gcc/testsuite/gcc.target/i386/pr71077.c

   1 /* { dg-do run }  */
   2 /* { dg-require-effective-target avx2 }  */
   3 /* { dg-options "-O3 -mavx2" }  */
   4
   5 #include "avx2-check.h"
   6
   7 typedef unsigned int ui;
   8 ui x[32*32];
   9 ui y[32];
  10 ui z[32];
  11 void __attribute__ ((noinline, noclone)) foo (ui n, ui z)
  12 {
  13   ui i, b;
  14   ui v;
  15  for (i = 0; i< n; i++)
  16   {
  17     v = y[i];
  18     if (v) {
  19       for (b = 0; b < 32; b++)
  20         if ((v >> b) & 1)
  21           x[i*32 +b] = z;
  22       y[i] = 0;
  23     }
  24   }
  25 }
  26
  27 static void
  28 avx2_test (void)
  29 {
  30   int i;
  31   unsigned int val;
  32   for (i = 0; i<32; i++)
  33     {
  34       val = 1U << i;
  35       y[i] = (i & 1)? 0 : val;
  36       z[i] = i;
  37     }
  38   foo (32, 10);
  39   for (i=0; i<1024; i+=66)
  40     if (x[i] != 10)
  41       __builtin_abort ();
  42 }