[Bug inline-asm/11819] New: rejects-valid: GCC inline assembler rejects valid MMX constraints

[bkausbk at web dot de]

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11819

           Summary: rejects-valid: GCC inline assembler rejects valid MMX
                    constraints
           Product: gcc
           Version: 3.3
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: inline-asm
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: bkausbk at web dot de
                CC: gcc-bugs at gcc dot gnu dot org
 GCC build triplet: GCC 3.3
  GCC host triplet: x86 - Cygwin (Windows XP)
GCC target triplet: x86 - Cygwin

GCC 3.3 rejects valid MMX contraints in inline assembler

Following source should be possible:
unsigned long long int a,b;
asm ("\n"
	".intel_syntax noprefix\n"
	"	pxor %[out], %[out]\n"
	"	paddb [%out], %[in]\n"
	: [out] "=y" (a)
	: [in] "y" (b)
);

GCC returns:

mmx.c:2: error: impossible constraint in `asm'