gcc/testsuite/gcc.target/i386/sse4_1-insvdi.c

   1 /* { dg-do run } */
   2 /* { dg-require-effective-target lp64 } */
   3 /* { dg-require-effective-target sse4 } */
   4 /* { dg-options "-O2 -msse4.1" } */
   5
   6 #ifndef CHECK_H
   7 #define CHECK_H "sse4_1-check.h"
   8 #endif
   9
  10 #ifndef TEST
  11 #define TEST sse4_1_test
  12 #endif
  13
  14 #include CHECK_H
  15
  16 #include <smmintrin.h>
  17 #include <string.h>
  18
  19 typedef long T __attribute__((may_alias));
  20 struct S { __m128i d; };
  21
  22 __m128i
  23 __attribute__((noinline))
  24 foo (__m128i y, long x)
  25 {
  26   struct S s;
  27
  28   s.d = y;
  29   ((T *) &s.d)[1] = x;
  30   return s.d;
  31 }
  32
  33 static void
  34 TEST (void)
  35 {
  36   union
  37     {
  38       __m128i x;
  39       unsigned int i[4];
  40       unsigned long l[2];
  41     } res, val, tmp;
  42   unsigned long ins[4] = { 3, 4, 5, 6 };
  43
  44   val.i[0] = 0x35251505;
  45   val.i[1] = 0x75655545;
  46   val.i[2] = 0xB5A59585;
  47   val.i[3] = 0xF5E5D5C5;
  48
  49   res.x = foo (val.x, ins[3]);
  50
  51   tmp.x = val.x;
  52   tmp.l[1] = ins[3];
  53   if (memcmp (&tmp, &res, sizeof (tmp)))
  54     abort ();
  55 }