gcc-4.9/gcc/testsuite/gcc.target/i386/387-10.c


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/* PR tree-optimization/24964 */
/* { dg-do compile } */
/* { dg-options "-O2 -mfpmath=387 -mfancy-math-387" } */

double fabs(double x);

double test1(double x)
{
  double t = fabs(x);
  return t*t;
}

double test2(double x)
{
  double t = -x;
  return t*t;
}

/* { dg-final { scan-assembler-not "fchs" } } */
/* { dg-final { scan-assembler-not "fabs" } } */