[gcc(refs/users/meissner/heads/work055)] Revert patch.

[Michael Meissner <meissner@gcc.gnu.org>]

https://gcc.gnu.org/g:c7b5510003c3834360dc842e5ffadf57678981e9

commit c7b5510003c3834360dc842e5ffadf57678981e9
Author: Michael Meissner <meissner@linux.ibm.com>
Date:   Wed Jun 9 13:47:52 2021 -0400

    Revert patch.
    
    gcc/
    2021-06-09  Michael Meissner  <meissner@linux.ibm.com>
    
            Revert patch.
            PR target/99293
            * config/rs6000/vsx.md (vsx_splat_extract_<mode): New insn.

Diff:
---
 gcc/config/rs6000/vsx.md | 18 ------------------
 1 file changed, 18 deletions(-)

diff --git a/gcc/config/rs6000/vsx.md b/gcc/config/rs6000/vsx.md
index 008ffbe5366..bc708113865 100644
--- a/gcc/config/rs6000/vsx.md
+++ b/gcc/config/rs6000/vsx.md
@@ -4515,24 +4515,6 @@
   "lxvdsx %x0,%y1"
   [(set_attr "type" "vecload")])
 
-;; Optimize SPLAT of an extract from a V2DF/V2DI vector with a constant element
-(define_insn "*vsx_splat_extract_<mode>"
-  [(set (match_operand:VSX_D 0 "vsx_register_operand" "=wa")
-	(vec_duplicate:VSX_D
-	 (vec_select:<VS_scalar>
-	  (match_operand:VSX_D 1 "vsx_register_operand" "wa")
-	  (parallel [(match_operand 2 "const_0_to_1_operand" "n")]))))]
-  "VECTOR_MEM_VSX_P (<MODE>mode)"
-{
-  int which_word = INTVAL (operands[2]);
-  if (!BYTES_BIG_ENDIAN)
-    which_word = 1 - which_word;
-
-  operands[3] = GEN_INT (which_word ? 3 : 0);
-  return "xxpermdi %x0,%x1,%x1,%3";
-}
-  [(set_attr "type" "vecperm")])
-
 ;; V4SI splat support
 (define_insn "vsx_splat_v4si"
   [(set (match_operand:V4SI 0 "vsx_register_operand" "=we,we")