From f369372b41c29447cdfdbe227d74a41c4e0327c5 Mon Sep 17 00:00:00 2001
From: Segher Boessenkool <segher@kernel.crashing.org>
Date: Tue, 12 May 2015 15:44:25 +0200
Subject: [PATCH] rs6000.md (define_split for bswaphi): Don't use zero_extract.
* config/rs6000/rs6000.md (define_split for bswaphi): Don't use
zero_extract.
From-SVN: r223069
---
gcc/ChangeLog | 5 +++++
gcc/config/rs6000/rs6000.md | 8 +++-----
2 files changed, 8 insertions(+), 5 deletions(-)
diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index f084795cda95..4f7b7a10ed1f 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2015-05-12 Segher Boessenkool <segher@kernel.crashing.org>
+
+ * config/rs6000/rs6000.md (define_split for bswaphi): Don't use
+ zero_extract.
+
2015-05-12 Segher Boessenkool <segher@kernel.crashing.org>
* combine.c (recog_for_combine_1): New function, factored out
diff --git a/gcc/config/rs6000/rs6000.md b/gcc/config/rs6000/rs6000.md
index acf890cbdf4f..4bd16ee08152 100644
--- a/gcc/config/rs6000/rs6000.md
+++ b/gcc/config/rs6000/rs6000.md
@@ -2184,17 +2184,15 @@
[(set_attr "length" "4,4,12")
(set_attr "type" "load,store,*")])
-;; We are always BITS_BIG_ENDIAN, so the (const_int 16) below is
-;; correct for -mlittle as well as -mbig.
(define_split
[(set (match_operand:HI 0 "gpc_reg_operand" "")
(bswap:HI (match_operand:HI 1 "gpc_reg_operand" "")))
(clobber (match_operand:SI 2 "gpc_reg_operand" ""))]
"reload_completed"
[(set (match_dup 3)
- (zero_extract:SI (match_dup 4)
- (const_int 8)
- (const_int 16)))
+ (and:SI (lshiftrt:SI (match_dup 4)
+ (const_int 8))
+ (const_int 255)))
(set (match_dup 2)
(and:SI (ashift:SI (match_dup 4)
(const_int 8))
--
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