commit 3d4c06dd54e42b9119fdb97e5d2ffcc31a0d5f33
author Owen Anderson <resistor@mac.com> Tue Aug 05 22:24:40 2008 +0000
committer Owen Anderson <resistor@mac.com> Tue Aug 05 22:24:40 2008 +0000
tree f850470595dac1963907191e493911b4da22aa16
parent 3dfa168d22162851a8445d589e51608e06ee32b0

Fix breakage on ARM/2008-04-10-ScavengerAssert.ll.

llvm-svn: 54378

llvm/lib/CodeGen/UnreachableBlockElim.cpp

diff --git a/llvm/lib/CodeGen/UnreachableBlockElim.cpp b/llvm/lib/CodeGen/UnreachableBlockElim.cpp
index ca682fd..f1e3aab 100644
--- a/llvm/lib/CodeGen/UnreachableBlockElim.cpp
+++ b/llvm/lib/CodeGen/UnreachableBlockElim.cpp
@@ -137,7 +137,8 @@
             start++;
             phi->eraseFromParent();
             
-            F.getRegInfo().replaceRegWith(Output, Input);
+            if (Input != Output)
+              F.getRegInfo().replaceRegWith(Output, Input);
           } else
             start++;
         }