gcc/testsuite/gcc.dg/vect/slp-perm-12.c

   1 /* { dg-require-effective-target vect_int } */
   2 /* { dg-require-effective-target vect_pack_trunc } */
   3 /* { dg-additional-options "--param vect-epilogues-nomask=0" } */
   4 /* { dg-additional-options "-msse4" { target { i?86-*-* x86_64-*-* } } } */
   5
   6 #include "tree-vect.h"
   7
   8 extern void abort (void);
   9
  10 unsigned char a[64];
  11 short b[88];
  12
  13 void __attribute__((noinline))
  14 test(unsigned char * __restrict__ dst, short * __restrict__ tptr)
  15 {
  16   int i;
  17   for (i = 0; i < 8; i++)
  18     {
  19       dst[0] = (tptr[0] - tptr[0 + 3]);
  20       dst[1] = (tptr[1] - tptr[1 + 3]);
  21       dst[2] = (tptr[2] - tptr[2 + 3]);
  22       dst[3] = (tptr[3] - tptr[3 + 3]);
  23       dst[4] = (tptr[4] - tptr[4 + 3]);
  24       dst[5] = (tptr[5] - tptr[5 + 3]);
  25       dst[6] = (tptr[6] - tptr[6 + 3]);
  26       dst[7] = (tptr[7] - tptr[7 + 3]);
  27       dst += 8;
  28       tptr += 11;
  29     }
  30 }
  31
  32 int main()
  33 {
  34   int i;
  35
  36   check_vect ();
  37
  38   for (i = 0; i < 88; ++i)
  39     {
  40       b[i] = i;
  41       __asm__ volatile ("");
  42     }
  43
  44   test (a, b);
  45
  46 #pragma GCC novector
  47   for (i = 0; i < 64; ++i)
  48     if (a[i] != 253)
  49       abort ();
  50
  51   return 0;
  52 }
  53
  54 /* { dg-final { scan-tree-dump-times "vectorizing stmts using SLP" 1 "vect" { target { vect_perm && vect_hw_misalign } } } } */