[Bug c++/43122] g++ does not allow overloading operators for sse types (__m128, __m128d)

[pinskia at gmail dot com]

------- Comment #1 from pinskia at gmail dot com  2010-02-19 16:05 -------
Subject: Re:   New: g++ does not allow overloading operators for sse types
(__m128, __m128d)

Well there is already a builtin operator+ for vector types with the  
generic vector support.

Sent from my iPhone

On Feb 19, 2010, at 7:50 AM, "mr dot nuke dot me at gmail dot com"
<gcc-bugzilla@gcc.gnu.org 
 > wrote:

> When trying to overload operators for __m128 and __m128d types. For  
> example,
> the following code:
>
>
> #include <xmmintrin.h>
> #include <stddef.h>
>
> inline __m128 operator + (const __m128 A, const __m128 B)
> {
>        return _mm_add_ps(A, B);
> }
>
> int main()
> {
>        float a[4];
>        float b[4];
>
>        for(size_t i = 0; i < 4; i++)
>        {
>                a[i] = 2 * i;
>                b[i] = 2 * i;
>        }
>        __m128 sseA, sseB;
>        sseA = _mm_loadu_ps(a);
>        sseB = _mm_loadu_ps(b);
>        __m128 sseSum = sseA + sseB;
>        return 0;
> }
>
> Generates
> error: 'float __vector__ operator+(float __vector__, float  
> __vector__)' must
> have an argument of class or enumerated type
>
> Compiler options: -O3 -msse
>
> Both ICL (windows and Linux) and MSVC accept this code and compile it
> correctly.
>
>
> -- 
>           Summary: g++ does not allow overloading operators for sse  
> types
>                    (__m128, __m128d)
>           Product: gcc
>           Version: 4.4.3
>            Status: UNCONFIRMED
>          Severity: blocker
>          Priority: P3
>         Component: c++
>        AssignedTo: unassigned at gcc dot gnu dot org
>        ReportedBy: mr dot nuke dot me at gmail dot com
>
>
> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43122
>


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43122