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[SVE] Update EmitSVEPredicateCast to take a ScalableVectorType 

Summary:
Removes usage of VectorType::getNumElements identified by test located
at CodeGen/aarch64-sve-intrinsics/acle_sve_abs.c. Since the type is an
SVE predicate vector, it makes sense to specialize the code for scalable
vectors only.

Reviewers: rengolin, efriedma

Reviewed By: efriedma

Subscribers: tschuett, kristof.beyls, rkruppe, psnobl, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D78958
This commit is contained in:
Christopher Tetreault 2020-04-28 10:32:55 -07:00
parent 1e43cab3c6
commit ef3678cfee
2 changed files with 6 additions and 6 deletions
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9
clang/lib/CodeGen/CGBuiltin.cpp
View File

@ -7609,15 +7609,14 @@ static llvm::ScalableVectorType *getSVEVectorForElementType(llvm::Type *EltTy) {
// Reinterpret the input predicate so that it can be used to correctly isolate
// the elements of the specified datatype.
Value *CodeGenFunction::EmitSVEPredicateCast(Value *Pred,
llvm::VectorType *VTy) {
llvm::VectorType *RTy = llvm::VectorType::get(
IntegerType::get(getLLVMContext(), 1), VTy->getElementCount());
llvm::ScalableVectorType *VTy) {
auto *RTy = llvm::VectorType::get(IntegerType::get(getLLVMContext(), 1), VTy);
if (Pred->getType() == RTy)
return Pred;
unsigned IntID;
llvm::Type *IntrinsicTy;
switch (VTy->getNumElements()) {
switch (VTy->getMinNumElements()) {
default:
llvm_unreachable("unsupported element count!");
case 2:
@ -7948,7 +7947,7 @@ Value *CodeGenFunction::EmitAArch64SVEBuiltinExpr(unsigned BuiltinID,
// Predicate results must be converted to svbool_t.
if (auto PredTy = dyn_cast<llvm::VectorType>(Call->getType()))
if (PredTy->getScalarType()->isIntegerTy(1))
Call = EmitSVEPredicateCast(Call, cast<llvm::VectorType>(Ty));
Call = EmitSVEPredicateCast(Call, cast<llvm::ScalableVectorType>(Ty));
return Call;
}

3
clang/lib/CodeGen/CodeGenFunction.h
View File

@ -3919,7 +3919,8 @@ public:
llvm::ScalableVectorType *getSVEType(const SVETypeFlags &TypeFlags);
llvm::ScalableVectorType *getSVEPredType(SVETypeFlags TypeFlags);
llvm::Value *EmitSVEDupX(llvm::Value *Scalar);
llvm::Value *EmitSVEPredicateCast(llvm::Value *Pred, llvm::VectorType *VTy);
llvm::Value *EmitSVEPredicateCast(llvm::Value *Pred,
llvm::ScalableVectorType *VTy);
llvm::Value *EmitSVEGatherLoad(SVETypeFlags TypeFlags,
llvm::SmallVectorImpl<llvm::Value *> &Ops,
unsigned IntID);