diff options
Diffstat (limited to 'llvm/lib/Target/X86/X86TargetTransformInfo.cpp')
| -rw-r--r-- | llvm/lib/Target/X86/X86TargetTransformInfo.cpp | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/llvm/lib/Target/X86/X86TargetTransformInfo.cpp b/llvm/lib/Target/X86/X86TargetTransformInfo.cpp index 508fbe03aeb..1baa49c3c08 100644 --- a/llvm/lib/Target/X86/X86TargetTransformInfo.cpp +++ b/llvm/lib/Target/X86/X86TargetTransformInfo.cpp @@ -963,6 +963,8 @@ int X86TTIImpl::getIntrinsicInstrCost(Intrinsic::ID IID, Type *RetTy, int X86TTIImpl::getVectorInstrCost(unsigned Opcode, Type *Val, unsigned Index) { assert(Val->isVectorTy() && "This must be a vector type"); + Type *ScalarType = Val->getScalarType(); + if (Index != -1U) { // Legalize the type. std::pair<int, MVT> LT = TLI->getTypeLegalizationCost(DL, Val); @@ -976,11 +978,17 @@ int X86TTIImpl::getVectorInstrCost(unsigned Opcode, Type *Val, unsigned Index) { Index = Index % Width; // Floating point scalars are already located in index #0. - if (Val->getScalarType()->isFloatingPointTy() && Index == 0) + if (ScalarType->isFloatingPointTy() && Index == 0) return 0; } - return BaseT::getVectorInstrCost(Opcode, Val, Index); + // Add to the base cost if we know that the extracted element of a vector is + // destined to be moved to and used in the integer register file. + int RegisterFileMoveCost = 0; + if (Opcode == Instruction::ExtractElement && ScalarType->isPointerTy()) + RegisterFileMoveCost = 1; + + return BaseT::getVectorInstrCost(Opcode, Val, Index) + RegisterFileMoveCost; } int X86TTIImpl::getScalarizationOverhead(Type *Ty, bool Insert, bool Extract) { |
