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From: "crazylht at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/112276] [14 Regression] wrong code with -O2 -msse4.2
 since r14-4964-g7eed861e8ca3f5
Date: Mon, 30 Oct 2023 05:49:29 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D112276

--- Comment #4 from Hongtao.liu <crazylht at gmail dot com> ---
-(define_split
-  [(set (match_operand:V2HI 0 "register_operand")
-        (eq:V2HI
-          (eq:V2HI
-            (us_minus:V2HI
-              (match_operand:V2HI 1 "register_operand")
-              (match_operand:V2HI 2 "register_operand"))
-            (match_operand:V2HI 3 "const0_operand"))
-          (match_operand:V2HI 4 "const0_operand")))]
-  "TARGET_SSE4_1"
-  [(set (match_dup 0)
-        (umin:V2HI (match_dup 1) (match_dup 2)))
-   (set (match_dup 0)
-        (eq:V2HI (match_dup 0) (match_dup 2)))])

the splitter is wrong when op1 =3D=3D op2.(the original pattern returns 0, =
after
splitter, it returns 1)
So remove the splitter.=