commit 24d79ba2ef120ed9708ac10fc9fa146334df00c7
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 72e69f3cea771809d0bf5f458f36976c190a8e40
parent 0b101b03999b25d17c40daae2b6b4df3ee51d1fb

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


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54378 91177308-0d34-0410-b5e6-96231b3b80d8

lib/CodeGen/UnreachableBlockElim.cpp

diff --git a/lib/CodeGen/UnreachableBlockElim.cpp b/lib/CodeGen/UnreachableBlockElim.cpp
index ca682fd..f1e3aab 100644
--- a/lib/CodeGen/UnreachableBlockElim.cpp
+++ b/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++;
         }