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view gcc/testsuite/gcc.dg/tree-ssa/reassoc-14.c @ 111:04ced10e8804

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gcc 7
author kono
date Fri, 27 Oct 2017 22:46:09 +0900
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/* { dg-do compile } */
/* { dg-options "-O2 -fdump-tree-reassoc1" } */

unsigned int test1 (unsigned int x, unsigned int y, unsigned int z,
		    unsigned int weight)
{
  unsigned int tmp1 = x * weight;
  unsigned int tmp2 = y * weight;
  unsigned int tmp3 = (x - y) * weight;
  return tmp1 + (tmp2 + tmp3);
}

unsigned int test2 (unsigned int x, unsigned int y, unsigned int z,
		    unsigned int weight)
{
  unsigned int tmp1 = x * weight;
  unsigned int tmp2 = y * weight * weight;
  unsigned int tmp3 = z * weight * weight * weight;
  return tmp1 + tmp2 + tmp3;
}

/* There should be two multiplication left in test1 (inculding one generated
   when converting addition to multiplication) and three in test2.  */

/* { dg-final { scan-tree-dump-times "\\\*" 5 "reassoc1" } } */