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[clang][AArch64][SVE] Avoid going through memory for VLAT <-> VLST casts

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This change makes use of the llvm.vector.extract intrinsic to avoid
going through memory when performing bitcasts between vector-length
agnostic types and vector-length specific types.

Depends on D91362

Reviewed By: c-rhodes

Differential Revision: https://reviews.llvm.org/D92761
This commit is contained in:
Joe Ellis 2020-12-16 09:01:28 +00:00
parent e7d3773d91
commit b9b87adf55
1 changed files with 16 additions and 0 deletions
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16
include/llvm/IR/IRBuilder.h
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@ -923,6 +923,22 @@ public:
return CreateBinaryIntrinsic(Intrinsic::maximum, LHS, RHS, nullptr, Name);
}
/// Create a call to the experimental.vector.extract intrinsic.
CallInst *CreateExtractVector(Type *DstType, Value *SrcVec, Value *Idx,
const Twine &Name = "") {
return CreateIntrinsic(Intrinsic::experimental_vector_extract,
{DstType, SrcVec->getType()}, {SrcVec, Idx}, nullptr,
Name);
}
/// Create a call to the experimental.vector.insert intrinsic.
CallInst *CreateInsertVector(Type *DstType, Value *SrcVec, Value *SubVec,
Value *Idx, const Twine &Name = "") {
return CreateIntrinsic(Intrinsic::experimental_vector_insert,
{DstType, SubVec->getType()}, {SrcVec, SubVec, Idx},
nullptr, Name);
}
private:
/// Create a call to a masked intrinsic with given Id.
CallInst *CreateMaskedIntrinsic(Intrinsic::ID Id, ArrayRef<Value *> Ops,