[llvm-commits] [llvm] r144303 - /llvm/trunk/include/llvm/CodeGen/SelectionDAGNodes.h

[Owen Anderson]

Author: resistor
Date: Thu Nov 10 13:25:09 2011
New Revision: 144303

URL: http://llvm.org/viewvc/llvm-project?rev=144303&view=rev
Log:
Add additional checking to ensure that MachineMemOperands are never set to null, which can happen in weird circumstances where target intrinsic hooks are implemented incorrectly.

Modified:
    llvm/trunk/include/llvm/CodeGen/SelectionDAGNodes.h

Modified: llvm/trunk/include/llvm/CodeGen/SelectionDAGNodes.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/CodeGen/SelectionDAGNodes.h?rev=144303&r1=144302&r2=144303&view=diff
==============================================================================
--- llvm/trunk/include/llvm/CodeGen/SelectionDAGNodes.h (original)
+++ llvm/trunk/include/llvm/CodeGen/SelectionDAGNodes.h Thu Nov 10 13:25:09 2011
@@ -1685,6 +1685,8 @@
   /// setMemRefs - Assign this MachineSDNodes's memory reference descriptor
   /// list. This does not transfer ownership.
   void setMemRefs(mmo_iterator NewMemRefs, mmo_iterator NewMemRefsEnd) {
+    for (mmo_iterator MMI = NewMemRefs, MME = NewMemRefsEnd; MMI != MME; ++MMI)
+      assert(*MMI && "Null mem ref detected!");
     MemRefs = NewMemRefs;
     MemRefsEnd = NewMemRefsEnd;
   }