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Move vector type merging to a separate function in preparation for it getting

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more complicated.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127316 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Cameron Zwarich 2011-03-09 05:43:01 +00:00
parent 46033b0be1
commit c9ecd14cee
1 changed files with 23 additions and 12 deletions
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35
lib/Transforms/Scalar/ScalarReplAggregates.cpp
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@ -251,6 +251,7 @@ public:
private:
bool CanConvertToScalar(Value *V, uint64_t Offset);
void MergeInType(const Type *In, uint64_t Offset);
bool MergeInVectorType(const VectorType *VInTy, uint64_t Offset);
void ConvertUsesToScalar(Value *Ptr, AllocaInst *NewAI, uint64_t Offset);
Value *ConvertScalar_ExtractValue(Value *NV, const Type *ToType,
@ -314,19 +315,8 @@ void ConvertToScalarInfo::MergeInType(const Type *In, uint64_t Offset) {
// If the In type is a vector that is the same size as the alloca, see if it
// matches the existing VecTy.
if (const VectorType *VInTy = dyn_cast<VectorType>(In)) {
// Remember if we saw a vector type.
HadAVector = true;
if (VInTy->getBitWidth()/8 == AllocaSize && Offset == 0) {
// If we're storing/loading a vector of the right size, allow it as a
// vector. If this the first vector we see, remember the type so that
// we know the element size. If this is a subsequent access, ignore it
// even if it is a differing type but the same size. Worst case we can
// bitcast the resultant vectors.
if (VectorTy == 0)
VectorTy = VInTy;
if (MergeInVectorType(VInTy, Offset))
return;
}
} else if (In->isFloatTy() || In->isDoubleTy() ||
(In->isIntegerTy() && In->getPrimitiveSizeInBits() >= 8 &&
isPowerOf2_32(In->getPrimitiveSizeInBits()))) {
@ -349,6 +339,27 @@ void ConvertToScalarInfo::MergeInType(const Type *In, uint64_t Offset) {
VectorTy = Type::getVoidTy(In->getContext());
}
/// MergeInVectorType - Handles the vector case of MergeInType, returning true
/// if the type was successfully merged and false otherwise.
bool ConvertToScalarInfo::MergeInVectorType(const VectorType *VInTy,
uint64_t Offset) {
// Remember if we saw a vector type.
HadAVector = true;
if (VInTy->getBitWidth()/8 == AllocaSize && Offset == 0) {
// If we're storing/loading a vector of the right size, allow it as a
// vector. If this the first vector we see, remember the type so that
// we know the element size. If this is a subsequent access, ignore it
// even if it is a differing type but the same size. Worst case we can
// bitcast the resultant vectors.
if (VectorTy == 0)
VectorTy = VInTy;
return true;
}
return false;
}
/// CanConvertToScalar - V is a pointer. If we can convert the pointee and all
/// its accesses to a single vector type, return true and set VecTy to
/// the new type. If we could convert the alloca into a single promotable