#include "llvm/Instructions.h"
#include "llvm/DerivedTypes.h"
#include "llvm/Function.h"
+#include "llvm/ADT/SmallVector.h"
#include "llvm/Support/Compiler.h"
#include "llvm/Support/GetElementPtrTypeIterator.h"
#include "llvm/Support/ManagedStatic.h"
// If the src and dest elements are both integers, or both floats, we can
// just BitCast each element because the elements are the same size.
- if ((SrcEltTy->isIntegral() && DstEltTy->isIntegral()) ||
+ if ((SrcEltTy->isInteger() && DstEltTy->isInteger()) ||
(SrcEltTy->isFloatingPoint() && DstEltTy->isFloatingPoint())) {
for (unsigned i = 0; i != SrcNumElts; ++i)
Result.push_back(
}
// If this is an int-to-fp cast ..
- if (SrcEltTy->isIntegral()) {
+ if (SrcEltTy->isInteger()) {
// Ensure that it is int-to-fp cast
assert(DstEltTy->isFloatingPoint());
if (DstEltTy->getTypeID() == Type::DoubleTyID) {
}
// Otherwise, this is an fp-to-int cast.
- assert(SrcEltTy->isFloatingPoint() && DstEltTy->isIntegral());
+ assert(SrcEltTy->isFloatingPoint() && DstEltTy->isInteger());
if (SrcEltTy->getTypeID() == Type::DoubleTyID) {
for (unsigned i = 0; i != SrcNumElts; ++i) {
return 0; // Can't fold.
case Instruction::FPToUI:
if (const ConstantFP *FPC = dyn_cast<ConstantFP>(V))
- return ConstantIntegral::get(DestTy,(uint64_t) FPC->getValue());
+ return ConstantInt::get(DestTy,(uint64_t) FPC->getValue());
return 0; // Can't fold.
case Instruction::FPToSI:
if (const ConstantFP *FPC = dyn_cast<ConstantFP>(V))
- return ConstantIntegral::get(DestTy,(int64_t) FPC->getValue());
+ return ConstantInt::get(DestTy,(int64_t) FPC->getValue());
return 0; // Can't fold.
case Instruction::IntToPtr: //always treated as unsigned
if (V->isNullValue()) // Is it an integral null value?
return 0; // Other pointer types cannot be casted
case Instruction::PtrToInt: // always treated as unsigned
if (V->isNullValue()) // is it a null pointer value?
- return ConstantIntegral::get(DestTy, 0);
+ return ConstantInt::get(DestTy, 0);
return 0; // Other pointer types cannot be casted
case Instruction::UIToFP:
- if (const ConstantIntegral *CI = dyn_cast<ConstantIntegral>(V))
+ if (const ConstantInt *CI = dyn_cast<ConstantInt>(V))
return ConstantFP::get(DestTy, double(CI->getZExtValue()));
return 0;
case Instruction::SIToFP:
- if (const ConstantIntegral *CI = dyn_cast<ConstantIntegral>(V))
+ if (const ConstantInt *CI = dyn_cast<ConstantInt>(V))
return ConstantFP::get(DestTy, double(CI->getSExtValue()));
return 0;
case Instruction::ZExt:
- if (const ConstantIntegral *CI = dyn_cast<ConstantIntegral>(V))
+ if (const ConstantInt *CI = dyn_cast<ConstantInt>(V))
return ConstantInt::get(DestTy, CI->getZExtValue());
return 0;
case Instruction::SExt:
- if (const ConstantIntegral *CI = dyn_cast<ConstantIntegral>(V))
+ if (const ConstantInt *CI = dyn_cast<ConstantInt>(V))
return ConstantInt::get(DestTy, CI->getSExtValue());
return 0;
case Instruction::Trunc:
if (const ConstantInt *CI = dyn_cast<ConstantInt>(V)) // Can't trunc a bool
- return ConstantIntegral::get(DestTy, CI->getZExtValue());
+ return ConstantInt::get(DestTy, CI->getZExtValue());
return 0;
case Instruction::BitCast:
if (SrcTy == DestTy)
// the first element. If so, return the appropriate GEP instruction.
if (const PointerType *PTy = dyn_cast<PointerType>(V->getType()))
if (const PointerType *DPTy = dyn_cast<PointerType>(DestTy)) {
- std::vector<Value*> IdxList;
+ SmallVector<Value*, 8> IdxList;
IdxList.push_back(Constant::getNullValue(Type::Int32Ty));
const Type *ElTy = PTy->getElementType();
while (ElTy != DPTy->getElementType()) {
if (ElTy == DPTy->getElementType())
return ConstantExpr::getGetElementPtr(
- const_cast<Constant*>(V),IdxList);
+ const_cast<Constant*>(V), &IdxList[0], IdxList.size());
}
// Handle casts from one packed constant to another. We know that the src
// Handle integral constant input.
if (const ConstantInt *CI = dyn_cast<ConstantInt>(V)) {
// Integral -> Integral, must be changing sign.
- if (DestTy->isIntegral())
+ if (DestTy->isInteger())
return ConstantInt::get(DestTy, CI->getZExtValue());
if (DestTy->isFloatingPoint()) {
// Handle ConstantFP input.
if (const ConstantFP *FP = dyn_cast<ConstantFP>(V)) {
// FP -> Integral.
- if (DestTy->isIntegral()) {
- if (DestTy == Type::Int32Ty)
- return ConstantInt::get(DestTy, FloatToBits(FP->getValue()));
- assert(DestTy == Type::Int64Ty &&
- "Incorrect integer type for bitcast!");
+ if (DestTy->isInteger())
return ConstantInt::get(DestTy, DoubleToBits(FP->getValue()));
- }
}
return 0;
default:
Constant *llvm::ConstantFoldSelectInstruction(const Constant *Cond,
const Constant *V1,
const Constant *V2) {
- if (const ConstantBool *CB = dyn_cast<ConstantBool>(Cond))
- return const_cast<Constant*>(CB->getValue() ? V1 : V2);
+ if (const ConstantInt *CB = dyn_cast<ConstantInt>(Cond))
+ return const_cast<Constant*>(CB->getZExtValue() ? V1 : V2);
if (isa<UndefValue>(V1)) return const_cast<Constant*>(V2);
if (isa<UndefValue>(V2)) return const_cast<Constant*>(V1);
// At this point we know neither constant is an UndefValue nor a ConstantExpr
// so look at directly computing the value.
- if (const ConstantBool *CB1 = dyn_cast<ConstantBool>(C1)) {
- if (const ConstantBool *CB2 = dyn_cast<ConstantBool>(C2)) {
- switch (Opcode) {
- default:
- break;
- case Instruction::And:
- return ConstantBool::get(CB1->getValue() & CB2->getValue());
- case Instruction::Or:
- return ConstantBool::get(CB1->getValue() | CB2->getValue());
- case Instruction::Xor:
- return ConstantBool::get(CB1->getValue() ^ CB2->getValue());
- }
- }
- } else if (const ConstantInt *CI1 = dyn_cast<ConstantInt>(C1)) {
+ if (const ConstantInt *CI1 = dyn_cast<ConstantInt>(C1)) {
if (const ConstantInt *CI2 = dyn_cast<ConstantInt>(C2)) {
uint64_t C1Val = CI1->getZExtValue();
uint64_t C2Val = CI2->getZExtValue();
case Instruction::Xor:
return ConstantInt::get(C1->getType(), C1Val ^ C2Val);
case Instruction::Shl:
- if (C2Val >= CI1->getType()->getPrimitiveSizeInBits())
- C2Val = CI1->getType()->getPrimitiveSizeInBits() - 1;
return ConstantInt::get(C1->getType(), C1Val << C2Val);
case Instruction::LShr:
- if (C2Val >= CI1->getType()->getPrimitiveSizeInBits())
- C2Val = CI1->getType()->getPrimitiveSizeInBits() - 1;
return ConstantInt::get(C1->getType(), C1Val >> C2Val);
case Instruction::AShr:
- if (C2Val >= CI1->getType()->getPrimitiveSizeInBits())
- C2Val = CI1->getType()->getPrimitiveSizeInBits() - 1;
return ConstantInt::get(C1->getType(),
CI1->getSExtValue() >> C2Val);
}
return 1;
}
-/// evaluatFCmpeRelation - This function determines if there is anything we can
+/// evaluateFCmpRelation - This function determines if there is anything we can
/// decide about the two constants provided. This doesn't need to handle simple
/// things like ConstantFP comparisons, but should instead handle ConstantExprs.
/// If we can determine that the two constants have a particular relation to
if (!isa<ConstantExpr>(V1)) {
if (!isa<ConstantExpr>(V2)) {
// We distilled thisUse the standard constant folder for a few cases
- ConstantBool *R = 0;
+ ConstantInt *R = 0;
Constant *C1 = const_cast<Constant*>(V1);
Constant *C2 = const_cast<Constant*>(V2);
- R = dyn_cast<ConstantBool>(
+ R = dyn_cast<ConstantInt>(
ConstantExpr::getFCmp(FCmpInst::FCMP_OEQ, C1, C2));
- if (R && R->getValue())
+ if (R && R->getZExtValue())
return FCmpInst::FCMP_OEQ;
- R = dyn_cast<ConstantBool>(
+ R = dyn_cast<ConstantInt>(
ConstantExpr::getFCmp(FCmpInst::FCMP_OLT, C1, C2));
- if (R && R->getValue())
+ if (R && R->getZExtValue())
return FCmpInst::FCMP_OLT;
- R = dyn_cast<ConstantBool>(
+ R = dyn_cast<ConstantInt>(
ConstantExpr::getFCmp(FCmpInst::FCMP_OGT, C1, C2));
- if (R && R->getValue())
+ if (R && R->getZExtValue())
return FCmpInst::FCMP_OGT;
// Nothing more we can do
if (!isa<GlobalValue>(V2) && !isa<ConstantExpr>(V2)) {
// We distilled this down to a simple case, use the standard constant
// folder.
- ConstantBool *R = 0;
+ ConstantInt *R = 0;
Constant *C1 = const_cast<Constant*>(V1);
Constant *C2 = const_cast<Constant*>(V2);
ICmpInst::Predicate pred = ICmpInst::ICMP_EQ;
- R = dyn_cast<ConstantBool>(ConstantExpr::getICmp(pred, C1, C2));
- if (R && R->getValue())
+ R = dyn_cast<ConstantInt>(ConstantExpr::getICmp(pred, C1, C2));
+ if (R && R->getZExtValue())
return pred;
pred = isSigned ? ICmpInst::ICMP_SLT : ICmpInst::ICMP_ULT;
- R = dyn_cast<ConstantBool>(ConstantExpr::getICmp(pred, C1, C2));
- if (R && R->getValue())
+ R = dyn_cast<ConstantInt>(ConstantExpr::getICmp(pred, C1, C2));
+ if (R && R->getZExtValue())
return pred;
pred = isSigned ? ICmpInst::ICMP_SGT : ICmpInst::ICMP_UGT;
- R = dyn_cast<ConstantBool>(ConstantExpr::getICmp(pred, C1, C2));
- if (R && R->getValue())
+ R = dyn_cast<ConstantInt>(ConstantExpr::getICmp(pred, C1, C2));
+ if (R && R->getZExtValue())
return pred;
// If we couldn't figure it out, bail.
// If the cast is not actually changing bits, and the second operand is a
// null pointer, do the comparison with the pre-casted value.
if (V2->isNullValue() &&
- (isa<PointerType>(CE1->getType()) || CE1->getType()->isIntegral())) {
+ (isa<PointerType>(CE1->getType()) || CE1->getType()->isInteger())) {
bool sgnd = CE1->getOpcode() == Instruction::ZExt ? false :
(CE1->getOpcode() == Instruction::SExt ? true :
(CE1->getOpcode() == Instruction::PtrToInt ? false : isSigned));
if (const ConstantExpr *CE2 = dyn_cast<ConstantExpr>(V2))
if (CE2->isCast() && isa<PointerType>(CE1->getType()) &&
CE1->getOperand(0)->getType() == CE2->getOperand(0)->getType() &&
- CE1->getOperand(0)->getType()->isIntegral()) {
+ CE1->getOperand(0)->getType()->isInteger()) {
bool sgnd = CE1->getOpcode() == Instruction::ZExt ? false :
(CE1->getOpcode() == Instruction::SExt ? true :
(CE1->getOpcode() == Instruction::PtrToInt ? false : isSigned));
// are non-zero then we have a difference, otherwise we are equal.
for (; i < CE1->getNumOperands(); ++i)
if (!CE1->getOperand(i)->isNullValue())
- if (isa<ConstantIntegral>(CE1->getOperand(i)))
+ if (isa<ConstantInt>(CE1->getOperand(i)))
return isSigned ? ICmpInst::ICMP_SGT : ICmpInst::ICMP_UGT;
else
return ICmpInst::BAD_ICMP_PREDICATE; // Might be equal.
for (; i < CE2->getNumOperands(); ++i)
if (!CE2->getOperand(i)->isNullValue())
- if (isa<ConstantIntegral>(CE2->getOperand(i)))
+ if (isa<ConstantInt>(CE2->getOperand(i)))
return isSigned ? ICmpInst::ICMP_SLT : ICmpInst::ICMP_ULT;
else
return ICmpInst::BAD_ICMP_PREDICATE; // Might be equal.
// Handle some degenerate cases first
if (isa<UndefValue>(C1) || isa<UndefValue>(C2))
- return UndefValue::get(Type::BoolTy);
+ return UndefValue::get(Type::Int1Ty);
// icmp eq/ne(null,GV) -> false/true
if (C1->isNullValue()) {
if (const GlobalValue *GV = dyn_cast<GlobalValue>(C2))
if (!GV->hasExternalWeakLinkage()) // External weak GV can be null
if (pred == ICmpInst::ICMP_EQ)
- return ConstantBool::getFalse();
+ return ConstantInt::getFalse();
else if (pred == ICmpInst::ICMP_NE)
- return ConstantBool::getTrue();
+ return ConstantInt::getTrue();
// icmp eq/ne(GV,null) -> false/true
} else if (C2->isNullValue()) {
if (const GlobalValue *GV = dyn_cast<GlobalValue>(C1))
if (!GV->hasExternalWeakLinkage()) // External weak GV can be null
if (pred == ICmpInst::ICMP_EQ)
- return ConstantBool::getFalse();
+ return ConstantInt::getFalse();
else if (pred == ICmpInst::ICMP_NE)
- return ConstantBool::getTrue();
+ return ConstantInt::getTrue();
}
- if (isa<ConstantBool>(C1) && isa<ConstantBool>(C2)) {
- bool C1Val = cast<ConstantBool>(C1)->getValue();
- bool C2Val = cast<ConstantBool>(C2)->getValue();
- switch (pred) {
- default: assert(0 && "Invalid ICmp Predicate"); return 0;
- case ICmpInst::ICMP_EQ: return ConstantBool::get(C1Val == C2Val);
- case ICmpInst::ICMP_NE: return ConstantBool::get(C1Val != C2Val);
- case ICmpInst::ICMP_ULT:return ConstantBool::get(C1Val < C2Val);
- case ICmpInst::ICMP_UGT:return ConstantBool::get(C1Val > C2Val);
- case ICmpInst::ICMP_ULE:return ConstantBool::get(C1Val <= C2Val);
- case ICmpInst::ICMP_UGE:return ConstantBool::get(C1Val >= C2Val);
- case ICmpInst::ICMP_SLT:return ConstantBool::get(C1Val < C2Val);
- case ICmpInst::ICMP_SGT:return ConstantBool::get(C1Val > C2Val);
- case ICmpInst::ICMP_SLE:return ConstantBool::get(C1Val <= C2Val);
- case ICmpInst::ICMP_SGE:return ConstantBool::get(C1Val >= C2Val);
- }
- } else if (isa<ConstantInt>(C1) && isa<ConstantInt>(C2)) {
+ if (isa<ConstantInt>(C1) && isa<ConstantInt>(C2)) {
if (ICmpInst::isSignedPredicate(ICmpInst::Predicate(pred))) {
int64_t V1 = cast<ConstantInt>(C1)->getSExtValue();
int64_t V2 = cast<ConstantInt>(C2)->getSExtValue();
switch (pred) {
default: assert(0 && "Invalid ICmp Predicate"); return 0;
- case ICmpInst::ICMP_SLT:return ConstantBool::get(V1 < V2);
- case ICmpInst::ICMP_SGT:return ConstantBool::get(V1 > V2);
- case ICmpInst::ICMP_SLE:return ConstantBool::get(V1 <= V2);
- case ICmpInst::ICMP_SGE:return ConstantBool::get(V1 >= V2);
+ case ICmpInst::ICMP_SLT:return ConstantInt::get(Type::Int1Ty, V1 < V2);
+ case ICmpInst::ICMP_SGT:return ConstantInt::get(Type::Int1Ty, V1 > V2);
+ case ICmpInst::ICMP_SLE:return ConstantInt::get(Type::Int1Ty, V1 <= V2);
+ case ICmpInst::ICMP_SGE:return ConstantInt::get(Type::Int1Ty, V1 >= V2);
}
} else {
uint64_t V1 = cast<ConstantInt>(C1)->getZExtValue();
uint64_t V2 = cast<ConstantInt>(C2)->getZExtValue();
switch (pred) {
default: assert(0 && "Invalid ICmp Predicate"); return 0;
- case ICmpInst::ICMP_EQ: return ConstantBool::get(V1 == V2);
- case ICmpInst::ICMP_NE: return ConstantBool::get(V1 != V2);
- case ICmpInst::ICMP_ULT:return ConstantBool::get(V1 < V2);
- case ICmpInst::ICMP_UGT:return ConstantBool::get(V1 > V2);
- case ICmpInst::ICMP_ULE:return ConstantBool::get(V1 <= V2);
- case ICmpInst::ICMP_UGE:return ConstantBool::get(V1 >= V2);
+ case ICmpInst::ICMP_EQ: return ConstantInt::get(Type::Int1Ty, V1 == V2);
+ case ICmpInst::ICMP_NE: return ConstantInt::get(Type::Int1Ty, V1 != V2);
+ case ICmpInst::ICMP_ULT:return ConstantInt::get(Type::Int1Ty, V1 < V2);
+ case ICmpInst::ICMP_UGT:return ConstantInt::get(Type::Int1Ty, V1 > V2);
+ case ICmpInst::ICMP_ULE:return ConstantInt::get(Type::Int1Ty, V1 <= V2);
+ case ICmpInst::ICMP_UGE:return ConstantInt::get(Type::Int1Ty, V1 >= V2);
}
}
} else if (isa<ConstantFP>(C1) && isa<ConstantFP>(C2)) {
double C2Val = cast<ConstantFP>(C2)->getValue();
switch (pred) {
default: assert(0 && "Invalid FCmp Predicate"); return 0;
- case FCmpInst::FCMP_FALSE: return ConstantBool::getFalse();
- case FCmpInst::FCMP_TRUE: return ConstantBool::getTrue();
+ case FCmpInst::FCMP_FALSE: return ConstantInt::getFalse();
+ case FCmpInst::FCMP_TRUE: return ConstantInt::getTrue();
case FCmpInst::FCMP_UNO:
- case FCmpInst::FCMP_ORD: break; // Can't fold these
+ return ConstantInt::get(Type::Int1Ty, C1Val != C1Val || C2Val != C2Val);
+ case FCmpInst::FCMP_ORD:
+ return ConstantInt::get(Type::Int1Ty, C1Val == C1Val && C2Val == C2Val);
case FCmpInst::FCMP_UEQ:
- case FCmpInst::FCMP_OEQ: return ConstantBool::get(C1Val == C2Val);
- case FCmpInst::FCMP_ONE:
- case FCmpInst::FCMP_UNE: return ConstantBool::get(C1Val != C2Val);
- case FCmpInst::FCMP_OLT:
- case FCmpInst::FCMP_ULT: return ConstantBool::get(C1Val < C2Val);
+ if (C1Val != C1Val || C2Val != C2Val)
+ return ConstantInt::getTrue();
+ /* FALL THROUGH */
+ case FCmpInst::FCMP_OEQ:
+ return ConstantInt::get(Type::Int1Ty, C1Val == C2Val);
+ case FCmpInst::FCMP_UNE:
+ if (C1Val != C1Val || C2Val != C2Val)
+ return ConstantInt::getTrue();
+ /* FALL THROUGH */
+ case FCmpInst::FCMP_ONE:
+ return ConstantInt::get(Type::Int1Ty, C1Val != C2Val);
+ case FCmpInst::FCMP_ULT:
+ if (C1Val != C1Val || C2Val != C2Val)
+ return ConstantInt::getTrue();
+ /* FALL THROUGH */
+ case FCmpInst::FCMP_OLT:
+ return ConstantInt::get(Type::Int1Ty, C1Val < C2Val);
case FCmpInst::FCMP_UGT:
- case FCmpInst::FCMP_OGT: return ConstantBool::get(C1Val > C2Val);
- case FCmpInst::FCMP_OLE:
- case FCmpInst::FCMP_ULE: return ConstantBool::get(C1Val <= C2Val);
+ if (C1Val != C1Val || C2Val != C2Val)
+ return ConstantInt::getTrue();
+ /* FALL THROUGH */
+ case FCmpInst::FCMP_OGT:
+ return ConstantInt::get(Type::Int1Ty, C1Val > C2Val);
+ case FCmpInst::FCMP_ULE:
+ if (C1Val != C1Val || C2Val != C2Val)
+ return ConstantInt::getTrue();
+ /* FALL THROUGH */
+ case FCmpInst::FCMP_OLE:
+ return ConstantInt::get(Type::Int1Ty, C1Val <= C2Val);
case FCmpInst::FCMP_UGE:
- case FCmpInst::FCMP_OGE: return ConstantBool::get(C1Val >= C2Val);
+ if (C1Val != C1Val || C2Val != C2Val)
+ return ConstantInt::getTrue();
+ /* FALL THROUGH */
+ case FCmpInst::FCMP_OGE:
+ return ConstantInt::get(Type::Int1Ty, C1Val >= C2Val);
}
} else if (const ConstantPacked *CP1 = dyn_cast<ConstantPacked>(C1)) {
if (const ConstantPacked *CP2 = dyn_cast<ConstantPacked>(C2)) {
Constant *C= ConstantExpr::getFCmp(FCmpInst::FCMP_OEQ,
const_cast<Constant*>(CP1->getOperand(i)),
const_cast<Constant*>(CP2->getOperand(i)));
- if (ConstantBool *CB = dyn_cast<ConstantBool>(C))
+ if (ConstantInt *CB = dyn_cast<ConstantInt>(C))
return CB;
}
// Otherwise, could not decide from any element pairs.
Constant *C = ConstantExpr::getICmp(ICmpInst::ICMP_EQ,
const_cast<Constant*>(CP1->getOperand(i)),
const_cast<Constant*>(CP2->getOperand(i)));
- if (ConstantBool *CB = dyn_cast<ConstantBool>(C))
+ if (ConstantInt *CB = dyn_cast<ConstantInt>(C))
return CB;
}
// Otherwise, could not decide from any element pairs.
case FCmpInst::BAD_FCMP_PREDICATE:
break; // Couldn't determine anything about these constants.
case FCmpInst::FCMP_OEQ: // We know that C1 == C2
- return ConstantBool::get(
+ return ConstantInt::get(Type::Int1Ty,
pred == FCmpInst::FCMP_UEQ || pred == FCmpInst::FCMP_OEQ ||
pred == FCmpInst::FCMP_ULE || pred == FCmpInst::FCMP_OLE ||
pred == FCmpInst::FCMP_UGE || pred == FCmpInst::FCMP_OGE);
case FCmpInst::FCMP_OLT: // We know that C1 < C2
- return ConstantBool::get(
+ return ConstantInt::get(Type::Int1Ty,
pred == FCmpInst::FCMP_UNE || pred == FCmpInst::FCMP_ONE ||
pred == FCmpInst::FCMP_ULT || pred == FCmpInst::FCMP_OLT ||
pred == FCmpInst::FCMP_ULE || pred == FCmpInst::FCMP_OLE);
case FCmpInst::FCMP_OGT: // We know that C1 > C2
- return ConstantBool::get(
+ return ConstantInt::get(Type::Int1Ty,
pred == FCmpInst::FCMP_UNE || pred == FCmpInst::FCMP_ONE ||
pred == FCmpInst::FCMP_UGT || pred == FCmpInst::FCMP_OGT ||
pred == FCmpInst::FCMP_UGE || pred == FCmpInst::FCMP_OGE);
case FCmpInst::FCMP_OLE: // We know that C1 <= C2
// We can only partially decide this relation.
if (pred == FCmpInst::FCMP_UGT || pred == FCmpInst::FCMP_OGT)
- return ConstantBool::getFalse();
+ return ConstantInt::getFalse();
if (pred == FCmpInst::FCMP_ULT || pred == FCmpInst::FCMP_OLT)
- return ConstantBool::getTrue();
+ return ConstantInt::getTrue();
break;
case FCmpInst::FCMP_OGE: // We known that C1 >= C2
// We can only partially decide this relation.
if (pred == FCmpInst::FCMP_ULT || pred == FCmpInst::FCMP_OLT)
- return ConstantBool::getFalse();
+ return ConstantInt::getFalse();
if (pred == FCmpInst::FCMP_UGT || pred == FCmpInst::FCMP_OGT)
- return ConstantBool::getTrue();
+ return ConstantInt::getTrue();
break;
case ICmpInst::ICMP_NE: // We know that C1 != C2
// We can only partially decide this relation.
if (pred == FCmpInst::FCMP_OEQ || pred == FCmpInst::FCMP_UEQ)
- return ConstantBool::getFalse();
+ return ConstantInt::getFalse();
if (pred == FCmpInst::FCMP_ONE || pred == FCmpInst::FCMP_UNE)
- return ConstantBool::getTrue();
+ return ConstantInt::getTrue();
break;
}
} else {
case ICmpInst::ICMP_EQ: // We know the constants are equal!
// If we know the constants are equal, we can decide the result of this
// computation precisely.
- return ConstantBool::get(pred == ICmpInst::ICMP_EQ ||
- pred == ICmpInst::ICMP_ULE ||
- pred == ICmpInst::ICMP_SLE ||
- pred == ICmpInst::ICMP_UGE ||
- pred == ICmpInst::ICMP_SGE);
+ return ConstantInt::get(Type::Int1Ty,
+ pred == ICmpInst::ICMP_EQ ||
+ pred == ICmpInst::ICMP_ULE ||
+ pred == ICmpInst::ICMP_SLE ||
+ pred == ICmpInst::ICMP_UGE ||
+ pred == ICmpInst::ICMP_SGE);
case ICmpInst::ICMP_ULT:
// If we know that C1 < C2, we can decide the result of this computation
// precisely.
- return ConstantBool::get(pred == ICmpInst::ICMP_ULT ||
- pred == ICmpInst::ICMP_NE ||
- pred == ICmpInst::ICMP_ULE);
+ return ConstantInt::get(Type::Int1Ty,
+ pred == ICmpInst::ICMP_ULT ||
+ pred == ICmpInst::ICMP_NE ||
+ pred == ICmpInst::ICMP_ULE);
case ICmpInst::ICMP_SLT:
// If we know that C1 < C2, we can decide the result of this computation
// precisely.
- return ConstantBool::get(pred == ICmpInst::ICMP_SLT ||
- pred == ICmpInst::ICMP_NE ||
- pred == ICmpInst::ICMP_SLE);
+ return ConstantInt::get(Type::Int1Ty,
+ pred == ICmpInst::ICMP_SLT ||
+ pred == ICmpInst::ICMP_NE ||
+ pred == ICmpInst::ICMP_SLE);
case ICmpInst::ICMP_UGT:
// If we know that C1 > C2, we can decide the result of this computation
// precisely.
- return ConstantBool::get(pred == ICmpInst::ICMP_UGT ||
- pred == ICmpInst::ICMP_NE ||
- pred == ICmpInst::ICMP_UGE);
+ return ConstantInt::get(Type::Int1Ty,
+ pred == ICmpInst::ICMP_UGT ||
+ pred == ICmpInst::ICMP_NE ||
+ pred == ICmpInst::ICMP_UGE);
case ICmpInst::ICMP_SGT:
// If we know that C1 > C2, we can decide the result of this computation
// precisely.
- return ConstantBool::get(pred == ICmpInst::ICMP_SGT ||
- pred == ICmpInst::ICMP_NE ||
- pred == ICmpInst::ICMP_SGE);
+ return ConstantInt::get(Type::Int1Ty,
+ pred == ICmpInst::ICMP_SGT ||
+ pred == ICmpInst::ICMP_NE ||
+ pred == ICmpInst::ICMP_SGE);
case ICmpInst::ICMP_ULE:
// If we know that C1 <= C2, we can only partially decide this relation.
- if (pred == ICmpInst::ICMP_UGT) return ConstantBool::getFalse();
- if (pred == ICmpInst::ICMP_ULT) return ConstantBool::getTrue();
+ if (pred == ICmpInst::ICMP_UGT) return ConstantInt::getFalse();
+ if (pred == ICmpInst::ICMP_ULT) return ConstantInt::getTrue();
break;
case ICmpInst::ICMP_SLE:
// If we know that C1 <= C2, we can only partially decide this relation.
- if (pred == ICmpInst::ICMP_SGT) return ConstantBool::getFalse();
- if (pred == ICmpInst::ICMP_SLT) return ConstantBool::getTrue();
+ if (pred == ICmpInst::ICMP_SGT) return ConstantInt::getFalse();
+ if (pred == ICmpInst::ICMP_SLT) return ConstantInt::getTrue();
break;
case ICmpInst::ICMP_UGE:
// If we know that C1 >= C2, we can only partially decide this relation.
- if (pred == ICmpInst::ICMP_ULT) return ConstantBool::getFalse();
- if (pred == ICmpInst::ICMP_UGT) return ConstantBool::getTrue();
+ if (pred == ICmpInst::ICMP_ULT) return ConstantInt::getFalse();
+ if (pred == ICmpInst::ICMP_UGT) return ConstantInt::getTrue();
break;
case ICmpInst::ICMP_SGE:
// If we know that C1 >= C2, we can only partially decide this relation.
- if (pred == ICmpInst::ICMP_SLT) return ConstantBool::getFalse();
- if (pred == ICmpInst::ICMP_SGT) return ConstantBool::getTrue();
+ if (pred == ICmpInst::ICMP_SLT) return ConstantInt::getFalse();
+ if (pred == ICmpInst::ICMP_SGT) return ConstantInt::getTrue();
break;
case ICmpInst::ICMP_NE:
// If we know that C1 != C2, we can only partially decide this relation.
- if (pred == ICmpInst::ICMP_EQ) return ConstantBool::getFalse();
- if (pred == ICmpInst::ICMP_NE) return ConstantBool::getTrue();
+ if (pred == ICmpInst::ICMP_EQ) return ConstantInt::getFalse();
+ if (pred == ICmpInst::ICMP_NE) return ConstantInt::getTrue();
break;
}
}
Constant *llvm::ConstantFoldGetElementPtr(const Constant *C,
- const std::vector<Value*> &IdxList) {
- if (IdxList.size() == 0 ||
- (IdxList.size() == 1 && cast<Constant>(IdxList[0])->isNullValue()))
+ Constant* const *Idxs,
+ unsigned NumIdx) {
+ if (NumIdx == 0 ||
+ (NumIdx == 1 && Idxs[0]->isNullValue()))
return const_cast<Constant*>(C);
if (isa<UndefValue>(C)) {
- const Type *Ty = GetElementPtrInst::getIndexedType(C->getType(), IdxList,
+ const Type *Ty = GetElementPtrInst::getIndexedType(C->getType(),
+ (Value**)Idxs, NumIdx,
true);
assert(Ty != 0 && "Invalid indices for GEP!");
return UndefValue::get(PointerType::get(Ty));
}
- Constant *Idx0 = cast<Constant>(IdxList[0]);
+ Constant *Idx0 = Idxs[0];
if (C->isNullValue()) {
bool isNull = true;
- for (unsigned i = 0, e = IdxList.size(); i != e; ++i)
- if (!cast<Constant>(IdxList[i])->isNullValue()) {
+ for (unsigned i = 0, e = NumIdx; i != e; ++i)
+ if (!Idxs[i]->isNullValue()) {
isNull = false;
break;
}
if (isNull) {
- const Type *Ty = GetElementPtrInst::getIndexedType(C->getType(), IdxList,
+ const Type *Ty = GetElementPtrInst::getIndexedType(C->getType(),
+ (Value**)Idxs, NumIdx,
true);
assert(Ty != 0 && "Invalid indices for GEP!");
return ConstantPointerNull::get(PointerType::get(Ty));
}
-
- if (IdxList.size() == 1) {
- const Type *ElTy = cast<PointerType>(C->getType())->getElementType();
- if (uint32_t ElSize = ElTy->getPrimitiveSize()) {
- // gep null, C is equal to C*sizeof(nullty). If nullty is a known llvm
- // type, we can statically fold this.
- Constant *R = ConstantInt::get(Type::Int32Ty, ElSize);
- // We know R is unsigned, Idx0 is signed because it must be an index
- // through a sequential type (gep pointer operand) which is always
- // signed.
- R = ConstantExpr::getSExtOrBitCast(R, Idx0->getType());
- R = ConstantExpr::getMul(R, Idx0); // signed multiply
- // R is a signed integer, C is the GEP pointer so -> IntToPtr
- return ConstantExpr::getIntToPtr(R, C->getType());
- }
- }
}
if (ConstantExpr *CE = dyn_cast<ConstantExpr>(const_cast<Constant*>(C))) {
LastTy = *I;
if ((LastTy && isa<ArrayType>(LastTy)) || Idx0->isNullValue()) {
- std::vector<Value*> NewIndices;
- NewIndices.reserve(IdxList.size() + CE->getNumOperands());
+ SmallVector<Value*, 16> NewIndices;
+ NewIndices.reserve(NumIdx + CE->getNumOperands());
for (unsigned i = 1, e = CE->getNumOperands()-1; i != e; ++i)
NewIndices.push_back(CE->getOperand(i));
}
NewIndices.push_back(Combined);
- NewIndices.insert(NewIndices.end(), IdxList.begin()+1, IdxList.end());
- return ConstantExpr::getGetElementPtr(CE->getOperand(0), NewIndices);
+ NewIndices.insert(NewIndices.end(), Idxs+1, Idxs+NumIdx);
+ return ConstantExpr::getGetElementPtr(CE->getOperand(0), &NewIndices[0],
+ NewIndices.size());
}
}
// long 0, long 0)
// To: int* getelementptr ([3 x int]* %X, long 0, long 0)
//
- if (CE->isCast() && IdxList.size() > 1 && Idx0->isNullValue())
+ if (CE->isCast() && NumIdx > 1 && Idx0->isNullValue())
if (const PointerType *SPT =
dyn_cast<PointerType>(CE->getOperand(0)->getType()))
if (const ArrayType *SAT = dyn_cast<ArrayType>(SPT->getElementType()))
dyn_cast<ArrayType>(cast<PointerType>(C->getType())->getElementType()))
if (CAT->getElementType() == SAT->getElementType())
return ConstantExpr::getGetElementPtr(
- (Constant*)CE->getOperand(0), IdxList);
+ (Constant*)CE->getOperand(0), Idxs, NumIdx);
}
return 0;
}
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