gcc/testsuite/gcc.target/powerpc/vsx-vectorize-2.c

   1 /* { dg-do compile } */
   2 /* { dg-skip-if "" { powerpc*-*-darwin* } } */
   3 /* { dg-options "-mdejagnu-cpu=power7 -O2 -ftree-vectorize -fno-vect-cost-model -fdump-tree-vect-details" } */
   4 /* { dg-require-effective-target powerpc_vsx } */
   5
   6 /* Taken from vect/vect-95.c.  */
   7 #include <stdlib.h>
   8 #include <stdarg.h>
   9
  10 #define N 256
  11
  12 __attribute__ ((noinline))
  13 void bar (float *pd, float *pa, float *pb, float *pc)
  14 {
  15   int i;
  16
  17   /* check results:  */
  18   for (i = 0; i < N; i++)
  19     {
  20       if (pa[i] != (pb[i] * pc[i]))
  21         abort ();
  22       if (pd[i] != 5.0)
  23         abort ();
  24     }
  25
  26   return;
  27 }
  28
  29
  30 __attribute__ ((noinline)) int
  31 main1 (int n, float * __restrict__ pd, float * __restrict__ pa, float * __restrict__ pb, float * __restrict__ pc)
  32 {
  33   int i;
  34
  35   for (i = 0; i < n; i++)
  36     {
  37       pa[i] = pb[i] * pc[i];
  38       pd[i] = 5.0;
  39     }
  40
  41   bar (pd,pa,pb,pc);
  42
  43   return 0;
  44 }
  45
  46 int main (void)
  47 {
  48   int i;
  49   float a[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
  50   float d[N+1] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
  51   float b[N] = {0,3,6,9,12,15,18,21,24,27,30,33,36,39,42,45,48,51,54,57};
  52   float c[N] = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19};
  53
  54   main1 (N,&d[1],a,b,c);
  55   main1 (N-2,&d[1],a,b,c);
  56
  57   return 0;
  58 }
  59
  60 /* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" } } */
  61 /* { dg-final { scan-tree-dump-times "Alignment of access forced using peeling" 0 "vect" {xfail { {! vect_hw_misalign } || powerpc*-*-* } } } } */
  62 /* { dg-final { scan-tree-dump-times "Alignment of access forced using versioning" 0 "vect" } } */
  63 /* { dg-final { scan-tree-dump-times "Vectorizing an unaligned access" 4 "vect" {xfail { {! vect_hw_misalign } || powerpc*-*-* } } } } */