[llvm-commits] [llvm] r123224 - /llvm/trunk/lib/Transforms/Scalar/GVN.cpp

[Chris Lattner]

Author: lattner
Date: Tue Jan 11 02:19:16 2011
New Revision: 123224

URL: http://llvm.org/viewvc/llvm-project?rev=123224&view=rev
Log:
update memdep when an instruction is deleted.  This code isn't
actually reached in the testcase in PR8954, but it's safe and good
practice.


Modified:
    llvm/trunk/lib/Transforms/Scalar/GVN.cpp

Modified: llvm/trunk/lib/Transforms/Scalar/GVN.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Transforms/Scalar/GVN.cpp?rev=123224&r1=123223&r2=123224&view=diff
==============================================================================
--- llvm/trunk/lib/Transforms/Scalar/GVN.cpp (original)
+++ llvm/trunk/lib/Transforms/Scalar/GVN.cpp Tue Jan 11 02:19:16 2011
@@ -1383,8 +1383,11 @@
   }
 
   if (!CanDoPRE) {
-    while (!NewInsts.empty())
-      NewInsts.pop_back_val()->eraseFromParent();
+    while (!NewInsts.empty()) {
+      Instruction *I = NewInsts.pop_back_val();
+      if (MD) MD->removeInstruction(I);
+      I->eraseFromParent();
+    }
     return false;
   }