[gcc(refs/users/meissner/heads/work076)] Revert patch.

[gcc(refs/users/meissner/heads/work076)] Revert patch.

[Michael Meissner]

https://gcc.gnu.org/g:6fa29a1bc39077ad22b14df2f6a6d5b83e7eacf3

commit 6fa29a1bc39077ad22b14df2f6a6d5b83e7eacf3
Author: Michael Meissner <meissner@linux.ibm.com>
Date:   Thu Jan 20 14:34:35 2022 -0500

    Revert patch.
    
    gcc/
    2022-01-20   Michael Meissner  <meissner@linux.ibm.com>
    
            Revert patch.
            PR target/104136
            * config/rs6000/rs6000.cc (rs6000_final_prescan_insn): Do not
            prepend a 'p' for xxspltiw and xxspltidp.
            * config/rs6000/rs6000.md (maybe_prefixed): Indicate that vector
            permute instructions might be prefixed.

Diff:
---
 gcc/ChangeLog.meissner      | 10 +---------
 gcc/config/rs6000/rs6000.cc |  7 ++-----
 gcc/config/rs6000/rs6000.md |  2 +-
 3 files changed, 4 insertions(+), 15 deletions(-)

diff --git a/gcc/ChangeLog.meissner b/gcc/ChangeLog.meissner
index 9c40e20ff7f..9fe603ce991 100644
--- a/gcc/ChangeLog.meissner
+++ b/gcc/ChangeLog.meissner
@@ -5,15 +5,7 @@ work076 patch #3
 	compiler used to build the current compiler defaults to IEEE
 	128-bit long double,  make that the default for this build.
 
-work076 patch #1
-2022-01-20   Michael Meissner  <meissner@linux.ibm.com>
-
-	PR target/104136
-	* config/rs6000/rs6000.cc (rs6000_final_prescan_insn): Do not
-	prepend a 'p' for xxspltiw and xxspltidp.
-	* config/rs6000/rs6000.md (maybe_prefixed): Indicate that vector
-	permute instructions might be prefixed.
-
+work076 patch #1 reverted.
 
 2022-01-19   Michael Meissner  <meissner@linux.ibm.com>
 
diff --git a/gcc/config/rs6000/rs6000.cc b/gcc/config/rs6000/rs6000.cc
index 0a9d62b3dfd..b34962da27d 100644
--- a/gcc/config/rs6000/rs6000.cc
+++ b/gcc/config/rs6000/rs6000.cc
@@ -26661,9 +26661,7 @@ static bool prepend_p_to_next_insn;
 
 /* Define FINAL_PRESCAN_INSN if some processing needs to be done before
    outputting the assembler code.  On the PowerPC, we remember if the current
-   insn is a prefixed insn where we need to emit a 'p' before the insn.  We do
-   not do this for permute type operations (such as XXSPLTIW or XXSPLTIDP),
-   since those operations do not have a non-prefixed format.
+   insn is a prefixed insn where we need to emit a 'p' before the insn.
 
    In addition, if the insn is part of a PC-relative reference to an external
    label optimization, this is recorded also.  */
@@ -26672,8 +26670,7 @@ rs6000_final_prescan_insn (rtx_insn *insn, rtx [], int)
 {
   prepend_p_to_next_insn = (get_attr_maybe_prefixed (insn)
 			    == MAYBE_PREFIXED_YES
-			    && get_attr_prefixed (insn) == PREFIXED_YES
-			    && get_attr_type (insn) != TYPE_VECPERM);
+			    && get_attr_prefixed (insn) == PREFIXED_YES);
   return;
 }
 
diff --git a/gcc/config/rs6000/rs6000.md b/gcc/config/rs6000/rs6000.md
index 890edfc5318..59531b6d07e 100644
--- a/gcc/config/rs6000/rs6000.md
+++ b/gcc/config/rs6000/rs6000.md
@@ -287,7 +287,7 @@
 ;; Whether this insn has a prefixed form and a non-prefixed form.
 (define_attr "maybe_prefixed" "no,yes"
   (if_then_else (eq_attr "type" "load,fpload,vecload,store,fpstore,vecstore,
-  				 integer,add,vecperm")
+  				 integer,add")
 		(const_string "yes")
 		(const_string "no")))