From: H.J. Lu <hjl.tools@gmail.com>
Date: Fri, 1 Aug 2025 15:34:49 +0000 (-0700)
Subject: x86: Update *one_cmplqi_ext<mode>_1
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=a58d770fa1d17ead3c38417b299cce3f19f392db;p=thirdparty%2Fgcc.git

x86: Update *one_cmplqi_ext<mode>_1

After

commit 965564eafb721f8000013a3112f1bba8d8fae32b
Author: Richard Sandiford <richard.sandiford@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.tools@gmail.com>
---

diff --git a/gcc/config/i386/i386.md b/gcc/config/i386/i386.md
index a50475bdaf4..a9d1948e441 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")])