From 1043e173bcb2b9b7947cd2c5f253075e6415df1c Mon Sep 17 00:00:00 2001
From: Owen Anderson <resistor@mac.com>
Date: Fri, 12 Aug 2011 19:41:29 +0000
Subject: [PATCH] Specify fixed bit in the LDRBT encoding, which allows us to
 distinguish it from certain USAT16 encodings.

llvm-svn: 137494
---
 llvm/lib/Target/ARM/ARMInstrInfo.td | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/llvm/lib/Target/ARM/ARMInstrInfo.td b/llvm/lib/Target/ARM/ARMInstrInfo.td
index 2a029ddb200a..44acbdc70540 100644
--- a/llvm/lib/Target/ARM/ARMInstrInfo.td
+++ b/llvm/lib/Target/ARM/ARMInstrInfo.td
@@ -2164,7 +2164,9 @@ def LDRBT_POST_REG : AI2ldstidx<1, 1, 0, (outs GPR:$Rt, GPR:$Rn_wb),
   let Inst{23} = offset{12};
   let Inst{21} = 1; // overwrite
   let Inst{19-16} = addr;
-  let Inst{11-0} = offset{11-0};
+  let Inst{11-5} = offset{11-5};
+  let Inst{4} = 0;
+  let Inst{3-0} = offset{3-0};
   let DecoderMethod = "DecodeAddrMode2IdxInstruction";
 }