gcc/testsuite/gcc.target/i386/avx2-pr64286.c

   1 /* PR rtl-optimization/64286 */
   2 /* { dg-do run } */
   3 /* { dg-options "-O2 -mavx2" } */
   4 /* { dg-require-effective-target avx2 } */
   5
   6 #include <string.h>
   7 #include <stdlib.h>
   8 #include <x86intrin.h>
   9 #include "avx2-check.h"
  10
  11 __m128i v;
  12 __m256i w;
  13
  14 __attribute__((noinline, noclone)) void
  15 foo (__m128i *p, __m128i *q)
  16 {
  17   __m128i a = _mm_loadu_si128 (p);
  18   __m128i b = _mm_xor_si128 (a, v);
  19   w = _mm256_cvtepu8_epi16 (a);
  20   *q = b;
  21 }
  22
  23 static void
  24 avx2_test (void)
  25 {
  26   v = _mm_set1_epi8 (0x40);
  27   __m128i c = _mm_set_epi8 (16, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1);
  28   __m128i d;
  29   foo (&c, &d);
  30   __m128i e = _mm_set_epi8 (0x50, 0x4f, 0x4e, 0x4d, 0x4c, 0x4b, 0x4a, 0x49,
  31                             0x48, 0x47, 0x46, 0x45, 0x44, 0x43, 0x42, 0x41);
  32   __m256i f = _mm256_set_epi16 (16, 15, 14, 13, 12, 11, 10, 9,
  33                                 8, 7, 6, 5, 4, 3, 2, 1);
  34   if (memcmp (&w, &f, sizeof (w)) != 0
  35       || memcmp (&d, &e, sizeof (d)) != 0)
  36     abort ();
  37 }