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

 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
 	from recog_for_combine.
 	(change_zero_ext): New function.

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))