[LLVMbugs] [Bug 1029] NEW: Couldn't allocate output reg for contraint 'r' (AMD64)

[bugzilla-daemon at cs.uiuc.edu]

http://llvm.org/bugs/show_bug.cgi?id=1029

           Summary: Couldn't allocate output reg for contraint 'r' (AMD64)
           Product: libraries
           Version: trunk
          Platform: Other
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Backend: X86
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: rafael.espindola at gmail.com


the code
------------------------------------
void
frame_dummy (void)
{

        void (*register_classes) (void *) = 0;
      __asm ("" : "+r" (register_classes));
}
------------------------------------
produces the following error:
---------------------------------------------
Couldn't allocate output reg for contraint 'r'!
---------------------------------------------



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