[Bug dynamic-link/19289] gcc-6 emits movaps instructions for dl-lookup.o with -O3

["markus at trippelsdorf dot de" <sourceware-bugzilla at sourceware dot org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=19289

--- Comment #4 from Markus Trippelsdorf <markus at trippelsdorf dot de> ---
Comparison left with __attribute__ ((__target__ ("no-mmx,no-sse")))
right without (segfaulting).  

  add    %rsi,%rax                        | add    %rsi,%rax
  add    %rdx,%rax                        | add    %rdx,%rax
  movzbl (%rcx),%edx                      | movzbl (%rcx),%edx
  test   %dl,%dl                          | test   %dl,%dl
  jne    da0 <_dl_lookup_symbol_x+0x60>   | jne    da0
<_dl_lookup_symbol_x+0x60>
  mov    %eax,%ebx                        | mov    %eax,%ebx
  mov    $0xffffffff,%eax                 | pxor   %xmm0,%xmm0
  test   %r13,%r13                        | mov    $0xffffffff,%eax
  movq   $0x0,-0x80(%rbp)                 | test   %r13,%r13
                                          | mov    %rax,-0x88(%rbp)
  mov    %rax,-0x88(%rbp)                 | movaps %xmm0,-0x80(%rbp)
  movq   $0x0,-0x78(%rbp)                 | je     ddf
<_dl_lookup_symbol_x+0x9f>
                                          | testl  $0xfffffffa,0x10(%rbp)
  je     de7 <_dl_lookup_symbol_x+0xa7>   | jne    18e4
<_dl_lookup_symbol_x+0xba4>
  testl  $0xfffffffa,0x10(%rbp)           | mov    -0xb8(%rbp),%rax
  jne    196c <_dl_lookup_symbol_x+0xc2c> | test   %r14,%r14
  mov    -0xb8(%rbp),%rax                 | mov    (%rax),%r9
  test   %r14,%r14                        | jne    1000
<_dl_lookup_symbol_x+0x2c0>
  mov    (%rax),%r9                       | test   %r9,%r9
  jne    1040 <_dl_lookup_symbol_x+0x300> | movq   $0x0,-0xc0(%rbp)

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