diff options
| -rw-r--r-- | include/llvm/Transforms/Utils/SSAUpdater.h | 4 | ||||
| -rw-r--r-- | lib/Transforms/Utils/SSAUpdater.cpp | 6 |
2 files changed, 10 insertions, 0 deletions
diff --git a/include/llvm/Transforms/Utils/SSAUpdater.h b/include/llvm/Transforms/Utils/SSAUpdater.h index c697d048f1..11b90d4267 100644 --- a/include/llvm/Transforms/Utils/SSAUpdater.h +++ b/include/llvm/Transforms/Utils/SSAUpdater.h @@ -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. diff --git a/lib/Transforms/Utils/SSAUpdater.cpp b/lib/Transforms/Utils/SSAUpdater.cpp index 2fb742bb44..780ee26389 100644 --- a/lib/Transforms/Utils/SSAUpdater.cpp +++ b/lib/Transforms/Utils/SSAUpdater.cpp @@ -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) { |