commit c25757ceb6bbbd77d28eb1e07e8d7f557ced33fa
author David Greene <greened@obbligato.org> Wed Jan 20 20:13:31 2010 +0000
committer David Greene <greened@obbligato.org> Wed Jan 20 20:13:31 2010 +0000
tree 97821c12347ff9b2b4c0d15c562fb14eeac1c289
parent 55e98921264b0839c466ae3ae575cc83db4b215e

When XDEBUG is enabled, check for SelectionDAG cycles at some key
points.  This will help us find future problems like the one
described in PR6019.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94019 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Target/X86/X86ISelDAGToDAG.cpp

diff --git a/lib/Target/X86/X86ISelDAGToDAG.cpp b/lib/Target/X86/X86ISelDAGToDAG.cpp
index 13f4030..01cad71 100644
--- a/lib/Target/X86/X86ISelDAGToDAG.cpp
+++ b/lib/Target/X86/X86ISelDAGToDAG.cpp
@@ -598,6 +598,7 @@
     if (RModW) {
       MoveBelowTokenFactor(CurDAG, Load, SDValue(I, 0), Chain);
       ++NumLoadMoved;
+      checkForCycles(I);
     }
   }
 }