[Bug rtl-optimization/43147] SSE shuffle merge

[liranuna at gmail dot com]

------- Comment #1 from liranuna at gmail dot com  2010-02-23 01:37 -------
It appears I am missing a line in the code I posted:

#include <xmmintrin.h>

extern void printv(__m128 m);

int main()
{
        __m128 m = _mm_set_ps(1.0f, 2.0f, 3.0f, 4.0f);
        m = _mm_shuffle_ps(m, m, 0xC9); // Those two shuffles together swap
pairs
        m = _mm_shuffle_ps(m, m, 0x2D); // And could be optimized to 0x4E
        printv(m);

        return 0;
}


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43147