gcc/testsuite/gcc.target/i386/sse-17.c

   1 /* { dg-do run { target i?86-*-* x86_64-*-* } } */
   2 /* { dg-options "-O2 -msse2" } */
   3 #include <xmmintrin.h>
   4 extern void abort();
   5 int untrue = 0;
   6 typedef union {
   7   __v4sf v;
   8   float f[4];
   9 } u;
  10 void foo (u, u) __attribute__((noinline));
  11 void foo (u a, u b) {
  12   if (b.f[0] != 7.0 || b.f[1] != 8.0 || b.f[2] != 3.0 || b.f[3] != 4.0)
  13     abort();
  14 }
  15 void bar (__v4sf, __v4sf) __attribute__((noinline));
  16 void bar (__v4sf a __attribute((unused)), __v4sf b __attribute((unused))) { untrue = 0;}
  17 __v4sf setupa () __attribute((noinline));
  18 __v4sf setupa () { __v4sf t = { 1.0, 2.0, 3.0, 4.0 }; return t; }
  19 __v4sf setupb () __attribute((noinline));
  20 __v4sf setupb () { __v4sf t = { 5.0, 6.0, 7.0, 8.0 }; return t; }
  21 main() {
  22   u a, b;
  23   a.v = setupa ();
  24   b.v = setupb ();
  25   if (untrue)
  26     bar(a.v, b.v);
  27   b.v = (__v4sf) _mm_movehl_ps ((__m128)a.v, (__m128)b.v);
  28   foo (a, b);
  29   return 0;
  30 }