[cfe-commits] r131268 - in /cfe/trunk/lib/Headers: emmintrin.h xmmintrin.h

[Eli Friedman]

On Thu, May 12, 2011 at 5:11 PM, Bill Wendling <isanbard at gmail.com> wrote:
> Author: void
> Date: Thu May 12 19:11:39 2011
> New Revision: 131268
>
> URL: http://llvm.org/viewvc/llvm-project?rev=131268&view=rev
> Log:
> Represent the unaligned loads natively. These are converted into a call to the
> correct unaligned load.
>
> Modified:
>    cfe/trunk/lib/Headers/emmintrin.h
>    cfe/trunk/lib/Headers/xmmintrin.h
>
> Modified: cfe/trunk/lib/Headers/emmintrin.h
> URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Headers/emmintrin.h?rev=131268&r1=131267&r2=131268&view=diff
> ==============================================================================
> --- cfe/trunk/lib/Headers/emmintrin.h (original)
> +++ cfe/trunk/lib/Headers/emmintrin.h Thu May 12 19:11:39 2011
> @@ -466,7 +466,10 @@
>  static __inline__ __m128d __attribute__((__always_inline__, __nodebug__))
>  _mm_loadu_pd(double const *dp)
>  {
> -  return __builtin_ia32_loadupd(dp);
> +  struct __loadu_pd {
> +    __m128d v;
> +  } __attribute__((packed));
> +  return ((struct __loadu_pd*)dp)->v;
>  }
>
>  static __inline__ __m128d __attribute__((__always_inline__, __nodebug__))
> @@ -1011,7 +1014,10 @@
>  static __inline__ __m128i __attribute__((__always_inline__, __nodebug__))
>  _mm_loadu_si128(__m128i const *p)
>  {
> -  return (__m128i)__builtin_ia32_loaddqu((char const *)p);
> +  struct __loadu_si128 {
> +    __m128i v;
> +  } __attribute__((packed));
> +  return ((struct __loadu_si128*)p)->v;
>  }

I think you also need to mark the struct may_alias.

-Eli