gcc/testsuite/gcc.target/i386/sse-1.c

   1 /* PR 12902 */
   2 /* { dg-do compile } */
   3 /* { dg-options "-O1 -msse" } */
   4
   5 #include <xmmintrin.h>
   6
   7 typedef union
   8 {
   9   int i[4];
  10   float f[4];
  11   __m128 v;
  12 } vector4_t;
  13
  14 void
  15 swizzle (const void *a, vector4_t * b, vector4_t * c)
  16 {
  17   __m64 *t = __builtin_assume_aligned (a, 64);
  18
  19   b->v = _mm_loadl_pi (b->v, t);
  20   c->v = _mm_loadl_pi (c->v, t + 1);
  21 }
  22
  23 /* While one legal rendering of each statement would be movaps;movlps;movaps,
  24    we can implmenent this with just movlps;movlps.  Since we do now, anything
  25    less would be a regression.  */
  26 /* { dg-final { scan-assembler-not "movaps" } } */
  27 /* { dg-final { scan-assembler "movlps" } } */