target/6714: x86-64 fails to build libstdc++-v3/libmath/signbitf.c

[thorpej at wasabisystems dot com]

>Number:         6714
>Category:       target
>Synopsis:       x86-64 fails to build libstdc++-v3/libmath/signbitf.c
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sat May 18 01:56:00 PDT 2002
>Closed-Date:
>Last-Modified:
>Originator:     Jason R Thorpe
>Release:        GNU C version 3.2 20020517 (experimental) (x86_64-unknown-netbsd)
>Organization:
>Environment:
i386-netbsdelf host, x86_64-netbsd target
>Description:
Building signbitf.c results in invalid asm code, which gas
chokes on:
/var/tmp//ccJu3znb.s: Assembler messages:
/var/tmp//ccJu3znb.s:25: Error: suffix or operands invalid for `mov'

The code generated for this function is:
__signbitf:
        movl    %xmm0, %eax
        andl    $-2147483648, %eax
        ret
>How-To-Repeat:
Attempt to compile the attached file with the x86_64-netbsd
compiler. I believe the x86_64-linux compiler will also fail
the same way.
>Fix:

>Release-Note:
>Audit-Trail:
>Unformatted:
----gnatsweb-attachment----
Content-Type: application/octet-stream; name="signbitf.i"
Content-Transfer-Encoding: base64
Content-Disposition: attachment; filename="signbitf.i"

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