| /* { dg-do compile { target i?86-*-* x86_64-*-* } } */ |
| /* { dg-options "-msse4" } */ |
| #include <nmmintrin.h> |
| __m128i load (char *); |
| char * |
| foo (const unsigned char *s1, const unsigned char *s2, |
| int bmsk, __m128i frag2) |
| { |
| int len = 0; |
| char *p1 = (char *) s1; |
| char *p2 = (char *) s2; |
| __m128i frag1, fruc1, fruc2, mask1, mask2; |
| int cmp_c, cmp_s; |
| if( !p2[0]) return (char *) s1; |
| if( !p1[0] ) return NULL; |
| if( p2[1]) frag2 = load (p2); |
| frag1 = load (p1); |
| fruc1 = _mm_loadu_si128 ((__m128i *) s1); |
| fruc2 = _mm_loadu_si128 ((__m128i *) s2); |
| mask1 = _mm_cmpistrm(fruc1, frag2, 0x44); |
| mask2 = _mm_cmpistrm(fruc2, frag1, 0x14); |
| frag2 = _mm_blendv_epi8(frag2, mask1, mask2); |
| frag1 = _mm_blendv_epi8(frag1, mask2, mask1); |
| cmp_c = _mm_cmpistrc(frag2, frag1, 0x0c); |
| cmp_s = _mm_cmpistrs(frag2, frag1, 0x0c); |
| if( cmp_s & cmp_c ) |
| __asm("bsfl %[bmsk], %[len]" : [len] "=r" (len) : [bmsk] "r" (bmsk) ); |
| return p2 + len; |
| } |
