[Issue 7954] New: x86_64 Windows fibers do not save nonvolatile XMM registers

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=7954

           Summary: x86_64 Windows fibers do not save nonvolatile XMM
                    registers
           Product: D
           Version: D2
          Platform: x86_64
        OS/Version: Windows
            Status: NEW
          Severity: normal
          Priority: P2
         Component: druntime
        AssignedTo: nobody at puremagic.com
        ReportedBy: j.patrick.ernst at gmail.com


--- Comment #0 from Jameson Ernst <j.patrick.ernst at gmail.com> 2012-04-20 16:38:15 PDT ---
According to MSDN (http://msdn.microsoft.com/en-us/library/9z1stfyw.aspx), the
XMM6-XMM15 registers are nonvolatile on x64 Windows. The current implementation
of core.thread.Fiber for this platform does not preserve them.

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