http://d.puremagic.com/issues/show_bug.cgi?id=7581

           Summary: Compiler uses wrong instructions to move complex value
                    from ST to xmm registers
           Product: D
           Version: D1 & D2
          Platform: x86_64
        OS/Version: All
            Status: NEW
          Keywords: wrong-code
          Severity: critical
          Priority: P2
         Component: DMD
        AssignedTo: yebblies@gmail.com
        ReportedBy: yebblies@gmail.com


--- Comment #0 from yebblies <yebblies@gmail.com> 2012-02-25 23:43:17 EST ---
Both asserts should pass, but don't because dmd loads the nan onto the fp stack, stores it into memory _as a double_, then loads it into the xmm registers as a double and returns it.  The comparison code treats the xmm regs as if they contain floats, giving the wrong result.

void main()
{
    cfloat a() { return cfloat.nan; }
    assert(a() != 0);
}

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yebblies <yebblies@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |pull


--- Comment #1 from yebblies <yebblies@gmail.com> 2012-02-26 00:24:54 EST ---
https://github.com/D-Programming-Language/dmd/pull/760

This is fixed by pull 760

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--- Comment #2 from yebblies <yebblies@gmail.com> 2012-02-27 03:37:39 EST ---
New pull

https://github.com/D-Programming-Language/dmd/pull/769

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--- Comment #3 from github-bugzilla@puremagic.com 2012-04-24 21:54:30 PDT ---
Commit pushed to dmd-1.x at https://github.com/D-Programming-Language/dmd

https://github.com/D-Programming-Language/dmd/commit/e45925dafe7a9c71fc6eaaa852ed526e01768981
yebblies' fix Issue 7581 - Compiler uses wrong instructions to move complex
value from ST to xmm registers

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--- Comment #4 from github-bugzilla@puremagic.com 2012-04-24 21:54:59 PDT ---
Commit pushed to master at https://github.com/D-Programming-Language/dmd

https://github.com/D-Programming-Language/dmd/commit/0cf3c08642bb0cae819464e6a1aaecfb09b2d03c
yebblies' fix Issue 7581 - Compiler uses wrong instructions to move complex
value from ST to xmm registers

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Walter Bright <bugzilla@digitalmars.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
                 CC|                            |bugzilla@digitalmars.com
         Resolution|                            |FIXED


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