Fix bug where use still existed in dead code

llvm-svn: 5824
2003-04-21 19:15:26 +00:00 · 2003-04-21 19:15:26 +00:00 · 46371cc500
parent 4b462c0f99
commit 46371cc500
1 changed files with 2 additions and 0 deletions
--- a/llvm/lib/Transforms/Utils/PromoteMemoryToRegister.cpp
+++ b/llvm/lib/Transforms/Utils/PromoteMemoryToRegister.cpp
@ -168,6 +168,8 @@ void PromoteMem2Reg::run() {
    //
    while (!I->use_empty()) {
      Instruction *U = cast<Instruction>(I->use_back());
+      if (!U->use_empty())  // If uses remain in dead code segment...
+        U->replaceAllUsesWith(Constant::getNullValue(U->getType()));
      U->getParent()->getInstList().erase(U);
    }