gcc/testsuite/gcc.dg/vect/vect-93.c

   1 /* { dg-require-effective-target vect_float } */
   2 /* { dg-additional-options "--param vect-max-peeling-for-alignment=0" } */
   3
   4 #include <stdarg.h>
   5 #include "tree-vect.h"
   6
   7 #define N1 3001
   8
   9 #if VECTOR_BITS > 256
  10 #define N2 (VECTOR_BITS / 32 + 2)
  11 #else
  12 #define N2 10
  13 #endif
  14
  15 __attribute__ ((noinline)) int
  16 main1 (float *pa)
  17 {
  18   int i;
  19
  20   for (i = 0; i < N1; i++)
  21     {
  22       pa[i] = 2.0;
  23     }
  24
  25   /* check results:  */
  26   for (i = 0; i < N1; i++)
  27     {
  28       if (pa[i] != 2.0)
  29         abort ();
  30     }
  31
  32   for (i = 1; i <= N2; i++)
  33     {
  34       pa[i] = 3.0;
  35     }
  36
  37   /* check results:  */
  38   for (i = 1; i <= N2; i++)
  39     {
  40       if (pa[i] != 3.0)
  41         abort ();
  42     }
  43
  44   return 0;
  45 }
  46
  47 int main (void)
  48 {
  49   int i;
  50   float a[N1] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
  51   float b[N1] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
  52
  53   check_vect ();
  54
  55   /* from bzip2: */
  56   for (i = 0; i < N1; i++)
  57     b[i] = i;
  58   a[0] = 0;
  59   for (i = 1; i <= 256; i++) a[i] = b[i-1];
  60
  61   /* check results:  */
  62   for (i = 1; i <= 256; i++)
  63     {
  64       if (a[i] != i-1)
  65         abort ();
  66     }
  67   if (a[0] != 0)
  68     abort ();
  69
  70   main1 (a);
  71
  72   return 0;
  73 }
  74
  75 /* 2 loops vectorized in main1, 2 loops vectorized in main:
  76    the first loop in main requires vectorization of conversions,
  77    the second loop in main requires vectorization of misaligned load.  */
  78
  79 /* main && main1 together: */
  80 /* { dg-final { scan-tree-dump-times "vectorized 2 loops" 2 "vect" { target powerpc*-*-* i?86-*-* x86_64-*-* } } } */
  81
  82 /* in main1: */
  83 /* { dg-final { scan-tree-dump-times "vectorized 2 loops" 1 "vect" { target !powerpc*-*-* !i?86-*-* !x86_64-*-* } } } */
  84 /* { dg-final { scan-tree-dump-times "vectorized 2 loops" 1 "vect" { target { vect_no_align && { ! vect_hw_misalign } } } } } */
  85
  86 /* in main: */
  87 /* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" { target { vect_no_align && { ! vect_hw_misalign } } } } } */
  88