* config/rs6000/rs6000.md (define_split for bswaphi): Don't use

	zero_extract.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@223069 138bc75d-0d04-0410-961f-82ee72b054a4

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index f084795..4f7b7a1 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,5 +1,10 @@
 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.

diff --git a/gcc/config/rs6000/rs6000.md b/gcc/config/rs6000/rs6000.md
index acf890c..4bd16ee 100644 (file)
--- 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))