https://gcc.gnu.org/g:a58d770fa1d17ead3c38417b299cce3f19f392db
commit r16-2786-ga58d770fa1d17ead3c38417b299cce3f19f392db
Author: H.J. Lu <hjl.to...@gmail.com>
Date: Fri Aug 1 08:34:49 2025 -0700
x86: Update *one_cmplqi_ext<mode>_1
After
commit 965564eafb721f8000013a3112f1bba8d8fae32b
Author: Richard Sandiford <richard.sandif...@arm.com>
Date: Tue Jul 29 15:58:34 2025 +0100
simplify-rtx: Simplify subregs of logic ops
combine generates
(set (zero_extract:SI (reg/v:SI 101 [ a ])
(const_int 8 [0x8])
(const_int 8 [0x8]))
(not:SI (sign_extract:SI (reg:SI 107 [ b ])
(const_int 8 [0x8])
(const_int 8 [0x8]))))
instead of
(set (zero_extract:SI (reg/v:SI 101 [ a ])
(const_int 8 [0x8])
(const_int 8 [0x8]))
(subreg:SI (not:QI (subreg:QI (sign_extract:SI (reg:SI 107 [ b ])
(const_int 8 [0x8])
(const_int 8 [0x8])) 0)) 0))
Update *one_cmplqi_ext<mode>_1 to support the new pattern.
PR target/121306
* config/i386/i386.md (*one_cmplqi_ext<mode>_1): Updated to
support the new pattern.
Signed-off-by: H.J. Lu <hjl.to...@gmail.com>
Diff:
---
gcc/config/i386/i386.md | 19 +++++++------------
1 file changed, 7 insertions(+), 12 deletions(-)
diff --git a/gcc/config/i386/i386.md b/gcc/config/i386/i386.md
index a50475bdaf4c..a9d1948e4410 100644
--- a/gcc/config/i386/i386.md
+++ b/gcc/config/i386/i386.md
@@ -15351,13 +15351,11 @@
(match_operand 0 "int248_register_operand" "+Q,&Q")
(const_int 8)
(const_int 8))
- (subreg:SWI248
- (not:QI
- (subreg:QI
- (match_operator:SWI248 2 "extract_operator"
- [(match_operand 1 "int248_register_operand" "0,!Q")
- (const_int 8)
- (const_int 8)]) 0)) 0))]
+ (not:SWI248
+ (match_operator:SWI248 2 "extract_operator"
+ [(match_operand 1 "int248_register_operand" "0,!Q")
+ (const_int 8)
+ (const_int 8)])))]
""
"@
not{b}\t%h0
@@ -15370,11 +15368,8 @@
(match_dup 1) (const_int 8) (const_int 8)))
(set (zero_extract:SWI248
(match_dup 0) (const_int 8) (const_int 8))
- (subreg:SWI248
- (not:QI
- (subreg:QI
- (match_op_dup 2
- [(match_dup 0) (const_int 8) (const_int 8)]) 0)) 0))]
+ (not:SWI248
+ (match_op_dup 2 [(match_dup 0) (const_int 8) (const_int 8)])))]
""
[(set_attr "type" "negnot")
(set_attr "mode" "QI")])
