https://gcc.gnu.org/g:29fb0c6566c9ef1f149d1084dc2581c872649b12
commit 29fb0c6566c9ef1f149d1084dc2581c872649b12
Author: Michael Meissner <meiss...@linux.ibm.com>
Date: Tue Jun 10 17:17:48 2025 -0400
PR target/117251: Add PowerPC XXEVAL support to speed up SHA3 calculations
2025-06-10 Michael Meissner <meiss...@linux.ibm.com>
gcc/
PR target/117251
* config/rs6000/fusion.md: Regenerate.
* config/rs6000/genfusion.pl (gen_logical_addsubf): Add support to
generate vector nor => xor fusion if XXEVAL is supported.
Diff:
---
gcc/config/rs6000/fusion.md | 15 +++++++++------
gcc/config/rs6000/genfusion.pl | 1 +
2 files changed, 10 insertions(+), 6 deletions(-)
diff --git a/gcc/config/rs6000/fusion.md b/gcc/config/rs6000/fusion.md
index c55e9d4abd67..1f1756dbe63e 100644
--- a/gcc/config/rs6000/fusion.md
+++ b/gcc/config/rs6000/fusion.md
@@ -3017,20 +3017,23 @@
;; logical-logical fusion pattern generated by gen_logical_addsubf
;; vector vnor -> vxor
(define_insn "*fuse_vnor_vxor"
- [(set (match_operand:VM 3 "altivec_register_operand" "=&0,&1,&v,v")
- (xor:VM (and:VM (not:VM (match_operand:VM 0 "altivec_register_operand"
"v,v,v,v"))
- (not:VM (match_operand:VM 1
"altivec_register_operand" "v,v,v,v")))
- (match_operand:VM 2 "altivec_register_operand" "v,v,v,v")))
- (clobber (match_scratch:VM 4 "=X,X,X,&v"))]
+ [(set (match_operand:VM 3 "vector_fusion_operand" "=&0,&1,&v,wa,v")
+ (xor:VM (and:VM (not:VM (match_operand:VM 0 "vector_fusion_operand"
"v,v,v,wa,v"))
+ (not:VM (match_operand:VM 1 "vector_fusion_operand"
"v,v,v,wa,v")))
+ (match_operand:VM 2 "vector_fusion_operand" "v,v,v,wa,v")))
+ (clobber (match_scratch:VM 4 "=X,X,X,X,&v"))]
"(TARGET_P10_FUSION)"
"@
vnor %3,%1,%0\;vxor %3,%3,%2
vnor %3,%1,%0\;vxor %3,%3,%2
vnor %3,%1,%0\;vxor %3,%3,%2
+ xxeval %x3,%x2,%x1,%x0,135
vnor %4,%1,%0\;vxor %3,%4,%2"
[(set_attr "type" "fused_vector")
(set_attr "cost" "6")
- (set_attr "length" "8")])
+ (set_attr "length" "8")
+ (set_attr "prefixed" "*,*,*,yes,*")
+ (set_attr "isa" "*,*,*,xxeval,*")])
;; logical-logical fusion pattern generated by gen_logical_addsubf
;; vector vor -> vxor
diff --git a/gcc/config/rs6000/genfusion.pl b/gcc/config/rs6000/genfusion.pl
index 58f900640bef..0fea2d6d8482 100755
--- a/gcc/config/rs6000/genfusion.pl
+++ b/gcc/config/rs6000/genfusion.pl
@@ -239,6 +239,7 @@ sub gen_logical_addsubf
"vor_vxor" => 120,
"vor_vor" => 127,
"vor_vnor" => 128,
+ "vnor_vxor" => 135,
);
KIND: foreach $kind ('scalar','vector') {
