public inbox for gcc-bugs@sourceware.org
help / color / mirror / Atom feed
* [Bug target/113243] New: mips: Wrong code for pr91323.c
@ 2024-01-05 15:34 xry111 at gcc dot gnu.org
  0 siblings, 0 replies; only message in thread
From: xry111 at gcc dot gnu.org @ 2024-01-05 15:34 UTC (permalink / raw)
  To: gcc-bugs

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113243

            Bug ID: 113243
           Summary: mips: Wrong code for pr91323.c
           Product: gcc
           Version: 14.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: xry111 at gcc dot gnu.org
  Target Milestone: ---

In pr91323.c:

int
__attribute__ ((noinline, noclone))
f3 (float a, float b)
{
  return a < b || a > b;
}

is compiled to:

test(float, float):
        c.ueq.s $fcc5,$f12,$f14
        li      $2,1
        jr      $31
        movt    $2,$0,$fcc5

for mips64r2, and 

test(float, float):
        cmp.ne.s        $f12,$f12,$f14
        bc1nez  $f12,$L4
        li      $2,1
        move    $2,$0
$L4:
        jrc     $31

for mips64r6.  Both are incorrect because both cmp.ne.s and c.ueq.s do not
raise INVALID exception with qNaN inputs, but in C "<" and ">" should raise
INVALID for qNaN inputs.

^ permalink raw reply	[flat|nested] only message in thread
only message in thread, other threads:[~2024-01-05 15:34 UTC | newest]

Thread overview: (only message) (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2024-01-05 15:34 [Bug target/113243] New: mips: Wrong code for pr91323.c xry111 at gcc dot gnu.org

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).