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add a little helper function that does PHI translation.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60405 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2008-12-02 07:16:45 +00:00
parent 88d84b245c
commit c7f7c1dc50
2 changed files with 24 additions and 0 deletions
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11
include/llvm/Value.h
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@ -242,6 +242,17 @@ public:
const Value *getUnderlyingObject() const {
return const_cast<Value*>(this)->getUnderlyingObject();
}
/// DoPHITranslation - If this value is a PHI node with CurBB as a its parent,
/// return the value in the PHI node corresponding to PredBB. If not, return
/// ourself. This is useful if you want to know the value something has in a
/// predecessor block.
Value *DoPHITranslation(const BasicBlock *CurBB, const BasicBlock *PredBB);
const Value *DoPHITranslation(const BasicBlock *CurBB,
const BasicBlock *PredBB) const{
return const_cast<Value*>(this)->DoPHITranslation(CurBB, PredBB);
}
};
inline std::ostream &operator<<(std::ostream &OS, const Value &V) {