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[ScalarEvolution] Remove uses of PointerType::getElementType.

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This commit is contained in:
Eli Friedman 2021-07-18 13:12:25 -07:00
parent a01ce5e73a
commit fac82d2674
1 changed files with 9 additions and 21 deletions
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30
lib/Analysis/ScalarEvolution.cpp
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@ -533,8 +533,7 @@ bool SCEVUnknown::isSizeOf(Type *&AllocTy) const {
CE->getNumOperands() == 2)
if (ConstantInt *CI = dyn_cast<ConstantInt>(CE->getOperand(1)))
if (CI->isOne()) {
AllocTy = cast<PointerType>(CE->getOperand(0)->getType())
->getElementType();
AllocTy = cast<GEPOperator>(CE)->getSourceElementType();
return true;
}
@ -547,8 +546,7 @@ bool SCEVUnknown::isAlignOf(Type *&AllocTy) const {
if (ConstantExpr *CE = dyn_cast<ConstantExpr>(VCE->getOperand(0)))
if (CE->getOpcode() == Instruction::GetElementPtr &&
CE->getOperand(0)->isNullValue()) {
Type *Ty =
cast<PointerType>(CE->getOperand(0)->getType())->getElementType();
Type *Ty = cast<GEPOperator>(CE)->getSourceElementType();
if (StructType *STy = dyn_cast<StructType>(Ty))
if (!STy->isPacked() &&
CE->getNumOperands() == 3 &&
@ -574,8 +572,7 @@ bool SCEVUnknown::isOffsetOf(Type *&CTy, Constant *&FieldNo) const {
CE->getNumOperands() == 3 &&
CE->getOperand(0)->isNullValue() &&
CE->getOperand(1)->isNullValue()) {
Type *Ty =
cast<PointerType>(CE->getOperand(0)->getType())->getElementType();
Type *Ty = cast<GEPOperator>(CE)->getSourceElementType();
// Ignore vector types here so that ScalarEvolutionExpander doesn't
// emit getelementptrs that index into vectors.
if (Ty->isStructTy() || Ty->isArrayTy()) {
@ -8796,12 +8793,11 @@ static Constant *BuildConstantFromSCEV(const SCEV *V) {
return nullptr;
if (PointerType *PTy = dyn_cast<PointerType>(C->getType())) {
if (PTy->getElementType()->isStructTy())
C2 = ConstantExpr::getIntegerCast(
C2, Type::getInt32Ty(C->getContext()), true);
C = ConstantExpr::getGetElementPtr(PTy->getElementType(), C, C2);
} else
C = ConstantExpr::getGetElementPtr(Type::getInt8Ty(C->getContext()),
C, C2);
} else {
C = ConstantExpr::getAdd(C, C2);
}
}
return C;
}
@ -12587,20 +12583,12 @@ bool ScalarEvolution::getIndexExpressionsFromGEP(
assert(Subscripts.empty() && Sizes.empty() &&
"Expected output lists to be empty on entry to this function.");
assert(GEP && "getIndexExpressionsFromGEP called with a null GEP");
Type *Ty = GEP->getPointerOperandType();
Type *Ty = nullptr;
bool DroppedFirstDim = false;
for (unsigned i = 1; i < GEP->getNumOperands(); i++) {
const SCEV *Expr = getSCEV(GEP->getOperand(i));
if (i == 1) {
if (auto *PtrTy = dyn_cast<PointerType>(Ty)) {
Ty = PtrTy->getElementType();
} else if (auto *ArrayTy = dyn_cast<ArrayType>(Ty)) {
Ty = ArrayTy->getElementType();
} else {
Subscripts.clear();
Sizes.clear();
return false;
}
Ty = GEP->getSourceElementType();
if (auto *Const = dyn_cast<SCEVConstant>(Expr))
if (Const->getValue()->isZero()) {
DroppedFirstDim = true;