[Bug libc/27600] New: <stdlib.h> doesn't work with -mno-sse -O

[Bug libc/27600] New: <stdlib.h> doesn't work with -mno-sse -O

[hjl.tools at gmail dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=27600

            Bug ID: 27600
           Summary: <stdlib.h> doesn't work with -mno-sse -O
           Product: glibc
           Version: 2.34
            Status: NEW
          Severity: normal
          Priority: P2
         Component: libc
          Assignee: unassigned at sourceware dot org
          Reporter: hjl.tools at gmail dot com
                CC: drepper.fsp at gmail dot com
  Target Milestone: ---
            Target: x86-64

[hjl@gnu-cfl-2 tmp]$ cat x.c
#include <stdlib.h>
[hjl@gnu-cfl-2 tmp]$ gcc -S -mno-sse x.c
[hjl@gnu-cfl-2 tmp]$ gcc -S -mno-sse x.c -O
In file included from /usr/include/stdlib.h:1014,
                 from x.c:1:
/usr/include/bits/stdlib-float.h: In function ‘atof’:
/usr/include/bits/stdlib-float.h:26:1: error: SSE register return with SSE
disabled
   26 | {
      | ^
[hjl@gnu-cfl-2 tmp]$

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[Bug libc/27600] <stdlib.h> doesn't work with -mno-sse -O

[schwab@linux-m68k.org]

https://sourceware.org/bugzilla/show_bug.cgi?id=27600

--- Comment #1 from Andreas Schwab <schwab@linux-m68k.org> ---
Does -mno-sse actually make sense with x86-64 as SSE is a required part of the
ABI?  I think this is a GCC bug.

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[Bug libc/27600] <stdlib.h> doesn't work with -mno-sse -O

[hjl.tools at gmail dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=27600

H.J. Lu <hjl.tools at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           See Also|                            |https://gcc.gnu.org/bugzill
                   |                            |a/show_bug.cgi?id=99652

--- Comment #2 from H.J. Lu <hjl.tools at gmail dot com> ---
GCC bug:

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99652

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[Bug libc/27600] <stdlib.h> doesn't work with -mno-sse -O

[hjl.tools at gmail dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=27600

H.J. Lu <hjl.tools at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |MOVED

--- Comment #3 from H.J. Lu <hjl.tools at gmail dot com> ---
Fixed for GCC 11.

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