From cb31193670a75c2a7204b3f0cf2b74977521629f Mon Sep 17 00:00:00 2001
From: Jim Grosbach <grosbach@apple.com>
Date: Tue, 26 Jul 2011 17:44:46 +0000
Subject: [PATCH] ARM fix for LDREX source register encoding.

rdar://9842203

llvm-svn: 136102
---
 llvm/lib/Target/ARM/ARMInstrFormats.td | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/llvm/lib/Target/ARM/ARMInstrFormats.td b/llvm/lib/Target/ARM/ARMInstrFormats.td
index 3c1ff6c7d0ce..23c306de7726 100644
--- a/llvm/lib/Target/ARM/ARMInstrFormats.td
+++ b/llvm/lib/Target/ARM/ARMInstrFormats.td
@@ -418,11 +418,11 @@ class AIldrex<bits<2> opcod, dag oops, dag iops, InstrItinClass itin,
   : I<oops, iops, AddrModeNone, 4, IndexModeNone, LdStExFrm, itin,
       opc, asm, "", pattern> {
   bits<4> Rt;
-  bits<4> Rn;
+  bits<4> addr;
   let Inst{27-23} = 0b00011;
   let Inst{22-21} = opcod;
   let Inst{20}    = 1;
-  let Inst{19-16} = Rn;
+  let Inst{19-16} = addr;
   let Inst{15-12} = Rt;
   let Inst{11-0}  = 0b111110011111;
 }