add a simple helper method.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83745 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 6 insertions, 0 deletions

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) {