6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2024-12-27 13:30:05 +00:00
Code Issues Projects Releases Wiki Activity

Fix a crasher introduced by r127317 that is seen on the bots when using an

Browse Source 
alloca as both integer and floating-point vectors of the same size. Bugpoint is
not cooperating with me, but I'll try to find a manual testcase tomorrow.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127320 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Cameron Zwarich 2011-03-09 07:34:11 +00:00
parent 84dd4fa2e3
commit 032c10fee2
1 changed files with 19 additions and 16 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

35
lib/Transforms/Scalar/ScalarReplAggregates.cpp
View File

@ -681,25 +681,28 @@ ConvertScalar_ExtractValue(Value *FromVal, const Type *ToType,
// access or a bitcast to another vector type of the same size.
if (const VectorType *VTy = dyn_cast<VectorType>(FromVal->getType())) {
if (ToType->isVectorTy()) {
if (isPowerOf2_64(AllocaSize / TD.getTypeAllocSize(ToType))) {
assert(Offset == 0 && "Can't extract a value of a smaller vector type "
"from a nonzero offset.");
unsigned ToTypeSize = TD.getTypeAllocSize(ToType);
if (ToTypeSize == AllocaSize)
return Builder.CreateBitCast(FromVal, ToType, "tmp");
const Type *ToElementTy = cast<VectorType>(ToType)->getElementType();
unsigned Scale = AllocaSize / TD.getTypeAllocSize(ToType);
const Type *CastElementTy = getScaledElementType(ToElementTy, Scale);
unsigned NumCastVectorElements = VTy->getNumElements() / Scale;
assert(isPowerOf2_64(AllocaSize / ToTypeSize) &&
"Partial vector access of an alloca must have a power-of-2 size "
"ratio.");
assert(Offset == 0 && "Can't extract a value of a smaller vector type "
"from a nonzero offset.");
LLVMContext &Context = FromVal->getContext();
const Type *CastTy = VectorType::get(CastElementTy,
NumCastVectorElements);
Value *Cast = Builder.CreateBitCast(FromVal, CastTy, "tmp");
Value *Extract = Builder.CreateExtractElement(Cast, ConstantInt::get(
Type::getInt32Ty(Context), 0), "tmp");
return Builder.CreateBitCast(Extract, ToType, "tmp");
}
const Type *ToElementTy = cast<VectorType>(ToType)->getElementType();
unsigned Scale = AllocaSize / ToTypeSize;
const Type *CastElementTy = getScaledElementType(ToElementTy, Scale);
unsigned NumCastVectorElements = VTy->getNumElements() / Scale;
return Builder.CreateBitCast(FromVal, ToType, "tmp");
LLVMContext &Context = FromVal->getContext();
const Type *CastTy = VectorType::get(CastElementTy,
NumCastVectorElements);
Value *Cast = Builder.CreateBitCast(FromVal, CastTy, "tmp");
Value *Extract = Builder.CreateExtractElement(Cast, ConstantInt::get(
Type::getInt32Ty(Context), 0), "tmp");
return Builder.CreateBitCast(Extract, ToType, "tmp");
}
// Otherwise it must be an element access.