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From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/114130] RISC-V: `__atomic_compare_exchange` does not use
 sign-extended value
Date: Wed, 28 Feb 2024 05:14:22 +0000
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X-Bugzilla-Keywords: wrong-code
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D114130

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Last reconfirmed|                            |2024-02-28
             Target|riscv                       |riscv64
             Status|UNCONFIRMED                 |NEW
           Keywords|                            |wrong-code
     Ever confirmed|0                           |1

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
foo(unsigned int*):
        srli    a5,a0,1
        ld      a4,0(a0)
        1:
        lr.w    a3,0(a0)
        bne     a3,a5,1f
        sc.w    a2,a4,0(a0)
        bnez    a2,1b
        1:
        ret

foo:
        ld      a4,0(a0)
        srli    a5,a0,1
         1: lr.w a3,0(a0); bne a3,a5,1f; sc.w a2,a4,0(a0); bnez a2,1b; 1:
        ret=