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From: "crazylht at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/107269] wrong code at -O1 and above with
 "-fno-tree-ccp" on x86_64-linux-gnu
Date: Mon, 17 Oct 2022 03:26:55 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D107269

Hongtao.liu <crazylht at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |crazylht at gmail dot com

--- Comment #3 from Hongtao.liu <crazylht at gmail dot com> ---
Looks like the same issue as PR107172 since below change can also pass all =
the
testcase in the PR.

diff --git a/gcc/config/i386/i386.md b/gcc/config/i386/i386.md
index 8e847520491..be815341af5 100644
--- a/gcc/config/i386/i386.md
+++ b/gcc/config/i386/i386.md
@@ -21335,7 +21335,7 @@ (define_insn "*x86_mov<mode>cc_0_m1_neg"
 (define_expand "x86_mov<mode>cc_0_m1_neg"
   [(parallel
     [(set (match_operand:SWI48 0 "register_operand")
-         (neg:SWI48 (ltu:SWI48 (reg:CCC FLAGS_REG) (const_int 0))))
+         (neg:SWI48 (ltu:SWI48 (reg:CC FLAGS_REG) (const_int 0))))
      (clobber (reg:CC FLAGS_REG))])])

 (define_split=