gcc/testsuite/gcc.dg/vect/pr103544.c

   1 /* { dg-do compile } */
   2 /* { dg-additional-options "-O3" } */
   3 /* { dg-additional-options "-march=haswell" { target x86_64-*-* i?86-*-* } } */
   4
   5 int crash_me(char* ptr, unsigned long size)
   6 {
   7   short result[16] = {0};
   8
   9   unsigned long no_iters = 0;
  10   for(unsigned long i = 0; i < size - 12; i+= 13){
  11       for(unsigned long j = 0; j < 12; j++){
  12           result[j] += ptr[i + j] - '0';
  13       }
  14       no_iters++;
  15   }
  16
  17   int result_int = 0;
  18   for(int j = 0; j < 12; j++){
  19       int bit_value = result[j] > no_iters/2 ? 1 : 0;
  20       result_int |= bit_value;
  21   }
  22
  23   return result_int;
  24 }