http://d.puremagic.com/issues/show_bug.cgi?id=9863

           Summary: Incorrect generation of SAHF instruction on 64 bits
           Product: D
           Version: D1 & D2
          Platform: x86_64
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P2
         Component: DMD
        AssignedTo: nobody@puremagic.com
        ReportedBy: bugzilla@digitalmars.com


--- Comment #0 from Walter Bright <bugzilla@digitalmars.com> 2013-04-02 12:21:12 PDT ---
The SAHF instruction does not exist on early 64 bit CPUs, so dmd should not generate it. Example code that does:

bool foo(creal c)
{
    return c != 0;
}

This will cause an illegal instruction fault on older 64 bit CPUs.

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--- Comment #1 from Walter Bright <bugzilla@digitalmars.com> 2013-04-02 13:59:31 PDT ---
https://github.com/D-Programming-Language/dmd/pull/1827

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--- Comment #2 from github-bugzilla@puremagic.com 2013-04-02 20:30:14 PDT ---
Commits pushed to master at https://github.com/D-Programming-Language/dmd

https://github.com/D-Programming-Language/dmd/commit/47765afdf90a1b658dc546e2dfdb576367ce3a7a fix Issue 9863 - Incorrect generation of SAHF instruction on 64 bits

https://github.com/D-Programming-Language/dmd/commit/57005973408fd82adf1f7d544ceae4f53beb7fcd Merge pull request #1827 from WalterBright/fix9863

fix Issue 9863 - Incorrect generation of SAHF instruction on 64 bits

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yebblies <yebblies@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |yebblies@gmail.com


--- Comment #3 from yebblies <yebblies@gmail.com> 2013-04-03 14:31:25 EST ---
Fixed D2.

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Brad Roberts <braddr@puremagic.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
                 CC|                            |braddr@puremagic.com
         Resolution|                            |FIXED


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--- Comment #4 from yebblies <yebblies@gmail.com> 2013-04-03 20:21:18 EST ---
Where is the D1 commit?  Or did this never really apply to D1?

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--- Comment #5 from Walter Bright <bugzilla@digitalmars.com> 2013-04-03 02:28:34 PDT ---
It's been merged into D1:

https://github.com/D-Programming-Language/dmd/commits/dmd-1.x

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--- Comment #6 from yebblies <yebblies@gmail.com> 2013-04-03 20:31:04 EST ---
Ok.

https://github.com/D-Programming-Language/dmd/commit/d22d98cdab8758b6a584beda868478df7820607a

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