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[TTI][X86][APX] Calculate registers number according to FP or not (#154257)

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This commit is contained in:
Phoebe Wang 2025-08-20 08:26:50 +08:00 committed by GitHub
parent 6462223853
commit 4ae3c77066
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GPG Key ID: B5690EEEBB952194
2 changed files with 18 additions and 10 deletions
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27
llvm/lib/Target/X86/X86TargetTransformInfo.cpp
View File

@ -161,19 +161,26 @@ std::optional<unsigned> X86TTIImpl::getCacheAssociativity(
llvm_unreachable("Unknown TargetTransformInfo::CacheLevel");
}
enum ClassIDEnum { GPRClass = 0, VectorClass = 1, ScalarFPClass = 2 };
unsigned X86TTIImpl::getRegisterClassForType(bool Vector, Type *Ty) const {
return Vector ? VectorClass
: Ty && Ty->isFloatingPointTy() ? ScalarFPClass
: GPRClass;
}
unsigned X86TTIImpl::getNumberOfRegisters(unsigned ClassID) const {
bool Vector = (ClassID == 1);
if (Vector && !ST->hasSSE1())
if (ClassID == VectorClass && !ST->hasSSE1())
return 0;
if (ST->is64Bit()) {
if (Vector && ST->hasAVX512())
return 32;
if (!Vector && ST->hasEGPR())
return 32;
return 16;
}
return 8;
if (!ST->is64Bit())
return 8;
if ((ClassID == GPRClass && ST->hasEGPR()) ||
(ClassID != GPRClass && ST->hasAVX512()))
return 32;
return 16;
}
bool X86TTIImpl::hasConditionalLoadStoreForType(Type *Ty, bool IsStore) const {

1
llvm/lib/Target/X86/X86TargetTransformInfo.h
View File

@ -132,6 +132,7 @@ public:
/// @{
unsigned getNumberOfRegisters(unsigned ClassID) const override;
unsigned getRegisterClassForType(bool Vector, Type *Ty) const override;
bool hasConditionalLoadStoreForType(Type *Ty, bool IsStore) const override;
TypeSize
getRegisterBitWidth(TargetTransformInfo::RegisterKind K) const override;