view gcc/testsuite/gcc.dg/fold-div-1.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 compile } */
/* { dg-options "-O1 -funsafe-math-optimizations -fdump-tree-gimple" } */

float f(float x)
{
  return x/2 + x/3;
}

float g(float x)
{
  return 2/x + 3/x;
}

float h(float x)
{
  return x/2 - x/3;
}

float i(float x)
{
  return 2/x - 3/x;
}

/* f and h should be turned into multiplications,
   the divisions in g and i should be grouped together.  */

/* { dg-final { scan-tree-dump-times " \\* " 2 "gimple" } } */
/* { dg-final { scan-tree-dump-times " / " 2 "gimple" } } */