gcc/testsuite/gcc.dg/tree-ssa/vrp27.c

   1 /* PR middle-end/26361.  */
   2 /* { dg-do run } */
   3 /* { dg-options "-O2 -std=gnu89" } */
   4
   5 void abort(void);
   6
   7 __attribute__((noinline))
   8 void gen_rtx_CONST_INT(long long x) {
   9     if (-x > 10)
  10         abort();
  11 }
  12 __attribute__((noinline))
  13 int alpha_expand_prologue(long frame_size)
  14 {
  15     unsigned long long a;
  16     int probed;
  17     if (frame_size <= 1)  return;
  18     unsigned long long b = -2;
  19     a = -2;
  20     do {
  21         int a1 = a;
  22         probed = -a1;
  23         gen_rtx_CONST_INT (a1);
  24         a -= 2;
  25         a1 = -a;
  26         probed = a1;
  27     } while (probed < frame_size);
  28 }
  29
  30 int main(void) {
  31     alpha_expand_prologue(10);
  32     return 0;
  33 }