[gcc(refs/vendors/redhat/heads/gcc-8-branch)] i386: Fix *vec_extractv2sf_1 and *vec_extractv2sf_1 shufps alternative [PR93828]

[gcc(refs/vendors/redhat/heads/gcc-8-branch)] i386: Fix *vec_extractv2sf_1 and *vec_extractv2sf_1 shufps alternative [PR93828]

[Jakub Jelinek]

https://gcc.gnu.org/g:923e9ba9da63bc01efeb690009cf3fa843c467cb

commit 923e9ba9da63bc01efeb690009cf3fa843c467cb
Author: Uros Bizjak <ubizjak@gmail.com>
Date:   Thu Feb 20 22:00:45 2020 +0100

    i386: Fix *vec_extractv2sf_1 and *vec_extractv2sf_1 shufps alternative [PR93828]
    
    shufps moves two of the four packed single-precision floating-point values
    from *destination* operand (first operand) into the low quadword of the
    destination operand.  Match source operand to the destination.
    
            PR target/93828
            * config/i386/mmx.md (*vec_extractv2sf_1): Match source operand
            to destination operand for shufps alternative.
            (*vec_extractv2si_1): Ditto.

Diff:
---
 gcc/ChangeLog          | 7 +++++++
 gcc/config/i386/mmx.md | 8 ++++----
 2 files changed, 11 insertions(+), 4 deletions(-)

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index b83eb4e5d0a..681d02f87c8 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,10 @@
+2020-02-20  Uroš Bizjak  <ubizjak@gmail.com>
+
+	PR target/93828
+	* config/i386/mmx.md (*vec_extractv2sf_1): Match source operand
+	to destination operand for shufps alternative.
+	(*vec_extractv2si_1): Ditto.
+
 2020-02-20  Bernd Edlinger  <bernd.edlinger@hotmail.de>
 
 	* collect2.c (tool_cleanup): Avoid calling not signal-safe
diff --git a/gcc/config/i386/mmx.md b/gcc/config/i386/mmx.md
index f8575c63435..8fb355f03e3 100644
--- a/gcc/config/i386/mmx.md
+++ b/gcc/config/i386/mmx.md
@@ -608,13 +608,13 @@
 (define_insn "*vec_extractv2sf_1"
   [(set (match_operand:SF 0 "nonimmediate_operand"     "=y,x,x,y,x,f,r")
 	(vec_select:SF
-	  (match_operand:V2SF 1 "nonimmediate_operand" " 0,x,x,o,o,o,o")
+	  (match_operand:V2SF 1 "nonimmediate_operand" " 0,x,0,o,o,o,o")
 	  (parallel [(const_int 1)])))]
   "TARGET_MMX && !(MEM_P (operands[0]) && MEM_P (operands[1]))"
   "@
    punpckhdq\t%0, %0
    %vmovshdup\t{%1, %0|%0, %1}
-   shufps\t{$0xe5, %1, %0|%0, %1, 0xe5}
+   shufps\t{$0xe5, %0, %0|%0, %0, 0xe5}
    #
    #
    #
@@ -1302,13 +1302,13 @@
 (define_insn "*vec_extractv2si_1"
   [(set (match_operand:SI 0 "nonimmediate_operand"     "=y,x,x,y,x,r")
 	(vec_select:SI
-	  (match_operand:V2SI 1 "nonimmediate_operand" " 0,x,x,o,o,o")
+	  (match_operand:V2SI 1 "nonimmediate_operand" " 0,x,0,o,o,o")
 	  (parallel [(const_int 1)])))]
   "TARGET_MMX && !(MEM_P (operands[0]) && MEM_P (operands[1]))"
   "@
    punpckhdq\t%0, %0
    %vpshufd\t{$0xe5, %1, %0|%0, %1, 0xe5}
-   shufps\t{$0xe5, %1, %0|%0, %1, 0xe5}
+   shufps\t{$0xe5, %0, %0|%0, %0, 0xe5}
    #
    #
    #"