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* [Bug target/107713] New: Wrong implementation atomic_exchange<short> on LoongArch
@ 2022-11-16  3:07 hejinyang at loongson dot cn
  2022-11-16  7:14 ` [Bug target/107713] " hejinyang at loongson dot cn
                   ` (10 more replies)
  0 siblings, 11 replies; 12+ messages in thread
From: hejinyang at loongson dot cn @ 2022-11-16  3:07 UTC (permalink / raw)
  To: gcc-bugs

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107713

            Bug ID: 107713
           Summary: Wrong implementation atomic_exchange<short> on
                    LoongArch
           Product: gcc
           Version: 13.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: hejinyang at loongson dot cn
  Target Milestone: ---

Created attachment 53905
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=53905&action=edit
preprocessed file

Target: loongarch64-unknown-linux-gnu
Configured with: ../configure --prefix=/usr --libdir=/usr/lib64
--build=x86_64-cross-linux-gnu --host=loongarch64-unknown-linux-gnu
--target=loongarch64-unknown-linux-gnu --enable-__cxa_atexit
--enable-threads=posix --with-system-zlib --enable-libstdcxx-time
--enable-checking=release --with-build-sysroot=/opt/mylaos/sysroot
--enable-default-pie --enable-languages=c,c++,fortran,objc,obj-c++,lto
gcc version 13.0.0 20220801 (experimental) (GCC) 

test_of_sync_lock_test_and_set.c:
char lock;
char hello()
{
  return __sync_lock_test_and_set (&lock, 1);
}

Cmdline:
gcc test_of_sync_lock_test_and_set.c -S --save-temps

Output Fragment:
        1:
        ll.w    $r12,$r16,0
        and     $r19,$r12,$r14
        bne     $r19,$r15,2f          <--- Wrong
        and     $r19,$r12,$r17
        or      $r19,$r19,$r18
        sc.w    $r19,$r16,0
        beq     $zero,$r19,1b
        b       3f
        2:
        dbar    0x700
        3:

^ permalink raw reply	[flat|nested] 12+ messages in thread

end of thread, other threads:[~2022-11-20  3:56 UTC | newest]

Thread overview: 12+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2022-11-16  3:07 [Bug target/107713] New: Wrong implementation atomic_exchange<short> on LoongArch hejinyang at loongson dot cn
2022-11-16  7:14 ` [Bug target/107713] " hejinyang at loongson dot cn
2022-11-16 11:27 ` xry111 at gcc dot gnu.org
2022-11-16 11:31 ` xry111 at gcc dot gnu.org
2022-11-16 11:48 ` xry111 at gcc dot gnu.org
2022-11-18  7:05 ` cvs-commit at gcc dot gnu.org
2022-11-18  9:01 ` xry111 at gcc dot gnu.org
2022-11-18  9:13 ` chenglulu at loongson dot cn
2022-11-19 12:37 ` cvs-commit at gcc dot gnu.org
2022-11-19 12:38 ` xry111 at gcc dot gnu.org
2022-11-19 12:39 ` xry111 at gcc dot gnu.org
2022-11-20  3:56 ` chenglulu at loongson dot cn

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