From b2c2a972b075542ab5a02c554ec4a5cc0bcb95a0 Mon Sep 17 00:00:00 2001
From: Bob Wilson <bob.wilson@apple.com>
Date: Wed, 2 Jun 2010 00:16:08 +0000
Subject: [PATCH] Fix an obvious mistake: don't change the operands until all
 of them have been checked and it is safe to proceed with the changes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105304 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/CodeGen/TwoAddressInstructionPass.cpp | 2 --
 1 file changed, 2 deletions(-)

diff --git a/lib/CodeGen/TwoAddressInstructionPass.cpp b/lib/CodeGen/TwoAddressInstructionPass.cpp
index 3f7a610fd00..f61dbc95d1a 100644
--- a/lib/CodeGen/TwoAddressInstructionPass.cpp
+++ b/lib/CodeGen/TwoAddressInstructionPass.cpp
@@ -1200,8 +1200,6 @@ TwoAddressInstructionPass::CoalesceExtSubRegs(SmallVector<unsigned,4> &Srcs,
             Proceed = false;
             break;
           }
-          MO.setReg(DstReg);
-          MO.setSubReg(NewSubIdx);
         }
       if (Proceed)
         for (MachineRegisterInfo::reg_iterator RI = MRI->reg_begin(SrcReg),