gcc/testsuite/gcc.dg/bic-bitmask-16.c

   1 /* { dg-do run } */
   2 /* { dg-options "-O1 -fdump-tree-dce" } */
   3
   4 #include <stdint.h>
   5
   6 __attribute__((noinline, noipa))
   7 void fun1(uint32_t *x, int n)
   8 {
   9     for (int i = 0; i < (n & -16); i++)
  10       x[i] = (x[i]&(~255)) > 0;
  11 }
  12
  13 __attribute__((noinline, noipa, optimize("O0")))
  14 void fun2(uint32_t *x, int n)
  15 {
  16     for (int i = 0; i < (n & -16); i++)
  17       x[i] = (x[i]&(~255)) > 0;
  18 }
  19
  20 #include "bic-bitmask.h"
  21
  22 /* { dg-final { scan-tree-dump-times {>\s* 255} 1 dce7 { target vect_int } } } */
  23 /* { dg-final { scan-tree-dump-not {&\s* 4294967040} dce7 { target vect_int } } } */
  24