[Bug target/57807] New: Compile failure with __builtin_ia32_unpcklpd

[jleahy+gcc at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57807

            Bug ID: 57807
           Summary: Compile failure with __builtin_ia32_unpcklpd
           Product: gcc
           Version: 4.8.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: jleahy+gcc at gmail dot com

The following code sample will not compile when "-masm=intel" is set:
(eg. gcc -masm=intel -c foo.c)

typedef double __v2df __attribute__((__vector_size__(16)));
typedef double __m128d __attribute__((__vector_size__(16), __may_alias__));

__m128d _mm_unpacklo_pd(__m128d __A, __m128d __B) {
  return (__m128d)__builtin_ia32_unpcklpd((__v2df)__A, (__v2df)__B);
}

It generates "movhpd xmm0, XMMWORD PTR [rbp-32]", which should be "movhpd xmm0,
QWORD PTR [rbp-32]".