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[ArgPromotion] Remove code for handling typed pointers (NFC)

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This commit is contained in:
Nikita Popov 2023-06-23 16:54:49 +02:00
parent 703c1c7e78
commit 6b83c06aab
1 changed files with 4 additions and 42 deletions
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46
llvm/lib/Transforms/IPO/ArgumentPromotion.cpp
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@ -98,49 +98,11 @@ using OffsetAndArgPart = std::pair<int64_t, ArgPart>;
static Value *createByteGEP(IRBuilderBase &IRB, const DataLayout &DL,
Value *Ptr, Type *ResElemTy, int64_t Offset) {
// For non-opaque pointers, try to create a "nice" GEP if possible, otherwise
// fall back to an i8 GEP to a specific offset.
unsigned AddrSpace = Ptr->getType()->getPointerAddressSpace();
APInt OrigOffset(DL.getIndexTypeSizeInBits(Ptr->getType()), Offset);
if (!Ptr->getType()->isOpaquePointerTy()) {
Type *OrigElemTy = Ptr->getType()->getNonOpaquePointerElementType();
if (OrigOffset == 0 && OrigElemTy == ResElemTy)
return Ptr;
if (OrigElemTy->isSized()) {
APInt TmpOffset = OrigOffset;
Type *TmpTy = OrigElemTy;
SmallVector<APInt> IntIndices =
DL.getGEPIndicesForOffset(TmpTy, TmpOffset);
if (TmpOffset == 0) {
// Try to add trailing zero indices to reach the right type.
while (TmpTy != ResElemTy) {
Type *NextTy = GetElementPtrInst::getTypeAtIndex(TmpTy, (uint64_t)0);
if (!NextTy)
break;
IntIndices.push_back(APInt::getZero(
isa<StructType>(TmpTy) ? 32 : OrigOffset.getBitWidth()));
TmpTy = NextTy;
}
SmallVector<Value *> Indices;
for (const APInt &Index : IntIndices)
Indices.push_back(IRB.getInt(Index));
if (OrigOffset != 0 || TmpTy == ResElemTy) {
Ptr = IRB.CreateGEP(OrigElemTy, Ptr, Indices);
return IRB.CreateBitCast(Ptr, ResElemTy->getPointerTo(AddrSpace));
}
}
}
if (Offset != 0) {
APInt APOffset(DL.getIndexTypeSizeInBits(Ptr->getType()), Offset);
Ptr = IRB.CreateGEP(IRB.getInt8Ty(), Ptr, IRB.getInt(APOffset));
}
if (OrigOffset != 0) {
Ptr = IRB.CreateBitCast(Ptr, IRB.getInt8PtrTy(AddrSpace));
Ptr = IRB.CreateGEP(IRB.getInt8Ty(), Ptr, IRB.getInt(OrigOffset));
}
return IRB.CreateBitCast(Ptr, ResElemTy->getPointerTo(AddrSpace));
return Ptr;
}
/// DoPromotion - This method actually performs the promotion of the specified