[llvm-commits] [llvm] r139642 - /llvm/trunk/lib/VMCore/PassManager.cpp

[Devang Patel]

Author: dpatel
Date: Tue Sep 13 16:13:29 2011
New Revision: 139642

URL: http://llvm.org/viewvc/llvm-project?rev=139642&view=rev
Log:
Add a check to make sure schedulePass() has not deleted stale RequiredPass.

Modified:
    llvm/trunk/lib/VMCore/PassManager.cpp

Modified: llvm/trunk/lib/VMCore/PassManager.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/VMCore/PassManager.cpp?rev=139642&r1=139641&r2=139642&view=diff
==============================================================================
--- llvm/trunk/lib/VMCore/PassManager.cpp (original)
+++ llvm/trunk/lib/VMCore/PassManager.cpp Tue Sep 13 16:13:29 2011
@@ -1634,9 +1634,11 @@
   FPP->add(RequiredPass);
 
   // Register P as the last user of RequiredPass.
-  SmallVector<Pass *, 1> LU;
-  LU.push_back(RequiredPass);
-  FPP->setLastUser(LU,  P);
+  if (RequiredPass) {
+    SmallVector<Pass *, 1> LU;
+    LU.push_back(RequiredPass);
+    FPP->setLastUser(LU,  P);
+  }
 }
 
 /// Return function pass corresponding to PassInfo PI, that is