[thirdparty/gcc.git] / gcc / testsuite / gcc.dg / tree-ssa / range-sqrt.c

// { dg-do compile }
// { dg-options "-O2 -fdump-tree-evrp -fno-thread-jumps" }

#include <math.h>

void use (double);
void link_error ();

void
foo (double x)
{
  if (__builtin_isnan (x))
    __builtin_unreachable ();
  x = sqrt (x);
  if (x < -0.0)
    link_error ();
  use (x);
}

void
bar (double x)
{
  if (!__builtin_isnan (sqrt (x)))
    {
      if (__builtin_isnan (x))
	link_error ();
      if (x < -0.0)
	link_error ();
    }
}

void
stool (double x)
{
  double res1 = sqrt (x);
  double res2 = __builtin_sqrt (x);
  if (res1 < -0.0 || res2 < -0.0)
    link_error ();
}

// { dg-final { scan-tree-dump-not "link_error" "evrp" { target { { *-*-linux* } && { glibc } } } } }
Commit	Line	Data
ba39d2be JJ	1	// { dg-do compile }
	2	// { dg-options "-O2 -fdump-tree-evrp -fno-thread-jumps" }
	3
	4	#include <math.h>
	5
	6	void use (double);
	7	void link_error ();
	8
	9	void
	10	foo (double x)
	11	{
	12	if (__builtin_isnan (x))
	13	__builtin_unreachable ();
	14	x = sqrt (x);
	15	if (x < -0.0)
	16	link_error ();
	17	use (x);
	18	}
	19
	20	void
	21	bar (double x)
	22	{
	23	if (!__builtin_isnan (sqrt (x)))
	24	{
	25	if (__builtin_isnan (x))
	26	link_error ();
	27	if (x < -0.0)
	28	link_error ();
	29	}
	30	}
	31
	32	void
	33	stool (double x)
	34	{
	35	double res1 = sqrt (x);
	36	double res2 = __builtin_sqrt (x);
	37	if (res1 < -0.0 \|\| res2 < -0.0)
	38	link_error ();
	39	}
	40
	41	// { dg-final { scan-tree-dump-not "link_error" "evrp" { target { { --linux* } && { glibc } } } } }