From f258a15bdfd63b98c33f7d14aa43c7d3b6e57976 Mon Sep 17 00:00:00 2001
From: Evan Cheng <evan.cheng@apple.com>
Date: Thu, 23 Feb 2012 02:58:19 +0000
Subject: Canonicalize (srl (bswap x), 16) to (rotr (bswap x), 16) if the high
 16 bits of x are zero. This optimizes rev + lsr 16 to rev16.

rdar://10750814

llvm-svn: 151230
---
 llvm/test/CodeGen/ARM/rev.ll | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'llvm/test')

diff --git a/llvm/test/CodeGen/ARM/rev.ll b/llvm/test/CodeGen/ARM/rev.ll
index ea44c28fb70..6bb67431198 100644
--- a/llvm/test/CodeGen/ARM/rev.ll
+++ b/llvm/test/CodeGen/ARM/rev.ll
@@ -112,11 +112,11 @@ entry:
   ret i32 %conv3
 }
 
+; rdar://10750814
 define zeroext i16 @test9(i16 zeroext %v) nounwind readnone {
 entry:
 ; CHECK: test9
-; CHECK: rev r0, r0
-; CHECK: lsr r0, r0, #16
+; CHECK: rev16 r0, r0
   %conv = zext i16 %v to i32
   %shr4 = lshr i32 %conv, 8
   %shl = shl nuw nsw i32 %conv, 8
-- 
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