https://gcc.gnu.org/g:c5ffa5bd175214d557b2bec0ee3ea6bd64745ac7
commit c5ffa5bd175214d557b2bec0ee3ea6bd64745ac7
Author: Michael Meissner <meiss...@linux.ibm.com>
Date: Tue Jun 10 16:53:16 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 xor => or 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 a848b21bc3e2..1d4b3c970c7f 100644
--- a/gcc/config/rs6000/fusion.md
+++ b/gcc/config/rs6000/fusion.md
@@ -2762,20 +2762,23 @@
;; logical-logical fusion pattern generated by gen_logical_addsubf
;; vector vxor -> vor
(define_insn "*fuse_vxor_vor"
- [(set (match_operand:VM 3 "altivec_register_operand" "=&0,&1,&v,v")
- (ior:VM (xor:VM (match_operand:VM 0 "altivec_register_operand"
"v,v,v,v")
- (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")
+ (ior:VM (xor:VM (match_operand:VM 0 "vector_fusion_operand"
"v,v,v,wa,v")
+ (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)"
"@
vxor %3,%1,%0\;vor %3,%3,%2
vxor %3,%1,%0\;vor %3,%3,%2
vxor %3,%1,%0\;vor %3,%3,%2
+ xxeval %x3,%x2,%x1,%x0,111
vxor %4,%1,%0\;vor %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 vand -> vorc
diff --git a/gcc/config/rs6000/genfusion.pl b/gcc/config/rs6000/genfusion.pl
index b9ff6c99b95e..4ec38beccb9c 100755
--- a/gcc/config/rs6000/genfusion.pl
+++ b/gcc/config/rs6000/genfusion.pl
@@ -234,6 +234,7 @@ sub gen_logical_addsubf
"vorc_vorc" => 79,
"veqv_vnor" => 96,
"vxor_vxor" => 105,
+ "vxor_vor" => 111,
);
KIND: foreach $kind ('scalar','vector') {
