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add a simple helper method.

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llvm-svn: 83745
This commit is contained in:
Chris Lattner 2009-10-10 23:41:48 +00:00
parent acf73d9839
commit 0aa320ae4d
2 changed files with 10 additions and 0 deletions
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4
include/llvm/Transforms/Utils/SSAUpdater.h
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@ -60,6 +60,10 @@ public:
/// AddAvailableValue - Indicate that a rewritten value is available at the
/// end of the specified block with the specified value.
void AddAvailableValue(BasicBlock *BB, Value *V);
/// HasValueForBlock - Return true if the SSAUpdater already has a value for
/// the specified block.
bool HasValueForBlock(BasicBlock *BB) const;
/// GetValueAtEndOfBlock - Construct SSA form, materializing a value that is
/// live at the end of the specified block.

6
lib/Transforms/Utils/SSAUpdater.cpp
View File

@ -56,6 +56,12 @@ void SSAUpdater::Initialize(Value *ProtoValue) {
PrototypeValue = ProtoValue;
}
/// HasValueForBlock - Return true if the SSAUpdater already has a value for
/// the specified block.
bool SSAUpdater::HasValueForBlock(BasicBlock *BB) const {
return getAvailableVals(AV).count(BB);
}
/// AddAvailableValue - Indicate that a rewritten value is available in the
/// specified block with the specified value.
void SSAUpdater::AddAvailableValue(BasicBlock *BB, Value *V) {