126 lines
1.9 KiB
C
126 lines
1.9 KiB
C
/* PR c/68513 */
|
|
/* { dg-do compile } */
|
|
/* { dg-options "-funsafe-math-optimizations -fno-math-errno -O -Wno-div-by-zero" } */
|
|
|
|
int i;
|
|
unsigned u;
|
|
volatile int *e;
|
|
|
|
#define E (i ? *e : 0)
|
|
|
|
/* Can't trigger some of them because operand_equal_p will return false
|
|
for side-effects. */
|
|
|
|
/* (x & ~m) | (y & m) -> ((x ^ y) & m) ^ x */
|
|
int
|
|
fn1 (void)
|
|
{
|
|
int r = 0;
|
|
r += (short) (E & ~u | i & u);
|
|
r += -(short) (E & ~u | i & u);
|
|
r += (short) -(E & ~u | i & u);
|
|
return r;
|
|
}
|
|
|
|
/* sqrt(x) < y is x >= 0 && x != +Inf, when y is large. */
|
|
double
|
|
fn2 (void)
|
|
{
|
|
double r;
|
|
r = __builtin_sqrt (E) < __builtin_inf ();
|
|
return r;
|
|
}
|
|
|
|
/* sqrt(x) < c is the same as x >= 0 && x < c*c. */
|
|
double
|
|
fn3 (void)
|
|
{
|
|
double r;
|
|
r = __builtin_sqrt (E) < 1.3;
|
|
return r;
|
|
}
|
|
|
|
/* copysign(x,y)*copysign(x,y) -> x*x. */
|
|
double
|
|
fn4 (double y, double x)
|
|
{
|
|
return __builtin_copysign (E, y) * __builtin_copysign (E, y);
|
|
}
|
|
|
|
/* x <= +Inf is the same as x == x, i.e. !isnan(x). */
|
|
int
|
|
fn5 (void)
|
|
{
|
|
return E <= __builtin_inf ();
|
|
}
|
|
|
|
/* Fold (A & ~B) - (A & B) into (A ^ B) - B. */
|
|
int
|
|
fn6 (void)
|
|
{
|
|
return (i & ~E) - (i & E);
|
|
}
|
|
|
|
/* Fold (A & B) - (A & ~B) into B - (A ^ B). */
|
|
int
|
|
fn7 (void)
|
|
{
|
|
return (i & E) - (i & ~E);
|
|
}
|
|
|
|
/* x + (x & 1) -> (x + 1) & ~1 */
|
|
int
|
|
fn8 (void)
|
|
{
|
|
return E + (E & 1);
|
|
}
|
|
|
|
/* Simplify comparison of something with itself. */
|
|
int
|
|
fn9 (void)
|
|
{
|
|
return E <= E | E >= E;
|
|
}
|
|
|
|
/* Fold (A & ~B) - (A & B) into (A ^ B) - B. */
|
|
int
|
|
fn10 (void)
|
|
{
|
|
return (i & ~E) - (i & E);
|
|
}
|
|
|
|
/* abs(x)*abs(x) -> x*x. Should be valid for all types. */
|
|
int
|
|
fn11 (void)
|
|
{
|
|
return __builtin_abs (E) * __builtin_abs (E);
|
|
}
|
|
|
|
/* (x | CST1) & CST2 -> (x & CST2) | (CST1 & CST2) */
|
|
int
|
|
fn12 (void)
|
|
{
|
|
return (E | 11) & 12;
|
|
}
|
|
|
|
/* fold_range_test */
|
|
int
|
|
fn13 (const char *s)
|
|
{
|
|
return s[E] != '\0' && s[E] != '/';
|
|
}
|
|
|
|
/* fold_comparison */
|
|
int
|
|
fn14 (void)
|
|
{
|
|
return (!!i ? : (u *= E / 0)) >= (u = E);
|
|
}
|
|
|
|
/* fold_mult_zconjz */
|
|
_Complex int
|
|
fn15 (_Complex volatile int *z)
|
|
{
|
|
return *z * ~*z;
|
|
}
|