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[CodeGen] Add isLoadExtLegalOrCustom helper to TargetLowering. 

llvm-svn: 228322
This commit is contained in:
Ahmed Bougacha 2015-02-05 18:15:59 +00:00
parent 7fc4583eda
commit db1da7a54c
1 changed files with 8 additions and 0 deletions
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8
llvm/include/llvm/Target/TargetLowering.h
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@ -574,6 +574,14 @@ public:
getLoadExtAction(ExtType, ValVT, MemVT) == Legal;
}
/// Return true if the specified load with extension is legal or custom
/// on this target.
bool isLoadExtLegalOrCustom(unsigned ExtType, EVT ValVT, EVT MemVT) const {
return ValVT.isSimple() && MemVT.isSimple() &&
(getLoadExtAction(ExtType, ValVT, MemVT) == Legal ||
getLoadExtAction(ExtType, ValVT, MemVT) == Custom);
}
/// Return how this store with truncation should be treated: either it is
/// legal, needs to be promoted to a larger size, needs to be expanded to some
/// other code sequence, or the target has a custom expander for it.