//===----------------------------------------------------------------------===//
#define DEBUG_TYPE "instsimplify"
-#include "llvm/GlobalAlias.h"
-#include "llvm/Operator.h"
-#include "llvm/ADT/Statistic.h"
-#include "llvm/ADT/SetVector.h"
#include "llvm/Analysis/InstructionSimplify.h"
+#include "llvm/ADT/SetVector.h"
+#include "llvm/ADT/Statistic.h"
#include "llvm/Analysis/AliasAnalysis.h"
#include "llvm/Analysis/ConstantFolding.h"
#include "llvm/Analysis/Dominators.h"
#include "llvm/Analysis/ValueTracking.h"
+#include "llvm/IR/DataLayout.h"
+#include "llvm/IR/GlobalAlias.h"
+#include "llvm/IR/Operator.h"
#include "llvm/Support/ConstantRange.h"
#include "llvm/Support/GetElementPtrTypeIterator.h"
#include "llvm/Support/PatternMatch.h"
#include "llvm/Support/ValueHandle.h"
-#include "llvm/Target/TargetData.h"
using namespace llvm;
using namespace llvm::PatternMatch;
STATISTIC(NumReassoc, "Number of reassociations");
struct Query {
- const TargetData *TD;
+ const DataLayout *TD;
const TargetLibraryInfo *TLI;
const DominatorTree *DT;
- Query(const TargetData *td, const TargetLibraryInfo *tli,
+ Query(const DataLayout *td, const TargetLibraryInfo *tli,
const DominatorTree *dt) : TD(td), TLI(tli), DT(dt) {}
};
}
Value *llvm::SimplifyAddInst(Value *Op0, Value *Op1, bool isNSW, bool isNUW,
- const TargetData *TD, const TargetLibraryInfo *TLI,
+ const DataLayout *TD, const TargetLibraryInfo *TLI,
const DominatorTree *DT) {
return ::SimplifyAddInst(Op0, Op1, isNSW, isNUW, Query (TD, TLI, DT),
RecursionLimit);
}
-/// \brief Accumulate the constant integer offset a GEP represents.
-///
-/// Given a getelementptr instruction/constantexpr, accumulate the constant
-/// offset from the base pointer into the provided APInt 'Offset'. Returns true
-/// if the GEP has all-constant indices. Returns false if any non-constant
-/// index is encountered leaving the 'Offset' in an undefined state. The
-/// 'Offset' APInt must be the bitwidth of the target's pointer size.
-static bool accumulateGEPOffset(const TargetData &TD, GEPOperator *GEP,
- APInt &Offset) {
- unsigned IntPtrWidth = TD.getPointerSizeInBits();
- assert(IntPtrWidth == Offset.getBitWidth());
-
- 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) {
- ConstantInt *OpC = dyn_cast<ConstantInt>(*I);
- if (!OpC) return false;
- if (OpC->isZero()) continue;
-
- // Handle a struct index, which adds its field offset to the pointer.
- if (StructType *STy = dyn_cast<StructType>(*GTI)) {
- unsigned ElementIdx = OpC->getZExtValue();
- const StructLayout *SL = TD.getStructLayout(STy);
- Offset += APInt(IntPtrWidth, SL->getElementOffset(ElementIdx));
- continue;
- }
-
- APInt TypeSize(IntPtrWidth, TD.getTypeAllocSize(GTI.getIndexedType()));
- Offset += OpC->getValue().sextOrTrunc(IntPtrWidth) * TypeSize;
- }
- return true;
-}
-
/// \brief Compute the base pointer and cumulative constant offsets for V.
///
/// This strips all constant offsets off of V, leaving it the base pointer, and
/// accumulates the total constant offset applied in the returned constant. It
/// returns 0 if V is not a pointer, and returns the constant '0' if there are
/// no constant offsets applied.
-static Constant *stripAndComputeConstantOffsets(const TargetData &TD,
+static Constant *stripAndComputeConstantOffsets(const DataLayout &TD,
Value *&V) {
if (!V->getType()->isPointerTy())
return 0;
Visited.insert(V);
do {
if (GEPOperator *GEP = dyn_cast<GEPOperator>(V)) {
- if (!GEP->isInBounds() || !accumulateGEPOffset(TD, GEP, Offset))
+ if (!GEP->isInBounds() || !GEP->accumulateConstantOffset(TD, Offset))
break;
V = GEP->getPointerOperand();
} else if (Operator::getOpcode(V) == Instruction::BitCast) {
/// \brief Compute the constant difference between two pointer values.
/// If the difference is not a constant, returns zero.
-static Constant *computePointerDifference(const TargetData &TD,
+static Constant *computePointerDifference(const DataLayout &TD,
Value *LHS, Value *RHS) {
Constant *LHSOffset = stripAndComputeConstantOffsets(TD, LHS);
if (!LHSOffset)
}
Value *llvm::SimplifySubInst(Value *Op0, Value *Op1, bool isNSW, bool isNUW,
- const TargetData *TD, const TargetLibraryInfo *TLI,
+ const DataLayout *TD, const TargetLibraryInfo *TLI,
const DominatorTree *DT) {
return ::SimplifySubInst(Op0, Op1, isNSW, isNUW, Query (TD, TLI, DT),
RecursionLimit);
}
+/// Given operands for an FAdd, see if we can fold the result. If not, this
+/// returns null.
+static Value *SimplifyFAddInst(Value *Op0, Value *Op1, FastMathFlags FMF,
+ const Query &Q, unsigned MaxRecurse) {
+ if (Constant *CLHS = dyn_cast<Constant>(Op0)) {
+ if (Constant *CRHS = dyn_cast<Constant>(Op1)) {
+ Constant *Ops[] = { CLHS, CRHS };
+ return ConstantFoldInstOperands(Instruction::FAdd, CLHS->getType(),
+ Ops, Q.TD, Q.TLI);
+ }
+
+ // Canonicalize the constant to the RHS.
+ std::swap(Op0, Op1);
+ }
+
+ // fadd X, -0 ==> X
+ if (match(Op1, m_NegZero()))
+ return Op0;
+
+ // fadd X, 0 ==> X, when we know X is not -0
+ if (match(Op1, m_Zero()) &&
+ (FMF.noSignedZeros() || CannotBeNegativeZero(Op0)))
+ return Op0;
+
+ // fadd [nnan ninf] X, (fsub [nnan ninf] 0, X) ==> 0
+ // where nnan and ninf have to occur at least once somewhere in this
+ // expression
+ Value *SubOp = 0;
+ if (match(Op1, m_FSub(m_AnyZero(), m_Specific(Op0))))
+ SubOp = Op1;
+ else if (match(Op0, m_FSub(m_AnyZero(), m_Specific(Op1))))
+ SubOp = Op0;
+ if (SubOp) {
+ Instruction *FSub = cast<Instruction>(SubOp);
+ if ((FMF.noNaNs() || FSub->hasNoNaNs()) &&
+ (FMF.noInfs() || FSub->hasNoInfs()))
+ return Constant::getNullValue(Op0->getType());
+ }
+
+ return 0;
+}
+
+/// Given operands for an FSub, see if we can fold the result. If not, this
+/// returns null.
+static Value *SimplifyFSubInst(Value *Op0, Value *Op1, FastMathFlags FMF,
+ const Query &Q, unsigned MaxRecurse) {
+ if (Constant *CLHS = dyn_cast<Constant>(Op0)) {
+ if (Constant *CRHS = dyn_cast<Constant>(Op1)) {
+ Constant *Ops[] = { CLHS, CRHS };
+ return ConstantFoldInstOperands(Instruction::FSub, CLHS->getType(),
+ Ops, Q.TD, Q.TLI);
+ }
+ }
+
+ // fsub X, 0 ==> X
+ if (match(Op1, m_Zero()))
+ return Op0;
+
+ // fsub X, -0 ==> X, when we know X is not -0
+ if (match(Op1, m_NegZero()) &&
+ (FMF.noSignedZeros() || CannotBeNegativeZero(Op0)))
+ return Op0;
+
+ // fsub 0, (fsub -0.0, X) ==> X
+ Value *X;
+ if (match(Op0, m_AnyZero())) {
+ if (match(Op1, m_FSub(m_NegZero(), m_Value(X))))
+ return X;
+ if (FMF.noSignedZeros() && match(Op1, m_FSub(m_AnyZero(), m_Value(X))))
+ return X;
+ }
+
+ // fsub nnan ninf x, x ==> 0.0
+ if (FMF.noNaNs() && FMF.noInfs() && Op0 == Op1)
+ return Constant::getNullValue(Op0->getType());
+
+ return 0;
+}
+
+/// Given the operands for an FMul, see if we can fold the result
+static Value *SimplifyFMulInst(Value *Op0, Value *Op1,
+ FastMathFlags FMF,
+ const Query &Q,
+ unsigned MaxRecurse) {
+ if (Constant *CLHS = dyn_cast<Constant>(Op0)) {
+ if (Constant *CRHS = dyn_cast<Constant>(Op1)) {
+ Constant *Ops[] = { CLHS, CRHS };
+ return ConstantFoldInstOperands(Instruction::FMul, CLHS->getType(),
+ Ops, Q.TD, Q.TLI);
+ }
+
+ // Canonicalize the constant to the RHS.
+ std::swap(Op0, Op1);
+ }
+
+ // fmul X, 1.0 ==> X
+ if (match(Op1, m_FPOne()))
+ return Op0;
+
+ // fmul nnan nsz X, 0 ==> 0
+ if (FMF.noNaNs() && FMF.noSignedZeros() && match(Op1, m_AnyZero()))
+ return Op1;
+
+ return 0;
+}
+
/// SimplifyMulInst - Given operands for a Mul, see if we can
/// fold the result. If not, this returns null.
static Value *SimplifyMulInst(Value *Op0, Value *Op1, const Query &Q,
return 0;
}
-Value *llvm::SimplifyMulInst(Value *Op0, Value *Op1, const TargetData *TD,
+Value *llvm::SimplifyFAddInst(Value *Op0, Value *Op1, FastMathFlags FMF,
+ const DataLayout *TD, const TargetLibraryInfo *TLI,
+ const DominatorTree *DT) {
+ return ::SimplifyFAddInst(Op0, Op1, FMF, Query (TD, TLI, DT), RecursionLimit);
+}
+
+Value *llvm::SimplifyFSubInst(Value *Op0, Value *Op1, FastMathFlags FMF,
+ const DataLayout *TD, const TargetLibraryInfo *TLI,
+ const DominatorTree *DT) {
+ return ::SimplifyFSubInst(Op0, Op1, FMF, Query (TD, TLI, DT), RecursionLimit);
+}
+
+Value *llvm::SimplifyFMulInst(Value *Op0, Value *Op1,
+ FastMathFlags FMF,
+ const DataLayout *TD,
+ const TargetLibraryInfo *TLI,
+ const DominatorTree *DT) {
+ return ::SimplifyFMulInst(Op0, Op1, FMF, Query (TD, TLI, DT), RecursionLimit);
+}
+
+Value *llvm::SimplifyMulInst(Value *Op0, Value *Op1, const DataLayout *TD,
const TargetLibraryInfo *TLI,
const DominatorTree *DT) {
return ::SimplifyMulInst(Op0, Op1, Query (TD, TLI, DT), RecursionLimit);
return 0;
}
-Value *llvm::SimplifySDivInst(Value *Op0, Value *Op1, const TargetData *TD,
+Value *llvm::SimplifySDivInst(Value *Op0, Value *Op1, const DataLayout *TD,
const TargetLibraryInfo *TLI,
const DominatorTree *DT) {
return ::SimplifySDivInst(Op0, Op1, Query (TD, TLI, DT), RecursionLimit);
return 0;
}
-Value *llvm::SimplifyUDivInst(Value *Op0, Value *Op1, const TargetData *TD,
+Value *llvm::SimplifyUDivInst(Value *Op0, Value *Op1, const DataLayout *TD,
const TargetLibraryInfo *TLI,
const DominatorTree *DT) {
return ::SimplifyUDivInst(Op0, Op1, Query (TD, TLI, DT), RecursionLimit);
return 0;
}
-Value *llvm::SimplifyFDivInst(Value *Op0, Value *Op1, const TargetData *TD,
+Value *llvm::SimplifyFDivInst(Value *Op0, Value *Op1, const DataLayout *TD,
const TargetLibraryInfo *TLI,
const DominatorTree *DT) {
return ::SimplifyFDivInst(Op0, Op1, Query (TD, TLI, DT), RecursionLimit);
return 0;
}
-Value *llvm::SimplifySRemInst(Value *Op0, Value *Op1, const TargetData *TD,
+Value *llvm::SimplifySRemInst(Value *Op0, Value *Op1, const DataLayout *TD,
const TargetLibraryInfo *TLI,
const DominatorTree *DT) {
return ::SimplifySRemInst(Op0, Op1, Query (TD, TLI, DT), RecursionLimit);
return 0;
}
-Value *llvm::SimplifyURemInst(Value *Op0, Value *Op1, const TargetData *TD,
+Value *llvm::SimplifyURemInst(Value *Op0, Value *Op1, const DataLayout *TD,
const TargetLibraryInfo *TLI,
const DominatorTree *DT) {
return ::SimplifyURemInst(Op0, Op1, Query (TD, TLI, DT), RecursionLimit);
return 0;
}
-Value *llvm::SimplifyFRemInst(Value *Op0, Value *Op1, const TargetData *TD,
+Value *llvm::SimplifyFRemInst(Value *Op0, Value *Op1, const DataLayout *TD,
const TargetLibraryInfo *TLI,
const DominatorTree *DT) {
return ::SimplifyFRemInst(Op0, Op1, Query (TD, TLI, DT), RecursionLimit);
}
Value *llvm::SimplifyShlInst(Value *Op0, Value *Op1, bool isNSW, bool isNUW,
- const TargetData *TD, const TargetLibraryInfo *TLI,
+ const DataLayout *TD, const TargetLibraryInfo *TLI,
const DominatorTree *DT) {
return ::SimplifyShlInst(Op0, Op1, isNSW, isNUW, Query (TD, TLI, DT),
RecursionLimit);
}
Value *llvm::SimplifyLShrInst(Value *Op0, Value *Op1, bool isExact,
- const TargetData *TD,
+ const DataLayout *TD,
const TargetLibraryInfo *TLI,
const DominatorTree *DT) {
return ::SimplifyLShrInst(Op0, Op1, isExact, Query (TD, TLI, DT),
}
Value *llvm::SimplifyAShrInst(Value *Op0, Value *Op1, bool isExact,
- const TargetData *TD,
+ const DataLayout *TD,
const TargetLibraryInfo *TLI,
const DominatorTree *DT) {
return ::SimplifyAShrInst(Op0, Op1, isExact, Query (TD, TLI, DT),
// A & (-A) = A if A is a power of two or zero.
if (match(Op0, m_Neg(m_Specific(Op1))) ||
match(Op1, m_Neg(m_Specific(Op0)))) {
- if (isPowerOfTwo(Op0, Q.TD, /*OrZero*/true))
+ if (isKnownToBeAPowerOfTwo(Op0, /*OrZero*/true))
return Op0;
- if (isPowerOfTwo(Op1, Q.TD, /*OrZero*/true))
+ if (isKnownToBeAPowerOfTwo(Op1, /*OrZero*/true))
return Op1;
}
return 0;
}
-Value *llvm::SimplifyAndInst(Value *Op0, Value *Op1, const TargetData *TD,
+Value *llvm::SimplifyAndInst(Value *Op0, Value *Op1, const DataLayout *TD,
const TargetLibraryInfo *TLI,
const DominatorTree *DT) {
return ::SimplifyAndInst(Op0, Op1, Query (TD, TLI, DT), RecursionLimit);
return 0;
}
-Value *llvm::SimplifyOrInst(Value *Op0, Value *Op1, const TargetData *TD,
+Value *llvm::SimplifyOrInst(Value *Op0, Value *Op1, const DataLayout *TD,
const TargetLibraryInfo *TLI,
const DominatorTree *DT) {
return ::SimplifyOrInst(Op0, Op1, Query (TD, TLI, DT), RecursionLimit);
return 0;
}
-Value *llvm::SimplifyXorInst(Value *Op0, Value *Op1, const TargetData *TD,
+Value *llvm::SimplifyXorInst(Value *Op0, Value *Op1, const DataLayout *TD,
const TargetLibraryInfo *TLI,
const DominatorTree *DT) {
return ::SimplifyXorInst(Op0, Op1, Query (TD, TLI, DT), RecursionLimit);
return 0;
}
-static Constant *computePointerICmp(const TargetData &TD,
+static Constant *computePointerICmp(const DataLayout &TD,
CmpInst::Predicate Pred,
Value *LHS, Value *RHS) {
// We can only fold certain predicates on pointer comparisons.
// LHS >u RHS.
case ICmpInst::ICMP_UGT:
case ICmpInst::ICMP_UGE:
- // Comparison is true if the LHS <s 0.
+ // Comparison is true iff the LHS <s 0.
if (MaxRecurse)
if (Value *V = SimplifyICmpInst(ICmpInst::ICMP_SLT, SrcOp,
Constant::getNullValue(SrcTy),
break;
case ICmpInst::ICMP_ULT:
case ICmpInst::ICMP_ULE:
- // Comparison is true if the LHS >=s 0.
+ // Comparison is true iff the LHS >=s 0.
if (MaxRecurse)
if (Value *V = SimplifyICmpInst(ICmpInst::ICMP_SGE, SrcOp,
Constant::getNullValue(SrcTy),
if (A && C && (A == C || A == D || B == C || B == D) &&
NoLHSWrapProblem && NoRHSWrapProblem) {
// Determine Y and Z in the form icmp (X+Y), (X+Z).
- Value *Y = (A == C || A == D) ? B : A;
- Value *Z = (C == A || C == B) ? D : C;
+ Value *Y, *Z;
+ if (A == C) {
+ // C + B == C + D -> B == D
+ Y = B;
+ Z = D;
+ } else if (A == D) {
+ // D + B == C + D -> B == C
+ Y = B;
+ Z = C;
+ } else if (B == C) {
+ // A + C == C + D -> A == D
+ Y = A;
+ Z = D;
+ } else {
+ assert(B == D);
+ // A + D == C + D -> A == C
+ Y = A;
+ Z = C;
+ }
if (Value *V = SimplifyICmpInst(Pred, Y, Z, Q, MaxRecurse-1))
return V;
}
// Simplify comparisons involving max/min.
Value *A, *B;
CmpInst::Predicate P = CmpInst::BAD_ICMP_PREDICATE;
- CmpInst::Predicate EqP; // Chosen so that "A == max/min(A,B)" if "A EqP B".
+ CmpInst::Predicate EqP; // Chosen so that "A == max/min(A,B)" iff "A EqP B".
// Signed variants on "max(a,b)>=a -> true".
if (match(LHS, m_SMax(m_Value(A), m_Value(B))) && (A == RHS || B == RHS)) {
if (A != RHS) std::swap(A, B); // smax(A, B) pred A.
- EqP = CmpInst::ICMP_SGE; // "A == smax(A, B)" if "A sge B".
+ EqP = CmpInst::ICMP_SGE; // "A == smax(A, B)" iff "A sge B".
// We analyze this as smax(A, B) pred A.
P = Pred;
} else if (match(RHS, m_SMax(m_Value(A), m_Value(B))) &&
(A == LHS || B == LHS)) {
if (A != LHS) std::swap(A, B); // A pred smax(A, B).
- EqP = CmpInst::ICMP_SGE; // "A == smax(A, B)" if "A sge B".
+ EqP = CmpInst::ICMP_SGE; // "A == smax(A, B)" iff "A sge B".
// We analyze this as smax(A, B) swapped-pred A.
P = CmpInst::getSwappedPredicate(Pred);
} else if (match(LHS, m_SMin(m_Value(A), m_Value(B))) &&
(A == RHS || B == RHS)) {
if (A != RHS) std::swap(A, B); // smin(A, B) pred A.
- EqP = CmpInst::ICMP_SLE; // "A == smin(A, B)" if "A sle B".
+ EqP = CmpInst::ICMP_SLE; // "A == smin(A, B)" iff "A sle B".
// We analyze this as smax(-A, -B) swapped-pred -A.
// Note that we do not need to actually form -A or -B thanks to EqP.
P = CmpInst::getSwappedPredicate(Pred);
} else if (match(RHS, m_SMin(m_Value(A), m_Value(B))) &&
(A == LHS || B == LHS)) {
if (A != LHS) std::swap(A, B); // A pred smin(A, B).
- EqP = CmpInst::ICMP_SLE; // "A == smin(A, B)" if "A sle B".
+ EqP = CmpInst::ICMP_SLE; // "A == smin(A, B)" iff "A sle B".
// We analyze this as smax(-A, -B) pred -A.
// Note that we do not need to actually form -A or -B thanks to EqP.
P = Pred;
P = CmpInst::BAD_ICMP_PREDICATE;
if (match(LHS, m_UMax(m_Value(A), m_Value(B))) && (A == RHS || B == RHS)) {
if (A != RHS) std::swap(A, B); // umax(A, B) pred A.
- EqP = CmpInst::ICMP_UGE; // "A == umax(A, B)" if "A uge B".
+ EqP = CmpInst::ICMP_UGE; // "A == umax(A, B)" iff "A uge B".
// We analyze this as umax(A, B) pred A.
P = Pred;
} else if (match(RHS, m_UMax(m_Value(A), m_Value(B))) &&
(A == LHS || B == LHS)) {
if (A != LHS) std::swap(A, B); // A pred umax(A, B).
- EqP = CmpInst::ICMP_UGE; // "A == umax(A, B)" if "A uge B".
+ EqP = CmpInst::ICMP_UGE; // "A == umax(A, B)" iff "A uge B".
// We analyze this as umax(A, B) swapped-pred A.
P = CmpInst::getSwappedPredicate(Pred);
} else if (match(LHS, m_UMin(m_Value(A), m_Value(B))) &&
(A == RHS || B == RHS)) {
if (A != RHS) std::swap(A, B); // umin(A, B) pred A.
- EqP = CmpInst::ICMP_ULE; // "A == umin(A, B)" if "A ule B".
+ EqP = CmpInst::ICMP_ULE; // "A == umin(A, B)" iff "A ule B".
// We analyze this as umax(-A, -B) swapped-pred -A.
// Note that we do not need to actually form -A or -B thanks to EqP.
P = CmpInst::getSwappedPredicate(Pred);
} else if (match(RHS, m_UMin(m_Value(A), m_Value(B))) &&
(A == LHS || B == LHS)) {
if (A != LHS) std::swap(A, B); // A pred umin(A, B).
- EqP = CmpInst::ICMP_ULE; // "A == umin(A, B)" if "A ule B".
+ EqP = CmpInst::ICMP_ULE; // "A == umin(A, B)" iff "A ule B".
// We analyze this as umax(-A, -B) pred -A.
// Note that we do not need to actually form -A or -B thanks to EqP.
P = Pred;
}
Value *llvm::SimplifyICmpInst(unsigned Predicate, Value *LHS, Value *RHS,
- const TargetData *TD,
+ const DataLayout *TD,
const TargetLibraryInfo *TLI,
const DominatorTree *DT) {
return ::SimplifyICmpInst(Predicate, LHS, RHS, Query (TD, TLI, DT),
}
Value *llvm::SimplifyFCmpInst(unsigned Predicate, Value *LHS, Value *RHS,
- const TargetData *TD,
+ const DataLayout *TD,
const TargetLibraryInfo *TLI,
const DominatorTree *DT) {
return ::SimplifyFCmpInst(Predicate, LHS, RHS, Query (TD, TLI, DT),
}
Value *llvm::SimplifySelectInst(Value *Cond, Value *TrueVal, Value *FalseVal,
- const TargetData *TD,
+ const DataLayout *TD,
const TargetLibraryInfo *TLI,
const DominatorTree *DT) {
return ::SimplifySelectInst(Cond, TrueVal, FalseVal, Query (TD, TLI, DT),
return ConstantExpr::getGetElementPtr(cast<Constant>(Ops[0]), Ops.slice(1));
}
-Value *llvm::SimplifyGEPInst(ArrayRef<Value *> Ops, const TargetData *TD,
+Value *llvm::SimplifyGEPInst(ArrayRef<Value *> Ops, const DataLayout *TD,
const TargetLibraryInfo *TLI,
const DominatorTree *DT) {
return ::SimplifyGEPInst(Ops, Query (TD, TLI, DT), RecursionLimit);
Value *llvm::SimplifyInsertValueInst(Value *Agg, Value *Val,
ArrayRef<unsigned> Idxs,
- const TargetData *TD,
+ const DataLayout *TD,
const TargetLibraryInfo *TLI,
const DominatorTree *DT) {
return ::SimplifyInsertValueInst(Agg, Val, Idxs, Query (TD, TLI, DT),
return 0;
}
-Value *llvm::SimplifyTruncInst(Value *Op, Type *Ty, const TargetData *TD,
+Value *llvm::SimplifyTruncInst(Value *Op, Type *Ty, const DataLayout *TD,
const TargetLibraryInfo *TLI,
const DominatorTree *DT) {
return ::SimplifyTruncInst(Op, Ty, Query (TD, TLI, DT), RecursionLimit);
case Instruction::Add:
return SimplifyAddInst(LHS, RHS, /*isNSW*/false, /*isNUW*/false,
Q, MaxRecurse);
+ case Instruction::FAdd:
+ return SimplifyFAddInst(LHS, RHS, FastMathFlags(), Q, MaxRecurse);
+
case Instruction::Sub:
return SimplifySubInst(LHS, RHS, /*isNSW*/false, /*isNUW*/false,
Q, MaxRecurse);
+ case Instruction::FSub:
+ return SimplifyFSubInst(LHS, RHS, FastMathFlags(), Q, MaxRecurse);
+
case Instruction::Mul: return SimplifyMulInst (LHS, RHS, Q, MaxRecurse);
+ case Instruction::FMul:
+ return SimplifyFMulInst (LHS, RHS, FastMathFlags(), Q, MaxRecurse);
case Instruction::SDiv: return SimplifySDivInst(LHS, RHS, Q, MaxRecurse);
case Instruction::UDiv: return SimplifyUDivInst(LHS, RHS, Q, MaxRecurse);
case Instruction::FDiv: return SimplifyFDivInst(LHS, RHS, Q, MaxRecurse);
}
Value *llvm::SimplifyBinOp(unsigned Opcode, Value *LHS, Value *RHS,
- const TargetData *TD, const TargetLibraryInfo *TLI,
+ const DataLayout *TD, const TargetLibraryInfo *TLI,
const DominatorTree *DT) {
return ::SimplifyBinOp(Opcode, LHS, RHS, Query (TD, TLI, DT), RecursionLimit);
}
}
Value *llvm::SimplifyCmpInst(unsigned Predicate, Value *LHS, Value *RHS,
- const TargetData *TD, const TargetLibraryInfo *TLI,
+ const DataLayout *TD, const TargetLibraryInfo *TLI,
const DominatorTree *DT) {
return ::SimplifyCmpInst(Predicate, LHS, RHS, Query (TD, TLI, DT),
RecursionLimit);
}
-static Value *SimplifyCallInst(CallInst *CI, const Query &) {
+template <typename IterTy>
+static Value *SimplifyCall(Value *V, IterTy ArgBegin, IterTy ArgEnd,
+ const Query &Q, unsigned MaxRecurse) {
+ Type *Ty = V->getType();
+ if (PointerType *PTy = dyn_cast<PointerType>(Ty))
+ Ty = PTy->getElementType();
+ FunctionType *FTy = cast<FunctionType>(Ty);
+
// call undef -> undef
- if (isa<UndefValue>(CI->getCalledValue()))
- return UndefValue::get(CI->getType());
+ if (isa<UndefValue>(V))
+ return UndefValue::get(FTy->getReturnType());
- return 0;
+ Function *F = dyn_cast<Function>(V);
+ if (!F)
+ return 0;
+
+ if (!canConstantFoldCallTo(F))
+ return 0;
+
+ SmallVector<Constant *, 4> ConstantArgs;
+ ConstantArgs.reserve(ArgEnd - ArgBegin);
+ for (IterTy I = ArgBegin, E = ArgEnd; I != E; ++I) {
+ Constant *C = dyn_cast<Constant>(*I);
+ if (!C)
+ return 0;
+ ConstantArgs.push_back(C);
+ }
+
+ return ConstantFoldCall(F, ConstantArgs, Q.TLI);
+}
+
+Value *llvm::SimplifyCall(Value *V, User::op_iterator ArgBegin,
+ User::op_iterator ArgEnd, const DataLayout *TD,
+ const TargetLibraryInfo *TLI,
+ const DominatorTree *DT) {
+ return ::SimplifyCall(V, ArgBegin, ArgEnd, Query(TD, TLI, DT),
+ RecursionLimit);
+}
+
+Value *llvm::SimplifyCall(Value *V, ArrayRef<Value *> Args,
+ const DataLayout *TD, const TargetLibraryInfo *TLI,
+ const DominatorTree *DT) {
+ return ::SimplifyCall(V, Args.begin(), Args.end(), Query(TD, TLI, DT),
+ RecursionLimit);
}
/// SimplifyInstruction - See if we can compute a simplified version of this
/// instruction. If not, this returns null.
-Value *llvm::SimplifyInstruction(Instruction *I, const TargetData *TD,
+Value *llvm::SimplifyInstruction(Instruction *I, const DataLayout *TD,
const TargetLibraryInfo *TLI,
const DominatorTree *DT) {
Value *Result;
default:
Result = ConstantFoldInstruction(I, TD, TLI);
break;
+ case Instruction::FAdd:
+ Result = SimplifyFAddInst(I->getOperand(0), I->getOperand(1),
+ I->getFastMathFlags(), TD, TLI, DT);
+ break;
case Instruction::Add:
Result = SimplifyAddInst(I->getOperand(0), I->getOperand(1),
cast<BinaryOperator>(I)->hasNoSignedWrap(),
cast<BinaryOperator>(I)->hasNoUnsignedWrap(),
TD, TLI, DT);
break;
+ case Instruction::FSub:
+ Result = SimplifyFSubInst(I->getOperand(0), I->getOperand(1),
+ I->getFastMathFlags(), TD, TLI, DT);
+ break;
case Instruction::Sub:
Result = SimplifySubInst(I->getOperand(0), I->getOperand(1),
cast<BinaryOperator>(I)->hasNoSignedWrap(),
cast<BinaryOperator>(I)->hasNoUnsignedWrap(),
TD, TLI, DT);
break;
+ case Instruction::FMul:
+ Result = SimplifyFMulInst(I->getOperand(0), I->getOperand(1),
+ I->getFastMathFlags(), TD, TLI, DT);
+ break;
case Instruction::Mul:
Result = SimplifyMulInst(I->getOperand(0), I->getOperand(1), TD, TLI, DT);
break;
case Instruction::PHI:
Result = SimplifyPHINode(cast<PHINode>(I), Query (TD, TLI, DT));
break;
- case Instruction::Call:
- Result = SimplifyCallInst(cast<CallInst>(I), Query (TD, TLI, DT));
+ case Instruction::Call: {
+ CallSite CS(cast<CallInst>(I));
+ Result = SimplifyCall(CS.getCalledValue(), CS.arg_begin(), CS.arg_end(),
+ TD, TLI, DT);
break;
+ }
case Instruction::Trunc:
Result = SimplifyTruncInst(I->getOperand(0), I->getType(), TD, TLI, DT);
break;
/// This routine returns 'true' only when *it* simplifies something. The passed
/// in simplified value does not count toward this.
static bool replaceAndRecursivelySimplifyImpl(Instruction *I, Value *SimpleV,
- const TargetData *TD,
+ const DataLayout *TD,
const TargetLibraryInfo *TLI,
const DominatorTree *DT) {
bool Simplified = false;
}
bool llvm::recursivelySimplifyInstruction(Instruction *I,
- const TargetData *TD,
+ const DataLayout *TD,
const TargetLibraryInfo *TLI,
const DominatorTree *DT) {
return replaceAndRecursivelySimplifyImpl(I, 0, TD, TLI, DT);
}
bool llvm::replaceAndRecursivelySimplify(Instruction *I, Value *SimpleV,
- const TargetData *TD,
+ const DataLayout *TD,
const TargetLibraryInfo *TLI,
const DominatorTree *DT) {
assert(I != SimpleV && "replaceAndRecursivelySimplify(X,X) is not valid!");
projects / oota-llvm.git / blobdiff