gcc/testsuite/gcc.target/i386/avx-vzeroupper-1.c

   1 /* { dg-do run } */
   2 /* { dg-require-effective-target avx } */
   3 /* { dg-options "-O2 -mavx -mtune=generic" } */
   4
   5 #include "avx-check.h"
   6
   7 #ifdef __x86_64__
   8 #define LEN 16
   9 #else
  10 #define LEN 8
  11 #endif
  12
  13 static void
  14 avx_test (void)
  15 {
  16   __m256i src;
  17
  18   char reg_save[LEN][32];
  19   int i, j;
  20
  21   int s[8] = {1, 2, 3, 4, 5, 6, 7, 8};
  22   int d[8] = {11, 22, 33, 44, 55, 66, 77, 88};
  23
  24   __builtin_memset (reg_save, -1, sizeof reg_save);
  25
  26   src = _mm256_loadu_si256 ((__m256i*) s);
  27
  28   _mm256_zeroupper ();
  29
  30   __asm__ __volatile__ ("vmovdqu %%ymm0,%0":"=m"(reg_save[0]));
  31   __asm__ __volatile__ ("vmovdqu %%ymm1,%0":"=m"(reg_save[1]));
  32   __asm__ __volatile__ ("vmovdqu %%ymm2,%0":"=m"(reg_save[2]));
  33   __asm__ __volatile__ ("vmovdqu %%ymm3,%0":"=m"(reg_save[3]));
  34   __asm__ __volatile__ ("vmovdqu %%ymm4,%0":"=m"(reg_save[4]));
  35   __asm__ __volatile__ ("vmovdqu %%ymm5,%0":"=m"(reg_save[5]));
  36   __asm__ __volatile__ ("vmovdqu %%ymm6,%0":"=m"(reg_save[6]));
  37   __asm__ __volatile__ ("vmovdqu %%ymm7,%0":"=m"(reg_save[7]));
  38 #ifdef __x86_64__
  39   __asm__ __volatile__ ("vmovdqu %%ymm8,%0":"=m"(reg_save[8]));
  40   __asm__ __volatile__ ("vmovdqu %%ymm9,%0":"=m"(reg_save[9]));
  41   __asm__ __volatile__ ("vmovdqu %%ymm10,%0":"=m"(reg_save[10]));
  42   __asm__ __volatile__ ("vmovdqu %%ymm11,%0":"=m"(reg_save[11]));
  43   __asm__ __volatile__ ("vmovdqu %%ymm12,%0":"=m"(reg_save[12]));
  44   __asm__ __volatile__ ("vmovdqu %%ymm13,%0":"=m"(reg_save[13]));
  45   __asm__ __volatile__ ("vmovdqu %%ymm14,%0":"=m"(reg_save[14]));
  46   __asm__ __volatile__ ("vmovdqu %%ymm15,%0":"=m"(reg_save[15]));
  47 #endif
  48
  49   for (i = 0; i < LEN; i++)
  50     for (j = 16; j < 32; j++)
  51       if (reg_save[i][j])
  52         abort ();
  53
  54   _mm256_storeu_si256 ((__m256i*) d, src);
  55
  56 }