[llvm-commits] [llvm] r83745 - in /llvm/trunk: include/llvm/Transforms/Utils/SSAUpdater.h lib/Transforms/Utils/SSAUpdater.cpp

[Chris Lattner]

Author: lattner
Date: Sat Oct 10 18:41:48 2009
New Revision: 83745

URL: http://llvm.org/viewvc/llvm-project?rev=83745&view=rev
Log:
add a simple helper method.

Modified:
    llvm/trunk/include/llvm/Transforms/Utils/SSAUpdater.h
    llvm/trunk/lib/Transforms/Utils/SSAUpdater.cpp

Modified: llvm/trunk/include/llvm/Transforms/Utils/SSAUpdater.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/Transforms/Utils/SSAUpdater.h?rev=83745&r1=83744&r2=83745&view=diff

==============================================================================
--- llvm/trunk/include/llvm/Transforms/Utils/SSAUpdater.h (original)
+++ llvm/trunk/include/llvm/Transforms/Utils/SSAUpdater.h Sat Oct 10 18:41:48 2009
@@ -60,6 +60,10 @@
   /// 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.

Modified: llvm/trunk/lib/Transforms/Utils/SSAUpdater.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Transforms/Utils/SSAUpdater.cpp?rev=83745&r1=83744&r2=83745&view=diff

==============================================================================
--- llvm/trunk/lib/Transforms/Utils/SSAUpdater.cpp (original)
+++ llvm/trunk/lib/Transforms/Utils/SSAUpdater.cpp Sat Oct 10 18:41:48 2009
@@ -56,6 +56,12 @@
   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) {