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TargetTransformInfo: address calculation parameter for gather/scather

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Address calculation for gather/scather in vectorized code can incur a
significant cost making vectorization unbeneficial. Add infrastructure to add
cost.
Tests and cost model for targets will be in follow-up commits.

radar://14351991

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@186187 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Arnold Schwaighofer
2013-07-12 19:16:02 +00:00
parent ec11706155
commit c0a11edba6
5 changed files with 69 additions and 9 deletions
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4
lib/CodeGen/BasicTargetTransformInfo.cpp
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@@ -108,7 +108,7 @@ public:
virtual unsigned getIntrinsicInstrCost(Intrinsic::ID, Type *RetTy,
ArrayRef<Type*> Tys) const;
virtual unsigned getNumberOfParts(Type *Tp) const;
virtual unsigned getAddressComputationCost(Type *Ty) const;
virtual unsigned getAddressComputationCost(Type *Ty, bool IsComplex) const;
/// @}
};
@@ -489,6 +489,6 @@ unsigned BasicTTI::getNumberOfParts(Type *Tp) const {
return LT.first;
}
unsigned BasicTTI::getAddressComputationCost(Type *Ty) const {
unsigned BasicTTI::getAddressComputationCost(Type *Ty, bool IsComplex) const {
return 0;
}