From 2d4b60f3a40d4a1d60d43f5bb94c3c3dd19a6fc5 Mon Sep 17 00:00:00 2001
From: Anton Korobeynikov <asl@math.spbu.ru>
Date: Sat, 8 Oct 2011 08:38:45 +0000
Subject: [PATCH] Disable ABS optimization for Thumb1 target, we don't have
 necessary instructions there.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141481 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Target/ARM/ARMISelDAGToDAG.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/lib/Target/ARM/ARMISelDAGToDAG.cpp b/lib/Target/ARM/ARMISelDAGToDAG.cpp
index 8b34fa11f47..5ee009c04c5 100644
--- a/lib/Target/ARM/ARMISelDAGToDAG.cpp
+++ b/lib/Target/ARM/ARMISelDAGToDAG.cpp
@@ -2322,6 +2322,9 @@ SDNode *ARMDAGToDAGISel::SelectABSOp(SDNode *N){
   if (DisableARMIntABS)
     return NULL;
 
+  if (Subtarget->isThumb1Only())
+    return NULL;
+
   if (XORSrc0.getOpcode() != ISD::ADD ||
     XORSrc1.getOpcode() != ISD::SRA)
     return NULL;
-- 
2.34.1