A), m_Value(B)))) {
+ match(Op0, m_Xor(m_Value(A), m_Value(B)), *Context)) {
if (A == Op1) { // (A^B)&A -> A&(A^B)
I.swapOperands(); // Simplify below
std::swap(Op0, Op1);
}
if (Op1->hasOneUse() &&
- match(Op1, m_Xor(m_Value(A), m_Value(B)))) {
+ match(Op1, m_Xor(m_Value(A), m_Value(B)), *Context)) {
if (B == Op0) { // B&(A^B) -> B&(B^A)
cast<BinaryOperator>(Op1)->swapOperands();
std::swap(A, B);
}
if (A == Op0) { // A&(A^B) -> A & ~B
- Instruction *NotB = BinaryOperator::CreateNot(B, "tmp");
+ Instruction *NotB = BinaryOperator::CreateNot(*Context, B, "tmp");
InsertNewInstBefore(NotB, I);
return BinaryOperator::CreateAnd(A, NotB);
}
}
// (A&((~A)|B)) -> A&B
- if (match(Op0, m_Or(m_Not(m_Specific(Op1)), m_Value(A))) ||
- match(Op0, m_Or(m_Value(A), m_Not(m_Specific(Op1)))))
+ if (match(Op0, m_Or(m_Not(m_Specific(Op1)), m_Value(A)), *Context) ||
+ match(Op0, m_Or(m_Value(A), m_Not(m_Specific(Op1))), *Context))
return BinaryOperator::CreateAnd(A, Op1);
- if (match(Op1, m_Or(m_Not(m_Specific(Op0)), m_Value(A))) ||
- match(Op1, m_Or(m_Value(A), m_Not(m_Specific(Op0)))))
+ if (match(Op1, m_Or(m_Not(m_Specific(Op0)), m_Value(A)), *Context) ||
+ match(Op1, m_Or(m_Value(A), m_Not(m_Specific(Op0))), *Context))
return BinaryOperator::CreateAnd(A, Op0);
}
if (ICmpInst *RHS = dyn_cast<ICmpInst>(Op1)) {
// (icmp1 A, B) & (icmp2 A, B) --> (icmp3 A, B)
- if (Instruction *R = AssociativeOpt(I, FoldICmpLogical(*this, RHS)))
+ if (Instruction *R = AssociativeOpt(I, FoldICmpLogical(*this, RHS),Context))
return R;
if (ICmpInst *LHS = dyn_cast<ICmpInst>(Op0))
if (CastInst *Op1C = dyn_cast<CastInst>(Op1))
if (Op0C->getOpcode() == Op1C->getOpcode()) { // same cast kind ?
const Type *SrcTy = Op0C->getOperand(0)->getType();
- if (SrcTy == Op1C->getOperand(0)->getType() && SrcTy->isInteger() &&
+ if (SrcTy == Op1C->getOperand(0)->getType() &&
+ SrcTy->isIntOrIntVector() &&
// Only do this if the casts both really cause code to be generated.
ValueRequiresCast(Op0C->getOpcode(), Op0C->getOperand(0),
I.getType(), TD) &&
// If and'ing two fcmp, try combine them into one.
if (FCmpInst *LHS = dyn_cast<FCmpInst>(I.getOperand(0))) {
- if (FCmpInst *RHS = dyn_cast<FCmpInst>(I.getOperand(1))) {
- if (LHS->getPredicate() == FCmpInst::FCMP_ORD &&
- RHS->getPredicate() == FCmpInst::FCMP_ORD) {
- // (fcmp ord x, c) & (fcmp ord y, c) -> (fcmp ord x, y)
- if (ConstantFP *LHSC = dyn_cast<ConstantFP>(LHS->getOperand(1)))
- if (ConstantFP *RHSC = dyn_cast<ConstantFP>(RHS->getOperand(1))) {
- // If either of the constants are nans, then the whole thing returns
- // false.
- if (LHSC->getValueAPF().isNaN() || RHSC->getValueAPF().isNaN())
- return ReplaceInstUsesWith(I, ConstantInt::getFalse());
- return new FCmpInst(FCmpInst::FCMP_ORD, LHS->getOperand(0),
- RHS->getOperand(0));
- }
- } else {
- Value *Op0LHS, *Op0RHS, *Op1LHS, *Op1RHS;
- FCmpInst::Predicate Op0CC, Op1CC;
- if (match(Op0, m_FCmp(Op0CC, m_Value(Op0LHS), m_Value(Op0RHS))) &&
- match(Op1, m_FCmp(Op1CC, m_Value(Op1LHS), m_Value(Op1RHS)))) {
- if (Op0LHS == Op1RHS && Op0RHS == Op1LHS) {
- // Swap RHS operands to match LHS.
- Op1CC = FCmpInst::getSwappedPredicate(Op1CC);
- std::swap(Op1LHS, Op1RHS);
- }
- if (Op0LHS == Op1LHS && Op0RHS == Op1RHS) {
- // Simplify (fcmp cc0 x, y) & (fcmp cc1 x, y).
- if (Op0CC == Op1CC)
- return new FCmpInst((FCmpInst::Predicate)Op0CC, Op0LHS, Op0RHS);
- else if (Op0CC == FCmpInst::FCMP_FALSE ||
- Op1CC == FCmpInst::FCMP_FALSE)
- return ReplaceInstUsesWith(I, ConstantInt::getFalse());
- else if (Op0CC == FCmpInst::FCMP_TRUE)
- return ReplaceInstUsesWith(I, Op1);
- else if (Op1CC == FCmpInst::FCMP_TRUE)
- return ReplaceInstUsesWith(I, Op0);
- bool Op0Ordered;
- bool Op1Ordered;
- unsigned Op0Pred = getFCmpCode(Op0CC, Op0Ordered);
- unsigned Op1Pred = getFCmpCode(Op1CC, Op1Ordered);
- if (Op1Pred == 0) {
- std::swap(Op0, Op1);
- std::swap(Op0Pred, Op1Pred);
- std::swap(Op0Ordered, Op1Ordered);
- }
- if (Op0Pred == 0) {
- // uno && ueq -> uno && (uno || eq) -> ueq
- // ord && olt -> ord && (ord && lt) -> olt
- if (Op0Ordered == Op1Ordered)
- return ReplaceInstUsesWith(I, Op1);
- // uno && oeq -> uno && (ord && eq) -> false
- // uno && ord -> false
- if (!Op0Ordered)
- return ReplaceInstUsesWith(I, ConstantInt::getFalse());
- // ord && ueq -> ord && (uno || eq) -> oeq
- return cast<Instruction>(getFCmpValue(true, Op1Pred,
- Op0LHS, Op0RHS));
- }
- }
- }
- }
- }
+ if (FCmpInst *RHS = dyn_cast<FCmpInst>(I.getOperand(1)))
+ if (Instruction *Res = FoldAndOfFCmps(I, LHS, RHS))
+ return Res;
}
return Changed ? &I : 0;
/// If A is (cond?-1:0) and either B or D is ~(cond?-1,0) or (cond?0,-1), then
/// we can simplify this expression to "cond ? C : D or B".
static Instruction *MatchSelectFromAndOr(Value *A, Value *B,
- Value *C, Value *D) {
+ Value *C, Value *D,
+ LLVMContext *Context) {
// If A is not a select of -1/0, this cannot match.
Value *Cond = 0;
- if (!match(A, m_SelectCst<-1, 0>(m_Value(Cond))))
+ if (!match(A, m_SelectCst<-1, 0>(m_Value(Cond)), *Context))
return 0;
// ((cond?-1:0)&C) | (B&(cond?0:-1)) -> cond ? C : B.
- if (match(D, m_SelectCst<0, -1>(m_Specific(Cond))))
+ if (match(D, m_SelectCst<0, -1>(m_Specific(Cond)), *Context))
return SelectInst::Create(Cond, C, B);
- if (match(D, m_Not(m_SelectCst<-1, 0>(m_Specific(Cond)))))
+ if (match(D, m_Not(m_SelectCst<-1, 0>(m_Specific(Cond))), *Context))
return SelectInst::Create(Cond, C, B);
// ((cond?-1:0)&C) | ((cond?0:-1)&D) -> cond ? C : D.
- if (match(B, m_SelectCst<0, -1>(m_Specific(Cond))))
+ if (match(B, m_SelectCst<0, -1>(m_Specific(Cond)), *Context))
return SelectInst::Create(Cond, C, D);
- if (match(B, m_Not(m_SelectCst<-1, 0>(m_Specific(Cond)))))
+ if (match(B, m_Not(m_SelectCst<-1, 0>(m_Specific(Cond))), *Context))
return SelectInst::Create(Cond, C, D);
return 0;
}
ICmpInst::Predicate LHSCC, RHSCC;
// This only handles icmp of constants: (icmp1 A, C1) | (icmp2 B, C2).
- if (!match(LHS, m_ICmp(LHSCC, m_Value(Val), m_ConstantInt(LHSCst))) ||
- !match(RHS, m_ICmp(RHSCC, m_Value(Val2), m_ConstantInt(RHSCst))))
+ if (!match(LHS, m_ICmp(LHSCC, m_Value(Val),
+ m_ConstantInt(LHSCst)), *Context) ||
+ !match(RHS, m_ICmp(RHSCC, m_Value(Val2),
+ m_ConstantInt(RHSCst)), *Context))
return 0;
// From here on, we only handle:
assert(LHSCst != RHSCst && "Compares not folded above?");
switch (LHSCC) {
- default: assert(0 && "Unknown integer condition code!");
+ default: llvm_unreachable("Unknown integer condition code!");
case ICmpInst::ICMP_EQ:
switch (RHSCC) {
- default: assert(0 && "Unknown integer condition code!");
+ default: llvm_unreachable("Unknown integer condition code!");
case ICmpInst::ICMP_EQ:
- if (LHSCst == SubOne(RHSCst)) { // (X == 13 | X == 14) -> X-13 <u 2
- Constant *AddCST = ConstantExpr::getNeg(LHSCst);
+ if (LHSCst == SubOne(RHSCst, Context)) {
+ // (X == 13 | X == 14) -> X-13 <u 2
+ Constant *AddCST = Context->getConstantExprNeg(LHSCst);
Instruction *Add = BinaryOperator::CreateAdd(Val, AddCST,
Val->getName()+".off");
InsertNewInstBefore(Add, I);
- AddCST = ConstantExpr::getSub(AddOne(RHSCst), LHSCst);
- return new ICmpInst(ICmpInst::ICMP_ULT, Add, AddCST);
+ AddCST = Context->getConstantExprSub(AddOne(RHSCst, Context), LHSCst);
+ return new ICmpInst(*Context, ICmpInst::ICMP_ULT, Add, AddCST);
}
break; // (X == 13 | X == 15) -> no change
case ICmpInst::ICMP_UGT: // (X == 13 | X u> 14) -> no change
break;
case ICmpInst::ICMP_NE:
switch (RHSCC) {
- default: assert(0 && "Unknown integer condition code!");
+ default: llvm_unreachable("Unknown integer condition code!");
case ICmpInst::ICMP_EQ: // (X != 13 | X == 15) -> X != 13
case ICmpInst::ICMP_UGT: // (X != 13 | X u> 15) -> X != 13
case ICmpInst::ICMP_SGT: // (X != 13 | X s> 15) -> X != 13
case ICmpInst::ICMP_NE: // (X != 13 | X != 15) -> true
case ICmpInst::ICMP_ULT: // (X != 13 | X u< 15) -> true
case ICmpInst::ICMP_SLT: // (X != 13 | X s< 15) -> true
- return ReplaceInstUsesWith(I, ConstantInt::getTrue());
+ return ReplaceInstUsesWith(I, Context->getTrue());
}
break;
case ICmpInst::ICMP_ULT:
switch (RHSCC) {
- default: assert(0 && "Unknown integer condition code!");
+ default: llvm_unreachable("Unknown integer condition code!");
case ICmpInst::ICMP_EQ: // (X u< 13 | X == 14) -> no change
break;
case ICmpInst::ICMP_UGT: // (X u< 13 | X u> 15) -> (X-13) u> 2
// this can cause overflow.
if (RHSCst->isMaxValue(false))
return ReplaceInstUsesWith(I, LHS);
- return InsertRangeTest(Val, LHSCst, AddOne(RHSCst), false, false, I);
+ return InsertRangeTest(Val, LHSCst, AddOne(RHSCst, Context),
+ false, false, I);
case ICmpInst::ICMP_SGT: // (X u< 13 | X s> 15) -> no change
break;
case ICmpInst::ICMP_NE: // (X u< 13 | X != 15) -> X != 15
break;
case ICmpInst::ICMP_SLT:
switch (RHSCC) {
- default: assert(0 && "Unknown integer condition code!");
+ default: llvm_unreachable("Unknown integer condition code!");
case ICmpInst::ICMP_EQ: // (X s< 13 | X == 14) -> no change
break;
case ICmpInst::ICMP_SGT: // (X s< 13 | X s> 15) -> (X-13) s> 2
// this can cause overflow.
if (RHSCst->isMaxValue(true))
return ReplaceInstUsesWith(I, LHS);
- return InsertRangeTest(Val, LHSCst, AddOne(RHSCst), true, false, I);
+ return InsertRangeTest(Val, LHSCst, AddOne(RHSCst, Context),
+ true, false, I);
case ICmpInst::ICMP_UGT: // (X s< 13 | X u> 15) -> no change
break;
case ICmpInst::ICMP_NE: // (X s< 13 | X != 15) -> X != 15
break;
case ICmpInst::ICMP_UGT:
switch (RHSCC) {
- default: assert(0 && "Unknown integer condition code!");
+ default: llvm_unreachable("Unknown integer condition code!");
case ICmpInst::ICMP_EQ: // (X u> 13 | X == 15) -> X u> 13
case ICmpInst::ICMP_UGT: // (X u> 13 | X u> 15) -> X u> 13
return ReplaceInstUsesWith(I, LHS);
break;
case ICmpInst::ICMP_NE: // (X u> 13 | X != 15) -> true
case ICmpInst::ICMP_ULT: // (X u> 13 | X u< 15) -> true
- return ReplaceInstUsesWith(I, ConstantInt::getTrue());
+ return ReplaceInstUsesWith(I, Context->getTrue());
case ICmpInst::ICMP_SLT: // (X u> 13 | X s< 15) -> no change
break;
}
break;
case ICmpInst::ICMP_SGT:
switch (RHSCC) {
- default: assert(0 && "Unknown integer condition code!");
+ default: llvm_unreachable("Unknown integer condition code!");
case ICmpInst::ICMP_EQ: // (X s> 13 | X == 15) -> X > 13
case ICmpInst::ICMP_SGT: // (X s> 13 | X s> 15) -> X > 13
return ReplaceInstUsesWith(I, LHS);
break;
case ICmpInst::ICMP_NE: // (X s> 13 | X != 15) -> true
case ICmpInst::ICMP_SLT: // (X s> 13 | X s< 15) -> true
- return ReplaceInstUsesWith(I, ConstantInt::getTrue());
+ return ReplaceInstUsesWith(I, Context->getTrue());
case ICmpInst::ICMP_ULT: // (X s> 13 | X u< 15) -> no change
break;
}
return 0;
}
+Instruction *InstCombiner::FoldOrOfFCmps(Instruction &I, FCmpInst *LHS,
+ FCmpInst *RHS) {
+ if (LHS->getPredicate() == FCmpInst::FCMP_UNO &&
+ RHS->getPredicate() == FCmpInst::FCMP_UNO &&
+ LHS->getOperand(0)->getType() == RHS->getOperand(0)->getType()) {
+ if (ConstantFP *LHSC = dyn_cast<ConstantFP>(LHS->getOperand(1)))
+ if (ConstantFP *RHSC = dyn_cast<ConstantFP>(RHS->getOperand(1))) {
+ // If either of the constants are nans, then the whole thing returns
+ // true.
+ if (LHSC->getValueAPF().isNaN() || RHSC->getValueAPF().isNaN())
+ return ReplaceInstUsesWith(I, Context->getTrue());
+
+ // Otherwise, no need to compare the two constants, compare the
+ // rest.
+ return new FCmpInst(*Context, FCmpInst::FCMP_UNO,
+ LHS->getOperand(0), RHS->getOperand(0));
+ }
+
+ // Handle vector zeros. This occurs because the canonical form of
+ // "fcmp uno x,x" is "fcmp uno x, 0".
+ if (isa<ConstantAggregateZero>(LHS->getOperand(1)) &&
+ isa<ConstantAggregateZero>(RHS->getOperand(1)))
+ return new FCmpInst(*Context, FCmpInst::FCMP_UNO,
+ LHS->getOperand(0), RHS->getOperand(0));
+
+ return 0;
+ }
+
+ Value *Op0LHS = LHS->getOperand(0), *Op0RHS = LHS->getOperand(1);
+ Value *Op1LHS = RHS->getOperand(0), *Op1RHS = RHS->getOperand(1);
+ FCmpInst::Predicate Op0CC = LHS->getPredicate(), Op1CC = RHS->getPredicate();
+
+ if (Op0LHS == Op1RHS && Op0RHS == Op1LHS) {
+ // Swap RHS operands to match LHS.
+ Op1CC = FCmpInst::getSwappedPredicate(Op1CC);
+ std::swap(Op1LHS, Op1RHS);
+ }
+ if (Op0LHS == Op1LHS && Op0RHS == Op1RHS) {
+ // Simplify (fcmp cc0 x, y) | (fcmp cc1 x, y).
+ if (Op0CC == Op1CC)
+ return new FCmpInst(*Context, (FCmpInst::Predicate)Op0CC,
+ Op0LHS, Op0RHS);
+ if (Op0CC == FCmpInst::FCMP_TRUE || Op1CC == FCmpInst::FCMP_TRUE)
+ return ReplaceInstUsesWith(I, Context->getTrue());
+ if (Op0CC == FCmpInst::FCMP_FALSE)
+ return ReplaceInstUsesWith(I, RHS);
+ if (Op1CC == FCmpInst::FCMP_FALSE)
+ return ReplaceInstUsesWith(I, LHS);
+ bool Op0Ordered;
+ bool Op1Ordered;
+ unsigned Op0Pred = getFCmpCode(Op0CC, Op0Ordered);
+ unsigned Op1Pred = getFCmpCode(Op1CC, Op1Ordered);
+ if (Op0Ordered == Op1Ordered) {
+ // If both are ordered or unordered, return a new fcmp with
+ // or'ed predicates.
+ Value *RV = getFCmpValue(Op0Ordered, Op0Pred|Op1Pred,
+ Op0LHS, Op0RHS, Context);
+ if (Instruction *I = dyn_cast<Instruction>(RV))
+ return I;
+ // Otherwise, it's a constant boolean value...
+ return ReplaceInstUsesWith(I, RV);
+ }
+ }
+ return 0;
+}
+
/// FoldOrWithConstants - This helper function folds:
///
/// ((A | B) & C1) | (B & C2)
Value *V1 = 0;
ConstantInt *CI2 = 0;
- if (!match(Op, m_And(m_Value(V1), m_ConstantInt(CI2)))) return 0;
+ if (!match(Op, m_And(m_Value(V1), m_ConstantInt(CI2)), *Context)) return 0;
APInt Xor = CI1->getValue() ^ CI2->getValue();
if (!Xor.isAllOnesValue()) return 0;
Value *Op0 = I.getOperand(0), *Op1 = I.getOperand(1);
if (isa<UndefValue>(Op1)) // X | undef -> -1
- return ReplaceInstUsesWith(I, Constant::getAllOnesValue(I.getType()));
+ return ReplaceInstUsesWith(I, Context->getAllOnesValue(I.getType()));
// or X, X = X
if (Op0 == Op1)
if (ConstantInt *RHS = dyn_cast<ConstantInt>(Op1)) {
ConstantInt *C1 = 0; Value *X = 0;
// (X & C1) | C2 --> (X | C2) & (C1|C2)
- if (match(Op0, m_And(m_Value(X), m_ConstantInt(C1))) && isOnlyUse(Op0)) {
+ if (match(Op0, m_And(m_Value(X), m_ConstantInt(C1)), *Context) &&
+ isOnlyUse(Op0)) {
Instruction *Or = BinaryOperator::CreateOr(X, RHS);
InsertNewInstBefore(Or, I);
Or->takeName(Op0);
return BinaryOperator::CreateAnd(Or,
- ConstantInt::get(RHS->getValue() | C1->getValue()));
+ ConstantInt::get(*Context, RHS->getValue() | C1->getValue()));
}
// (X ^ C1) | C2 --> (X | C2) ^ (C1&~C2)
- if (match(Op0, m_Xor(m_Value(X), m_ConstantInt(C1))) && isOnlyUse(Op0)) {
+ if (match(Op0, m_Xor(m_Value(X), m_ConstantInt(C1)), *Context) &&
+ isOnlyUse(Op0)) {
Instruction *Or = BinaryOperator::CreateOr(X, RHS);
InsertNewInstBefore(Or, I);
Or->takeName(Op0);
return BinaryOperator::CreateXor(Or,
- ConstantInt::get(C1->getValue() & ~RHS->getValue()));
+ ConstantInt::get(*Context, C1->getValue() & ~RHS->getValue()));
}
// Try to fold constant and into select arguments.
Value *A = 0, *B = 0;
ConstantInt *C1 = 0, *C2 = 0;
- if (match(Op0, m_And(m_Value(A), m_Value(B))))
+ if (match(Op0, m_And(m_Value(A), m_Value(B)), *Context))
if (A == Op1 || B == Op1) // (A & ?) | A --> A
return ReplaceInstUsesWith(I, Op1);
- if (match(Op1, m_And(m_Value(A), m_Value(B))))
+ if (match(Op1, m_And(m_Value(A), m_Value(B)), *Context))
if (A == Op0 || B == Op0) // A | (A & ?) --> A
return ReplaceInstUsesWith(I, Op0);
// (A | B) | C and A | (B | C) -> bswap if possible.
// (A >> B) | (C << D) and (A << B) | (B >> C) -> bswap if possible.
- if (match(Op0, m_Or(m_Value(), m_Value())) ||
- match(Op1, m_Or(m_Value(), m_Value())) ||
- (match(Op0, m_Shift(m_Value(), m_Value())) &&
- match(Op1, m_Shift(m_Value(), m_Value())))) {
+ if (match(Op0, m_Or(m_Value(), m_Value()), *Context) ||
+ match(Op1, m_Or(m_Value(), m_Value()), *Context) ||
+ (match(Op0, m_Shift(m_Value(), m_Value()), *Context) &&
+ match(Op1, m_Shift(m_Value(), m_Value()), *Context))) {
if (Instruction *BSwap = MatchBSwap(I))
return BSwap;
}
// (X^C)|Y -> (X|Y)^C iff Y&C == 0
- if (Op0->hasOneUse() && match(Op0, m_Xor(m_Value(A), m_ConstantInt(C1))) &&
+ if (Op0->hasOneUse() &&
+ match(Op0, m_Xor(m_Value(A), m_ConstantInt(C1)), *Context) &&
MaskedValueIsZero(Op1, C1->getValue())) {
Instruction *NOr = BinaryOperator::CreateOr(A, Op1);
InsertNewInstBefore(NOr, I);
}
// Y|(X^C) -> (X|Y)^C iff Y&C == 0
- if (Op1->hasOneUse() && match(Op1, m_Xor(m_Value(A), m_ConstantInt(C1))) &&
+ if (Op1->hasOneUse() &&
+ match(Op1, m_Xor(m_Value(A), m_ConstantInt(C1)), *Context) &&
MaskedValueIsZero(Op0, C1->getValue())) {
Instruction *NOr = BinaryOperator::CreateOr(A, Op0);
InsertNewInstBefore(NOr, I);
// (A & C)|(B & D)
Value *C = 0, *D = 0;
- if (match(Op0, m_And(m_Value(A), m_Value(C))) &&
- match(Op1, m_And(m_Value(B), m_Value(D)))) {
+ if (match(Op0, m_And(m_Value(A), m_Value(C)), *Context) &&
+ match(Op1, m_And(m_Value(B), m_Value(D)), *Context)) {
Value *V1 = 0, *V2 = 0, *V3 = 0;
C1 = dyn_cast<ConstantInt>(C);
C2 = dyn_cast<ConstantInt>(D);
// replace with V+N.
if (C1->getValue() == ~C2->getValue()) {
if ((C2->getValue() & (C2->getValue()+1)) == 0 && // C2 == 0+1+
- match(A, m_Add(m_Value(V1), m_Value(V2)))) {
+ match(A, m_Add(m_Value(V1), m_Value(V2)), *Context)) {
// Add commutes, try both ways.
if (V1 == B && MaskedValueIsZero(V2, C2->getValue()))
return ReplaceInstUsesWith(I, A);
}
// Or commutes, try both ways.
if ((C1->getValue() & (C1->getValue()+1)) == 0 &&
- match(B, m_Add(m_Value(V1), m_Value(V2)))) {
+ match(B, m_Add(m_Value(V1), m_Value(V2)), *Context)) {
// Add commutes, try both ways.
if (V1 == A && MaskedValueIsZero(V2, C1->getValue()))
return ReplaceInstUsesWith(I, B);
}
// (A & (C0?-1:0)) | (B & ~(C0?-1:0)) -> C0 ? A : B, and commuted variants
- if (Instruction *Match = MatchSelectFromAndOr(A, B, C, D))
+ if (Instruction *Match = MatchSelectFromAndOr(A, B, C, D, Context))
return Match;
- if (Instruction *Match = MatchSelectFromAndOr(B, A, D, C))
+ if (Instruction *Match = MatchSelectFromAndOr(B, A, D, C, Context))
return Match;
- if (Instruction *Match = MatchSelectFromAndOr(C, B, A, D))
+ if (Instruction *Match = MatchSelectFromAndOr(C, B, A, D, Context))
return Match;
- if (Instruction *Match = MatchSelectFromAndOr(D, A, B, C))
+ if (Instruction *Match = MatchSelectFromAndOr(D, A, B, C, Context))
return Match;
// ((A&~B)|(~A&B)) -> A^B
- if ((match(C, m_Not(m_Specific(D))) &&
- match(B, m_Not(m_Specific(A)))))
+ if ((match(C, m_Not(m_Specific(D)), *Context) &&
+ match(B, m_Not(m_Specific(A)), *Context)))
return BinaryOperator::CreateXor(A, D);
// ((~B&A)|(~A&B)) -> A^B
- if ((match(A, m_Not(m_Specific(D))) &&
- match(B, m_Not(m_Specific(C)))))
+ if ((match(A, m_Not(m_Specific(D)), *Context) &&
+ match(B, m_Not(m_Specific(C)), *Context)))
return BinaryOperator::CreateXor(C, D);
// ((A&~B)|(B&~A)) -> A^B
- if ((match(C, m_Not(m_Specific(B))) &&
- match(D, m_Not(m_Specific(A)))))
+ if ((match(C, m_Not(m_Specific(B)), *Context) &&
+ match(D, m_Not(m_Specific(A)), *Context)))
return BinaryOperator::CreateXor(A, B);
// ((~B&A)|(B&~A)) -> A^B
- if ((match(A, m_Not(m_Specific(B))) &&
- match(D, m_Not(m_Specific(C)))))
+ if ((match(A, m_Not(m_Specific(B)), *Context) &&
+ match(D, m_Not(m_Specific(C)), *Context)))
return BinaryOperator::CreateXor(C, B);
}
}
// ((A|B)&1)|(B&-2) -> (A&1) | B
- if (match(Op0, m_And(m_Or(m_Value(A), m_Value(B)), m_Value(C))) ||
- match(Op0, m_And(m_Value(C), m_Or(m_Value(A), m_Value(B))))) {
+ if (match(Op0, m_And(m_Or(m_Value(A), m_Value(B)), m_Value(C)), *Context) ||
+ match(Op0, m_And(m_Value(C), m_Or(m_Value(A), m_Value(B))), *Context)) {
Instruction *Ret = FoldOrWithConstants(I, Op1, A, B, C);
if (Ret) return Ret;
}
// (B&-2)|((A|B)&1) -> (A&1) | B
- if (match(Op1, m_And(m_Or(m_Value(A), m_Value(B)), m_Value(C))) ||
- match(Op1, m_And(m_Value(C), m_Or(m_Value(A), m_Value(B))))) {
+ if (match(Op1, m_And(m_Or(m_Value(A), m_Value(B)), m_Value(C)), *Context) ||
+ match(Op1, m_And(m_Value(C), m_Or(m_Value(A), m_Value(B))), *Context)) {
Instruction *Ret = FoldOrWithConstants(I, Op0, A, B, C);
if (Ret) return Ret;
}
- if (match(Op0, m_Not(m_Value(A)))) { // ~A | Op1
+ if (match(Op0, m_Not(m_Value(A)), *Context)) { // ~A | Op1
if (A == Op1) // ~A | A == -1
- return ReplaceInstUsesWith(I, Constant::getAllOnesValue(I.getType()));
+ return ReplaceInstUsesWith(I, Context->getAllOnesValue(I.getType()));
} else {
A = 0;
}
// Note, A is still live here!
- if (match(Op1, m_Not(m_Value(B)))) { // Op0 | ~B
+ if (match(Op1, m_Not(m_Value(B)), *Context)) { // Op0 | ~B
if (Op0 == B)
- return ReplaceInstUsesWith(I, Constant::getAllOnesValue(I.getType()));
+ return ReplaceInstUsesWith(I, Context->getAllOnesValue(I.getType()));
// (~A | ~B) == (~(A & B)) - De Morgan's Law
if (A && isOnlyUse(Op0) && isOnlyUse(Op1)) {
Value *And = InsertNewInstBefore(BinaryOperator::CreateAnd(A, B,
I.getName()+".demorgan"), I);
- return BinaryOperator::CreateNot(And);
+ return BinaryOperator::CreateNot(*Context, And);
}
}
// (icmp1 A, B) | (icmp2 A, B) --> (icmp3 A, B)
if (ICmpInst *RHS = dyn_cast<ICmpInst>(I.getOperand(1))) {
- if (Instruction *R = AssociativeOpt(I, FoldICmpLogical(*this, RHS)))
+ if (Instruction *R = AssociativeOpt(I, FoldICmpLogical(*this, RHS),Context))
return R;
if (ICmpInst *LHS = dyn_cast<ICmpInst>(I.getOperand(0)))
if (!isa<ICmpInst>(Op0C->getOperand(0)) ||
!isa<ICmpInst>(Op1C->getOperand(0))) {
const Type *SrcTy = Op0C->getOperand(0)->getType();
- if (SrcTy == Op1C->getOperand(0)->getType() && SrcTy->isInteger() &&
+ if (SrcTy == Op1C->getOperand(0)->getType() &&
+ SrcTy->isIntOrIntVector() &&
// Only do this if the casts both really cause code to be
// generated.
ValueRequiresCast(Op0C->getOpcode(), Op0C->getOperand(0),
// (fcmp uno x, c) | (fcmp uno y, c) -> (fcmp uno x, y)
if (FCmpInst *LHS = dyn_cast<FCmpInst>(I.getOperand(0))) {
- if (FCmpInst *RHS = dyn_cast<FCmpInst>(I.getOperand(1))) {
- if (LHS->getPredicate() == FCmpInst::FCMP_UNO &&
- RHS->getPredicate() == FCmpInst::FCMP_UNO &&
- LHS->getOperand(0)->getType() == RHS->getOperand(0)->getType()) {
- if (ConstantFP *LHSC = dyn_cast<ConstantFP>(LHS->getOperand(1)))
- if (ConstantFP *RHSC = dyn_cast<ConstantFP>(RHS->getOperand(1))) {
- // If either of the constants are nans, then the whole thing returns
- // true.
- if (LHSC->getValueAPF().isNaN() || RHSC->getValueAPF().isNaN())
- return ReplaceInstUsesWith(I, ConstantInt::getTrue());
-
- // Otherwise, no need to compare the two constants, compare the
- // rest.
- return new FCmpInst(FCmpInst::FCMP_UNO, LHS->getOperand(0),
- RHS->getOperand(0));
- }
- } else {
- Value *Op0LHS, *Op0RHS, *Op1LHS, *Op1RHS;
- FCmpInst::Predicate Op0CC, Op1CC;
- if (match(Op0, m_FCmp(Op0CC, m_Value(Op0LHS), m_Value(Op0RHS))) &&
- match(Op1, m_FCmp(Op1CC, m_Value(Op1LHS), m_Value(Op1RHS)))) {
- if (Op0LHS == Op1RHS && Op0RHS == Op1LHS) {
- // Swap RHS operands to match LHS.
- Op1CC = FCmpInst::getSwappedPredicate(Op1CC);
- std::swap(Op1LHS, Op1RHS);
- }
- if (Op0LHS == Op1LHS && Op0RHS == Op1RHS) {
- // Simplify (fcmp cc0 x, y) | (fcmp cc1 x, y).
- if (Op0CC == Op1CC)
- return new FCmpInst((FCmpInst::Predicate)Op0CC, Op0LHS, Op0RHS);
- else if (Op0CC == FCmpInst::FCMP_TRUE ||
- Op1CC == FCmpInst::FCMP_TRUE)
- return ReplaceInstUsesWith(I, ConstantInt::getTrue());
- else if (Op0CC == FCmpInst::FCMP_FALSE)
- return ReplaceInstUsesWith(I, Op1);
- else if (Op1CC == FCmpInst::FCMP_FALSE)
- return ReplaceInstUsesWith(I, Op0);
- bool Op0Ordered;
- bool Op1Ordered;
- unsigned Op0Pred = getFCmpCode(Op0CC, Op0Ordered);
- unsigned Op1Pred = getFCmpCode(Op1CC, Op1Ordered);
- if (Op0Ordered == Op1Ordered) {
- // If both are ordered or unordered, return a new fcmp with
- // or'ed predicates.
- Value *RV = getFCmpValue(Op0Ordered, Op0Pred|Op1Pred,
- Op0LHS, Op0RHS);
- if (Instruction *I = dyn_cast<Instruction>(RV))
- return I;
- // Otherwise, it's a constant boolean value...
- return ReplaceInstUsesWith(I, RV);
- }
- }
- }
- }
- }
+ if (FCmpInst *RHS = dyn_cast<FCmpInst>(I.getOperand(1)))
+ if (Instruction *Res = FoldOrOfFCmps(I, LHS, RHS))
+ return Res;
}
return Changed ? &I : 0;
if (isa<UndefValue>(Op0))
// Handle undef ^ undef -> 0 special case. This is a common
// idiom (misuse).
- return ReplaceInstUsesWith(I, Constant::getNullValue(I.getType()));
+ return ReplaceInstUsesWith(I, Context->getNullValue(I.getType()));
return ReplaceInstUsesWith(I, Op1); // X ^ undef -> undef
}
// xor X, X = 0, even if X is nested in a sequence of Xor's.
- if (Instruction *Result = AssociativeOpt(I, XorSelf(Op1))) {
+ if (Instruction *Result = AssociativeOpt(I, XorSelf(Op1), Context)) {
assert(Result == &I && "AssociativeOpt didn't work?"); Result=Result;
- return ReplaceInstUsesWith(I, Constant::getNullValue(I.getType()));
+ return ReplaceInstUsesWith(I, Context->getNullValue(I.getType()));
}
// See if we can simplify any instructions used by the instruction whose sole
return ReplaceInstUsesWith(I, Op0); // X ^ <0,0> -> X
// Is this a ~ operation?
- if (Value *NotOp = dyn_castNotVal(&I)) {
+ if (Value *NotOp = dyn_castNotVal(&I, Context)) {
// ~(~X & Y) --> (X | ~Y) - De Morgan's Law
// ~(~X | Y) === (X & ~Y) - De Morgan's Law
if (BinaryOperator *Op0I = dyn_cast<BinaryOperator>(NotOp)) {
if (Op0I->getOpcode() == Instruction::And ||
Op0I->getOpcode() == Instruction::Or) {
- if (dyn_castNotVal(Op0I->getOperand(1))) Op0I->swapOperands();
- if (Value *Op0NotVal = dyn_castNotVal(Op0I->getOperand(0))) {
+ if (dyn_castNotVal(Op0I->getOperand(1), Context)) Op0I->swapOperands();
+ if (Value *Op0NotVal = dyn_castNotVal(Op0I->getOperand(0), Context)) {
Instruction *NotY =
- BinaryOperator::CreateNot(Op0I->getOperand(1),
+ BinaryOperator::CreateNot(*Context, Op0I->getOperand(1),
Op0I->getOperand(1)->getName()+".not");
InsertNewInstBefore(NotY, I);
if (Op0I->getOpcode() == Instruction::And)
if (ConstantInt *RHS = dyn_cast<ConstantInt>(Op1)) {
- if (RHS == ConstantInt::getTrue() && Op0->hasOneUse()) {
+ if (RHS == Context->getTrue() && Op0->hasOneUse()) {
// xor (cmp A, B), true = not (cmp A, B) = !cmp A, B
if (ICmpInst *ICI = dyn_cast<ICmpInst>(Op0))
- return new ICmpInst(ICI->getInversePredicate(),
+ return new ICmpInst(*Context, ICI->getInversePredicate(),
ICI->getOperand(0), ICI->getOperand(1));
if (FCmpInst *FCI = dyn_cast<FCmpInst>(Op0))
- return new FCmpInst(FCI->getInversePredicate(),
+ return new FCmpInst(*Context, FCI->getInversePredicate(),
FCI->getOperand(0), FCI->getOperand(1));
}
if (CI->hasOneUse() && Op0C->hasOneUse()) {
Instruction::CastOps Opcode = Op0C->getOpcode();
if (Opcode == Instruction::ZExt || Opcode == Instruction::SExt) {
- if (RHS == ConstantExpr::getCast(Opcode, ConstantInt::getTrue(),
+ if (RHS == Context->getConstantExprCast(Opcode,
+ Context->getTrue(),
Op0C->getDestTy())) {
Instruction *NewCI = InsertNewInstBefore(CmpInst::Create(
+ *Context,
CI->getOpcode(), CI->getInversePredicate(),
CI->getOperand(0), CI->getOperand(1)), I);
NewCI->takeName(CI);
// ~(c-X) == X-c-1 == X+(-c-1)
if (Op0I->getOpcode() == Instruction::Sub && RHS->isAllOnesValue())
if (Constant *Op0I0C = dyn_cast<Constant>(Op0I->getOperand(0))) {
- Constant *NegOp0I0C = ConstantExpr::getNeg(Op0I0C);
- Constant *ConstantRHS = ConstantExpr::getSub(NegOp0I0C,
- ConstantInt::get(I.getType(), 1));
+ Constant *NegOp0I0C = Context->getConstantExprNeg(Op0I0C);
+ Constant *ConstantRHS = Context->getConstantExprSub(NegOp0I0C,
+ ConstantInt::get(I.getType(), 1));
return BinaryOperator::CreateAdd(Op0I->getOperand(1), ConstantRHS);
}
if (Op0I->getOpcode() == Instruction::Add) {
// ~(X-c) --> (-c-1)-X
if (RHS->isAllOnesValue()) {
- Constant *NegOp0CI = ConstantExpr::getNeg(Op0CI);
+ Constant *NegOp0CI = Context->getConstantExprNeg(Op0CI);
return BinaryOperator::CreateSub(
- ConstantExpr::getSub(NegOp0CI,
- ConstantInt::get(I.getType(), 1)),
- Op0I->getOperand(0));
+ Context->getConstantExprSub(NegOp0CI,
+ ConstantInt::get(I.getType(), 1)),
+ Op0I->getOperand(0));
} else if (RHS->getValue().isSignBit()) {
// (X + C) ^ signbit -> (X + C + signbit)
- Constant *C = ConstantInt::get(RHS->getValue() + Op0CI->getValue());
+ Constant *C = ConstantInt::get(*Context,
+ RHS->getValue() + Op0CI->getValue());
return BinaryOperator::CreateAdd(Op0I->getOperand(0), C);
}
} else if (Op0I->getOpcode() == Instruction::Or) {
// (X|C1)^C2 -> X^(C1|C2) iff X&~C1 == 0
if (MaskedValueIsZero(Op0I->getOperand(0), Op0CI->getValue())) {
- Constant *NewRHS = ConstantExpr::getOr(Op0CI, RHS);
+ Constant *NewRHS = Context->getConstantExprOr(Op0CI, RHS);
// Anything in both C1 and C2 is known to be zero, remove it from
// NewRHS.
- Constant *CommonBits = ConstantExpr::getAnd(Op0CI, RHS);
- NewRHS = ConstantExpr::getAnd(NewRHS,
- ConstantExpr::getNot(CommonBits));
+ Constant *CommonBits = Context->getConstantExprAnd(Op0CI, RHS);
+ NewRHS = Context->getConstantExprAnd(NewRHS,
+ Context->getConstantExprNot(CommonBits));
AddToWorkList(Op0I);
I.setOperand(0, Op0I->getOperand(0));
I.setOperand(1, NewRHS);
return NV;
}
- if (Value *X = dyn_castNotVal(Op0)) // ~A ^ A == -1
+ if (Value *X = dyn_castNotVal(Op0, Context)) // ~A ^ A == -1
if (X == Op1)
- return ReplaceInstUsesWith(I, Constant::getAllOnesValue(I.getType()));
+ return ReplaceInstUsesWith(I, Context->getAllOnesValue(I.getType()));
- if (Value *X = dyn_castNotVal(Op1)) // A ^ ~A == -1
+ if (Value *X = dyn_castNotVal(Op1, Context)) // A ^ ~A == -1
if (X == Op0)
- return ReplaceInstUsesWith(I, Constant::getAllOnesValue(I.getType()));
+ return ReplaceInstUsesWith(I, Context->getAllOnesValue(I.getType()));
BinaryOperator *Op1I = dyn_cast<BinaryOperator>(Op1);
if (Op1I) {
Value *A, *B;
- if (match(Op1I, m_Or(m_Value(A), m_Value(B)))) {
+ if (match(Op1I, m_Or(m_Value(A), m_Value(B)), *Context)) {
if (A == Op0) { // B^(B|A) == (A|B)^B
Op1I->swapOperands();
I.swapOperands();
I.swapOperands(); // Simplified below.
std::swap(Op0, Op1);
}
- } else if (match(Op1I, m_Xor(m_Specific(Op0), m_Value(B)))) {
+ } else if (match(Op1I, m_Xor(m_Specific(Op0), m_Value(B)), *Context)) {
return ReplaceInstUsesWith(I, B); // A^(A^B) == B
- } else if (match(Op1I, m_Xor(m_Value(A), m_Specific(Op0)))) {
+ } else if (match(Op1I, m_Xor(m_Value(A), m_Specific(Op0)), *Context)) {
return ReplaceInstUsesWith(I, A); // A^(B^A) == B
- } else if (match(Op1I, m_And(m_Value(A), m_Value(B))) && Op1I->hasOneUse()){
+ } else if (match(Op1I, m_And(m_Value(A), m_Value(B)), *Context) &&
+ Op1I->hasOneUse()){
if (A == Op0) { // A^(A&B) -> A^(B&A)
Op1I->swapOperands();
std::swap(A, B);
BinaryOperator *Op0I = dyn_cast<BinaryOperator>(Op0);
if (Op0I) {
Value *A, *B;
- if (match(Op0I, m_Or(m_Value(A), m_Value(B))) && Op0I->hasOneUse()) {
+ if (match(Op0I, m_Or(m_Value(A), m_Value(B)), *Context) &&
+ Op0I->hasOneUse()) {
if (A == Op1) // (B|A)^B == (A|B)^B
std::swap(A, B);
if (B == Op1) { // (A|B)^B == A & ~B
Instruction *NotB =
- InsertNewInstBefore(BinaryOperator::CreateNot(Op1, "tmp"), I);
+ InsertNewInstBefore(BinaryOperator::CreateNot(*Context,
+ Op1, "tmp"), I);
return BinaryOperator::CreateAnd(A, NotB);
}
- } else if (match(Op0I, m_Xor(m_Specific(Op1), m_Value(B)))) {
+ } else if (match(Op0I, m_Xor(m_Specific(Op1), m_Value(B)), *Context)) {
return ReplaceInstUsesWith(I, B); // (A^B)^A == B
- } else if (match(Op0I, m_Xor(m_Value(A), m_Specific(Op1)))) {
+ } else if (match(Op0I, m_Xor(m_Value(A), m_Specific(Op1)), *Context)) {
return ReplaceInstUsesWith(I, A); // (B^A)^A == B
- } else if (match(Op0I, m_And(m_Value(A), m_Value(B))) && Op0I->hasOneUse()){
+ } else if (match(Op0I, m_And(m_Value(A), m_Value(B)), *Context) &&
+ Op0I->hasOneUse()){
if (A == Op1) // (A&B)^A -> (B&A)^A
std::swap(A, B);
if (B == Op1 && // (B&A)^A == ~B & A
!isa<ConstantInt>(Op1)) { // Canonical form is (B&C)^C
Instruction *N =
- InsertNewInstBefore(BinaryOperator::CreateNot(A, "tmp"), I);
+ InsertNewInstBefore(BinaryOperator::CreateNot(*Context, A, "tmp"), I);
return BinaryOperator::CreateAnd(N, Op1);
}
}
if (Op0I && Op1I) {
Value *A, *B, *C, *D;
// (A & B)^(A | B) -> A ^ B
- if (match(Op0I, m_And(m_Value(A), m_Value(B))) &&
- match(Op1I, m_Or(m_Value(C), m_Value(D)))) {
+ if (match(Op0I, m_And(m_Value(A), m_Value(B)), *Context) &&
+ match(Op1I, m_Or(m_Value(C), m_Value(D)), *Context)) {
if ((A == C && B == D) || (A == D && B == C))
return BinaryOperator::CreateXor(A, B);
}
// (A | B)^(A & B) -> A ^ B
- if (match(Op0I, m_Or(m_Value(A), m_Value(B))) &&
- match(Op1I, m_And(m_Value(C), m_Value(D)))) {
+ if (match(Op0I, m_Or(m_Value(A), m_Value(B)), *Context) &&
+ match(Op1I, m_And(m_Value(C), m_Value(D)), *Context)) {
if ((A == C && B == D) || (A == D && B == C))
return BinaryOperator::CreateXor(A, B);
}
// (A & B)^(C & D)
if ((Op0I->hasOneUse() || Op1I->hasOneUse()) &&
- match(Op0I, m_And(m_Value(A), m_Value(B))) &&
- match(Op1I, m_And(m_Value(C), m_Value(D)))) {
+ match(Op0I, m_And(m_Value(A), m_Value(B)), *Context) &&
+ match(Op1I, m_And(m_Value(C), m_Value(D)), *Context)) {
// (X & Y)^(X & Y) -> (Y^Z) & X
Value *X = 0, *Y = 0, *Z = 0;
if (A == C)
// (icmp1 A, B) ^ (icmp2 A, B) --> (icmp3 A, B)
if (ICmpInst *RHS = dyn_cast<ICmpInst>(I.getOperand(1)))
- if (Instruction *R = AssociativeOpt(I, FoldICmpLogical(*this, RHS)))
+ if (Instruction *R = AssociativeOpt(I, FoldICmpLogical(*this, RHS),Context))
return R;
// fold (xor (cast A), (cast B)) -> (cast (xor A, B))
return Changed ? &I : 0;
}
-static ConstantInt *ExtractElement(Constant *V, Constant *Idx) {
- return cast<ConstantInt>(ConstantExpr::getExtractElement(V, Idx));
+static ConstantInt *ExtractElement(Constant *V, Constant *Idx,
+ LLVMContext *Context) {
+ return cast<ConstantInt>(Context->getConstantExprExtractElement(V, Idx));
}
static bool HasAddOverflow(ConstantInt *Result,
/// AddWithOverflow - Compute Result = In1+In2, returning true if the result
/// overflowed for this type.
static bool AddWithOverflow(Constant *&Result, Constant *In1,
- Constant *In2, bool IsSigned = false) {
- Result = ConstantExpr::getAdd(In1, In2);
+ Constant *In2, LLVMContext *Context,
+ bool IsSigned = false) {
+ Result = Context->getConstantExprAdd(In1, In2);
if (const VectorType *VTy = dyn_cast<VectorType>(In1->getType())) {
for (unsigned i = 0, e = VTy->getNumElements(); i != e; ++i) {
Constant *Idx = ConstantInt::get(Type::Int32Ty, i);
- if (HasAddOverflow(ExtractElement(Result, Idx),
- ExtractElement(In1, Idx),
- ExtractElement(In2, Idx),
+ if (HasAddOverflow(ExtractElement(Result, Idx, Context),
+ ExtractElement(In1, Idx, Context),
+ ExtractElement(In2, Idx, Context),
IsSigned))
return true;
}
/// SubWithOverflow - Compute Result = In1-In2, returning true if the result
/// overflowed for this type.
static bool SubWithOverflow(Constant *&Result, Constant *In1,
- Constant *In2, bool IsSigned = false) {
- Result = ConstantExpr::getSub(In1, In2);
+ Constant *In2, LLVMContext *Context,
+ bool IsSigned = false) {
+ Result = Context->getConstantExprSub(In1, In2);
if (const VectorType *VTy = dyn_cast<VectorType>(In1->getType())) {
for (unsigned i = 0, e = VTy->getNumElements(); i != e; ++i) {
Constant *Idx = ConstantInt::get(Type::Int32Ty, i);
- if (HasSubOverflow(ExtractElement(Result, Idx),
- ExtractElement(In1, Idx),
- ExtractElement(In2, Idx),
+ if (HasSubOverflow(ExtractElement(Result, Idx, Context),
+ ExtractElement(In1, Idx, Context),
+ ExtractElement(In2, Idx, Context),
IsSigned))
return true;
}
/// code necessary to compute the offset from the base pointer (without adding
/// in the base pointer). Return the result as a signed integer of intptr size.
static Value *EmitGEPOffset(User *GEP, Instruction &I, InstCombiner &IC) {
- TargetData &TD = IC.getTargetData();
+ TargetData &TD = *IC.getTargetData();
gep_type_iterator GTI = gep_type_begin(GEP);
const Type *IntPtrTy = TD.getIntPtrType();
- Value *Result = Constant::getNullValue(IntPtrTy);
+ LLVMContext *Context = IC.getContext();
+ Value *Result = Context->getNullValue(IntPtrTy);
// Build a mask for high order bits.
unsigned IntPtrWidth = TD.getPointerSizeInBits();
Size = TD.getStructLayout(STy)->getElementOffset(OpC->getZExtValue());
if (ConstantInt *RC = dyn_cast<ConstantInt>(Result))
- Result = ConstantInt::get(RC->getValue() + APInt(IntPtrWidth, Size));
+ Result =
+ ConstantInt::get(*Context,
+ RC->getValue() + APInt(IntPtrWidth, Size));
else
Result = IC.InsertNewInstBefore(
BinaryOperator::CreateAdd(Result,
- ConstantInt::get(IntPtrTy, Size),
+ ConstantInt::get(IntPtrTy, Size),
GEP->getName()+".offs"), I);
continue;
}
Constant *Scale = ConstantInt::get(IntPtrTy, Size);
- Constant *OC = ConstantExpr::getIntegerCast(OpC, IntPtrTy, true /*SExt*/);
- Scale = ConstantExpr::getMul(OC, Scale);
+ Constant *OC =
+ Context->getConstantExprIntegerCast(OpC, IntPtrTy, true /*SExt*/);
+ Scale = Context->getConstantExprMul(OC, Scale);
if (Constant *RC = dyn_cast<Constant>(Result))
- Result = ConstantExpr::getAdd(RC, Scale);
+ Result = Context->getConstantExprAdd(RC, Scale);
else {
// Emit an add instruction.
Result = IC.InsertNewInstBefore(
// Convert to correct type.
if (Op->getType() != IntPtrTy) {
if (Constant *OpC = dyn_cast<Constant>(Op))
- Op = ConstantExpr::getIntegerCast(OpC, IntPtrTy, true);
+ Op = Context->getConstantExprIntegerCast(OpC, IntPtrTy, true);
else
Op = IC.InsertNewInstBefore(CastInst::CreateIntegerCast(Op, IntPtrTy,
true,
if (Size != 1) {
Constant *Scale = ConstantInt::get(IntPtrTy, Size);
if (Constant *OpC = dyn_cast<Constant>(Op))
- Op = ConstantExpr::getMul(OpC, Scale);
+ Op = Context->getConstantExprMul(OpC, Scale);
else // We'll let instcombine(mul) convert this to a shl if possible.
Op = IC.InsertNewInstBefore(BinaryOperator::CreateMul(Op, Scale,
GEP->getName()+".idx"), I);
// Emit an add instruction.
if (isa<Constant>(Op) && isa<Constant>(Result))
- Result = ConstantExpr::getAdd(cast<Constant>(Op),
+ Result = Context->getConstantExprAdd(cast<Constant>(Op),
cast<Constant>(Result));
else
Result = IC.InsertNewInstBefore(BinaryOperator::CreateAdd(Op, Result,
}
-/// EvaluateGEPOffsetExpression - Return an value that can be used to compare of
-/// the *offset* implied by GEP to zero. For example, if we have &A[i], we want
-/// to return 'i' for "icmp ne i, 0". Note that, in general, indices can be
-/// complex, and scales are involved. The above expression would also be legal
-/// to codegen as "icmp ne (i*4), 0" (assuming A is a pointer to i32). This
-/// later form is less amenable to optimization though, and we are allowed to
-/// generate the first by knowing that pointer arithmetic doesn't overflow.
+/// EvaluateGEPOffsetExpression - Return a value that can be used to compare
+/// the *offset* implied by a GEP to zero. For example, if we have &A[i], we
+/// want to return 'i' for "icmp ne i, 0". Note that, in general, indices can
+/// be complex, and scales are involved. The above expression would also be
+/// legal to codegen as "icmp ne (i*4), 0" (assuming A is a pointer to i32).
+/// This later form is less amenable to optimization though, and we are allowed
+/// to generate the first by knowing that pointer arithmetic doesn't overflow.
///
/// If we can't emit an optimized form for this expression, this returns null.
///
static Value *EvaluateGEPOffsetExpression(User *GEP, Instruction &I,
InstCombiner &IC) {
- TargetData &TD = IC.getTargetData();
+ TargetData &TD = *IC.getTargetData();
gep_type_iterator GTI = gep_type_begin(GEP);
// Check to see if this gep only has a single variable index. If so, and if
RHS = BCI->getOperand(0);
Value *PtrBase = GEPLHS->getOperand(0);
- if (PtrBase == RHS) {
+ if (TD && PtrBase == RHS) {
// ((gep Ptr, OFFSET) cmp Ptr) ---> (OFFSET cmp 0).
// This transformation (ignoring the base and scales) is valid because we
// know pointers can't overflow. See if we can output an optimized form.
// If not, synthesize the offset the hard way.
if (Offset == 0)
Offset = EmitGEPOffset(GEPLHS, I, *this);
- return new ICmpInst(ICmpInst::getSignedPredicate(Cond), Offset,
- Constant::getNullValue(Offset->getType()));
+ return new ICmpInst(*Context, ICmpInst::getSignedPredicate(Cond), Offset,
+ Context->getNullValue(Offset->getType()));
} else if (User *GEPRHS = dyn_castGetElementPtr(RHS)) {
// If the base pointers are different, but the indices are the same, just
// compare the base pointer.
// If all indices are the same, just compare the base pointers.
if (IndicesTheSame)
- return new ICmpInst(ICmpInst::getSignedPredicate(Cond),
+ return new ICmpInst(*Context, ICmpInst::getSignedPredicate(Cond),
GEPLHS->getOperand(0), GEPRHS->getOperand(0));
// Otherwise, the base pointers are different and the indices are
Value *LHSV = GEPLHS->getOperand(DiffOperand);
Value *RHSV = GEPRHS->getOperand(DiffOperand);
// Make sure we do a signed comparison here.
- return new ICmpInst(ICmpInst::getSignedPredicate(Cond), LHSV, RHSV);
+ return new ICmpInst(*Context,
+ ICmpInst::getSignedPredicate(Cond), LHSV, RHSV);
}
}
// Only lower this if the icmp is the only user of the GEP or if we expect
// the result to fold to a constant!
- if ((isa<ConstantExpr>(GEPLHS) || GEPLHS->hasOneUse()) &&
+ if (TD &&
+ (isa<ConstantExpr>(GEPLHS) || GEPLHS->hasOneUse()) &&
(isa<ConstantExpr>(GEPRHS) || GEPRHS->hasOneUse())) {
// ((gep Ptr, OFFSET1) cmp (gep Ptr, OFFSET2) ---> (OFFSET1 cmp OFFSET2)
Value *L = EmitGEPOffset(GEPLHS, I, *this);
Value *R = EmitGEPOffset(GEPRHS, I, *this);
- return new ICmpInst(ICmpInst::getSignedPredicate(Cond), L, R);
+ return new ICmpInst(*Context, ICmpInst::getSignedPredicate(Cond), L, R);
}
}
return 0;
ICmpInst::Predicate Pred;
switch (I.getPredicate()) {
- default: assert(0 && "Unexpected predicate!");
+ default: llvm_unreachable("Unexpected predicate!");
case FCmpInst::FCMP_UEQ:
case FCmpInst::FCMP_OEQ:
Pred = ICmpInst::ICMP_EQ;
Pred = ICmpInst::ICMP_NE;
break;
case FCmpInst::FCMP_ORD:
- return ReplaceInstUsesWith(I, ConstantInt::getTrue());
+ return ReplaceInstUsesWith(I, Context->getTrue());
case FCmpInst::FCMP_UNO:
- return ReplaceInstUsesWith(I, ConstantInt::getFalse());
+ return ReplaceInstUsesWith(I, Context->getFalse());
}
const IntegerType *IntTy = cast<IntegerType>(LHSI->getOperand(0)->getType());
if (SMax.compare(RHS) == APFloat::cmpLessThan) { // smax < 13123.0
if (Pred == ICmpInst::ICMP_NE || Pred == ICmpInst::ICMP_SLT ||
Pred == ICmpInst::ICMP_SLE)
- return ReplaceInstUsesWith(I, ConstantInt::getTrue());
- return ReplaceInstUsesWith(I, ConstantInt::getFalse());
+ return ReplaceInstUsesWith(I, Context->getTrue());
+ return ReplaceInstUsesWith(I, Context->getFalse());
}
} else {
// If the RHS value is > UnsignedMax, fold the comparison. This handles
if (UMax.compare(RHS) == APFloat::cmpLessThan) { // umax < 13123.0
if (Pred == ICmpInst::ICMP_NE || Pred == ICmpInst::ICMP_ULT ||
Pred == ICmpInst::ICMP_ULE)
- return ReplaceInstUsesWith(I, ConstantInt::getTrue());
- return ReplaceInstUsesWith(I, ConstantInt::getFalse());
+ return ReplaceInstUsesWith(I, Context->getTrue());
+ return ReplaceInstUsesWith(I, Context->getFalse());
}
}
if (SMin.compare(RHS) == APFloat::cmpGreaterThan) { // smin > 12312.0
if (Pred == ICmpInst::ICMP_NE || Pred == ICmpInst::ICMP_SGT ||
Pred == ICmpInst::ICMP_SGE)
- return ReplaceInstUsesWith(I,ConstantInt::getTrue());
- return ReplaceInstUsesWith(I, ConstantInt::getFalse());
+ return ReplaceInstUsesWith(I, Context->getTrue());
+ return ReplaceInstUsesWith(I, Context->getFalse());
}
}
// casting the FP value to the integer value and back, checking for equality.
// Don't do this for zero, because -0.0 is not fractional.
Constant *RHSInt = LHSUnsigned
- ? ConstantExpr::getFPToUI(RHSC, IntTy)
- : ConstantExpr::getFPToSI(RHSC, IntTy);
+ ? Context->getConstantExprFPToUI(RHSC, IntTy)
+ : Context->getConstantExprFPToSI(RHSC, IntTy);
if (!RHS.isZero()) {
bool Equal = LHSUnsigned
- ? ConstantExpr::getUIToFP(RHSInt, RHSC->getType()) == RHSC
- : ConstantExpr::getSIToFP(RHSInt, RHSC->getType()) == RHSC;
+ ? Context->getConstantExprUIToFP(RHSInt, RHSC->getType()) == RHSC
+ : Context->getConstantExprSIToFP(RHSInt, RHSC->getType()) == RHSC;
if (!Equal) {
// If we had a comparison against a fractional value, we have to adjust
// the compare predicate and sometimes the value. RHSC is rounded towards
// zero at this point.
switch (Pred) {
- default: assert(0 && "Unexpected integer comparison!");
+ default: llvm_unreachable("Unexpected integer comparison!");
case ICmpInst::ICMP_NE: // (float)int != 4.4 --> true
- return ReplaceInstUsesWith(I, ConstantInt::getTrue());
+ return ReplaceInstUsesWith(I, Context->getTrue());
case ICmpInst::ICMP_EQ: // (float)int == 4.4 --> false
- return ReplaceInstUsesWith(I, ConstantInt::getFalse());
+ return ReplaceInstUsesWith(I, Context->getFalse());
case ICmpInst::ICMP_ULE:
// (float)int <= 4.4 --> int <= 4
// (float)int <= -4.4 --> false
if (RHS.isNegative())
- return ReplaceInstUsesWith(I, ConstantInt::getFalse());
+ return ReplaceInstUsesWith(I, Context->getFalse());
break;
case ICmpInst::ICMP_SLE:
// (float)int <= 4.4 --> int <= 4
// (float)int < -4.4 --> false
// (float)int < 4.4 --> int <= 4
if (RHS.isNegative())
- return ReplaceInstUsesWith(I, ConstantInt::getFalse());
+ return ReplaceInstUsesWith(I, Context->getFalse());
Pred = ICmpInst::ICMP_ULE;
break;
case ICmpInst::ICMP_SLT:
// (float)int > 4.4 --> int > 4
// (float)int > -4.4 --> true
if (RHS.isNegative())
- return ReplaceInstUsesWith(I, ConstantInt::getTrue());
+ return ReplaceInstUsesWith(I, Context->getTrue());
break;
case ICmpInst::ICMP_SGT:
// (float)int > 4.4 --> int > 4
// (float)int >= -4.4 --> true
// (float)int >= 4.4 --> int > 4
if (!RHS.isNegative())
- return ReplaceInstUsesWith(I, ConstantInt::getTrue());
+ return ReplaceInstUsesWith(I, Context->getTrue());
Pred = ICmpInst::ICMP_UGT;
break;
case ICmpInst::ICMP_SGE:
// Lower this FP comparison into an appropriate integer version of the
// comparison.
- return new ICmpInst(Pred, LHSI->getOperand(0), RHSInt);
+ return new ICmpInst(*Context, Pred, LHSI->getOperand(0), RHSInt);
}
Instruction *InstCombiner::visitFCmpInst(FCmpInst &I) {
// Fold trivial predicates.
if (I.getPredicate() == FCmpInst::FCMP_FALSE)
- return ReplaceInstUsesWith(I, ConstantInt::getFalse());
+ return ReplaceInstUsesWith(I, Context->getFalse());
if (I.getPredicate() == FCmpInst::FCMP_TRUE)
- return ReplaceInstUsesWith(I, ConstantInt::getTrue());
+ return ReplaceInstUsesWith(I, Context->getTrue());
// Simplify 'fcmp pred X, X'
if (Op0 == Op1) {
switch (I.getPredicate()) {
- default: assert(0 && "Unknown predicate!");
+ default: llvm_unreachable("Unknown predicate!");
case FCmpInst::FCMP_UEQ: // True if unordered or equal
case FCmpInst::FCMP_UGE: // True if unordered, greater than, or equal
case FCmpInst::FCMP_ULE: // True if unordered, less than, or equal
- return ReplaceInstUsesWith(I, ConstantInt::getTrue());
+ return ReplaceInstUsesWith(I, Context->getTrue());
case FCmpInst::FCMP_OGT: // True if ordered and greater than
case FCmpInst::FCMP_OLT: // True if ordered and less than
case FCmpInst::FCMP_ONE: // True if ordered and operands are unequal
- return ReplaceInstUsesWith(I, ConstantInt::getFalse());
+ return ReplaceInstUsesWith(I, Context->getFalse());
case FCmpInst::FCMP_UNO: // True if unordered: isnan(X) | isnan(Y)
case FCmpInst::FCMP_ULT: // True if unordered or less than
case FCmpInst::FCMP_UNE: // True if unordered or not equal
// Canonicalize these to be 'fcmp uno %X, 0.0'.
I.setPredicate(FCmpInst::FCMP_UNO);
- I.setOperand(1, Constant::getNullValue(Op0->getType()));
+ I.setOperand(1, Context->getNullValue(Op0->getType()));
return &I;
case FCmpInst::FCMP_ORD: // True if ordered (no nans)
case FCmpInst::FCMP_OLE: // True if ordered and less than or equal
// Canonicalize these to be 'fcmp ord %X, 0.0'.
I.setPredicate(FCmpInst::FCMP_ORD);
- I.setOperand(1, Constant::getNullValue(Op0->getType()));
+ I.setOperand(1, Context->getNullValue(Op0->getType()));
return &I;
}
}
if (isa<UndefValue>(Op1)) // fcmp pred X, undef -> undef
- return ReplaceInstUsesWith(I, UndefValue::get(Type::Int1Ty));
+ return ReplaceInstUsesWith(I, Context->getUndef(Type::Int1Ty));
// Handle fcmp with constant RHS
if (Constant *RHSC = dyn_cast<Constant>(Op1)) {
if (ConstantFP *CFP = dyn_cast<ConstantFP>(RHSC)) {
if (CFP->getValueAPF().isNaN()) {
if (FCmpInst::isOrdered(I.getPredicate())) // True if ordered and...
- return ReplaceInstUsesWith(I, ConstantInt::getFalse());
+ return ReplaceInstUsesWith(I, Context->getFalse());
assert(FCmpInst::isUnordered(I.getPredicate()) &&
"Comparison must be either ordered or unordered!");
// True if unordered.
- return ReplaceInstUsesWith(I, ConstantInt::getTrue());
+ return ReplaceInstUsesWith(I, Context->getTrue());
}
}
if (LHSI->hasOneUse()) {
if (Constant *C = dyn_cast<Constant>(LHSI->getOperand(1))) {
// Fold the known value into the constant operand.
- Op1 = ConstantExpr::getCompare(I.getPredicate(), C, RHSC);
+ Op1 = Context->getConstantExprCompare(I.getPredicate(), C, RHSC);
// Insert a new FCmp of the other select operand.
- Op2 = InsertNewInstBefore(new FCmpInst(I.getPredicate(),
+ Op2 = InsertNewInstBefore(new FCmpInst(*Context, I.getPredicate(),
LHSI->getOperand(2), RHSC,
I.getName()), I);
} else if (Constant *C = dyn_cast<Constant>(LHSI->getOperand(2))) {
// Fold the known value into the constant operand.
- Op2 = ConstantExpr::getCompare(I.getPredicate(), C, RHSC);
+ Op2 = Context->getConstantExprCompare(I.getPredicate(), C, RHSC);
// Insert a new FCmp of the other select operand.
- Op1 = InsertNewInstBefore(new FCmpInst(I.getPredicate(),
+ Op1 = InsertNewInstBefore(new FCmpInst(*Context, I.getPredicate(),
LHSI->getOperand(1), RHSC,
I.getName()), I);
}
I.isTrueWhenEqual()));
if (isa<UndefValue>(Op1)) // X icmp undef -> undef
- return ReplaceInstUsesWith(I, UndefValue::get(Type::Int1Ty));
+ return ReplaceInstUsesWith(I, Context->getUndef(Type::Int1Ty));
// icmp <global/alloca*/null>, <global/alloca*/null> - Global/Stack value
// addresses never equal each other! We already know that Op0 != Op1.
// icmp's with boolean values can always be turned into bitwise operations
if (Ty == Type::Int1Ty) {
switch (I.getPredicate()) {
- default: assert(0 && "Invalid icmp instruction!");
+ default: llvm_unreachable("Invalid icmp instruction!");
case ICmpInst::ICMP_EQ: { // icmp eq i1 A, B -> ~(A^B)
Instruction *Xor = BinaryOperator::CreateXor(Op0, Op1, I.getName()+"tmp");
InsertNewInstBefore(Xor, I);
- return BinaryOperator::CreateNot(Xor);
+ return BinaryOperator::CreateNot(*Context, Xor);
}
case ICmpInst::ICMP_NE: // icmp eq i1 A, B -> A^B
return BinaryOperator::CreateXor(Op0, Op1);
std::swap(Op0, Op1); // Change icmp ugt -> icmp ult
// FALL THROUGH
case ICmpInst::ICMP_ULT:{ // icmp ult i1 A, B -> ~A & B
- Instruction *Not = BinaryOperator::CreateNot(Op0, I.getName()+"tmp");
+ Instruction *Not = BinaryOperator::CreateNot(*Context,
+ Op0, I.getName()+"tmp");
InsertNewInstBefore(Not, I);
return BinaryOperator::CreateAnd(Not, Op1);
}
std::swap(Op0, Op1); // Change icmp sgt -> icmp slt
// FALL THROUGH
case ICmpInst::ICMP_SLT: { // icmp slt i1 A, B -> A & ~B
- Instruction *Not = BinaryOperator::CreateNot(Op1, I.getName()+"tmp");
+ Instruction *Not = BinaryOperator::CreateNot(*Context,
+ Op1, I.getName()+"tmp");
InsertNewInstBefore(Not, I);
return BinaryOperator::CreateAnd(Not, Op0);
}
std::swap(Op0, Op1); // Change icmp uge -> icmp ule
// FALL THROUGH
case ICmpInst::ICMP_ULE: { // icmp ule i1 A, B -> ~A | B
- Instruction *Not = BinaryOperator::CreateNot(Op0, I.getName()+"tmp");
+ Instruction *Not = BinaryOperator::CreateNot(*Context,
+ Op0, I.getName()+"tmp");
InsertNewInstBefore(Not, I);
return BinaryOperator::CreateOr(Not, Op1);
}
std::swap(Op0, Op1); // Change icmp sge -> icmp sle
// FALL THROUGH
case ICmpInst::ICMP_SLE: { // icmp sle i1 A, B -> A | ~B
- Instruction *Not = BinaryOperator::CreateNot(Op1, I.getName()+"tmp");
+ Instruction *Not = BinaryOperator::CreateNot(*Context,
+ Op1, I.getName()+"tmp");
InsertNewInstBefore(Not, I);
return BinaryOperator::CreateOr(Not, Op0);
}
// (icmp ne/eq (sub A B) 0) -> (icmp ne/eq A, B)
if (I.isEquality() && CI->isNullValue() &&
- match(Op0, m_Sub(m_Value(A), m_Value(B)))) {
+ match(Op0, m_Sub(m_Value(A), m_Value(B)), *Context)) {
// (icmp cond A B) if cond is equality
- return new ICmpInst(I.getPredicate(), A, B);
+ return new ICmpInst(*Context, I.getPredicate(), A, B);
}
// If we have an icmp le or icmp ge instruction, turn it into the
default: break;
case ICmpInst::ICMP_ULE:
if (CI->isMaxValue(false)) // A <=u MAX -> TRUE
- return ReplaceInstUsesWith(I, ConstantInt::getTrue());
- return new ICmpInst(ICmpInst::ICMP_ULT, Op0, AddOne(CI));
+ return ReplaceInstUsesWith(I, Context->getTrue());
+ return new ICmpInst(*Context, ICmpInst::ICMP_ULT, Op0,
+ AddOne(CI, Context));
case ICmpInst::ICMP_SLE:
if (CI->isMaxValue(true)) // A <=s MAX -> TRUE
- return ReplaceInstUsesWith(I, ConstantInt::getTrue());
- return new ICmpInst(ICmpInst::ICMP_SLT, Op0, AddOne(CI));
+ return ReplaceInstUsesWith(I, Context->getTrue());
+ return new ICmpInst(*Context, ICmpInst::ICMP_SLT, Op0,
+ AddOne(CI, Context));
case ICmpInst::ICMP_UGE:
if (CI->isMinValue(false)) // A >=u MIN -> TRUE
- return ReplaceInstUsesWith(I, ConstantInt::getTrue());
- return new ICmpInst( ICmpInst::ICMP_UGT, Op0, SubOne(CI));
+ return ReplaceInstUsesWith(I, Context->getTrue());
+ return new ICmpInst(*Context, ICmpInst::ICMP_UGT, Op0,
+ SubOne(CI, Context));
case ICmpInst::ICMP_SGE:
if (CI->isMinValue(true)) // A >=s MIN -> TRUE
- return ReplaceInstUsesWith(I, ConstantInt::getTrue());
- return new ICmpInst(ICmpInst::ICMP_SGT, Op0, SubOne(CI));
+ return ReplaceInstUsesWith(I, Context->getTrue());
+ return new ICmpInst(*Context, ICmpInst::ICMP_SGT, Op0,
+ SubOne(CI, Context));
}
// If this comparison is a normal comparison, it demands all
// figured out that the LHS is a constant. Just constant fold this now so
// that code below can assume that Min != Max.
if (!isa<Constant>(Op0) && Op0Min == Op0Max)
- return new ICmpInst(I.getPredicate(), ConstantInt::get(Op0Min), Op1);
+ return new ICmpInst(*Context, I.getPredicate(),
+ ConstantInt::get(*Context, Op0Min), Op1);
if (!isa<Constant>(Op1) && Op1Min == Op1Max)
- return new ICmpInst(I.getPredicate(), Op0, ConstantInt::get(Op1Min));
+ return new ICmpInst(*Context, I.getPredicate(), Op0,
+ ConstantInt::get(*Context, Op1Min));
// Based on the range information we know about the LHS, see if we can
// simplify this comparison. For example, (x&4) < 8 is always true.
switch (I.getPredicate()) {
- default: assert(0 && "Unknown icmp opcode!");
+ default: llvm_unreachable("Unknown icmp opcode!");
case ICmpInst::ICMP_EQ:
if (Op0Max.ult(Op1Min) || Op0Min.ugt(Op1Max))
- return ReplaceInstUsesWith(I, ConstantInt::getFalse());
+ return ReplaceInstUsesWith(I, Context->getFalse());
break;
case ICmpInst::ICMP_NE:
if (Op0Max.ult(Op1Min) || Op0Min.ugt(Op1Max))
- return ReplaceInstUsesWith(I, ConstantInt::getTrue());
+ return ReplaceInstUsesWith(I, Context->getTrue());
break;
case ICmpInst::ICMP_ULT:
if (Op0Max.ult(Op1Min)) // A <u B -> true if max(A) < min(B)
- return ReplaceInstUsesWith(I, ConstantInt::getTrue());
+ return ReplaceInstUsesWith(I, Context->getTrue());
if (Op0Min.uge(Op1Max)) // A <u B -> false if min(A) >= max(B)
- return ReplaceInstUsesWith(I, ConstantInt::getFalse());
+ return ReplaceInstUsesWith(I, Context->getFalse());
if (Op1Min == Op0Max) // A <u B -> A != B if max(A) == min(B)
- return new ICmpInst(ICmpInst::ICMP_NE, Op0, Op1);
+ return new ICmpInst(*Context, ICmpInst::ICMP_NE, Op0, Op1);
if (ConstantInt *CI = dyn_cast<ConstantInt>(Op1)) {
if (Op1Max == Op0Min+1) // A <u C -> A == C-1 if min(A)+1 == C
- return new ICmpInst(ICmpInst::ICMP_EQ, Op0, SubOne(CI));
+ return new ICmpInst(*Context, ICmpInst::ICMP_EQ, Op0,
+ SubOne(CI, Context));
// (x <u 2147483648) -> (x >s -1) -> true if sign bit clear
if (CI->isMinValue(true))
- return new ICmpInst(ICmpInst::ICMP_SGT, Op0,
- ConstantInt::getAllOnesValue(Op0->getType()));
+ return new ICmpInst(*Context, ICmpInst::ICMP_SGT, Op0,
+ Context->getAllOnesValue(Op0->getType()));
}
break;
case ICmpInst::ICMP_UGT:
if (Op0Min.ugt(Op1Max)) // A >u B -> true if min(A) > max(B)
- return ReplaceInstUsesWith(I, ConstantInt::getTrue());
+ return ReplaceInstUsesWith(I, Context->getTrue());
if (Op0Max.ule(Op1Min)) // A >u B -> false if max(A) <= max(B)
- return ReplaceInstUsesWith(I, ConstantInt::getFalse());
+ return ReplaceInstUsesWith(I, Context->getFalse());
if (Op1Max == Op0Min) // A >u B -> A != B if min(A) == max(B)
- return new ICmpInst(ICmpInst::ICMP_NE, Op0, Op1);
+ return new ICmpInst(*Context, ICmpInst::ICMP_NE, Op0, Op1);
if (ConstantInt *CI = dyn_cast<ConstantInt>(Op1)) {
if (Op1Min == Op0Max-1) // A >u C -> A == C+1 if max(a)-1 == C
- return new ICmpInst(ICmpInst::ICMP_EQ, Op0, AddOne(CI));
+ return new ICmpInst(*Context, ICmpInst::ICMP_EQ, Op0,
+ AddOne(CI, Context));
// (x >u 2147483647) -> (x <s 0) -> true if sign bit set
if (CI->isMaxValue(true))
- return new ICmpInst(ICmpInst::ICMP_SLT, Op0,
- ConstantInt::getNullValue(Op0->getType()));
+ return new ICmpInst(*Context, ICmpInst::ICMP_SLT, Op0,
+ Context->getNullValue(Op0->getType()));
}
break;
case ICmpInst::ICMP_SLT:
if (Op0Max.slt(Op1Min)) // A <s B -> true if max(A) < min(C)
- return ReplaceInstUsesWith(I, ConstantInt::getTrue());
+ return ReplaceInstUsesWith(I, Context->getTrue());
if (Op0Min.sge(Op1Max)) // A <s B -> false if min(A) >= max(C)
- return ReplaceInstUsesWith(I, ConstantInt::getFalse());
+ return ReplaceInstUsesWith(I, Context->getFalse());
if (Op1Min == Op0Max) // A <s B -> A != B if max(A) == min(B)
- return new ICmpInst(ICmpInst::ICMP_NE, Op0, Op1);
+ return new ICmpInst(*Context, ICmpInst::ICMP_NE, Op0, Op1);
if (ConstantInt *CI = dyn_cast<ConstantInt>(Op1)) {
if (Op1Max == Op0Min+1) // A <s C -> A == C-1 if min(A)+1 == C
- return new ICmpInst(ICmpInst::ICMP_EQ, Op0, SubOne(CI));
+ return new ICmpInst(*Context, ICmpInst::ICMP_EQ, Op0,
+ SubOne(CI, Context));
}
break;
case ICmpInst::ICMP_SGT:
if (Op0Min.sgt(Op1Max)) // A >s B -> true if min(A) > max(B)
- return ReplaceInstUsesWith(I, ConstantInt::getTrue());
+ return ReplaceInstUsesWith(I, Context->getTrue());
if (Op0Max.sle(Op1Min)) // A >s B -> false if max(A) <= min(B)
- return ReplaceInstUsesWith(I, ConstantInt::getFalse());
+ return ReplaceInstUsesWith(I, Context->getFalse());
if (Op1Max == Op0Min) // A >s B -> A != B if min(A) == max(B)
- return new ICmpInst(ICmpInst::ICMP_NE, Op0, Op1);
+ return new ICmpInst(*Context, ICmpInst::ICMP_NE, Op0, Op1);
if (ConstantInt *CI = dyn_cast<ConstantInt>(Op1)) {
if (Op1Min == Op0Max-1) // A >s C -> A == C+1 if max(A)-1 == C
- return new ICmpInst(ICmpInst::ICMP_EQ, Op0, AddOne(CI));
+ return new ICmpInst(*Context, ICmpInst::ICMP_EQ, Op0,
+ AddOne(CI, Context));
}
break;
case ICmpInst::ICMP_SGE:
assert(!isa<ConstantInt>(Op1) && "ICMP_SGE with ConstantInt not folded!");
if (Op0Min.sge(Op1Max)) // A >=s B -> true if min(A) >= max(B)
- return ReplaceInstUsesWith(I, ConstantInt::getTrue());
+ return ReplaceInstUsesWith(I, Context->getTrue());
if (Op0Max.slt(Op1Min)) // A >=s B -> false if max(A) < min(B)
- return ReplaceInstUsesWith(I, ConstantInt::getFalse());
+ return ReplaceInstUsesWith(I, Context->getFalse());
break;
case ICmpInst::ICMP_SLE:
assert(!isa<ConstantInt>(Op1) && "ICMP_SLE with ConstantInt not folded!");
if (Op0Max.sle(Op1Min)) // A <=s B -> true if max(A) <= min(B)
- return ReplaceInstUsesWith(I, ConstantInt::getTrue());
+ return ReplaceInstUsesWith(I, Context->getTrue());
if (Op0Min.sgt(Op1Max)) // A <=s B -> false if min(A) > max(B)
- return ReplaceInstUsesWith(I, ConstantInt::getFalse());
+ return ReplaceInstUsesWith(I, Context->getFalse());
break;
case ICmpInst::ICMP_UGE:
assert(!isa<ConstantInt>(Op1) && "ICMP_UGE with ConstantInt not folded!");
if (Op0Min.uge(Op1Max)) // A >=u B -> true if min(A) >= max(B)
- return ReplaceInstUsesWith(I, ConstantInt::getTrue());
+ return ReplaceInstUsesWith(I, Context->getTrue());
if (Op0Max.ult(Op1Min)) // A >=u B -> false if max(A) < min(B)
- return ReplaceInstUsesWith(I, ConstantInt::getFalse());
+ return ReplaceInstUsesWith(I, Context->getFalse());
break;
case ICmpInst::ICMP_ULE:
assert(!isa<ConstantInt>(Op1) && "ICMP_ULE with ConstantInt not folded!");
if (Op0Max.ule(Op1Min)) // A <=u B -> true if max(A) <= min(B)
- return ReplaceInstUsesWith(I, ConstantInt::getTrue());
+ return ReplaceInstUsesWith(I, Context->getTrue());
if (Op0Min.ugt(Op1Max)) // A <=u B -> false if min(A) > max(B)
- return ReplaceInstUsesWith(I, ConstantInt::getFalse());
+ return ReplaceInstUsesWith(I, Context->getFalse());
break;
}
if (I.isSignedPredicate() &&
((Op0KnownZero.isNegative() && Op1KnownZero.isNegative()) ||
(Op0KnownOne.isNegative() && Op1KnownOne.isNegative())))
- return new ICmpInst(I.getUnsignedPredicate(), Op0, Op1);
+ return new ICmpInst(*Context, I.getUnsignedPredicate(), Op0, Op1);
}
// Test if the ICmpInst instruction is used exclusively by a select as
break;
}
if (isAllZeros)
- return new ICmpInst(I.getPredicate(), LHSI->getOperand(0),
- Constant::getNullValue(LHSI->getOperand(0)->getType()));
+ return new ICmpInst(*Context, I.getPredicate(), LHSI->getOperand(0),
+ Context->getNullValue(LHSI->getOperand(0)->getType()));
}
break;
if (LHSI->hasOneUse()) {
if (Constant *C = dyn_cast<Constant>(LHSI->getOperand(1))) {
// Fold the known value into the constant operand.
- Op1 = ConstantExpr::getICmp(I.getPredicate(), C, RHSC);
+ Op1 = Context->getConstantExprICmp(I.getPredicate(), C, RHSC);
// Insert a new ICmp of the other select operand.
- Op2 = InsertNewInstBefore(new ICmpInst(I.getPredicate(),
+ Op2 = InsertNewInstBefore(new ICmpInst(*Context, I.getPredicate(),
LHSI->getOperand(2), RHSC,
I.getName()), I);
} else if (Constant *C = dyn_cast<Constant>(LHSI->getOperand(2))) {
// Fold the known value into the constant operand.
- Op2 = ConstantExpr::getICmp(I.getPredicate(), C, RHSC);
+ Op2 = Context->getConstantExprICmp(I.getPredicate(), C, RHSC);
// Insert a new ICmp of the other select operand.
- Op1 = InsertNewInstBefore(new ICmpInst(I.getPredicate(),
+ Op1 = InsertNewInstBefore(new ICmpInst(*Context, I.getPredicate(),
LHSI->getOperand(1), RHSC,
I.getName()), I);
}
// If Op1 is a constant, we can fold the cast into the constant.
if (Op0->getType() != Op1->getType()) {
if (Constant *Op1C = dyn_cast<Constant>(Op1)) {
- Op1 = ConstantExpr::getBitCast(Op1C, Op0->getType());
+ Op1 = Context->getConstantExprBitCast(Op1C, Op0->getType());
} else {
// Otherwise, cast the RHS right before the icmp
Op1 = InsertBitCastBefore(Op1, Op0->getType(), I);
}
}
- return new ICmpInst(I.getPredicate(), Op0, Op1);
+ return new ICmpInst(*Context, I.getPredicate(), Op0, Op1);
}
}
case Instruction::Sub:
case Instruction::Xor:
if (I.isEquality()) // a+x icmp eq/ne b+x --> a icmp b
- return new ICmpInst(I.getPredicate(), Op0I->getOperand(0),
+ return new ICmpInst(*Context, I.getPredicate(), Op0I->getOperand(0),
Op1I->getOperand(0));
// icmp u/s (a ^ signbit), (b ^ signbit) --> icmp s/u a, b
if (ConstantInt *CI = dyn_cast<ConstantInt>(Op0I->getOperand(1))) {
ICmpInst::Predicate Pred = I.isSignedPredicate()
? I.getUnsignedPredicate()
: I.getSignedPredicate();
- return new ICmpInst(Pred, Op0I->getOperand(0),
+ return new ICmpInst(*Context, Pred, Op0I->getOperand(0),
Op1I->getOperand(0));
}
? I.getUnsignedPredicate()
: I.getSignedPredicate();
Pred = I.getSwappedPredicate(Pred);
- return new ICmpInst(Pred, Op0I->getOperand(0),
+ return new ICmpInst(*Context, Pred, Op0I->getOperand(0),
Op1I->getOperand(0));
}
}
// Mask = -1 >> count-trailing-zeros(Cst).
if (!CI->isZero() && !CI->isOne()) {
const APInt &AP = CI->getValue();
- ConstantInt *Mask = ConstantInt::get(
+ ConstantInt *Mask = ConstantInt::get(*Context,
APInt::getLowBitsSet(AP.getBitWidth(),
AP.getBitWidth() -
AP.countTrailingZeros()));
Mask);
InsertNewInstBefore(And1, I);
InsertNewInstBefore(And2, I);
- return new ICmpInst(I.getPredicate(), And1, And2);
+ return new ICmpInst(*Context, I.getPredicate(), And1, And2);
}
}
break;
// ~x < ~y --> y < x
{ Value *A, *B;
- if (match(Op0, m_Not(m_Value(A))) &&
- match(Op1, m_Not(m_Value(B))))
- return new ICmpInst(I.getPredicate(), B, A);
+ if (match(Op0, m_Not(m_Value(A)), *Context) &&
+ match(Op1, m_Not(m_Value(B)), *Context))
+ return new ICmpInst(*Context, I.getPredicate(), B, A);
}
if (I.isEquality()) {
Value *A, *B, *C, *D;
// -x == -y --> x == y
- if (match(Op0, m_Neg(m_Value(A))) &&
- match(Op1, m_Neg(m_Value(B))))
- return new ICmpInst(I.getPredicate(), A, B);
+ if (match(Op0, m_Neg(m_Value(A)), *Context) &&
+ match(Op1, m_Neg(m_Value(B)), *Context))
+ return new ICmpInst(*Context, I.getPredicate(), A, B);
- if (match(Op0, m_Xor(m_Value(A), m_Value(B)))) {
+ if (match(Op0, m_Xor(m_Value(A), m_Value(B)), *Context)) {
if (A == Op1 || B == Op1) { // (A^B) == A -> B == 0
Value *OtherVal = A == Op1 ? B : A;
- return new ICmpInst(I.getPredicate(), OtherVal,
- Constant::getNullValue(A->getType()));
+ return new ICmpInst(*Context, I.getPredicate(), OtherVal,
+ Context->getNullValue(A->getType()));
}
- if (match(Op1, m_Xor(m_Value(C), m_Value(D)))) {
+ if (match(Op1, m_Xor(m_Value(C), m_Value(D)), *Context)) {
// A^c1 == C^c2 --> A == C^(c1^c2)
ConstantInt *C1, *C2;
- if (match(B, m_ConstantInt(C1)) &&
- match(D, m_ConstantInt(C2)) && Op1->hasOneUse()) {
- Constant *NC = ConstantInt::get(C1->getValue() ^ C2->getValue());
+ if (match(B, m_ConstantInt(C1), *Context) &&
+ match(D, m_ConstantInt(C2), *Context) && Op1->hasOneUse()) {
+ Constant *NC =
+ ConstantInt::get(*Context, C1->getValue() ^ C2->getValue());
Instruction *Xor = BinaryOperator::CreateXor(C, NC, "tmp");
- return new ICmpInst(I.getPredicate(), A,
+ return new ICmpInst(*Context, I.getPredicate(), A,
InsertNewInstBefore(Xor, I));
}
// A^B == A^D -> B == D
- if (A == C) return new ICmpInst(I.getPredicate(), B, D);
- if (A == D) return new ICmpInst(I.getPredicate(), B, C);
- if (B == C) return new ICmpInst(I.getPredicate(), A, D);
- if (B == D) return new ICmpInst(I.getPredicate(), A, C);
+ if (A == C) return new ICmpInst(*Context, I.getPredicate(), B, D);
+ if (A == D) return new ICmpInst(*Context, I.getPredicate(), B, C);
+ if (B == C) return new ICmpInst(*Context, I.getPredicate(), A, D);
+ if (B == D) return new ICmpInst(*Context, I.getPredicate(), A, C);
}
}
- if (match(Op1, m_Xor(m_Value(A), m_Value(B))) &&
+ if (match(Op1, m_Xor(m_Value(A), m_Value(B)), *Context) &&
(A == Op0 || B == Op0)) {
// A == (A^B) -> B == 0
Value *OtherVal = A == Op0 ? B : A;
- return new ICmpInst(I.getPredicate(), OtherVal,
- Constant::getNullValue(A->getType()));
+ return new ICmpInst(*Context, I.getPredicate(), OtherVal,
+ Context->getNullValue(A->getType()));
}
// (A-B) == A -> B == 0
- if (match(Op0, m_Sub(m_Specific(Op1), m_Value(B))))
- return new ICmpInst(I.getPredicate(), B,
- Constant::getNullValue(B->getType()));
+ if (match(Op0, m_Sub(m_Specific(Op1), m_Value(B)), *Context))
+ return new ICmpInst(*Context, I.getPredicate(), B,
+ Context->getNullValue(B->getType()));
// A == (A-B) -> B == 0
- if (match(Op1, m_Sub(m_Specific(Op0), m_Value(B))))
- return new ICmpInst(I.getPredicate(), B,
- Constant::getNullValue(B->getType()));
+ if (match(Op1, m_Sub(m_Specific(Op0), m_Value(B)), *Context))
+ return new ICmpInst(*Context, I.getPredicate(), B,
+ Context->getNullValue(B->getType()));
// (X&Z) == (Y&Z) -> (X^Y) & Z == 0
if (Op0->hasOneUse() && Op1->hasOneUse() &&
- match(Op0, m_And(m_Value(A), m_Value(B))) &&
- match(Op1, m_And(m_Value(C), m_Value(D)))) {
+ match(Op0, m_And(m_Value(A), m_Value(B)), *Context) &&
+ match(Op1, m_And(m_Value(C), m_Value(D)), *Context)) {
Value *X = 0, *Y = 0, *Z = 0;
if (A == C) {
Op1 = InsertNewInstBefore(BinaryOperator::CreateXor(X, Y, "tmp"), I);
Op1 = InsertNewInstBefore(BinaryOperator::CreateAnd(Op1, Z, "tmp"), I);
I.setOperand(0, Op1);
- I.setOperand(1, Constant::getNullValue(Op1->getType()));
+ I.setOperand(1, Context->getNullValue(Op1->getType()));
return &I;
}
}
// of form X/C1=C2. We solve for X by multiplying C1 (DivRHS) and
// C2 (CI). By solving for X we can turn this into a range check
// instead of computing a divide.
- Constant *Prod = ConstantExpr::getMul(CmpRHS, DivRHS);
+ Constant *Prod = Context->getConstantExprMul(CmpRHS, DivRHS);
// Determine if the product overflows by seeing if the product is
// not equal to the divide. Make sure we do the same kind of divide
// as in the LHS instruction that we're folding.
- bool ProdOV = (DivIsSigned ? ConstantExpr::getSDiv(Prod, DivRHS) :
- ConstantExpr::getUDiv(Prod, DivRHS)) != CmpRHS;
+ bool ProdOV = (DivIsSigned ? Context->getConstantExprSDiv(Prod, DivRHS) :
+ Context->getConstantExprUDiv(Prod, DivRHS)) != CmpRHS;
// Get the ICmp opcode
ICmpInst::Predicate Pred = ICI.getPredicate();
LoBound = Prod;
HiOverflow = LoOverflow = ProdOV;
if (!HiOverflow)
- HiOverflow = AddWithOverflow(HiBound, LoBound, DivRHS, false);
+ HiOverflow = AddWithOverflow(HiBound, LoBound, DivRHS, Context, false);
} else if (DivRHS->getValue().isStrictlyPositive()) { // Divisor is > 0.
if (CmpRHSV == 0) { // (X / pos) op 0
// Can't overflow. e.g. X/2 op 0 --> [-1, 2)
- LoBound = cast<ConstantInt>(ConstantExpr::getNeg(SubOne(DivRHS)));
+ LoBound = cast<ConstantInt>(Context->getConstantExprNeg(SubOne(DivRHS,
+ Context)));
HiBound = DivRHS;
} else if (CmpRHSV.isStrictlyPositive()) { // (X / pos) op pos
LoBound = Prod; // e.g. X/5 op 3 --> [15, 20)
HiOverflow = LoOverflow = ProdOV;
if (!HiOverflow)
- HiOverflow = AddWithOverflow(HiBound, Prod, DivRHS, true);
+ HiOverflow = AddWithOverflow(HiBound, Prod, DivRHS, Context, true);
} else { // (X / pos) op neg
// e.g. X/5 op -3 --> [-15-4, -15+1) --> [-19, -14)
- HiBound = AddOne(Prod);
+ HiBound = AddOne(Prod, Context);
LoOverflow = HiOverflow = ProdOV ? -1 : 0;
if (!LoOverflow) {
- ConstantInt* DivNeg = cast<ConstantInt>(ConstantExpr::getNeg(DivRHS));
- LoOverflow = AddWithOverflow(LoBound, HiBound, DivNeg,
+ ConstantInt* DivNeg =
+ cast<ConstantInt>(Context->getConstantExprNeg(DivRHS));
+ LoOverflow = AddWithOverflow(LoBound, HiBound, DivNeg, Context,
true) ? -1 : 0;
}
}
} else if (DivRHS->getValue().isNegative()) { // Divisor is < 0.
if (CmpRHSV == 0) { // (X / neg) op 0
// e.g. X/-5 op 0 --> [-4, 5)
- LoBound = AddOne(DivRHS);
- HiBound = cast<ConstantInt>(ConstantExpr::getNeg(DivRHS));
+ LoBound = AddOne(DivRHS, Context);
+ HiBound = cast<ConstantInt>(Context->getConstantExprNeg(DivRHS));
if (HiBound == DivRHS) { // -INTMIN = INTMIN
HiOverflow = 1; // [INTMIN+1, overflow)
HiBound = 0; // e.g. X/INTMIN = 0 --> X > INTMIN
}
} else if (CmpRHSV.isStrictlyPositive()) { // (X / neg) op pos
// e.g. X/-5 op 3 --> [-19, -14)
- HiBound = AddOne(Prod);
+ HiBound = AddOne(Prod, Context);
HiOverflow = LoOverflow = ProdOV ? -1 : 0;
if (!LoOverflow)
- LoOverflow = AddWithOverflow(LoBound, HiBound, DivRHS, true) ? -1 : 0;
+ LoOverflow = AddWithOverflow(LoBound, HiBound,
+ DivRHS, Context, true) ? -1 : 0;
} else { // (X / neg) op neg
LoBound = Prod; // e.g. X/-5 op -3 --> [15, 20)
LoOverflow = HiOverflow = ProdOV;
if (!HiOverflow)
- HiOverflow = SubWithOverflow(HiBound, Prod, DivRHS, true);
+ HiOverflow = SubWithOverflow(HiBound, Prod, DivRHS, Context, true);
}
// Dividing by a negative swaps the condition. LT <-> GT
Value *X = DivI->getOperand(0);
switch (Pred) {
- default: assert(0 && "Unhandled icmp opcode!");
+ default: llvm_unreachable("Unhandled icmp opcode!");
case ICmpInst::ICMP_EQ:
if (LoOverflow && HiOverflow)
- return ReplaceInstUsesWith(ICI, ConstantInt::getFalse());
+ return ReplaceInstUsesWith(ICI, Context->getFalse());
else if (HiOverflow)
- return new ICmpInst(DivIsSigned ? ICmpInst::ICMP_SGE :
+ return new ICmpInst(*Context, DivIsSigned ? ICmpInst::ICMP_SGE :
ICmpInst::ICMP_UGE, X, LoBound);
else if (LoOverflow)
- return new ICmpInst(DivIsSigned ? ICmpInst::ICMP_SLT :
+ return new ICmpInst(*Context, DivIsSigned ? ICmpInst::ICMP_SLT :
ICmpInst::ICMP_ULT, X, HiBound);
else
return InsertRangeTest(X, LoBound, HiBound, DivIsSigned, true, ICI);
case ICmpInst::ICMP_NE:
if (LoOverflow && HiOverflow)
- return ReplaceInstUsesWith(ICI, ConstantInt::getTrue());
+ return ReplaceInstUsesWith(ICI, Context->getTrue());
else if (HiOverflow)
- return new ICmpInst(DivIsSigned ? ICmpInst::ICMP_SLT :
+ return new ICmpInst(*Context, DivIsSigned ? ICmpInst::ICMP_SLT :
ICmpInst::ICMP_ULT, X, LoBound);
else if (LoOverflow)
- return new ICmpInst(DivIsSigned ? ICmpInst::ICMP_SGE :
+ return new ICmpInst(*Context, DivIsSigned ? ICmpInst::ICMP_SGE :
ICmpInst::ICMP_UGE, X, HiBound);
else
return InsertRangeTest(X, LoBound, HiBound, DivIsSigned, false, ICI);
case ICmpInst::ICMP_ULT:
case ICmpInst::ICMP_SLT:
if (LoOverflow == +1) // Low bound is greater than input range.
- return ReplaceInstUsesWith(ICI, ConstantInt::getTrue());
+ return ReplaceInstUsesWith(ICI, Context->getTrue());
if (LoOverflow == -1) // Low bound is less than input range.
- return ReplaceInstUsesWith(ICI, ConstantInt::getFalse());
- return new ICmpInst(Pred, X, LoBound);
+ return ReplaceInstUsesWith(ICI, Context->getFalse());
+ return new ICmpInst(*Context, Pred, X, LoBound);
case ICmpInst::ICMP_UGT:
case ICmpInst::ICMP_SGT:
if (HiOverflow == +1) // High bound greater than input range.
- return ReplaceInstUsesWith(ICI, ConstantInt::getFalse());
+ return ReplaceInstUsesWith(ICI, Context->getFalse());
else if (HiOverflow == -1) // High bound less than input range.
- return ReplaceInstUsesWith(ICI, ConstantInt::getTrue());
+ return ReplaceInstUsesWith(ICI, Context->getTrue());
if (Pred == ICmpInst::ICMP_UGT)
- return new ICmpInst(ICmpInst::ICMP_UGE, X, HiBound);
+ return new ICmpInst(*Context, ICmpInst::ICMP_UGE, X, HiBound);
else
- return new ICmpInst(ICmpInst::ICMP_SGE, X, HiBound);
+ return new ICmpInst(*Context, ICmpInst::ICMP_SGE, X, HiBound);
}
}
APInt NewRHS(RHS->getValue());
NewRHS.zext(SrcBits);
NewRHS |= KnownOne;
- return new ICmpInst(ICI.getPredicate(), LHSI->getOperand(0),
- ConstantInt::get(NewRHS));
+ return new ICmpInst(*Context, ICI.getPredicate(), LHSI->getOperand(0),
+ ConstantInt::get(*Context, NewRHS));
}
}
break;
isTrueIfPositive ^= true;
if (isTrueIfPositive)
- return new ICmpInst(ICmpInst::ICMP_SGT, CompareVal, SubOne(RHS));
+ return new ICmpInst(*Context, ICmpInst::ICMP_SGT, CompareVal,
+ SubOne(RHS, Context));
else
- return new ICmpInst(ICmpInst::ICMP_SLT, CompareVal, AddOne(RHS));
+ return new ICmpInst(*Context, ICmpInst::ICMP_SLT, CompareVal,
+ AddOne(RHS, Context));
}
if (LHSI->hasOneUse()) {
ICmpInst::Predicate Pred = ICI.isSignedPredicate()
? ICI.getUnsignedPredicate()
: ICI.getSignedPredicate();
- return new ICmpInst(Pred, LHSI->getOperand(0),
- ConstantInt::get(RHSV ^ SignBit));
+ return new ICmpInst(*Context, Pred, LHSI->getOperand(0),
+ ConstantInt::get(*Context, RHSV ^ SignBit));
}
// (icmp u/s (xor A ~SignBit), C) -> (icmp s/u (xor C ~SignBit), A)
? ICI.getUnsignedPredicate()
: ICI.getSignedPredicate();
Pred = ICI.getSwappedPredicate(Pred);
- return new ICmpInst(Pred, LHSI->getOperand(0),
- ConstantInt::get(RHSV ^ NotSignBit));
+ return new ICmpInst(*Context, Pred, LHSI->getOperand(0),
+ ConstantInt::get(*Context, RHSV ^ NotSignBit));
}
}
}
NewCI.zext(BitWidth);
Instruction *NewAnd =
BinaryOperator::CreateAnd(Cast->getOperand(0),
- ConstantInt::get(NewCST),LHSI->getName());
+ ConstantInt::get(*Context, NewCST), LHSI->getName());
InsertNewInstBefore(NewAnd, ICI);
- return new ICmpInst(ICI.getPredicate(), NewAnd,
- ConstantInt::get(NewCI));
+ return new ICmpInst(*Context, ICI.getPredicate(), NewAnd,
+ ConstantInt::get(*Context, NewCI));
}
}
if (CanFold) {
Constant *NewCst;
if (Shift->getOpcode() == Instruction::Shl)
- NewCst = ConstantExpr::getLShr(RHS, ShAmt);
+ NewCst = Context->getConstantExprLShr(RHS, ShAmt);
else
- NewCst = ConstantExpr::getShl(RHS, ShAmt);
+ NewCst = Context->getConstantExprShl(RHS, ShAmt);
// Check to see if we are shifting out any of the bits being
// compared.
- if (ConstantExpr::get(Shift->getOpcode(), NewCst, ShAmt) != RHS) {
+ if (Context->getConstantExpr(Shift->getOpcode(),
+ NewCst, ShAmt) != RHS) {
// If we shifted bits out, the fold is not going to work out.
// As a special case, check to see if this means that the
// result is always true or false now.
if (ICI.getPredicate() == ICmpInst::ICMP_EQ)
- return ReplaceInstUsesWith(ICI, ConstantInt::getFalse());
+ return ReplaceInstUsesWith(ICI, Context->getFalse());
if (ICI.getPredicate() == ICmpInst::ICMP_NE)
- return ReplaceInstUsesWith(ICI, ConstantInt::getTrue());
+ return ReplaceInstUsesWith(ICI, Context->getTrue());
} else {
ICI.setOperand(1, NewCst);
Constant *NewAndCST;
if (Shift->getOpcode() == Instruction::Shl)
- NewAndCST = ConstantExpr::getLShr(AndCST, ShAmt);
+ NewAndCST = Context->getConstantExprLShr(AndCST, ShAmt);
else
- NewAndCST = ConstantExpr::getShl(AndCST, ShAmt);
+ NewAndCST = Context->getConstantExprShl(AndCST, ShAmt);
LHSI->setOperand(1, NewAndCST);
LHSI->setOperand(0, Shift->getOperand(0));
AddToWorkList(Shift); // Shift is dead.
// If we are comparing against bits always shifted out, the
// comparison cannot succeed.
Constant *Comp =
- ConstantExpr::getShl(ConstantExpr::getLShr(RHS, ShAmt), ShAmt);
+ Context->getConstantExprShl(Context->getConstantExprLShr(RHS, ShAmt),
+ ShAmt);
if (Comp != RHS) {// Comparing against a bit that we know is zero.
bool IsICMP_NE = ICI.getPredicate() == ICmpInst::ICMP_NE;
Constant *Cst = ConstantInt::get(Type::Int1Ty, IsICMP_NE);
// Otherwise strength reduce the shift into an and.
uint32_t ShAmtVal = (uint32_t)ShAmt->getLimitedValue(TypeBits);
Constant *Mask =
- ConstantInt::get(APInt::getLowBitsSet(TypeBits, TypeBits-ShAmtVal));
+ ConstantInt::get(*Context, APInt::getLowBitsSet(TypeBits,
+ TypeBits-ShAmtVal));
Instruction *AndI =
BinaryOperator::CreateAnd(LHSI->getOperand(0),
Mask, LHSI->getName()+".mask");
Value *And = InsertNewInstBefore(AndI, ICI);
- return new ICmpInst(ICI.getPredicate(), And,
- ConstantInt::get(RHSV.lshr(ShAmtVal)));
+ return new ICmpInst(*Context, ICI.getPredicate(), And,
+ ConstantInt::get(*Context, RHSV.lshr(ShAmtVal)));
}
}
if (LHSI->hasOneUse() &&
isSignBitCheck(ICI.getPredicate(), RHS, TrueIfSigned)) {
// (X << 31) <s 0 --> (X&1) != 0
- Constant *Mask = ConstantInt::get(APInt(TypeBits, 1) <<
+ Constant *Mask = ConstantInt::get(*Context, APInt(TypeBits, 1) <<
(TypeBits-ShAmt->getZExtValue()-1));
Instruction *AndI =
BinaryOperator::CreateAnd(LHSI->getOperand(0),
Mask, LHSI->getName()+".mask");
Value *And = InsertNewInstBefore(AndI, ICI);
- return new ICmpInst(TrueIfSigned ? ICmpInst::ICMP_NE : ICmpInst::ICMP_EQ,
- And, Constant::getNullValue(And->getType()));
+ return new ICmpInst(*Context,
+ TrueIfSigned ? ICmpInst::ICMP_NE : ICmpInst::ICMP_EQ,
+ And, Context->getNullValue(And->getType()));
}
break;
}
if (LHSI->hasOneUse() &&
MaskedValueIsZero(LHSI->getOperand(0),
APInt::getLowBitsSet(Comp.getBitWidth(), ShAmtVal))) {
- return new ICmpInst(ICI.getPredicate(), LHSI->getOperand(0),
- ConstantExpr::getShl(RHS, ShAmt));
+ return new ICmpInst(*Context, ICI.getPredicate(), LHSI->getOperand(0),
+ Context->getConstantExprShl(RHS, ShAmt));
}
if (LHSI->hasOneUse()) {
// Otherwise strength reduce the shift into an and.
APInt Val(APInt::getHighBitsSet(TypeBits, TypeBits - ShAmtVal));
- Constant *Mask = ConstantInt::get(Val);
+ Constant *Mask = ConstantInt::get(*Context, Val);
Instruction *AndI =
BinaryOperator::CreateAnd(LHSI->getOperand(0),
Mask, LHSI->getName()+".mask");
Value *And = InsertNewInstBefore(AndI, ICI);
- return new ICmpInst(ICI.getPredicate(), And,
- ConstantExpr::getShl(RHS, ShAmt));
+ return new ICmpInst(*Context, ICI.getPredicate(), And,
+ Context->getConstantExprShl(RHS, ShAmt));
}
break;
}
if (ICI.isSignedPredicate()) {
if (CR.getLower().isSignBit()) {
- return new ICmpInst(ICmpInst::ICMP_SLT, LHSI->getOperand(0),
- ConstantInt::get(CR.getUpper()));
+ return new ICmpInst(*Context, ICmpInst::ICMP_SLT, LHSI->getOperand(0),
+ ConstantInt::get(*Context, CR.getUpper()));
} else if (CR.getUpper().isSignBit()) {
- return new ICmpInst(ICmpInst::ICMP_SGE, LHSI->getOperand(0),
- ConstantInt::get(CR.getLower()));
+ return new ICmpInst(*Context, ICmpInst::ICMP_SGE, LHSI->getOperand(0),
+ ConstantInt::get(*Context, CR.getLower()));
}
} else {
if (CR.getLower().isMinValue()) {
- return new ICmpInst(ICmpInst::ICMP_ULT, LHSI->getOperand(0),
- ConstantInt::get(CR.getUpper()));
+ return new ICmpInst(*Context, ICmpInst::ICMP_ULT, LHSI->getOperand(0),
+ ConstantInt::get(*Context, CR.getUpper()));
} else if (CR.getUpper().isMinValue()) {
- return new ICmpInst(ICmpInst::ICMP_UGE, LHSI->getOperand(0),
- ConstantInt::get(CR.getLower()));
+ return new ICmpInst(*Context, ICmpInst::ICMP_UGE, LHSI->getOperand(0),
+ ConstantInt::get(*Context, CR.getLower()));
}
}
}
BinaryOperator::CreateURem(BO->getOperand(0), BO->getOperand(1),
BO->getName());
InsertNewInstBefore(NewRem, ICI);
- return new ICmpInst(ICI.getPredicate(), NewRem,
- Constant::getNullValue(BO->getType()));
+ return new ICmpInst(*Context, ICI.getPredicate(), NewRem,
+ Context->getNullValue(BO->getType()));
}
}
break;
// Replace ((add A, B) != C) with (A != C-B) if B & C are constants.
if (ConstantInt *BOp1C = dyn_cast<ConstantInt>(BO->getOperand(1))) {
if (BO->hasOneUse())
- return new ICmpInst(ICI.getPredicate(), BO->getOperand(0),
- ConstantExpr::getSub(RHS, BOp1C));
+ return new ICmpInst(*Context, ICI.getPredicate(), BO->getOperand(0),
+ Context->getConstantExprSub(RHS, BOp1C));
} else if (RHSV == 0) {
// Replace ((add A, B) != 0) with (A != -B) if A or B is
// efficiently invertible, or if the add has just this one use.
Value *BOp0 = BO->getOperand(0), *BOp1 = BO->getOperand(1);
- if (Value *NegVal = dyn_castNegVal(BOp1))
- return new ICmpInst(ICI.getPredicate(), BOp0, NegVal);
- else if (Value *NegVal = dyn_castNegVal(BOp0))
- return new ICmpInst(ICI.getPredicate(), NegVal, BOp1);
+ if (Value *NegVal = dyn_castNegVal(BOp1, Context))
+ return new ICmpInst(*Context, ICI.getPredicate(), BOp0, NegVal);
+ else if (Value *NegVal = dyn_castNegVal(BOp0, Context))
+ return new ICmpInst(*Context, ICI.getPredicate(), NegVal, BOp1);
else if (BO->hasOneUse()) {
- Instruction *Neg = BinaryOperator::CreateNeg(BOp1);
+ Instruction *Neg = BinaryOperator::CreateNeg(*Context, BOp1);
InsertNewInstBefore(Neg, ICI);
Neg->takeName(BO);
- return new ICmpInst(ICI.getPredicate(), BOp0, Neg);
+ return new ICmpInst(*Context, ICI.getPredicate(), BOp0, Neg);
}
}
break;
// For the xor case, we can xor two constants together, eliminating
// the explicit xor.
if (Constant *BOC = dyn_cast<Constant>(BO->getOperand(1)))
- return new ICmpInst(ICI.getPredicate(), BO->getOperand(0),
- ConstantExpr::getXor(RHS, BOC));
+ return new ICmpInst(*Context, ICI.getPredicate(), BO->getOperand(0),
+ Context->getConstantExprXor(RHS, BOC));
// FALLTHROUGH
case Instruction::Sub:
// Replace (([sub|xor] A, B) != 0) with (A != B)
if (RHSV == 0)
- return new ICmpInst(ICI.getPredicate(), BO->getOperand(0),
+ return new ICmpInst(*Context, ICI.getPredicate(), BO->getOperand(0),
BO->getOperand(1));
break;
// If bits are being or'd in that are not present in the constant we
// are comparing against, then the comparison could never succeed!
if (Constant *BOC = dyn_cast<Constant>(BO->getOperand(1))) {
- Constant *NotCI = ConstantExpr::getNot(RHS);
- if (!ConstantExpr::getAnd(BOC, NotCI)->isNullValue())
- return ReplaceInstUsesWith(ICI, ConstantInt::get(Type::Int1Ty,
- isICMP_NE));
+ Constant *NotCI = Context->getConstantExprNot(RHS);
+ if (!Context->getConstantExprAnd(BOC, NotCI)->isNullValue())
+ return ReplaceInstUsesWith(ICI,
+ ConstantInt::get(Type::Int1Ty,
+ isICMP_NE));
}
break;
// If bits are being compared against that are and'd out, then the
// comparison can never succeed!
if ((RHSV & ~BOC->getValue()) != 0)
- return ReplaceInstUsesWith(ICI, ConstantInt::get(Type::Int1Ty,
- isICMP_NE));
+ return ReplaceInstUsesWith(ICI,
+ ConstantInt::get(Type::Int1Ty,
+ isICMP_NE));
// If we have ((X & C) == C), turn it into ((X & C) != 0).
if (RHS == BOC && RHSV.isPowerOf2())
- return new ICmpInst(isICMP_NE ? ICmpInst::ICMP_EQ :
+ return new ICmpInst(*Context, isICMP_NE ? ICmpInst::ICMP_EQ :
ICmpInst::ICMP_NE, LHSI,
- Constant::getNullValue(RHS->getType()));
+ Context->getNullValue(RHS->getType()));
// Replace (and X, (1 << size(X)-1) != 0) with x s< 0
if (BOC->getValue().isSignBit()) {
Value *X = BO->getOperand(0);
- Constant *Zero = Constant::getNullValue(X->getType());
+ Constant *Zero = Context->getNullValue(X->getType());
ICmpInst::Predicate pred = isICMP_NE ?
ICmpInst::ICMP_SLT : ICmpInst::ICMP_SGE;
- return new ICmpInst(pred, X, Zero);
+ return new ICmpInst(*Context, pred, X, Zero);
}
// ((X & ~7) == 0) --> X < 8
if (RHSV == 0 && isHighOnes(BOC)) {
Value *X = BO->getOperand(0);
- Constant *NegX = ConstantExpr::getNeg(BOC);
+ Constant *NegX = Context->getConstantExprNeg(BOC);
ICmpInst::Predicate pred = isICMP_NE ?
ICmpInst::ICMP_UGE : ICmpInst::ICMP_ULT;
- return new ICmpInst(pred, X, NegX);
+ return new ICmpInst(*Context, pred, X, NegX);
}
}
default: break;
if (II->getIntrinsicID() == Intrinsic::bswap) {
AddToWorkList(II);
ICI.setOperand(0, II->getOperand(1));
- ICI.setOperand(1, ConstantInt::get(RHSV.byteSwap()));
+ ICI.setOperand(1, ConstantInt::get(*Context, RHSV.byteSwap()));
return &ICI;
}
}
// Turn icmp (ptrtoint x), (ptrtoint/c) into a compare of the input if the
// integer type is the same size as the pointer type.
- if (LHSCI->getOpcode() == Instruction::PtrToInt &&
- getTargetData().getPointerSizeInBits() ==
+ if (TD && LHSCI->getOpcode() == Instruction::PtrToInt &&
+ TD->getPointerSizeInBits() ==
cast<IntegerType>(DestTy)->getBitWidth()) {
Value *RHSOp = 0;
if (Constant *RHSC = dyn_cast<Constant>(ICI.getOperand(1))) {
- RHSOp = ConstantExpr::getIntToPtr(RHSC, SrcTy);
+ RHSOp = Context->getConstantExprIntToPtr(RHSC, SrcTy);
} else if (PtrToIntInst *RHSC = dyn_cast<PtrToIntInst>(ICI.getOperand(1))) {
RHSOp = RHSC->getOperand(0);
// If the pointer types don't match, insert a bitcast.
}
if (RHSOp)
- return new ICmpInst(ICI.getPredicate(), LHSCIOp, RHSOp);
+ return new ICmpInst(*Context, ICI.getPredicate(), LHSCIOp, RHSOp);
}
// The code below only handles extension cast instructions, so far.
// Deal with equality cases early.
if (ICI.isEquality())
- return new ICmpInst(ICI.getPredicate(), LHSCIOp, RHSCIOp);
+ return new ICmpInst(*Context, ICI.getPredicate(), LHSCIOp, RHSCIOp);
// A signed comparison of sign extended values simplifies into a
// signed comparison.
if (isSignedCmp && isSignedExt)
- return new ICmpInst(ICI.getPredicate(), LHSCIOp, RHSCIOp);
+ return new ICmpInst(*Context, ICI.getPredicate(), LHSCIOp, RHSCIOp);
// The other three cases all fold into an unsigned comparison.
- return new ICmpInst(ICI.getUnsignedPredicate(), LHSCIOp, RHSCIOp);
+ return new ICmpInst(*Context, ICI.getUnsignedPredicate(), LHSCIOp, RHSCIOp);
}
// If we aren't dealing with a constant on the RHS, exit early
// Compute the constant that would happen if we truncated to SrcTy then
// reextended to DestTy.
- Constant *Res1 = ConstantExpr::getTrunc(CI, SrcTy);
- Constant *Res2 = ConstantExpr::getCast(LHSCI->getOpcode(), Res1, DestTy);
+ Constant *Res1 = Context->getConstantExprTrunc(CI, SrcTy);
+ Constant *Res2 = Context->getConstantExprCast(LHSCI->getOpcode(),
+ Res1, DestTy);
// If the re-extended constant didn't change...
if (Res2 == CI) {
// However, we allow this when the compare is EQ/NE, because they are
// signless.
if (isSignedExt == isSignedCmp || ICI.isEquality())
- return new ICmpInst(ICI.getPredicate(), LHSCIOp, Res1);
+ return new ICmpInst(*Context, ICI.getPredicate(), LHSCIOp, Res1);
return 0;
}
// First, handle some easy cases. We know the result cannot be equal at this
// point so handle the ICI.isEquality() cases
if (ICI.getPredicate() == ICmpInst::ICMP_EQ)
- return ReplaceInstUsesWith(ICI, ConstantInt::getFalse());
+ return ReplaceInstUsesWith(ICI, Context->getFalse());
if (ICI.getPredicate() == ICmpInst::ICMP_NE)
- return ReplaceInstUsesWith(ICI, ConstantInt::getTrue());
+ return ReplaceInstUsesWith(ICI, Context->getTrue());
// Evaluate the comparison for LT (we invert for GT below). LE and GE cases
// should have been folded away previously and not enter in here.
if (isSignedCmp) {
// We're performing a signed comparison.
if (cast<ConstantInt>(CI)->getValue().isNegative())
- Result = ConstantInt::getFalse(); // X < (small) --> false
+ Result = Context->getFalse(); // X < (small) --> false
else
- Result = ConstantInt::getTrue(); // X < (large) --> true
+ Result = Context->getTrue(); // X < (large) --> true
} else {
// We're performing an unsigned comparison.
if (isSignedExt) {
// We're performing an unsigned comp with a sign extended value.
// This is true if the input is >= 0. [aka >s -1]
- Constant *NegOne = ConstantInt::getAllOnesValue(SrcTy);
- Result = InsertNewInstBefore(new ICmpInst(ICmpInst::ICMP_SGT, LHSCIOp,
- NegOne, ICI.getName()), ICI);
+ Constant *NegOne = Context->getAllOnesValue(SrcTy);
+ Result = InsertNewInstBefore(new ICmpInst(*Context, ICmpInst::ICMP_SGT,
+ LHSCIOp, NegOne, ICI.getName()), ICI);
} else {
// Unsigned extend & unsigned compare -> always true.
- Result = ConstantInt::getTrue();
+ Result = Context->getTrue();
}
}
ICI.getPredicate()==ICmpInst::ICMP_SGT) &&
"ICmp should be folded!");
if (Constant *CI = dyn_cast<Constant>(Result))
- return ReplaceInstUsesWith(ICI, ConstantExpr::getNot(CI));
- return BinaryOperator::CreateNot(Result);
+ return ReplaceInstUsesWith(ICI, Context->getConstantExprNot(CI));
+ return BinaryOperator::CreateNot(*Context, Result);
}
Instruction *InstCombiner::visitShl(BinaryOperator &I) {
// shl X, 0 == X and shr X, 0 == X
// shl 0, X == 0 and shr 0, X == 0
- if (Op1 == Constant::getNullValue(Op1->getType()) ||
- Op0 == Constant::getNullValue(Op0->getType()))
+ if (Op1 == Context->getNullValue(Op1->getType()) ||
+ Op0 == Context->getNullValue(Op0->getType()))
return ReplaceInstUsesWith(I, Op0);
if (isa<UndefValue>(Op0)) {
if (I.getOpcode() == Instruction::AShr) // undef >>s X -> undef
return ReplaceInstUsesWith(I, Op0);
else // undef << X -> 0, undef >>u X -> 0
- return ReplaceInstUsesWith(I, Constant::getNullValue(I.getType()));
+ return ReplaceInstUsesWith(I, Context->getNullValue(I.getType()));
}
if (isa<UndefValue>(Op1)) {
if (I.getOpcode() == Instruction::AShr) // X >>s undef -> X
return ReplaceInstUsesWith(I, Op0);
else // X << undef, X >>u undef -> 0
- return ReplaceInstUsesWith(I, Constant::getNullValue(I.getType()));
+ return ReplaceInstUsesWith(I, Context->getNullValue(I.getType()));
}
// See if we can fold away this shift.
//
if (Op1->uge(TypeBits)) {
if (I.getOpcode() != Instruction::AShr)
- return ReplaceInstUsesWith(I, Constant::getNullValue(Op0->getType()));
+ return ReplaceInstUsesWith(I, Context->getNullValue(Op0->getType()));
else {
I.setOperand(1, ConstantInt::get(I.getType(), TypeBits-1));
return &I;
if (BO->getOpcode() == Instruction::Mul && isLeftShift)
if (Constant *BOOp = dyn_cast<Constant>(BO->getOperand(1)))
return BinaryOperator::CreateMul(BO->getOperand(0),
- ConstantExpr::getShl(BOOp, Op1));
+ Context->getConstantExprShl(BOOp, Op1));
// Try to fold constant and into select arguments.
if (SelectInst *SI = dyn_cast<SelectInst>(Op0))
if (TrOp && I.isLogicalShift() && TrOp->isShift() &&
isa<ConstantInt>(TrOp->getOperand(1))) {
// Okay, we'll do this xform. Make the shift of shift.
- Constant *ShAmt = ConstantExpr::getZExt(Op1, TrOp->getType());
+ Constant *ShAmt = Context->getConstantExprZExt(Op1, TrOp->getType());
Instruction *NSh = BinaryOperator::Create(I.getOpcode(), TrOp, ShAmt,
I.getName());
InsertNewInstBefore(NSh, I); // (shift2 (shift1 & 0x00FF), c2)
MaskV = MaskV.lshr(Op1->getZExtValue());
}
- Instruction *And = BinaryOperator::CreateAnd(NSh, ConstantInt::get(MaskV),
- TI->getName());
+ Instruction *And =
+ BinaryOperator::CreateAnd(NSh, ConstantInt::get(*Context, MaskV),
+ TI->getName());
InsertNewInstBefore(And, I); // shift1 & 0x00FF
// Return the value truncated to the interesting size.
// These operators commute.
// Turn (Y + (X >> C)) << C -> (X + (Y << C)) & (~0 << C)
if (isLeftShift && Op0BO->getOperand(1)->hasOneUse() &&
- match(Op0BO->getOperand(1), m_Shr(m_Value(V1), m_Specific(Op1)))){
+ match(Op0BO->getOperand(1), m_Shr(m_Value(V1),
+ m_Specific(Op1)), *Context)){
Instruction *YS = BinaryOperator::CreateShl(
Op0BO->getOperand(0), Op1,
Op0BO->getName());
Op0BO->getOperand(1)->getName());
InsertNewInstBefore(X, I); // (X + (Y << C))
uint32_t Op1Val = Op1->getLimitedValue(TypeBits);
- return BinaryOperator::CreateAnd(X, ConstantInt::get(
+ return BinaryOperator::CreateAnd(X, ConstantInt::get(*Context,
APInt::getHighBitsSet(TypeBits, TypeBits-Op1Val)));
}
if (isLeftShift && Op0BOOp1->hasOneUse() &&
match(Op0BOOp1,
m_And(m_Shr(m_Value(V1), m_Specific(Op1)),
- m_ConstantInt(CC))) &&
+ m_ConstantInt(CC)), *Context) &&
cast<BinaryOperator>(Op0BOOp1)->getOperand(0)->hasOneUse()) {
Instruction *YS = BinaryOperator::CreateShl(
Op0BO->getOperand(0), Op1,
Op0BO->getName());
InsertNewInstBefore(YS, I); // (Y << C)
Instruction *XM =
- BinaryOperator::CreateAnd(V1, ConstantExpr::getShl(CC, Op1),
+ BinaryOperator::CreateAnd(V1,
+ Context->getConstantExprShl(CC, Op1),
V1->getName()+".mask");
InsertNewInstBefore(XM, I); // X & (CC << C)
case Instruction::Sub: {
// Turn ((X >> C) + Y) << C -> (X + (Y << C)) & (~0 << C)
if (isLeftShift && Op0BO->getOperand(0)->hasOneUse() &&
- match(Op0BO->getOperand(0), m_Shr(m_Value(V1), m_Specific(Op1)))){
+ match(Op0BO->getOperand(0), m_Shr(m_Value(V1),
+ m_Specific(Op1)), *Context)){
Instruction *YS = BinaryOperator::CreateShl(
Op0BO->getOperand(1), Op1,
Op0BO->getName());
Op0BO->getOperand(0)->getName());
InsertNewInstBefore(X, I); // (X + (Y << C))
uint32_t Op1Val = Op1->getLimitedValue(TypeBits);
- return BinaryOperator::CreateAnd(X, ConstantInt::get(
+ return BinaryOperator::CreateAnd(X, ConstantInt::get(*Context,
APInt::getHighBitsSet(TypeBits, TypeBits-Op1Val)));
}
if (isLeftShift && Op0BO->getOperand(0)->hasOneUse() &&
match(Op0BO->getOperand(0),
m_And(m_Shr(m_Value(V1), m_Value(V2)),
- m_ConstantInt(CC))) && V2 == Op1 &&
+ m_ConstantInt(CC)), *Context) && V2 == Op1 &&
cast<BinaryOperator>(Op0BO->getOperand(0))
->getOperand(0)->hasOneUse()) {
Instruction *YS = BinaryOperator::CreateShl(
Op0BO->getName());
InsertNewInstBefore(YS, I); // (Y << C)
Instruction *XM =
- BinaryOperator::CreateAnd(V1, ConstantExpr::getShl(CC, Op1),
+ BinaryOperator::CreateAnd(V1,
+ Context->getConstantExprShl(CC, Op1),
V1->getName()+".mask");
InsertNewInstBefore(XM, I); // X & (CC << C)
isValid = Op0C->getValue()[TypeBits-1] == highBitSet;
if (isValid) {
- Constant *NewRHS = ConstantExpr::get(I.getOpcode(), Op0C, Op1);
+ Constant *NewRHS = Context->getConstantExpr(I.getOpcode(), Op0C, Op1);
Instruction *NewShift =
BinaryOperator::Create(I.getOpcode(), Op0BO->getOperand(0), Op1);
// saturates.
if (AmtSum >= TypeBits) {
if (I.getOpcode() != Instruction::AShr)
- return ReplaceInstUsesWith(I, Constant::getNullValue(I.getType()));
+ return ReplaceInstUsesWith(I, Context->getNullValue(I.getType()));
AmtSum = TypeBits-1; // Saturate to 31 for i32 ashr.
}
} else if (ShiftOp->getOpcode() == Instruction::LShr &&
I.getOpcode() == Instruction::AShr) {
if (AmtSum >= TypeBits)
- return ReplaceInstUsesWith(I, Constant::getNullValue(I.getType()));
+ return ReplaceInstUsesWith(I, Context->getNullValue(I.getType()));
// ((X >>u C1) >>s C2) -> (X >>u (C1+C2)) since C1 != 0.
return BinaryOperator::CreateLShr(X, ConstantInt::get(Ty, AmtSum));
InsertNewInstBefore(Shift, I);
APInt Mask(APInt::getLowBitsSet(TypeBits, TypeBits - ShiftAmt2));
- return BinaryOperator::CreateAnd(Shift, ConstantInt::get(Mask));
+ return BinaryOperator::CreateAnd(Shift, ConstantInt::get(*Context, Mask));
}
// Okay, if we get here, one shift must be left, and the other shift must be
// If we have ((X >>? C) << C), turn this into X & (-1 << C).
if (I.getOpcode() == Instruction::Shl) {
APInt Mask(APInt::getHighBitsSet(TypeBits, TypeBits - ShiftAmt1));
- return BinaryOperator::CreateAnd(X, ConstantInt::get(Mask));
+ return BinaryOperator::CreateAnd(X, ConstantInt::get(*Context, Mask));
}
// If we have ((X << C) >>u C), turn this into X & (-1 >>u C).
if (I.getOpcode() == Instruction::LShr) {
APInt Mask(APInt::getLowBitsSet(TypeBits, TypeBits - ShiftAmt1));
- return BinaryOperator::CreateAnd(X, ConstantInt::get(Mask));
+ return BinaryOperator::CreateAnd(X, ConstantInt::get(*Context, Mask));
}
// We can simplify ((X << C) >>s C) into a trunc + sext.
// NOTE: we could do this for any C, but that would make 'unusual' integer
case 32 :
case 64 :
case 128:
- SExtType = IntegerType::get(Ty->getBitWidth() - ShiftAmt1);
+ SExtType = Context->getIntegerType(Ty->getBitWidth() - ShiftAmt1);
break;
default: break;
}
InsertNewInstBefore(Shift, I);
APInt Mask(APInt::getHighBitsSet(TypeBits, TypeBits - ShiftAmt2));
- return BinaryOperator::CreateAnd(Shift, ConstantInt::get(Mask));
+ return BinaryOperator::CreateAnd(Shift,
+ ConstantInt::get(*Context, Mask));
}
// (X << C1) >>u C2 --> X >>u (C2-C1) & (-1 >> C2)
InsertNewInstBefore(Shift, I);
APInt Mask(APInt::getLowBitsSet(TypeBits, TypeBits - ShiftAmt2));
- return BinaryOperator::CreateAnd(Shift, ConstantInt::get(Mask));
+ return BinaryOperator::CreateAnd(Shift,
+ ConstantInt::get(*Context, Mask));
}
// We can't handle (X << C1) >>s C2, it shifts arbitrary bits in.
InsertNewInstBefore(Shift, I);
APInt Mask(APInt::getHighBitsSet(TypeBits, TypeBits - ShiftAmt2));
- return BinaryOperator::CreateAnd(Shift, ConstantInt::get(Mask));
+ return BinaryOperator::CreateAnd(Shift,
+ ConstantInt::get(*Context, Mask));
}
// (X << C1) >>u C2 --> X << (C1-C2) & (-1 >> C2)
InsertNewInstBefore(Shift, I);
APInt Mask(APInt::getLowBitsSet(TypeBits, TypeBits - ShiftAmt2));
- return BinaryOperator::CreateAnd(Shift, ConstantInt::get(Mask));
+ return BinaryOperator::CreateAnd(Shift,
+ ConstantInt::get(*Context, Mask));
}
// We can't handle (X << C1) >>a C2, it shifts arbitrary bits in.
/// X*Scale+Offset.
///
static Value *DecomposeSimpleLinearExpr(Value *Val, unsigned &Scale,
- int &Offset) {
+ int &Offset, LLVMContext *Context) {
assert(Val->getType() == Type::Int32Ty && "Unexpected allocation size type!");
if (ConstantInt *CI = dyn_cast<ConstantInt>(Val)) {
Offset = CI->getZExtValue();
// where C1 is divisible by C2.
unsigned SubScale;
Value *SubVal =
- DecomposeSimpleLinearExpr(I->getOperand(0), SubScale, Offset);
+ DecomposeSimpleLinearExpr(I->getOperand(0), SubScale,
+ Offset, Context);
Offset += RHS->getZExtValue();
Scale = SubScale;
return SubVal;
EraseInstFromFunction(*User);
}
}
-
+
+ // This requires TargetData to get the alloca alignment and size information.
+ if (!TD) return 0;
+
// Get the type really allocated and the type casted to.
const Type *AllocElTy = AI.getAllocatedType();
const Type *CastElTy = PTy->getElementType();
unsigned ArraySizeScale;
int ArrayOffset;
Value *NumElements = // See if the array size is a decomposable linear expr.
- DecomposeSimpleLinearExpr(AI.getOperand(0), ArraySizeScale, ArrayOffset);
+ DecomposeSimpleLinearExpr(AI.getOperand(0), ArraySizeScale,
+ ArrayOffset, Context);
// If we can now satisfy the modulus, by using a non-1 scale, we really can
// do the xform.
// If the allocation size is constant, form a constant mul expression
Amt = ConstantInt::get(Type::Int32Ty, Scale);
if (isa<ConstantInt>(NumElements))
- Amt = ConstantExpr::getMul(cast<ConstantInt>(NumElements),
+ Amt = Context->getConstantExprMul(cast<ConstantInt>(NumElements),
cast<ConstantInt>(Amt));
// otherwise multiply the amount and the number of elements
else {
CanEvaluateInDifferentType(I->getOperand(1), Ty, CastOpc,
NumCastsRemoved);
+ case Instruction::UDiv:
+ case Instruction::URem: {
+ // UDiv and URem can be truncated if all the truncated bits are zero.
+ uint32_t OrigBitWidth = OrigTy->getScalarSizeInBits();
+ uint32_t BitWidth = Ty->getScalarSizeInBits();
+ if (BitWidth < OrigBitWidth) {
+ APInt Mask = APInt::getHighBitsSet(OrigBitWidth, OrigBitWidth-BitWidth);
+ if (MaskedValueIsZero(I->getOperand(0), Mask) &&
+ MaskedValueIsZero(I->getOperand(1), Mask)) {
+ return CanEvaluateInDifferentType(I->getOperand(0), Ty, CastOpc,
+ NumCastsRemoved) &&
+ CanEvaluateInDifferentType(I->getOperand(1), Ty, CastOpc,
+ NumCastsRemoved);
+ }
+ }
+ break;
+ }
case Instruction::Shl:
// If we are truncating the result of this SHL, and if it's a shift of a
// constant amount, we can always perform a SHL in a smaller type.
Value *InstCombiner::EvaluateInDifferentType(Value *V, const Type *Ty,
bool isSigned) {
if (Constant *C = dyn_cast<Constant>(V))
- return ConstantExpr::getIntegerCast(C, Ty, isSigned /*Sext or ZExt*/);
+ return Context->getConstantExprIntegerCast(C, Ty,
+ isSigned /*Sext or ZExt*/);
// Otherwise, it must be an instruction.
Instruction *I = cast<Instruction>(V);
case Instruction::Xor:
case Instruction::AShr:
case Instruction::LShr:
- case Instruction::Shl: {
+ case Instruction::Shl:
+ case Instruction::UDiv:
+ case Instruction::URem: {
Value *LHS = EvaluateInDifferentType(I->getOperand(0), Ty, isSigned);
Value *RHS = EvaluateInDifferentType(I->getOperand(1), Ty, isSigned);
Res = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
}
default:
// TODO: Can handle more cases here.
- assert(0 && "Unreachable!");
+ llvm_unreachable("Unreachable!");
break;
}
/// resultant element type, otherwise return null.
static const Type *FindElementAtOffset(const Type *Ty, int64_t Offset,
SmallVectorImpl<Value*> &NewIndices,
- const TargetData *TD) {
+ const TargetData *TD,
+ LLVMContext *Context) {
+ if (!TD) return 0;
if (!Ty->isSized()) return 0;
// Start with the index over the outer type. Note that the type size
// GEP computes a constant offset, see if we can convert these three
// instructions into fewer. This typically happens with unions and other
// non-type-safe code.
- if (GEP->hasOneUse() && isa<BitCastInst>(GEP->getOperand(0))) {
+ if (TD && GEP->hasOneUse() && isa<BitCastInst>(GEP->getOperand(0))) {
if (GEP->hasAllConstantIndices()) {
// We are guaranteed to get a constant from EmitGEPOffset.
- ConstantInt *OffsetV = cast<ConstantInt>(EmitGEPOffset(GEP, CI, *this));
+ ConstantInt *OffsetV =
+ cast<ConstantInt>(EmitGEPOffset(GEP, CI, *this));
int64_t Offset = OffsetV->getSExtValue();
// Get the base pointer input of the bitcast, and the type it points to.
const Type *GEPIdxTy =
cast<PointerType>(OrigBase->getType())->getElementType();
SmallVector<Value*, 8> NewIndices;
- if (FindElementAtOffset(GEPIdxTy, Offset, NewIndices, TD)) {
+ if (FindElementAtOffset(GEPIdxTy, Offset, NewIndices, TD, Context)) {
// If we were able to index down into an element, create the GEP
// and bitcast the result. This eliminates one bitcast, potentially
// two.
}
}
-/// Only the TRUNC, ZEXT, SEXT, and BITCAST can both operand and result as
-/// integer types. This function implements the common transforms for all those
-/// cases.
-/// @brief Implement the transforms common to CastInst with integer operands
+/// commonIntCastTransforms - This function implements the common transforms
+/// for trunc, zext, and sext.
Instruction *InstCombiner::commonIntCastTransforms(CastInst &CI) {
if (Instruction *Result = commonCastTransforms(CI))
return Result;
// Attempt to propagate the cast into the instruction for int->int casts.
int NumCastsRemoved = 0;
- if (!isa<BitCastInst>(CI) &&
- // Only do this if the dest type is a simple type, don't convert the
- // expression tree to something weird like i93 unless the source is also
- // strange.
- (isSafeIntegerType(DestTy->getScalarType()) ||
+ // Only do this if the dest type is a simple type, don't convert the
+ // expression tree to something weird like i93 unless the source is also
+ // strange.
+ if ((isSafeIntegerType(DestTy->getScalarType()) ||
!isSafeIntegerType(SrcI->getType()->getScalarType())) &&
CanEvaluateInDifferentType(SrcI, DestTy,
CI.getOpcode(), NumCastsRemoved)) {
default:
// All the others use floating point so we shouldn't actually
// get here because of the check above.
- assert(0 && "Unknown cast type");
+ llvm_unreachable("Unknown cast type");
case Instruction::Trunc:
DoXForm = true;
break;
assert(Res->getType() == DestTy);
switch (CI.getOpcode()) {
- default: assert(0 && "Unknown cast type!");
+ default: llvm_unreachable("Unknown cast type!");
case Instruction::Trunc:
- case Instruction::BitCast:
// Just replace this cast with the result.
return ReplaceInstUsesWith(CI, Res);
case Instruction::ZExt: {
return ReplaceInstUsesWith(CI, Res);
// We need to emit an AND to clear the high bits.
- Constant *C = ConstantInt::get(APInt::getLowBitsSet(DestBitSize,
- SrcBitSize));
+ Constant *C = ConstantInt::get(*Context,
+ APInt::getLowBitsSet(DestBitSize, SrcBitSize));
return BinaryOperator::CreateAnd(Res, C);
}
case Instruction::SExt: {
case Instruction::Or:
case Instruction::Xor:
// If we are discarding information, rewrite.
- if (DestBitSize <= SrcBitSize && DestBitSize != 1) {
- // Don't insert two casts if they cannot be eliminated. We allow
- // two casts to be inserted if the sizes are the same. This could
- // only be converting signedness, which is a noop.
- if (DestBitSize == SrcBitSize ||
- !ValueRequiresCast(CI.getOpcode(), Op1, DestTy,TD) ||
+ if (DestBitSize < SrcBitSize && DestBitSize != 1) {
+ // Don't insert two casts unless at least one can be eliminated.
+ if (!ValueRequiresCast(CI.getOpcode(), Op1, DestTy, TD) ||
!ValueRequiresCast(CI.getOpcode(), Op0, DestTy, TD)) {
- Instruction::CastOps opcode = CI.getOpcode();
- Value *Op0c = InsertCastBefore(opcode, Op0, DestTy, *SrcI);
- Value *Op1c = InsertCastBefore(opcode, Op1, DestTy, *SrcI);
+ Value *Op0c = InsertCastBefore(Instruction::Trunc, Op0, DestTy, *SrcI);
+ Value *Op1c = InsertCastBefore(Instruction::Trunc, Op1, DestTy, *SrcI);
return BinaryOperator::Create(
cast<BinaryOperator>(SrcI)->getOpcode(), Op0c, Op1c);
}
// cast (xor bool X, true) to int --> xor (cast bool X to int), 1
if (isa<ZExtInst>(CI) && SrcBitSize == 1 &&
SrcI->getOpcode() == Instruction::Xor &&
- Op1 == ConstantInt::getTrue() &&
+ Op1 == Context->getTrue() &&
(!Op0->hasOneUse() || !isa<CmpInst>(Op0))) {
Value *New = InsertCastBefore(Instruction::ZExt, Op0, DestTy, CI);
- return BinaryOperator::CreateXor(New, ConstantInt::get(CI.getType(), 1));
- }
- break;
- case Instruction::SDiv:
- case Instruction::UDiv:
- case Instruction::SRem:
- case Instruction::URem:
- // If we are just changing the sign, rewrite.
- if (DestBitSize == SrcBitSize) {
- // Don't insert two casts if they cannot be eliminated. We allow
- // two casts to be inserted if the sizes are the same. This could
- // only be converting signedness, which is a noop.
- if (!ValueRequiresCast(CI.getOpcode(), Op1, DestTy, TD) ||
- !ValueRequiresCast(CI.getOpcode(), Op0, DestTy, TD)) {
- Value *Op0c = InsertCastBefore(Instruction::BitCast,
- Op0, DestTy, *SrcI);
- Value *Op1c = InsertCastBefore(Instruction::BitCast,
- Op1, DestTy, *SrcI);
- return BinaryOperator::Create(
- cast<BinaryOperator>(SrcI)->getOpcode(), Op0c, Op1c);
- }
+ return BinaryOperator::CreateXor(New,
+ ConstantInt::get(CI.getType(), 1));
}
break;
- case Instruction::Shl:
- // Allow changing the sign of the source operand. Do not allow
- // changing the size of the shift, UNLESS the shift amount is a
- // constant. We must not change variable sized shifts to a smaller
- // size, because it is undefined to shift more bits out than exist
- // in the value.
- if (DestBitSize == SrcBitSize ||
- (DestBitSize < SrcBitSize && isa<Constant>(Op1))) {
- Instruction::CastOps opcode = (DestBitSize == SrcBitSize ?
- Instruction::BitCast : Instruction::Trunc);
- Value *Op0c = InsertCastBefore(opcode, Op0, DestTy, *SrcI);
- Value *Op1c = InsertCastBefore(opcode, Op1, DestTy, *SrcI);
+ case Instruction::Shl: {
+ // Canonicalize trunc inside shl, if we can.
+ ConstantInt *CI = dyn_cast<ConstantInt>(Op1);
+ if (CI && DestBitSize < SrcBitSize &&
+ CI->getLimitedValue(DestBitSize) < DestBitSize) {
+ Value *Op0c = InsertCastBefore(Instruction::Trunc, Op0, DestTy, *SrcI);
+ Value *Op1c = InsertCastBefore(Instruction::Trunc, Op1, DestTy, *SrcI);
return BinaryOperator::CreateShl(Op0c, Op1c);
}
break;
- case Instruction::AShr:
- // If this is a signed shr, and if all bits shifted in are about to be
- // truncated off, turn it into an unsigned shr to allow greater
- // simplifications.
- if (DestBitSize < SrcBitSize &&
- isa<ConstantInt>(Op1)) {
- uint32_t ShiftAmt = cast<ConstantInt>(Op1)->getLimitedValue(SrcBitSize);
- if (SrcBitSize > ShiftAmt && SrcBitSize-ShiftAmt >= DestBitSize) {
- // Insert the new logical shift right.
- return BinaryOperator::CreateLShr(Op0, Op1);
- }
- }
- break;
+ }
}
return 0;
}
uint32_t SrcBitWidth = Src->getType()->getScalarSizeInBits();
// Canonicalize trunc x to i1 -> (icmp ne (and x, 1), 0)
- if (DestBitWidth == 1 &&
- isa<VectorType>(Ty) == isa<VectorType>(Src->getType())) {
+ if (DestBitWidth == 1) {
Constant *One = ConstantInt::get(Src->getType(), 1);
Src = InsertNewInstBefore(BinaryOperator::CreateAnd(Src, One, "tmp"), CI);
- Value *Zero = Constant::getNullValue(Src->getType());
- return new ICmpInst(ICmpInst::ICMP_NE, Src, Zero);
+ Value *Zero = Context->getNullValue(Src->getType());
+ return new ICmpInst(*Context, ICmpInst::ICMP_NE, Src, Zero);
}
// Optimize trunc(lshr(), c) to pull the shift through the truncate.
ConstantInt *ShAmtV = 0;
Value *ShiftOp = 0;
if (Src->hasOneUse() &&
- match(Src, m_LShr(m_Value(ShiftOp), m_ConstantInt(ShAmtV)))) {
+ match(Src, m_LShr(m_Value(ShiftOp), m_ConstantInt(ShAmtV)), *Context)) {
uint32_t ShAmt = ShAmtV->getLimitedValue(SrcBitWidth);
// Get a mask for the bits shifting in.
APInt Mask(APInt::getLowBitsSet(SrcBitWidth, ShAmt).shl(DestBitWidth));
if (MaskedValueIsZero(ShiftOp, Mask)) {
if (ShAmt >= DestBitWidth) // All zeros.
- return ReplaceInstUsesWith(CI, Constant::getNullValue(Ty));
+ return ReplaceInstUsesWith(CI, Context->getNullValue(Ty));
// Okay, we can shrink this. Truncate the input, then return a new
// shift.
Value *V1 = InsertCastBefore(Instruction::Trunc, ShiftOp, Ty, CI);
- Value *V2 = ConstantExpr::getTrunc(ShAmtV, Ty);
+ Value *V2 = Context->getConstantExprTrunc(ShAmtV, Ty);
return BinaryOperator::CreateLShr(V1, V2);
}
}
// (X&4) == 2 --> false
// (X&4) != 2 --> true
Constant *Res = ConstantInt::get(Type::Int1Ty, isNE);
- Res = ConstantExpr::getZExt(Res, CI.getType());
+ Res = Context->getConstantExprZExt(Res, CI.getType());
return ReplaceInstUsesWith(CI, Res);
}
// Perform a logical shr by shiftamt.
// Insert the shift to put the result in the low bit.
In = InsertNewInstBefore(BinaryOperator::CreateLShr(In,
- ConstantInt::get(In->getType(), ShiftAmt),
+ ConstantInt::get(In->getType(), ShiftAmt),
In->getName()+".lobit"), CI);
}
Instruction *Trunc = new TruncInst(A, CI.getType(), "tmp");
InsertNewInstBefore(Trunc, CI);
APInt AndValue(APInt::getLowBitsSet(DstSize, MidSize));
- return BinaryOperator::CreateAnd(Trunc, ConstantInt::get(Trunc->getType(),
+ return BinaryOperator::CreateAnd(Trunc,
+ ConstantInt::get(Trunc->getType(),
AndValue));
}
}
if (TI0->getType() == CI.getType())
return
BinaryOperator::CreateAnd(TI0,
- ConstantExpr::getZExt(C, CI.getType()));
+ Context->getConstantExprZExt(C, CI.getType()));
}
// zext((trunc(t) & C) ^ C) -> ((t & zext(C)) ^ zext(C)).
if (TruncInst *TI = dyn_cast<TruncInst>(And->getOperand(0))) {
Value *TI0 = TI->getOperand(0);
if (TI0->getType() == CI.getType()) {
- Constant *ZC = ConstantExpr::getZExt(C, CI.getType());
+ Constant *ZC = Context->getConstantExprZExt(C, CI.getType());
Instruction *NewAnd = BinaryOperator::CreateAnd(TI0, ZC, "tmp");
InsertNewInstBefore(NewAnd, *And);
return BinaryOperator::CreateXor(NewAnd, ZC);
// Canonicalize sign-extend from i1 to a select.
if (Src->getType() == Type::Int1Ty)
return SelectInst::Create(Src,
- ConstantInt::getAllOnesValue(CI.getType()),
- Constant::getNullValue(CI.getType()));
+ Context->getAllOnesValue(CI.getType()),
+ Context->getNullValue(CI.getType()));
// See if the value being truncated is already sign extended. If so, just
// eliminate the trunc/sext pair.
- if (getOpcode(Src) == Instruction::Trunc) {
+ if (Operator::getOpcode(Src) == Instruction::Trunc) {
Value *Op = cast<User>(Src)->getOperand(0);
unsigned OpBits = Op->getType()->getScalarSizeInBits();
unsigned MidBits = Src->getType()->getScalarSizeInBits();
Value *A = 0;
ConstantInt *BA = 0, *CA = 0;
if (match(Src, m_AShr(m_Shl(m_Value(A), m_ConstantInt(BA)),
- m_ConstantInt(CA))) &&
+ m_ConstantInt(CA)), *Context) &&
BA == CA && isa<TruncInst>(A)) {
Value *I = cast<TruncInst>(A)->getOperand(0);
if (I->getType() == CI.getType()) {
/// FitsInFPType - Return a Constant* for the specified FP constant if it fits
/// in the specified FP type without changing its value.
-static Constant *FitsInFPType(ConstantFP *CFP, const fltSemantics &Sem) {
+static Constant *FitsInFPType(ConstantFP *CFP, const fltSemantics &Sem,
+ LLVMContext *Context) {
bool losesInfo;
APFloat F = CFP->getValueAPF();
(void)F.convert(Sem, APFloat::rmNearestTiesToEven, &losesInfo);
if (!losesInfo)
- return ConstantFP::get(F);
+ return Context->getConstantFP(F);
return 0;
}
/// LookThroughFPExtensions - If this is an fp extension instruction, look
/// through it until we get the source value.
-static Value *LookThroughFPExtensions(Value *V) {
+static Value *LookThroughFPExtensions(Value *V, LLVMContext *Context) {
if (Instruction *I = dyn_cast<Instruction>(V))
if (I->getOpcode() == Instruction::FPExt)
- return LookThroughFPExtensions(I->getOperand(0));
+ return LookThroughFPExtensions(I->getOperand(0), Context);
// If this value is a constant, return the constant in the smallest FP type
// that can accurately represent it. This allows us to turn
if (CFP->getType() == Type::PPC_FP128Ty)
return V; // No constant folding of this.
// See if the value can be truncated to float and then reextended.
- if (Value *V = FitsInFPType(CFP, APFloat::IEEEsingle))
+ if (Value *V = FitsInFPType(CFP, APFloat::IEEEsingle, Context))
return V;
if (CFP->getType() == Type::DoubleTy)
return V; // Won't shrink.
- if (Value *V = FitsInFPType(CFP, APFloat::IEEEdouble))
+ if (Value *V = FitsInFPType(CFP, APFloat::IEEEdouble, Context))
return V;
// Don't try to shrink to various long double types.
}
case Instruction::FDiv:
case Instruction::FRem:
const Type *SrcTy = OpI->getType();
- Value *LHSTrunc = LookThroughFPExtensions(OpI->getOperand(0));
- Value *RHSTrunc = LookThroughFPExtensions(OpI->getOperand(1));
+ Value *LHSTrunc = LookThroughFPExtensions(OpI->getOperand(0), Context);
+ Value *RHSTrunc = LookThroughFPExtensions(OpI->getOperand(1), Context);
if (LHSTrunc->getType() != SrcTy &&
RHSTrunc->getType() != SrcTy) {
unsigned DstSize = CI.getType()->getScalarSizeInBits();
// trunc to be exposed to other transforms. Don't do this for extending
// ptrtoint's, because we don't know if the target sign or zero extends its
// pointers.
- if (CI.getType()->getScalarSizeInBits() < TD->getPointerSizeInBits()) {
+ if (TD &&
+ CI.getType()->getScalarSizeInBits() < TD->getPointerSizeInBits()) {
Value *P = InsertNewInstBefore(new PtrToIntInst(CI.getOperand(0),
TD->getIntPtrType(),
"tmp"), CI);
// allows the trunc to be exposed to other transforms. Don't do this for
// extending inttoptr's, because we don't know if the target sign or zero
// extends to pointers.
- if (CI.getOperand(0)->getType()->getScalarSizeInBits() >
+ if (TD &&
+ CI.getOperand(0)->getType()->getScalarSizeInBits() >
TD->getPointerSizeInBits()) {
Value *P = InsertNewInstBefore(new TruncInst(CI.getOperand(0),
TD->getIntPtrType(),
if (Instruction *I = commonCastTransforms(CI))
return I;
-
- const Type *DestPointee = cast<PointerType>(CI.getType())->getElementType();
- if (!DestPointee->isSized()) return 0;
-
- // If this is inttoptr(add (ptrtoint x), cst), try to turn this into a GEP.
- ConstantInt *Cst;
- Value *X;
- if (match(CI.getOperand(0), m_Add(m_Cast<PtrToIntInst>(m_Value(X)),
- m_ConstantInt(Cst)))) {
- // If the source and destination operands have the same type, see if this
- // is a single-index GEP.
- if (X->getType() == CI.getType()) {
- // Get the size of the pointee type.
- uint64_t Size = TD->getTypeAllocSize(DestPointee);
-
- // Convert the constant to intptr type.
- APInt Offset = Cst->getValue();
- Offset.sextOrTrunc(TD->getPointerSizeInBits());
-
- // If Offset is evenly divisible by Size, we can do this xform.
- if (Size && !APIntOps::srem(Offset, APInt(Offset.getBitWidth(), Size))){
- Offset = APIntOps::sdiv(Offset, APInt(Offset.getBitWidth(), Size));
- return GetElementPtrInst::Create(X, ConstantInt::get(Offset));
- }
- }
- // TODO: Could handle other cases, e.g. where add is indexing into field of
- // struct etc.
- } else if (CI.getOperand(0)->hasOneUse() &&
- match(CI.getOperand(0), m_Add(m_Value(X), m_ConstantInt(Cst)))) {
- // Otherwise, if this is inttoptr(add x, cst), try to turn this into an
- // "inttoptr+GEP" instead of "add+intptr".
-
- // Get the size of the pointee type.
- uint64_t Size = TD->getTypeAllocSize(DestPointee);
-
- // Convert the constant to intptr type.
- APInt Offset = Cst->getValue();
- Offset.sextOrTrunc(TD->getPointerSizeInBits());
-
- // If Offset is evenly divisible by Size, we can do this xform.
- if (Size && !APIntOps::srem(Offset, APInt(Offset.getBitWidth(), Size))){
- Offset = APIntOps::sdiv(Offset, APInt(Offset.getBitWidth(), Size));
-
- Instruction *P = InsertNewInstBefore(new IntToPtrInst(X, CI.getType(),
- "tmp"), CI);
- return GetElementPtrInst::Create(P, ConstantInt::get(Offset), "tmp");
- }
- }
+
return 0;
}
const Type *SrcTy = Src->getType();
const Type *DestTy = CI.getType();
- if (SrcTy->isInteger() && DestTy->isInteger()) {
- if (Instruction *Result = commonIntCastTransforms(CI))
- return Result;
- } else if (isa<PointerType>(SrcTy)) {
+ if (isa<PointerType>(SrcTy)) {
if (Instruction *I = commonPointerCastTransforms(CI))
return I;
} else {
// If the source and destination are pointers, and this cast is equivalent
// to a getelementptr X, 0, 0, 0... turn it into the appropriate gep.
// This can enhance SROA and other transforms that want type-safe pointers.
- Constant *ZeroUInt = Constant::getNullValue(Type::Int32Ty);
+ Constant *ZeroUInt = Context->getNullValue(Type::Int32Ty);
unsigned NumZeros = 0;
while (SrcElTy != DstElTy &&
isa<CompositeType>(SrcElTy) && !isa<PointerType>(SrcElTy) &&
}
}
+ if (const VectorType *DestVTy = dyn_cast<VectorType>(DestTy)) {
+ if (DestVTy->getNumElements() == 1) {
+ if (!isa<VectorType>(SrcTy)) {
+ Value *Elem = InsertCastBefore(Instruction::BitCast, Src,
+ DestVTy->getElementType(), CI);
+ return InsertElementInst::Create(Context->getUndef(DestTy), Elem,
+ Context->getNullValue(Type::Int32Ty));
+ }
+ // FIXME: Canonicalize bitcast(insertelement) -> insertelement(bitcast)
+ }
+ }
+
+ if (const VectorType *SrcVTy = dyn_cast<VectorType>(SrcTy)) {
+ if (SrcVTy->getNumElements() == 1) {
+ if (!isa<VectorType>(DestTy)) {
+ Instruction *Elem =
+ new ExtractElementInst(Src, Context->getNullValue(Type::Int32Ty));
+ InsertNewInstBefore(Elem, CI);
+ return CastInst::Create(Instruction::BitCast, Elem, DestTy);
+ }
+ }
+ }
+
if (ShuffleVectorInst *SVI = dyn_cast<ShuffleVectorInst>(Src)) {
if (SVI->hasOneUse()) {
// Okay, we have (bitconvert (shuffle ..)). Check to see if this is
/// GetSelectFoldableConstant - For the same transformation as the previous
/// function, return the identity constant that goes into the select.
-static Constant *GetSelectFoldableConstant(Instruction *I) {
+static Constant *GetSelectFoldableConstant(Instruction *I,
+ LLVMContext *Context) {
switch (I->getOpcode()) {
- default: assert(0 && "This cannot happen!"); abort();
+ default: llvm_unreachable("This cannot happen!");
case Instruction::Add:
case Instruction::Sub:
case Instruction::Or:
case Instruction::Shl:
case Instruction::LShr:
case Instruction::AShr:
- return Constant::getNullValue(I->getType());
+ return Context->getNullValue(I->getType());
case Instruction::And:
- return Constant::getAllOnesValue(I->getType());
+ return Context->getAllOnesValue(I->getType());
case Instruction::Mul:
return ConstantInt::get(I->getType(), 1);
}
else
return BinaryOperator::Create(BO->getOpcode(), NewSI, MatchOp);
}
- assert(0 && "Shouldn't get here");
+ llvm_unreachable("Shouldn't get here");
return 0;
}
}
if (OpToFold) {
- Constant *C = GetSelectFoldableConstant(TVI);
+ Constant *C = GetSelectFoldableConstant(TVI, Context);
Value *OOp = TVI->getOperand(2-OpToFold);
// Avoid creating select between 2 constants unless it's selecting
// between 0 and 1.
NewSel->takeName(TVI);
if (BinaryOperator *BO = dyn_cast<BinaryOperator>(TVI))
return BinaryOperator::Create(BO->getOpcode(), FalseVal, NewSel);
- assert(0 && "Unknown instruction!!");
+ llvm_unreachable("Unknown instruction!!");
}
}
}
}
if (OpToFold) {
- Constant *C = GetSelectFoldableConstant(FVI);
+ Constant *C = GetSelectFoldableConstant(FVI, Context);
Value *OOp = FVI->getOperand(2-OpToFold);
// Avoid creating select between 2 constants unless it's selecting
// between 0 and 1.
NewSel->takeName(FVI);
if (BinaryOperator *BO = dyn_cast<BinaryOperator>(FVI))
return BinaryOperator::Create(BO->getOpcode(), TrueVal, NewSel);
- assert(0 && "Unknown instruction!!");
+ llvm_unreachable("Unknown instruction!!");
}
}
}
if (CI->isMinValue(Pred == ICmpInst::ICMP_SLT))
return ReplaceInstUsesWith(SI, FalseVal);
// X < C ? X : C-1 --> X > C-1 ? C-1 : X
- Constant *AdjustedRHS = SubOne(CI);
+ Constant *AdjustedRHS = SubOne(CI, Context);
if ((CmpLHS == TrueVal && AdjustedRHS == FalseVal) ||
(CmpLHS == FalseVal && AdjustedRHS == TrueVal)) {
Pred = ICmpInst::getSwappedPredicate(Pred);
if (CI->isMaxValue(Pred == ICmpInst::ICMP_SGT))
return ReplaceInstUsesWith(SI, FalseVal);
// X > C ? X : C+1 --> X < C+1 ? C+1 : X
- Constant *AdjustedRHS = AddOne(CI);
+ Constant *AdjustedRHS = AddOne(CI, Context);
if ((CmpLHS == TrueVal && AdjustedRHS == FalseVal) ||
(CmpLHS == FalseVal && AdjustedRHS == TrueVal)) {
Pred = ICmpInst::getSwappedPredicate(Pred);
// (x <s 0) ? -1 : 0 -> ashr x, 31 -> all ones if signed
// (x >s -1) ? -1 : 0 -> ashr x, 31 -> all ones if not signed
CmpInst::Predicate Pred = CmpInst::BAD_ICMP_PREDICATE;
- if (match(TrueVal, m_ConstantInt<-1>()) &&
- match(FalseVal, m_ConstantInt<0>()))
+ if (match(TrueVal, m_ConstantInt<-1>(), *Context) &&
+ match(FalseVal, m_ConstantInt<0>(), *Context))
Pred = ICI->getPredicate();
- else if (match(TrueVal, m_ConstantInt<0>()) &&
- match(FalseVal, m_ConstantInt<-1>()))
+ else if (match(TrueVal, m_ConstantInt<0>(), *Context) &&
+ match(FalseVal, m_ConstantInt<-1>(), *Context))
Pred = CmpInst::getInversePredicate(ICI->getPredicate());
if (Pred != CmpInst::BAD_ICMP_PREDICATE) {
true/*SExt*/, "tmp", ICI);
if (Pred == ICmpInst::ICMP_SGT)
- In = InsertNewInstBefore(BinaryOperator::CreateNot(In,
+ In = InsertNewInstBefore(BinaryOperator::CreateNot(*Context, In,
In->getName()+".not"), *ICI);
return ReplaceInstUsesWith(SI, In);
} else {
// Change: A = select B, false, C --> A = and !B, C
Value *NotCond =
- InsertNewInstBefore(BinaryOperator::CreateNot(CondVal,
+ InsertNewInstBefore(BinaryOperator::CreateNot(*Context, CondVal,
"not."+CondVal->getName()), SI);
return BinaryOperator::CreateAnd(NotCond, FalseVal);
}
} else {
// Change: A = select B, C, true --> A = or !B, C
Value *NotCond =
- InsertNewInstBefore(BinaryOperator::CreateNot(CondVal,
+ InsertNewInstBefore(BinaryOperator::CreateNot(*Context, CondVal,
"not."+CondVal->getName()), SI);
return BinaryOperator::CreateOr(NotCond, TrueVal);
}
} else if (TrueValC->isZero() && FalseValC->getValue() == 1) {
// select C, 0, 1 -> zext !C to int
Value *NotCond =
- InsertNewInstBefore(BinaryOperator::CreateNot(CondVal,
+ InsertNewInstBefore(BinaryOperator::CreateNot(*Context, CondVal,
"not."+CondVal->getName()), SI);
return CastInst::Create(Instruction::ZExt, NotCond, SI.getType());
}
if (ICmpInst *IC = dyn_cast<ICmpInst>(SI.getCondition())) {
-
- // (x <s 0) ? -1 : 0 -> ashr x, 31
- if (TrueValC->isAllOnesValue() && FalseValC->isZero())
- if (ConstantInt *CmpCst = dyn_cast<ConstantInt>(IC->getOperand(1))) {
- if (IC->getPredicate() == ICmpInst::ICMP_SLT && CmpCst->isZero()) {
- // The comparison constant and the result are not neccessarily the
- // same width. Make an all-ones value by inserting a AShr.
- Value *X = IC->getOperand(0);
- uint32_t Bits = X->getType()->getScalarSizeInBits();
- Constant *ShAmt = ConstantInt::get(X->getType(), Bits-1);
- Instruction *SRA = BinaryOperator::Create(Instruction::AShr, X,
- ShAmt, "ones");
- InsertNewInstBefore(SRA, SI);
-
- // Then cast to the appropriate width.
- return CastInst::CreateIntegerCast(SRA, SI.getType(), true);
- }
- }
-
-
// If one of the constants is zero (we know they can't both be) and we
// have an icmp instruction with zero, and we have an 'and' with the
// non-constant value, eliminate this whole mess. This corresponds to
// select C, (add X, Y), (sub X, Z)
Value *NegVal; // Compute -Z
if (Constant *C = dyn_cast<Constant>(SubOp->getOperand(1))) {
- NegVal = ConstantExpr::getNeg(C);
+ NegVal = Context->getConstantExprNeg(C);
} else {
NegVal = InsertNewInstBefore(
- BinaryOperator::CreateNeg(SubOp->getOperand(1), "tmp"), SI);
+ BinaryOperator::CreateNeg(*Context, SubOp->getOperand(1),
+ "tmp"), SI);
}
Value *NewTrueOp = OtherAddOp;
User *U = dyn_cast<User>(V);
if (!U) return Align;
- switch (getOpcode(U)) {
+ switch (Operator::getOpcode(U)) {
default: break;
case Instruction::BitCast:
return EnforceKnownAlignment(U->getOperand(0), Align, PrefAlign);
unsigned CopyAlign = MI->getAlignment();
if (CopyAlign < MinAlign) {
- MI->setAlignment(MinAlign);
+ MI->setAlignment(ConstantInt::get(MI->getAlignmentType(),
+ MinAlign, false));
return MI;
}
return 0; // If not 1/2/4/8 bytes, exit.
// Use an integer load+store unless we can find something better.
- Type *NewPtrTy = PointerType::getUnqual(IntegerType::get(Size<<3));
+ Type *NewPtrTy =
+ Context->getPointerTypeUnqual(Context->getIntegerType(Size<<3));
// Memcpy forces the use of i8* for the source and destination. That means
// that if you're using memcpy to move one double around, you'll get a cast
// integer datatype.
if (Value *Op = getBitCastOperand(MI->getOperand(1))) {
const Type *SrcETy = cast<PointerType>(Op->getType())->getElementType();
- if (SrcETy->isSized() && TD->getTypeStoreSize(SrcETy) == Size) {
+ if (TD && SrcETy->isSized() && TD->getTypeStoreSize(SrcETy) == Size) {
// The SrcETy might be something like {{{double}}} or [1 x double]. Rip
// down through these levels if so.
while (!SrcETy->isSingleValueType()) {
}
if (SrcETy->isSingleValueType())
- NewPtrTy = PointerType::getUnqual(SrcETy);
+ NewPtrTy = Context->getPointerTypeUnqual(SrcETy);
}
}
InsertNewInstBefore(new StoreInst(L, Dest, false, DstAlign), *MI);
// Set the size of the copy to 0, it will be deleted on the next iteration.
- MI->setOperand(3, Constant::getNullValue(MemOpLength->getType()));
+ MI->setOperand(3, Context->getNullValue(MemOpLength->getType()));
return MI;
}
Instruction *InstCombiner::SimplifyMemSet(MemSetInst *MI) {
unsigned Alignment = GetOrEnforceKnownAlignment(MI->getDest());
if (MI->getAlignment() < Alignment) {
- MI->setAlignment(Alignment);
+ MI->setAlignment(ConstantInt::get(MI->getAlignmentType(),
+ Alignment, false));
return MI;
}
// memset(s,c,n) -> store s, c (for n=1,2,4,8)
if (Len <= 8 && isPowerOf2_32((uint32_t)Len)) {
- const Type *ITy = IntegerType::get(Len*8); // n=1 -> i8.
+ const Type *ITy = Context->getIntegerType(Len*8); // n=1 -> i8.
Value *Dest = MI->getDest();
- Dest = InsertBitCastBefore(Dest, PointerType::getUnqual(ITy), *MI);
+ Dest = InsertBitCastBefore(Dest, Context->getPointerTypeUnqual(ITy), *MI);
// Alignment 0 is identity for alignment 1 for memset, but not store.
if (Alignment == 0) Alignment = 1;
// Extract the fill value and store.
uint64_t Fill = FillC->getZExtValue()*0x0101010101010101ULL;
- InsertNewInstBefore(new StoreInst(ConstantInt::get(ITy, Fill), Dest, false,
- Alignment), *MI);
+ InsertNewInstBefore(new StoreInst(ConstantInt::get(ITy, Fill),
+ Dest, false, Alignment), *MI);
// Set the size of the copy to 0, it will be deleted on the next iteration.
- MI->setLength(Constant::getNullValue(LenC->getType()));
+ MI->setLength(Context->getNullValue(LenC->getType()));
return MI;
}
// Turn X86 loadups -> load if the pointer is known aligned.
if (GetOrEnforceKnownAlignment(II->getOperand(1), 16) >= 16) {
Value *Ptr = InsertBitCastBefore(II->getOperand(1),
- PointerType::getUnqual(II->getType()),
+ Context->getPointerTypeUnqual(II->getType()),
CI);
return new LoadInst(Ptr);
}
// Turn stvx -> store if the pointer is known aligned.
if (GetOrEnforceKnownAlignment(II->getOperand(2), 16) >= 16) {
const Type *OpPtrTy =
- PointerType::getUnqual(II->getOperand(1)->getType());
+ Context->getPointerTypeUnqual(II->getOperand(1)->getType());
Value *Ptr = InsertBitCastBefore(II->getOperand(2), OpPtrTy, CI);
return new StoreInst(II->getOperand(1), Ptr);
}
// Turn X86 storeu -> store if the pointer is known aligned.
if (GetOrEnforceKnownAlignment(II->getOperand(1), 16) >= 16) {
const Type *OpPtrTy =
- PointerType::getUnqual(II->getOperand(2)->getType());
+ Context->getPointerTypeUnqual(II->getOperand(2)->getType());
Value *Ptr = InsertBitCastBefore(II->getOperand(1), OpPtrTy, CI);
return new StoreInst(II->getOperand(2), Ptr);
}
// Cast the input vectors to byte vectors.
Value *Op0 =InsertBitCastBefore(II->getOperand(1),Mask->getType(),CI);
Value *Op1 =InsertBitCastBefore(II->getOperand(2),Mask->getType(),CI);
- Value *Result = UndefValue::get(Op0->getType());
+ Value *Result = Context->getUndef(Op0->getType());
// Only extract each element once.
Value *ExtractedElts[32];
if (ExtractedElts[Idx] == 0) {
Instruction *Elt =
- new ExtractElementInst(Idx < 16 ? Op0 : Op1, Idx&15, "tmp");
+ new ExtractElementInst(Idx < 16 ? Op0 : Op1,
+ ConstantInt::get(Type::Int32Ty, Idx&15, false), "tmp");
InsertNewInstBefore(Elt, CI);
ExtractedElts[Idx] = Elt;
}
// Insert this value into the result vector.
Result = InsertElementInst::Create(Result, ExtractedElts[Idx],
- i, "tmp");
+ ConstantInt::get(Type::Int32Ty, i, false),
+ "tmp");
InsertNewInstBefore(cast<Instruction>(Result), CI);
}
return CastInst::Create(Instruction::BitCast, Result, CI.getType());
const Type* DstTy = cast<PointerType>(CI->getType())->getElementType();
if (!SrcTy->isSized() || !DstTy->isSized())
return false;
- if (TD->getTypeAllocSize(SrcTy) != TD->getTypeAllocSize(DstTy))
+ if (!TD || TD->getTypeAllocSize(SrcTy) != TD->getTypeAllocSize(DstTy))
return false;
return true;
}
Instruction *OldCall = CS.getInstruction();
// If the call and callee calling conventions don't match, this call must
// be unreachable, as the call is undefined.
- new StoreInst(ConstantInt::getTrue(),
- UndefValue::get(PointerType::getUnqual(Type::Int1Ty)),
- OldCall);
+ new StoreInst(Context->getTrue(),
+ Context->getUndef(Context->getPointerTypeUnqual(Type::Int1Ty)),
+ OldCall);
if (!OldCall->use_empty())
- OldCall->replaceAllUsesWith(UndefValue::get(OldCall->getType()));
+ OldCall->replaceAllUsesWith(Context->getUndef(OldCall->getType()));
if (isa<CallInst>(OldCall)) // Not worth removing an invoke here.
return EraseInstFromFunction(*OldCall);
return 0;
// This instruction is not reachable, just remove it. We insert a store to
// undef so that we know that this code is not reachable, despite the fact
// that we can't modify the CFG here.
- new StoreInst(ConstantInt::getTrue(),
- UndefValue::get(PointerType::getUnqual(Type::Int1Ty)),
+ new StoreInst(Context->getTrue(),
+ Context->getUndef(Context->getPointerTypeUnqual(Type::Int1Ty)),
CS.getInstruction());
if (!CS.getInstruction()->use_empty())
CS.getInstruction()->
- replaceAllUsesWith(UndefValue::get(CS.getInstruction()->getType()));
+ replaceAllUsesWith(Context->getUndef(CS.getInstruction()->getType()));
if (InvokeInst *II = dyn_cast<InvokeInst>(CS.getInstruction())) {
// Don't break the CFG, insert a dummy cond branch.
BranchInst::Create(II->getNormalDest(), II->getUnwindDest(),
- ConstantInt::getTrue(), II);
+ Context->getTrue(), II);
}
return EraseInstFromFunction(*CS.getInstruction());
}
if (Callee->isDeclaration() &&
// Conversion is ok if changing from one pointer type to another or from
// a pointer to an integer of the same size.
- !((isa<PointerType>(OldRetTy) || OldRetTy == TD->getIntPtrType()) &&
- (isa<PointerType>(NewRetTy) || NewRetTy == TD->getIntPtrType())))
+ !((isa<PointerType>(OldRetTy) || !TD ||
+ OldRetTy == TD->getIntPtrType()) &&
+ (isa<PointerType>(NewRetTy) || !TD ||
+ NewRetTy == TD->getIntPtrType())))
return false; // Cannot transform this return value.
if (!Caller->use_empty() &&
// Converting from one pointer type to another or between a pointer and an
// integer of the same size is safe even if we do not have a body.
bool isConvertible = ActTy == ParamTy ||
- ((isa<PointerType>(ParamTy) || ParamTy == TD->getIntPtrType()) &&
- (isa<PointerType>(ActTy) || ActTy == TD->getIntPtrType()));
+ (
TD && ((isa<PointerType>(ParamTy) || ParamTy == TD->getIntPtrType()) &&
+ (isa<PointerType>(ActTy) || ActTy == TD->getIntPtrType())));
if (Callee->isDeclaration() && !isConvertible) return false;
}
// If the function takes more arguments than the call was taking, add them
// now...
for (unsigned i = NumCommonArgs; i != FT->getNumParams(); ++i)
- Args.push_back(Constant::getNullValue(FT->getParamType(i)));
+ Args.push_back(Context->getNullValue(FT->getParamType(i)));
// If we are removing arguments to the function, emit an obnoxious warning...
if (FT->getNumParams() < NumActualArgs) {
}
AddUsersToWorkList(*Caller);
} else {
- NV = UndefValue::get(Caller->getType());
+ NV = Context->getUndef(Caller->getType());
}
}
// Replace the trampoline call with a direct call. Let the generic
// code sort out any function type mismatches.
FunctionType *NewFTy =
- FunctionType::get(FTy->getReturnType(), NewTypes, FTy->isVarArg());
- Constant *NewCallee = NestF->getType() == PointerType::getUnqual(NewFTy) ?
- NestF : ConstantExpr::getBitCast(NestF, PointerType::getUnqual(NewFTy));
+ Context->getFunctionType(FTy->getReturnType(), NewTypes,
+ FTy->isVarArg());
+ Constant *NewCallee =
+ NestF->getType() == Context->getPointerTypeUnqual(NewFTy) ?
+ NestF : Context->getConstantExprBitCast(NestF,
+ Context->getPointerTypeUnqual(NewFTy));
const AttrListPtr &NewPAL = AttrListPtr::get(NewAttrs.begin(),NewAttrs.end());
Instruction *NewCaller;
// parameter, there is no need to adjust the argument list. Let the generic
// code sort out any function type mismatches.
Constant *NewCallee =
- NestF->getType() == PTy ? NestF : ConstantExpr::getBitCast(NestF, PTy);
+ NestF->getType() == PTy ? NestF :
+ Context->getConstantExprBitCast(NestF, PTy);
CS.setCalledFunction(NewCallee);
return CS.getInstruction();
}
if (BinaryOperator *BinOp = dyn_cast<BinaryOperator>(FirstInst))
return BinaryOperator::Create(BinOp->getOpcode(), LHSVal, RHSVal);
CmpInst *CIOp = cast<CmpInst>(FirstInst);
- return CmpInst::Create(CIOp->getOpcode(), CIOp->getPredicate(), LHSVal,
- RHSVal);
+ return CmpInst::Create(*Context, CIOp->getOpcode(), CIOp->getPredicate(),
+ LHSVal, RHSVal);
}
Instruction *InstCombiner::FoldPHIArgGEPIntoPHI(PHINode &PN) {
if (BinaryOperator *BinOp = dyn_cast<BinaryOperator>(FirstInst))
return BinaryOperator::Create(BinOp->getOpcode(), PhiVal, ConstantOp);
if (CmpInst *CIOp = dyn_cast<CmpInst>(FirstInst))
- return CmpInst::Create(CIOp->getOpcode(), CIOp->getPredicate(),
+ return CmpInst::Create(*Context, CIOp->getOpcode(), CIOp->getPredicate(),
PhiVal, ConstantOp);
assert(isa<LoadInst>(FirstInst) && "Unknown operation");
SmallPtrSet<PHINode*, 16> PotentiallyDeadPHIs;
PotentiallyDeadPHIs.insert(&PN);
if (DeadPHICycle(PU, PotentiallyDeadPHIs))
- return ReplaceInstUsesWith(PN, UndefValue::get(PN.getType()));
+ return ReplaceInstUsesWith(PN, Context->getUndef(PN.getType()));
}
// If this phi has a single use, and if that use just computes a value for
if (PHIUser->hasOneUse() &&
(isa<BinaryOperator>(PHIUser) || isa<GetElementPtrInst>(PHIUser)) &&
PHIUser->use_back() == &PN) {
- return ReplaceInstUsesWith(PN, UndefValue::get(PN.getType()));
+ return ReplaceInstUsesWith(PN, Context->getUndef(PN.getType()));
}
}
return ReplaceInstUsesWith(GEP, PtrOp);
if (isa<UndefValue>(GEP.getOperand(0)))
- return ReplaceInstUsesWith(GEP, UndefValue::get(GEP.getType()));
+ return ReplaceInstUsesWith(GEP, Context->getUndef(GEP.getType()));
bool HasZeroPointerIndex = false;
if (Constant *C = dyn_cast<Constant>(GEP.getOperand(1)))
gep_type_iterator GTI = gep_type_begin(GEP);
for (User::op_iterator i = GEP.op_begin() + 1, e = GEP.op_end();
i != e; ++i, ++GTI) {
- if (isa<SequentialType>(*GTI)) {
+ if (TD && isa<SequentialType>(*GTI)) {
if (CastInst *CI = dyn_cast<CastInst>(*i)) {
if (CI->getOpcode() == Instruction::ZExt ||
CI->getOpcode() == Instruction::SExt) {
Value *Op = *i;
if (TD->getTypeSizeInBits(Op->getType()) > TD->getPointerSizeInBits()) {
if (Constant *C = dyn_cast<Constant>(Op)) {
- *i = ConstantExpr::getTrunc(C, TD->getIntPtrType());
+ *i = Context->getConstantExprTrunc(C, TD->getIntPtrType());
MadeChange = true;
} else {
Op = InsertCastBefore(Instruction::Trunc, Op, TD->getIntPtrType(),
}
} else if (TD->getTypeSizeInBits(Op->getType()) < TD->getPointerSizeInBits()) {
if (Constant *C = dyn_cast<Constant>(Op)) {
- *i = ConstantExpr::getSExt(C, TD->getIntPtrType());
+ *i = Context->getConstantExprSExt(C, TD->getIntPtrType());
MadeChange = true;
} else {
Op = InsertCastBefore(Instruction::SExt, Op, TD->getIntPtrType(),
// With: T = long A+B; gep %P, T, ...
//
Value *Sum, *SO1 = SrcGEPOperands.back(), *GO1 = GEP.getOperand(1);
- if (SO1 == Constant::getNullValue(SO1->getType())) {
+ if (SO1 == Context->getNullValue(SO1->getType())) {
Sum = GO1;
- } else if (GO1 == Constant::getNullValue(GO1->getType())) {
+ } else if (GO1 == Context->getNullValue(GO1->getType())) {
Sum = SO1;
} else {
// If they aren't the same type, convert both to an integer of the
// target's pointer size.
if (SO1->getType() != GO1->getType()) {
if (Constant *SO1C = dyn_cast<Constant>(SO1)) {
- SO1 = ConstantExpr::getIntegerCast(SO1C, GO1->getType(), true);
+ SO1 =
+ Context->getConstantExprIntegerCast(SO1C, GO1->getType(), true);
} else if (Constant *GO1C = dyn_cast<Constant>(GO1)) {
- GO1 = ConstantExpr::getIntegerCast(GO1C, SO1->getType(), true);
- } else {
+ GO1 =
+ Context->getConstantExprIntegerCast(GO1C, SO1->getType(), true);
+ } else if (TD) {
unsigned PS = TD->getPointerSizeInBits();
if (TD->getTypeSizeInBits(SO1->getType()) == PS) {
// Convert GO1 to SO1's type.
}
}
if (isa<Constant>(SO1) && isa<Constant>(GO1))
- Sum = ConstantExpr::getAdd(cast<Constant>(SO1), cast<Constant>(GO1));
+ Sum = Context->getConstantExprAdd(cast<Constant>(SO1),
+ cast<Constant>(GO1));
else {
Sum = BinaryOperator::CreateAdd(SO1, GO1, PtrOp->getName()+".sum");
InsertNewInstBefore(cast<Instruction>(Sum), GEP);
Indices.push_back(cast<Constant>(*I));
if (I == E) { // If they are all constants...
- Constant *CE = ConstantExpr::getGetElementPtr(GV,
+ Constant *CE = Context->getConstantExprGetElementPtr(GV,
&Indices[0],Indices.size());
// Replace all uses of the GEP with the new constexpr...
// into: %t1 = getelementptr [2 x i32]* %str, i32 0, i32 %V; bitcast
const Type *SrcElTy = cast<PointerType>(X->getType())->getElementType();
const Type *ResElTy=cast<PointerType>(PtrOp->getType())->getElementType();
- if (isa<ArrayType>(SrcElTy) &&
+ if (
TD && isa<ArrayType>(SrcElTy) &&
TD->getTypeAllocSize(cast<ArrayType>(SrcElTy)->getElementType()) ==
TD->getTypeAllocSize(ResElTy)) {
Value *Idx[2];
- Idx[0] = Constant::getNullValue(Type::Int32Ty);
+ Idx[0] = Context->getNullValue(Type::Int32Ty);
Idx[1] = GEP.getOperand(1);
Value *V = InsertNewInstBefore(
GetElementPtrInst::Create(X, Idx, Idx + 2, GEP.getName()), GEP);
// (where tmp = 8*tmp2) into:
// getelementptr [100 x double]* %arr, i32 0, i32 %tmp2; bitcast
- if (isa<ArrayType>(SrcElTy) && ResElTy == Type::Int8Ty) {
+ if (
TD && isa<ArrayType>(SrcElTy) && ResElTy == Type::Int8Ty) {
uint64_t ArrayEltSize =
TD->getTypeAllocSize(cast<ArrayType>(SrcElTy)->getElementType());
ConstantInt *Scale = 0;
if (ArrayEltSize == 1) {
NewIdx = GEP.getOperand(1);
- Scale = ConstantInt::get(cast<IntegerType>(NewIdx->getType()), 1);
+ Scale =
+ ConstantInt::get(cast<IntegerType>(NewIdx->getType()), 1);
} else if (ConstantInt *CI = dyn_cast<ConstantInt>(GEP.getOperand(1))) {
NewIdx = ConstantInt::get(CI->getType(), 1);
Scale = CI;
Scale = ConstantInt::get(Scale->getType(),
Scale->getZExtValue() / ArrayEltSize);
if (Scale->getZExtValue() != 1) {
- Constant *C = ConstantExpr::getIntegerCast(Scale, NewIdx->getType(),
+ Constant *C =
+ Context->getConstantExprIntegerCast(Scale, NewIdx->getType(),
false /*ZExt*/);
Instruction *Sc = BinaryOperator::CreateMul(NewIdx, C, "idxscale");
NewIdx = InsertNewInstBefore(Sc, GEP);
// Insert the new GEP instruction.
Value *Idx[2];
- Idx[0] = Constant::getNullValue(Type::Int32Ty);
+ Idx[0] = Context->getNullValue(Type::Int32Ty);
Idx[1] = NewIdx;
Instruction *NewGEP =
GetElementPtrInst::Create(X, Idx, Idx + 2, GEP.getName());
/// into a gep of the original struct. This is important for SROA and alias
/// analysis of unions. If "A" is also a bitcast, wait for A/X to be merged.
if (BitCastInst *BCI = dyn_cast<BitCastInst>(PtrOp)) {
- if (!isa<BitCastInst>(BCI->getOperand(0)) && GEP.hasAllConstantIndices()) {
+ if (TD &&
+ !isa<BitCastInst>(BCI->getOperand(0)) && GEP.hasAllConstantIndices()) {
// Determine how much the GEP moves the pointer. We are guaranteed to get
// a constant back from EmitGEPOffset.
- ConstantInt *OffsetV = cast<ConstantInt>(EmitGEPOffset(&GEP, GEP, *this));
+ ConstantInt *OffsetV =
+ cast<ConstantInt>(EmitGEPOffset(&GEP, GEP, *this));
int64_t Offset = OffsetV->getSExtValue();
// If this GEP instruction doesn't move the pointer, just replace the GEP
SmallVector<Value*, 8> NewIndices;
const Type *InTy =
cast<PointerType>(BCI->getOperand(0)->getType())->getElementType();
- if (FindElementAtOffset(InTy, Offset, NewIndices, TD)) {
+ if (FindElementAtOffset(InTy, Offset, NewIndices, TD, Context)) {
Instruction *NGEP =
GetElementPtrInst::Create(BCI->getOperand(0), NewIndices.begin(),
NewIndices.end());
if (AI.isArrayAllocation()) { // Check C != 1
if (const ConstantInt *C = dyn_cast<ConstantInt>(AI.getArraySize())) {
const Type *NewTy =
- ArrayType::get(AI.getAllocatedType(), C->getZExtValue());
+ Context->getArrayType(AI.getAllocatedType(), C->getZExtValue());
AllocationInst *New = 0;
// Create and insert the replacement instruction...
// Now that I is pointing to the first non-allocation-inst in the block,
// insert our getelementptr instruction...
//
- Value *NullIdx = Constant::getNullValue(Type::Int32Ty);
+ Value *NullIdx = Context->getNullValue(Type::Int32Ty);
Value *Idx[2];
Idx[0] = NullIdx;
Idx[1] = NullIdx;
// allocation.
return ReplaceInstUsesWith(AI, V);
} else if (isa<UndefValue>(AI.getArraySize())) {
- return ReplaceInstUsesWith(AI, Constant::getNullValue(AI.getType()));
+ return ReplaceInstUsesWith(AI, Context->getNullValue(AI.getType()));
}
}
- if (isa<AllocaInst>(AI) && AI.getAllocatedType()->isSized()) {
+ if (
TD && isa<AllocaInst>(AI) && AI.getAllocatedType()->isSized()) {
// If alloca'ing a zero byte object, replace the alloca with a null pointer.
// Note that we only do this for alloca's, because malloc should allocate
// and return a unique pointer, even for a zero byte allocation.
if (TD->getTypeAllocSize(AI.getAllocatedType()) == 0)
- return ReplaceInstUsesWith(AI, Constant::getNullValue(AI.getType()));
+ return ReplaceInstUsesWith(AI, Context->getNullValue(AI.getType()));
// If the alignment is 0 (unspecified), assign it the preferred alignment.
if (AI.getAlignment() == 0)
// free undef -> unreachable.
if (isa<UndefValue>(Op)) {
// Insert a new store to null because we cannot modify the CFG here.
- new StoreInst(ConstantInt::getTrue(),
- UndefValue::get(PointerType::getUnqual(Type::Int1Ty)), &FI);
+ new StoreInst(Context->getTrue(),
+ Context->getUndef(Context->getPointerTypeUnqual(Type::Int1Ty)), &FI);
return EraseInstFromFunction(FI);
}
const TargetData *TD) {
User *CI = cast<User>(LI.getOperand(0));
Value *CastOp = CI->getOperand(0);
+ LLVMContext *Context = IC.getContext();
if (TD) {
if (ConstantExpr *CE = dyn_cast<ConstantExpr>(CI)) {
SingleChar = 0;
StrVal = (StrVal << 8) | SingleChar;
}
- Value *NL = ConstantInt::get(StrVal);
+ Value *NL = ConstantInt::get(*Context, StrVal);
return IC.ReplaceInstUsesWith(LI, NL);
}
}
if (Constant *CSrc = dyn_cast<Constant>(CastOp))
if (ASrcTy->getNumElements() != 0) {
Value *Idxs[2];
- Idxs[0] = Idxs[1] = Constant::getNullValue(Type::Int32Ty);
- CastOp = ConstantExpr::getGetElementPtr(CSrc, Idxs, 2);
+ Idxs[0] = Idxs[1] = Context->getNullValue(Type::Int32Ty);
+ CastOp = Context->getConstantExprGetElementPtr(CSrc, Idxs, 2);
SrcTy = cast<PointerType>(CastOp->getType());
SrcPTy = SrcTy->getElementType();
}
- if ((SrcPTy->isInteger() || isa<PointerType>(SrcPTy) ||
+ if (IC.getTargetData() &&
+ (SrcPTy->isInteger() || isa<PointerType>(SrcPTy) ||
isa<VectorType>(SrcPTy)) &&
// Do not allow turning this into a load of an integer, which is then
// casted to a pointer, this pessimizes pointer analysis a lot.
(isa<PointerType>(SrcPTy) == isa<PointerType>(LI.getType())) &&
- IC.getTargetData().getTypeSizeInBits(SrcPTy) ==
- IC.getTargetData().getTypeSizeInBits(DestPTy)) {
+ IC.getTargetData()->getTypeSizeInBits(SrcPTy) ==
+ IC.getTargetData()->getTypeSizeInBits(DestPTy)) {
// Okay, we are casting from one integer or pointer type to another of
// the same size. Instead of casting the pointer before the load, cast
Value *Op = LI.getOperand(0);
// Attempt to improve the alignment.
- unsigned KnownAlign =
- GetOrEnforceKnownAlignment(Op, TD->getPrefTypeAlignment(LI.getType()));
- if (KnownAlign >
- (LI.getAlignment() == 0 ? TD->getABITypeAlignment(LI.getType()) :
- LI.getAlignment()))
- LI.setAlignment(KnownAlign);
+ if (TD) {
+ unsigned KnownAlign =
+ GetOrEnforceKnownAlignment(Op, TD->getPrefTypeAlignment(LI.getType()));
+ if (KnownAlign >
+ (LI.getAlignment() == 0 ? TD->getABITypeAlignment(LI.getType()) :
+ LI.getAlignment()))
+ LI.setAlignment(KnownAlign);
+ }
// load (cast X) --> cast (load X) iff safe
if (isa<CastInst>(Op))
// that this code is not reachable. We do this instead of inserting
// an unreachable instruction directly because we cannot modify the
// CFG.
- new StoreInst(UndefValue::get(LI.getType()),
- Constant::getNullValue(Op->getType()), &LI);
- return ReplaceInstUsesWith(LI, UndefValue::get(LI.getType()));
+ new StoreInst(Context->getUndef(LI.getType()),
+ Context->getNullValue(Op->getType()), &LI);
+ return ReplaceInstUsesWith(LI, Context->getUndef(LI.getType()));
}
}
// Insert a new store to null instruction before the load to indicate that
// this code is not reachable. We do this instead of inserting an
// unreachable instruction directly because we cannot modify the CFG.
- new StoreInst(UndefValue::get(LI.getType()),
- Constant::getNullValue(Op->getType()), &LI);
- return ReplaceInstUsesWith(LI, UndefValue::get(LI.getType()));
+ new StoreInst(Context->getUndef(LI.getType()),
+ Context->getNullValue(Op->getType()), &LI);
+ return ReplaceInstUsesWith(LI, Context->getUndef(LI.getType()));
}
// Instcombine load (constant global) into the value loaded.
if (GlobalVariable *GV = dyn_cast<GlobalVariable>(CE->getOperand(0)))
if (GV->isConstant() && GV->hasDefinitiveInitializer())
if (Constant *V =
- ConstantFoldLoadThroughGEPConstantExpr(GV->getInitializer(), CE))
+ ConstantFoldLoadThroughGEPConstantExpr(GV->getInitializer(), CE,
+ *Context))
return ReplaceInstUsesWith(LI, V);
if (CE->getOperand(0)->isNullValue()) {
// Insert a new store to null instruction before the load to indicate
// that this code is not reachable. We do this instead of inserting
// an unreachable instruction directly because we cannot modify the
// CFG.
- new StoreInst(UndefValue::get(LI.getType()),
- Constant::getNullValue(Op->getType()), &LI);
- return ReplaceInstUsesWith(LI, UndefValue::get(LI.getType()));
+ new StoreInst(Context->getUndef(LI.getType()),
+ Context->getNullValue(Op->getType()), &LI);
+ return ReplaceInstUsesWith(LI, Context->getUndef(LI.getType()));
}
} else if (CE->isCast()) {
if (GlobalVariable *GV = dyn_cast<GlobalVariable>(Op->getUnderlyingObject())){
if (GV->isConstant() && GV->hasDefinitiveInitializer()) {
if (GV->getInitializer()->isNullValue())
- return ReplaceInstUsesWith(LI, Constant::getNullValue(LI.getType()));
+ return ReplaceInstUsesWith(LI, Context->getNullValue(LI.getType()));
else if (isa<UndefValue>(GV->getInitializer()))
- return ReplaceInstUsesWith(LI, UndefValue::get(LI.getType()));
+ return ReplaceInstUsesWith(LI, Context->getUndef(LI.getType()));
}
}
static Instruction *InstCombineStoreToCast(InstCombiner &IC, StoreInst &SI) {
User *CI = cast<User>(SI.getOperand(1));
Value *CastOp = CI->getOperand(0);
+ LLVMContext *Context = IC.getContext();
const Type *DestPTy = cast<PointerType>(CI->getType())->getElementType();
const PointerType *SrcTy = dyn_cast<PointerType>(CastOp->getType());
// constants.
if (isa<ArrayType>(SrcPTy) || isa<StructType>(SrcPTy)) {
// Index through pointer.
- Constant *Zero = Constant::getNullValue(Type::Int32Ty);
+ Constant *Zero = Context->getNullValue(Type::Int32Ty);
NewGEPIndices.push_back(Zero);
while (1) {
}
}
- SrcTy = PointerType::get(SrcPTy, SrcTy->getAddressSpace());
+ SrcTy = Context->getPointerType(SrcPTy, SrcTy->getAddressSpace());
}
if (!SrcPTy->isInteger() && !isa<PointerType>(SrcPTy))
// If the pointers point into different address spaces or if they point to
// values with different sizes, we can't do the transformation.
- if (SrcTy->getAddressSpace() !=
+ if (!IC.getTargetData() ||
+ SrcTy->getAddressSpace() !=
cast<PointerType>(CI->getType())->getAddressSpace() ||
- IC.getTargetData().getTypeSizeInBits(SrcPTy) !=
- IC.getTargetData().getTypeSizeInBits(DestPTy))
+ IC.getTargetData()->getTypeSizeInBits(SrcPTy) !=
+ IC.getTargetData()->getTypeSizeInBits(DestPTy))
return 0;
// Okay, we are casting from one integer or pointer type to another of
// emit a GEP to index into its first field.
if (!NewGEPIndices.empty()) {
if (Constant *C = dyn_cast<Constant>(CastOp))
- CastOp = ConstantExpr::getGetElementPtr(C, &NewGEPIndices[0],
+ CastOp = Context->getConstantExprGetElementPtr(C, &NewGEPIndices[0],
NewGEPIndices.size());
else
CastOp = IC.InsertNewInstBefore(
}
if (Constant *C = dyn_cast<Constant>(SIOp0))
- NewCast = ConstantExpr::getCast(opcode, C, CastDstTy);
+ NewCast = Context->getConstantExprCast(opcode, C, CastDstTy);
else
NewCast = IC.InsertNewInstBefore(
CastInst::Create(opcode, SIOp0, CastDstTy, SIOp0->getName()+".c"),
}
// Attempt to improve the alignment.
- unsigned KnownAlign =
- GetOrEnforceKnownAlignment(Ptr, TD->getPrefTypeAlignment(Val->getType()));
- if (KnownAlign >
- (SI.getAlignment() == 0 ? TD->getABITypeAlignment(Val->getType()) :
- SI.getAlignment()))
- SI.setAlignment(KnownAlign);
+ if (TD) {
+ unsigned KnownAlign =
+ GetOrEnforceKnownAlignment(Ptr, TD->getPrefTypeAlignment(Val->getType()));
+ if (KnownAlign >
+ (SI.getAlignment() == 0 ? TD->getABITypeAlignment(Val->getType()) :
+ SI.getAlignment()))
+ SI.setAlignment(KnownAlign);
+ }
// Do really simple DSE, to catch cases where there are several consecutive
// stores to the same location, separated by a few arithmetic operations. This
if (isa<ConstantPointerNull>(Ptr) &&
cast<PointerType>(Ptr->getType())->getAddressSpace() == 0) {
if (!isa<UndefValue>(Val)) {
- SI.setOperand(0, UndefValue::get(Val->getType()));
+ SI.setOperand(0, Context->getUndef(Val->getType()));
if (Instruction *U = dyn_cast<Instruction>(Val))
AddToWorkList(U); // Dropped a use.
++NumCombined;
Value *X = 0;
BasicBlock *TrueDest;
BasicBlock *FalseDest;
- if (match(&BI, m_Br(m_Not(m_Value(X)), TrueDest, FalseDest)) &&
+ if (match(&BI, m_Br(m_Not(m_Value(X)), TrueDest, FalseDest), *Context) &&
!isa<Constant>(X)) {
// Swap Destinations and condition...
BI.setCondition(X);
// Cannonicalize fcmp_one -> fcmp_oeq
FCmpInst::Predicate FPred; Value *Y;
if (match(&BI, m_Br(m_FCmp(FPred, m_Value(X), m_Value(Y)),
- TrueDest, FalseDest)))
+ TrueDest, FalseDest), *Context))
if ((FPred == FCmpInst::FCMP_ONE || FPred == FCmpInst::FCMP_OLE ||
FPred == FCmpInst::FCMP_OGE) && BI.getCondition()->hasOneUse()) {
FCmpInst *I = cast<FCmpInst>(BI.getCondition());
FCmpInst::Predicate NewPred = FCmpInst::getInversePredicate(FPred);
- Instruction *NewSCC = new FCmpInst(NewPred, X, Y, "", I);
+ Instruction *NewSCC = new FCmpInst(I, NewPred, X, Y, "");
NewSCC->takeName(I);
// Swap Destinations and condition...
BI.setCondition(NewSCC);
// Cannonicalize icmp_ne -> icmp_eq
ICmpInst::Predicate IPred;
if (match(&BI, m_Br(m_ICmp(IPred, m_Value(X), m_Value(Y)),
- TrueDest, FalseDest)))
+ TrueDest, FalseDest), *Context))
if ((IPred == ICmpInst::ICMP_NE || IPred == ICmpInst::ICMP_ULE ||
IPred == ICmpInst::ICMP_SLE || IPred == ICmpInst::ICMP_UGE ||
IPred == ICmpInst::ICMP_SGE) && BI.getCondition()->hasOneUse()) {
ICmpInst *I = cast<ICmpInst>(BI.getCondition());
ICmpInst::Predicate NewPred = ICmpInst::getInversePredicate(IPred);
- Instruction *NewSCC = new ICmpInst(NewPred, X, Y, "", I);
+ Instruction *NewSCC = new ICmpInst(I, NewPred, X, Y, "");
NewSCC->takeName(I);
// Swap Destinations and condition...
BI.setCondition(NewSCC);
if (ConstantInt *AddRHS = dyn_cast<ConstantInt>(I->getOperand(1))) {
// change 'switch (X+4) case 1:' into 'switch (X) case -3'
for (unsigned i = 2, e = SI.getNumOperands(); i != e; i += 2)
- SI.setOperand(i,ConstantExpr::getSub(cast<Constant>(SI.getOperand(i)),
+ SI.setOperand(i,
+ Context->getConstantExprSub(cast<Constant>(SI.getOperand(i)),
AddRHS));
SI.setOperand(0, I->getOperand(0));
AddToWorkList(I);
if (Constant *C = dyn_cast<Constant>(Agg)) {
if (isa<UndefValue>(C))
- return ReplaceInstUsesWith(EV, UndefValue::get(EV.getType()));
+ return ReplaceInstUsesWith(EV, Context->getUndef(EV.getType()));
if (isa<ConstantAggregateZero>(C))
- return ReplaceInstUsesWith(EV, Constant::getNullValue(EV.getType()));
+ return ReplaceInstUsesWith(EV, Context->getNullValue(EV.getType()));
if (isa<ConstantArray>(C) || isa<ConstantStruct>(C)) {
// Extract the element indexed by the first index out of the constant
/// FindScalarElement - Given a vector and an element number, see if the scalar
/// value is already around as a register, for example if it were inserted then
/// extracted from the vector.
-static Value *FindScalarElement(Value *V, unsigned EltNo) {
+static Value *FindScalarElement(Value *V, unsigned EltNo,
+ LLVMContext *Context) {
assert(isa<VectorType>(V->getType()) && "Not looking at a vector?");
const VectorType *PTy = cast<VectorType>(V->getType());
unsigned Width = PTy->getNumElements();
if (EltNo >= Width) // Out of range access.
- return UndefValue::get(PTy->getElementType());
+ return Context->getUndef(PTy->getElementType());
if (isa<UndefValue>(V))
- return UndefValue::get(PTy->getElementType());
+ return Context->getUndef(PTy->getElementType());
else if (isa<ConstantAggregateZero>(V))
- return Constant::getNullValue(PTy->getElementType());
+ return Context->getNullValue(PTy->getElementType());
else if (ConstantVector *CP = dyn_cast<ConstantVector>(V))
return CP->getOperand(EltNo);
else if (InsertElementInst *III = dyn_cast<InsertElementInst>(V)) {
// Otherwise, the insertelement doesn't modify the value, recurse on its
// vector input.
- return FindScalarElement(III->getOperand(0), EltNo);
+ return FindScalarElement(III->getOperand(0), EltNo, Context);
} else if (ShuffleVectorInst *SVI = dyn_cast<ShuffleVectorInst>(V)) {
unsigned LHSWidth =
cast<VectorType>(SVI->getOperand(0)->getType())->getNumElements();
unsigned InEl = getShuffleMask(SVI)[EltNo];
if (InEl < LHSWidth)
- return FindScalarElement(SVI->getOperand(0), InEl);
+ return FindScalarElement(SVI->getOperand(0), InEl, Context);
else if (InEl < LHSWidth*2)
- return FindScalarElement(SVI->getOperand(1), InEl - LHSWidth);
+ return FindScalarElement(SVI->getOperand(1), InEl - LHSWidth, Context);
else
- return UndefValue::get(PTy->getElementType());
+ return Context->getUndef(PTy->getElementType());
}
// Otherwise, we don't know.
Instruction *InstCombiner::visitExtractElementInst(ExtractElementInst &EI) {
// If vector val is undef, replace extract with scalar undef.
if (isa<UndefValue>(EI.getOperand(0)))
- return ReplaceInstUsesWith(EI, UndefValue::get(EI.getType()));
+ return ReplaceInstUsesWith(EI, Context->getUndef(EI.getType()));
// If vector val is constant 0, replace extract with scalar 0.
if (isa<ConstantAggregateZero>(EI.getOperand(0)))
- return ReplaceInstUsesWith(EI, Constant::getNullValue(EI.getType()));
+ return ReplaceInstUsesWith(EI, Context->getNullValue(EI.getType()));
if (ConstantVector *C = dyn_cast<ConstantVector>(EI.getOperand(0))) {
// If vector val is constant with all elements the same, replace EI with
// If this is extracting an invalid index, turn this into undef, to avoid
// crashing the code below.
if (IndexVal >= VectorWidth)
- return ReplaceInstUsesWith(EI, UndefValue::get(EI.getType()));
+ return ReplaceInstUsesWith(EI, Context->getUndef(EI.getType()));
// This instruction only demands the single element from the input vector.
// If the input vector has a single use, simplify it based on this use
}
}
- if (Value *Elt = FindScalarElement(EI.getOperand(0), IndexVal))
+ if (Value *Elt = FindScalarElement(EI.getOperand(0), IndexVal, Context))
return ReplaceInstUsesWith(EI, Elt);
// If the this extractelement is directly using a bitcast from a vector of
if (const VectorType *VT =
dyn_cast<VectorType>(BCI->getOperand(0)->getType()))
if (VT->getNumElements() == VectorWidth)
- if (Value *Elt = FindScalarElement(BCI->getOperand(0), IndexVal))
+ if (Value *Elt = FindScalarElement(BCI->getOperand(0),
+ IndexVal, Context))
return new BitCastInst(Elt, EI.getType());
}
}
unsigned AS =
cast<PointerType>(I->getOperand(0)->getType())->getAddressSpace();
Value *Ptr = InsertBitCastBefore(I->getOperand(0),
- PointerType::get(EI.getType(), AS),EI);
+ Context->getPointerType(EI.getType(), AS),EI);
GetElementPtrInst *GEP =
GetElementPtrInst::Create(Ptr, EI.getOperand(1), I->getName()+".gep");
InsertNewInstBefore(GEP, EI);
SrcIdx -= LHSWidth;
Src = SVI->getOperand(1);
} else {
- return ReplaceInstUsesWith(EI, UndefValue::get(EI.getType()));
+ return ReplaceInstUsesWith(EI, Context->getUndef(EI.getType()));
}
- return new ExtractElementInst(Src, SrcIdx);
+ return new ExtractElementInst(Src,
+ ConstantInt::get(Type::Int32Ty, SrcIdx, false));
}
}
+ // FIXME: Canonicalize extractelement(bitcast) -> bitcast(extractelement)
}
return 0;
}
/// elements from either LHS or RHS, return the shuffle mask and true.
/// Otherwise, return false.
static bool CollectSingleShuffleElements(Value *V, Value *LHS, Value *RHS,
- std::vector<Constant*> &Mask) {
+ std::vector<Constant*> &Mask,
+ LLVMContext *Context) {
assert(V->getType() == LHS->getType() && V->getType() == RHS->getType() &&
"Invalid CollectSingleShuffleElements");
unsigned NumElts = cast<VectorType>(V->getType())->getNumElements();
if (isa<UndefValue>(V)) {
- Mask.assign(NumElts, UndefValue::get(Type::Int32Ty));
+ Mask.assign(NumElts, Context->getUndef(Type::Int32Ty));
return true;
} else if (V == LHS) {
for (unsigned i = 0; i != NumElts; ++i)
if (isa<UndefValue>(ScalarOp)) { // inserting undef into vector.
// Okay, we can handle this if the vector we are insertinting into is
// transitively ok.
- if (CollectSingleShuffleElements(VecOp, LHS, RHS, Mask)) {
+ if (CollectSingleShuffleElements(VecOp, LHS, RHS, Mask, Context)) {
// If so, update the mask to reflect the inserted undef.
- Mask[InsertedIdx] = UndefValue::get(Type::Int32Ty);
+ Mask[InsertedIdx] = Context->getUndef(Type::Int32Ty);
return true;
}
} else if (ExtractElementInst *EI = dyn_cast<ExtractElementInst>(ScalarOp)){
if (EI->getOperand(0) == LHS || EI->getOperand(0) == RHS) {
// Okay, we can handle this if the vector we are insertinting into is
// transitively ok.
- if (CollectSingleShuffleElements(VecOp, LHS, RHS, Mask)) {
+ if (CollectSingleShuffleElements(VecOp, LHS, RHS, Mask, Context)) {
// If so, update the mask to reflect the inserted value.
if (EI->getOperand(0) == LHS) {
Mask[InsertedIdx % NumElts] =
/// RHS of the shuffle instruction, if it is not null. Return a shuffle mask
/// that computes V and the LHS value of the shuffle.
static Value *CollectShuffleElements(Value *V, std::vector<Constant*> &Mask,
- Value *&RHS) {
+ Value *&RHS, LLVMContext *Context) {
assert(isa<VectorType>(V->getType()) &&
(RHS == 0 || V->getType() == RHS->getType()) &&
"Invalid shuffle!");
unsigned NumElts = cast<VectorType>(V->getType())->getNumElements();
if (isa<UndefValue>(V)) {
- Mask.assign(NumElts, UndefValue::get(Type::Int32Ty));
+ Mask.assign(NumElts, Context->getUndef(Type::Int32Ty));
return V;
} else if (isa<ConstantAggregateZero>(V)) {
Mask.assign(NumElts, ConstantInt::get(Type::Int32Ty, 0));
// otherwise we'd end up with a shuffle of three inputs.
if (EI->getOperand(0) == RHS || RHS == 0) {
RHS = EI->getOperand(0);
- Value *V = CollectShuffleElements(VecOp, Mask, RHS);
+ Value *V = CollectShuffleElements(VecOp, Mask, RHS, Context);
Mask[InsertedIdx % NumElts] =
ConstantInt::get(Type::Int32Ty, NumElts+ExtractedIdx);
return V;
}
if (VecOp == RHS) {
- Value *V = CollectShuffleElements(EI->getOperand(0), Mask, RHS);
+ Value *V = CollectShuffleElements(EI->getOperand(0), Mask,
+ RHS, Context);
// Everything but the extracted element is replaced with the RHS.
for (unsigned i = 0; i != NumElts; ++i) {
if (i != InsertedIdx)
// If this insertelement is a chain that comes from exactly these two
// vectors, return the vector and the effective shuffle.
- if (CollectSingleShuffleElements(IEI, EI->getOperand(0), RHS, Mask))
+ if (CollectSingleShuffleElements(IEI, EI->getOperand(0), RHS, Mask,
+ Context))
return EI->getOperand(0);
}
return ReplaceInstUsesWith(IE, VecOp);
if (InsertedIdx >= NumVectorElts) // Out of range insert.
- return ReplaceInstUsesWith(IE, UndefValue::get(IE.getType()));
+ return ReplaceInstUsesWith(IE, Context->getUndef(IE.getType()));
// If we are extracting a value from a vector, then inserting it right
// back into the same place, just use the input vector.
// Build a new shuffle mask.
std::vector<Constant*> Mask;
if (isa<UndefValue>(VecOp))
- Mask.assign(NumVectorElts, UndefValue::get(Type::Int32Ty));
+ Mask.assign(NumVectorElts, Context->getUndef(Type::Int32Ty));
else {
assert(isa<ConstantAggregateZero>(VecOp) && "Unknown thing");
Mask.assign(NumVectorElts, ConstantInt::get(Type::Int32Ty,
NumVectorElts));
}
- Mask[InsertedIdx] = ConstantInt::get(Type::Int32Ty, ExtractedIdx);
+ Mask[InsertedIdx] =
+ ConstantInt::get(Type::Int32Ty, ExtractedIdx);
return new ShuffleVectorInst(EI->getOperand(0), VecOp,
- ConstantVector::get(Mask));
+ Context->getConstantVector(Mask));
}
// If this insertelement isn't used by some other insertelement, turn it
if (!IE.hasOneUse() || !isa<InsertElementInst>(IE.use_back())) {
std::vector<Constant*> Mask;
Value *RHS = 0;
- Value *LHS = CollectShuffleElements(&IE, Mask, RHS);
- if (RHS == 0) RHS = UndefValue::get(LHS->getType());
+ Value *LHS = CollectShuffleElements(&IE, Mask, RHS, Context);
+ if (RHS == 0) RHS = Context->getUndef(LHS->getType());
// We now have a shuffle of LHS, RHS, Mask.
- return new ShuffleVectorInst(LHS, RHS, ConstantVector::get(Mask));
+ return new ShuffleVectorInst(LHS, RHS,
+ Context->getConstantVector(Mask));
}
}
}
// Undefined shuffle mask -> undefined value.
if (isa<UndefValue>(SVI.getOperand(2)))
- return ReplaceInstUsesWith(SVI, UndefValue::get(SVI.getType()));
+ return ReplaceInstUsesWith(SVI, Context->getUndef(SVI.getType()));
unsigned VWidth = cast<VectorType>(SVI.getType())->getNumElements();
std::vector<Constant*> Elts;
for (unsigned i = 0, e = Mask.size(); i != e; ++i) {
if (Mask[i] >= 2*e)
- Elts.push_back(UndefValue::get(Type::Int32Ty));
+ Elts.push_back(Context->getUndef(Type::Int32Ty));
else {
if ((Mask[i] >= e && isa<UndefValue>(RHS)) ||
(Mask[i] < e && isa<UndefValue>(LHS))) {
Mask[i] = 2*e; // Turn into undef.
- Elts.push_back(UndefValue::get(Type::Int32Ty));
+ Elts.push_back(Context->getUndef(Type::Int32Ty));
} else {
Mask[i] = Mask[i] % e; // Force to LHS.
Elts.push_back(ConstantInt::get(Type::Int32Ty, Mask[i]));
}
}
SVI.setOperand(0, SVI.getOperand(1));
- SVI.setOperand(1, UndefValue::get(RHS->getType()));
- SVI.setOperand(2, ConstantVector::get(Elts));
+ SVI.setOperand(1, Context->getUndef(RHS->getType()));
+ SVI.setOperand(2, Context->getConstantVector(Elts));
LHS = SVI.getOperand(0);
RHS = SVI.getOperand(1);
MadeChange = true;
std::vector<Constant*> Elts;
for (unsigned i = 0, e = NewMask.size(); i != e; ++i) {
if (NewMask[i] >= LHSInNElts*2) {
- Elts.push_back(UndefValue::get(Type::Int32Ty));
+ Elts.push_back(Context->getUndef(Type::Int32Ty));
} else {
Elts.push_back(ConstantInt::get(Type::Int32Ty, NewMask[i]));
}
}
return new ShuffleVectorInst(LHSSVI->getOperand(0),
LHSSVI->getOperand(1),
- ConstantVector::get(Elts));
+ Context->getConstantVector(Elts));
}
}
}
}
// ConstantProp instruction if trivially constant.
- if (Constant *C = ConstantFoldInstruction(Inst, TD)) {
+ if (Constant *C = ConstantFoldInstruction(Inst, BB->getContext(), TD)) {
DOUT << "IC: ConstFold to: " << *C << " from: " << *Inst;
Inst->replaceAllUsesWith(C);
++NumConstProp;
bool InstCombiner::DoOneIteration(Function &F, unsigned Iteration) {
bool Changed = false;
- TD = &getAnalysis<TargetData>();
+ TD = getAnalysisIfAvailable<TargetData>();
DEBUG(DOUT << "\n\nINSTCOMBINE ITERATION #" << Iteration << " on "
<< F.getNameStr() << "\n");
Changed = true;
}
if (!I->use_empty())
- I->replaceAllUsesWith(UndefValue::get(I->getType()));
+ I->replaceAllUsesWith(Context->getUndef(I->getType()));
I->eraseFromParent();
}
}
}
// Instruction isn't dead, see if we can constant propagate it.
- if (Constant *C = ConstantFoldInstruction(I, TD)) {
+ if (Constant *C = ConstantFoldInstruction(I, F.getContext(), TD)) {
DOUT << "IC: ConstFold to: " << *C << " from: " << *I;
// Add operands to the worklist.
continue;
}
- if (TD &&
- (I->getType()->getTypeID() == Type::VoidTyID ||
- I->isTrapping())) {
+ if (TD) {
// See if we can constant fold its operands.
for (User::op_iterator i = I->op_begin(), e = I->op_end(); i != e; ++i)
if (ConstantExpr *CE = dyn_cast<ConstantExpr>(i))
- if (Constant *NewC = ConstantFoldConstantExpression(CE, TD))
+ if (Constant *NewC = ConstantFoldConstantExpression(CE,
+ F.getContext(), TD))
if (NewC != CE) {
i->set(NewC);
Changed = true;
bool InstCombiner::runOnFunction(Function &F) {
MustPreserveLCSSA = mustPreserveAnalysisID(LCSSAID);
+ Context = &F.getContext();
bool EverMadeChange = false;
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