[gcc r15-3968] rs6000: Adjust altivec dot-product backend patterns

[Victor Do Nascimento]

https://gcc.gnu.org/g:113e31cc32450fffbb7cc9b72c8d597b29ad9f0e

commit r15-3968-g113e31cc32450fffbb7cc9b72c8d597b29ad9f0e
Author: Victor Do Nascimento <victor.donascimento@arm.com>
Date:   Wed Jun 5 10:51:29 2024 +0100

    rs6000: Adjust altivec dot-product backend patterns
    
    Following the migration of the dot_prod optab from a direct to a
    conversion-type optab, ensure all back-end patterns incorporate the
    second machine mode into pattern names.
    
    gcc/ChangeLog:
    
            * config/rs6000/altivec.md (udot_prod<mode>): Renamed to...
            (udot_prodv4si<mode>): ...this.
            (sdot_prodv8hi): Renamed to...
            (sdot_prodv4siv8hi): ...this.

Diff:
---
 gcc/config/rs6000/altivec.md | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/gcc/config/rs6000/altivec.md b/gcc/config/rs6000/altivec.md
index e4576c6d0967..00dad4b91f1c 100644
--- a/gcc/config/rs6000/altivec.md
+++ b/gcc/config/rs6000/altivec.md
@@ -3749,7 +3749,7 @@
     }
 })
 
-(define_expand "udot_prod<mode>"
+(define_expand "udot_prodv4si<mode>"
   [(set (match_operand:V4SI 0 "register_operand" "=v")
         (plus:V4SI (match_operand:V4SI 3 "register_operand" "v")
                    (unspec:V4SI [(match_operand:VIshort 1 "register_operand" "v")  
@@ -3761,7 +3761,7 @@
   DONE;
 })
 
-(define_expand "sdot_prodv8hi"
+(define_expand "sdot_prodv4siv8hi"
   [(set (match_operand:V4SI 0 "register_operand" "=v")
         (plus:V4SI (match_operand:V4SI 3 "register_operand" "v")
                    (unspec:V4SI [(match_operand:V8HI 1 "register_operand" "v")