gcc/testsuite/gcc.target/arm/memset-inline-6.c

   1 /* { dg-do run } */
   2 /* { dg-skip-if "Don't inline memset using neon instructions" { ! arm_tune_string_ops_prefer_neon } } */
   3 /* { dg-options "-save-temps -O2 -fno-inline" } */
   4 /* { dg-add-options "arm_neon" } */
   5
   6 #include <string.h>
   7 #include <stdlib.h>
   8
   9 #define LEN (100)
  10 int a[LEN];
  11 int b[LEN];
  12 int c[LEN];
  13 void
  14 foo1 (void)
  15 {
  16     memset (a, -1, 20);
  17     return;
  18 }
  19
  20 void
  21 foo2 (void)
  22 {
  23   memset (b, 1, 24);
  24   return;
  25 }
  26
  27 void
  28 foo3 (void)
  29 {
  30   memset (c, -1, 32);
  31   return;
  32 }
  33
  34 void
  35 check (signed char *arr, int idx, int len, int v)
  36 {
  37   int i;
  38   for (i = 0; i < idx; i++)
  39     if (arr[i] != v)
  40       abort ();
  41
  42   for (i = idx; i < len; i++)
  43     if (arr[i] != 0)
  44       abort ();
  45 }
  46
  47 int
  48 main(void)
  49 {
  50   foo1 ();
  51   check ((signed char *)a, 20, sizeof (a), -1);
  52
  53   foo2 ();
  54   check ((signed char *)b, 24, sizeof (b), 1);
  55
  56   foo3 ();
  57   check ((signed char *)c, 32, sizeof (c), -1);
  58
  59   return 0;
  60 }
  61
  62 /* { dg-final { scan-assembler-not "bl?\[ \t\]+memset" { target { arm_little_endian && arm_neon } } } } */
  63 /* { dg-final { scan-assembler-times "vst1" 3 { target { arm_little_endian && arm_neon } } } } */
  64 /* { dg-final { scan-assembler-times "vstr" 4 { target { arm_little_endian && arm_neon } } } } */
  65
  66