view gcc/testsuite/gcc.dg/fold-plusmult-2.c @ 145:1830386684a0

gcc-9.2.0
author anatofuz
date Thu, 13 Feb 2020 11:34:05 +0900
parents 04ced10e8804
children
line wrap: on
line source

/* { dg-do compile } */
/* { dg-options "-fdump-tree-original" } */

int foo (int i)
{
  return 2 + i * 4;
}

/* We do _not_ want the above to be canonicalized to (i * 2 + 1) * 2.  */

int bar (int i)
{
  return 4 + i * 2;
}

/* But eventually this to be canonicalized to (i + 2) * 2.  */

/* { dg-final { scan-tree-dump "i \\\* 4 \\\+ 2" "original" } } */
/* { dg-final { scan-tree-dump "\\\(i \\\+ 2\\\) \\\* 2" "original" } } */