https://gcc.gnu.org/g:c25a0ce44f75ec67528a2d855ef5229abfe4cf6d
commit c25a0ce44f75ec67528a2d855ef5229abfe4cf6d
Author: Michael Meissner <meiss...@linux.ibm.com>
Date: Tue Jun 10 15:56:02 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/vector andc/and 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 d24837d68d83..b9590b6d1104 100644
--- a/gcc/config/rs6000/fusion.md
+++ b/gcc/config/rs6000/fusion.md
@@ -1892,20 +1892,23 @@
;; logical-logical fusion pattern generated by gen_logical_addsubf
;; vector vandc -> vand
(define_insn "*fuse_vandc_vand"
- [(set (match_operand:VM 3 "altivec_register_operand" "=&0,&1,&v,v")
- (and:VM (and:VM (not: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")
+ (and:VM (and:VM (not: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)"
"@
vandc %3,%1,%0\;vand %3,%3,%2
vandc %3,%1,%0\;vand %3,%3,%2
vandc %3,%1,%0\;vand %3,%3,%2
+ xxeval %x3,%x2,%x1,%x0,2
vandc %4,%1,%0\;vand %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 veqv -> vand
diff --git a/gcc/config/rs6000/genfusion.pl b/gcc/config/rs6000/genfusion.pl
index 351a4d914a4a..23adf98c4056 100755
--- a/gcc/config/rs6000/genfusion.pl
+++ b/gcc/config/rs6000/genfusion.pl
@@ -216,6 +216,7 @@ sub gen_logical_addsubf
my %xxeval_fusions = (
"vand_vand" => 1,
+ "vandc_vand" => 2,
);
KIND: foreach $kind ('scalar','vector') {
