[llvm-branch-commits] [llvm-branch] r83118 - /llvm/branches/eh-experiment/lib/CodeGen/SelectionDAG/SelectionDAGBuild.cpp

[Bill Wendling]

Author: void
Date: Tue Sep 29 18:39:37 2009
New Revision: 83118

URL: http://llvm.org/viewvc/llvm-project?rev=83118&view=rev
Log:
Don't re-add the register if it's already in there.

Modified:
    llvm/branches/eh-experiment/lib/CodeGen/SelectionDAG/SelectionDAGBuild.cpp

Modified: llvm/branches/eh-experiment/lib/CodeGen/SelectionDAG/SelectionDAGBuild.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/branches/eh-experiment/lib/CodeGen/SelectionDAG/SelectionDAGBuild.cpp?rev=83118&r1=83117&r2=83118&view=diff

==============================================================================
--- llvm/branches/eh-experiment/lib/CodeGen/SelectionDAG/SelectionDAGBuild.cpp (original)
+++ llvm/branches/eh-experiment/lib/CodeGen/SelectionDAG/SelectionDAGBuild.cpp Tue Sep 29 18:39:37 2009
@@ -4002,9 +4002,9 @@
     // TODO: Figure out if we want to do this like this.
     AddCatchInfo(I, MMI, CurMBB);
 
-    // FIXME: Mark exception selector register as live in.  Hack for PR1508.
+    // FIXME: Mark exception selector register as live in. Hack for PR1508.
     unsigned Reg = TLI.getExceptionSelectorRegister();
-    if (Reg) CurMBB->addLiveIn(Reg);
+    if (Reg && !CurMBB->isLiveIn(Reg)) CurMBB->addLiveIn(Reg);
 
     // Insert the EHPERSONALITY instruction.
     SDVTList VTs = DAG.getVTList(TLI.getPointerTy(), MVT::Other);