Fix bug: 2002-12-05-MissedConstProp.ll pointed out by Casey Carter

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@4935 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Transforms/Scalar/InstructionCombining.cpp b/lib/Transforms/Scalar/InstructionCombining.cpp
index f57d8b1c36bfbb94dff081061c441c2f1df8584d..cdc1e3b1b0f44224bc19649e528464cf272654f1 100644 (file)
--- a/lib/Transforms/Scalar/InstructionCombining.cpp
+++ b/lib/Transforms/Scalar/InstructionCombining.cpp
@@ -792,7 +792,8 @@ bool InstCombiner::runOnFunction(Function &F) {
       for (unsigned i = 0, e = I->getNumOperands(); i != e; ++i)
         if (Instruction *Op = dyn_cast<Instruction>(I->getOperand(i)))
           WorkList.push_back(Op);
-      I->replaceAllUsesWith(C);
+      ReplaceInstUsesWith(*I, C);
+
       ++NumConstProp;
       BasicBlock::iterator BBI = I;
       if (dceInstruction(BBI)) {