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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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lib/Analysis/TargetTransformInfo.cpp
+4 -3
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@@ -206,8 +206,9 @@ unsigned TargetTransformInfo::getNumberOfParts(Type *Tp) const {
return PrevTTI->getNumberOfParts(Tp);
}
unsigned TargetTransformInfo::getAddressComputationCost(Type *Tp) const {
return PrevTTI->getAddressComputationCost(Tp);
unsigned TargetTransformInfo::getAddressComputationCost(Type *Tp,
bool IsComplex) const {
return PrevTTI->getAddressComputationCost(Tp, IsComplex);
}
namespace {
@@ -559,7 +560,7 @@ struct NoTTI : ImmutablePass, TargetTransformInfo {
return 0;
}
unsigned getAddressComputationCost(Type *Tp) const {
unsigned getAddressComputationCost(Type *Tp, bool) const {
return 0;
}
};