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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
This commit is contained in:
Segher Boessenkool 2015-05-12 15:44:25 +02:00 committed by Segher Boessenkool
parent 65fe0167eb
commit f369372b41
2 changed files with 8 additions and 5 deletions
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5
gcc/ChangeLog
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@ -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

8
gcc/config/rs6000/rs6000.md
View File

@ -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))