Viewing file:  pr68513.c (1.94 KB) -rw-r--r--
Select action/file-type:
 (+) |  (+) |  (+) | Code (+) | Session (+) |  (+) | SDB (+) |  (+) |  (+) |  (+) |  (+) |  (+) |
/* 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;
}
|
