gcc/testsuite/gcc.dg/vect/vect-novector-pragma.c

   1 /* { dg-do compile } */
   2 /* { dg-require-effective-target vect_int } */
   3
   4 void f1 (int * restrict a, int * restrict b, int n)
   5 {
   6 #pragma GCC novector
   7     for (int i = 0; i < (n & -8); i++)
   8       a[i] += b[i];
   9 }
  10
  11 void f2 (int * restrict a, int * restrict b, int n)
  12 {
  13 #pragma GCC novector
  14 #pragma GCC ivdep
  15 #pragma GCC unroll 2
  16     for (int i = 0; i < (n & -8); i++)
  17       a[i] += b[i];
  18 }
  19
  20 void f3 (int * restrict a, int * restrict b, int n)
  21 {
  22 #pragma GCC ivdep
  23 #pragma GCC novector
  24 #pragma GCC unroll 2
  25     for (int i = 0; i < (n & -8); i++)
  26       a[i] += b[i];
  27 }
  28
  29 void f4 (int * restrict a, int * restrict b, int n)
  30 {
  31 #pragma GCC ivdep
  32 #pragma GCC unroll 2
  33 #pragma GCC novector
  34     for (int i = 0; i < (n & -8); i++)
  35       a[i] += b[i];
  36 }
  37
  38 void f5 (int * restrict a, int * restrict b, int n)
  39 {
  40     int i = 0;
  41 #pragma GCC novector
  42     do
  43       {
  44         a[i] += b[i];
  45         i++;
  46       }
  47     while (i < (n & -8));
  48 }
  49
  50 void f6 (int * restrict a, int * restrict b, int n)
  51 {
  52     int i = 0;
  53 #pragma GCC novector
  54     while (i < (n & -8))
  55       {
  56         a[i] += b[i];
  57         i++;
  58       }
  59 }
  60
  61 /* { dg-final { scan-tree-dump-not "LOOP VECTORIZED" "vect" } } */