view gcc/testsuite/gcc.dg/tree-ssa/pr22230.c @ 158:494b0b89df80 default tip

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author Shinji KONO <kono@ie.u-ryukyu.ac.jp>
date Mon, 25 May 2020 18:13:55 +0900
parents 04ced10e8804
children
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/* { dg-do run } */
/* { dg-options "-O1 -ftree-vrp" } */

/* PR tree-optimization/22230

   The meet of the ranges in "i*i" was not computed correctly, leading
   gcc to believe that a was equal to 0 after the loop.  */

extern void abort (void) __attribute__((noreturn));

int main (void)
{
  long a, i;

  for (i = 0; i < 5; i++)
    a = i * i;
  if (a != 16)
    abort ();
  return 0;
}