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/* Test __builtin_{add,sub}_overflow on {,un}signed char. */
/* { dg-do run } */
/* { dg-skip-if "" { ! run_expensive_tests } { "*" } { "-O0" "-O2" } } */
#define UCHAR_MAX ((unsigned char) ~0)
#ifndef SHIFT
typedef signed char S;
typedef unsigned char U;
typedef int W;
#define SHIFT 0
#define S_MAX __SCHAR_MAX__
#define S_MIN (-__SCHAR_MAX__ - 1)
#define COND (__SIZEOF_INT__ > 1)
#endif
#define F(n, t1, t2, tr, b) \
__attribute__((noinline, noclone)) tr \
n (t1 x, t2 y, int *ovf) \
{ \
tr res; \
*ovf = __builtin_##b##_overflow (x, y, &res); \
return res; \
}
F (spses, S, S, S, add)
F (upueu, U, U, U, add)
F (spseu, S, S, U, add)
F (upues, U, U, S, add)
F (spues, S, U, S, add)
F (upses, U, S, S, add)
F (spueu, S, U, U, add)
F (upseu, U, S, U, add)
F (ssses, S, S, S, sub)
F (usueu, U, U, U, sub)
F (ssseu, S, S, U, sub)
F (usues, U, U, S, sub)
F (ssues, S, U, S, sub)
F (usses, U, S, S, sub)
F (ssueu, S, U, U, sub)
F (usseu, U, S, U, sub)
int
main ()
{
#if COND
int i, j;
for (i = 0; i < UCHAR_MAX; i++)
for (j = 0; j < UCHAR_MAX; j++)
{
S s1 = ((W) i << SHIFT) + S_MIN;
U u1 = ((W) i << SHIFT);
S s2 = ((W) j << SHIFT) + S_MIN;
U u2 = ((W) j << SHIFT);
W w;
int ovf;
#define T(n, t1, t2, tr, op) \
w = ((W) t1##1) op ((W) t2##2); \
if (n (t1##1, t2##2, &ovf) != (tr) w \
|| ovf != (w != (tr) w)) \
__builtin_abort ();
T (spses, s, s, S, +)
T (upueu, u, u, U, +)
T (spseu, s, s, U, +)
T (upues, u, u, S, +)
T (spues, s, u, S, +)
T (upses, u, s, S, +)
T (spueu, s, u, U, +)
T (upseu, u, s, U, +)
T (ssses, s, s, S, -)
T (usueu, u, u, U, -)
T (ssseu, s, s, U, -)
T (usues, u, u, S, -)
T (ssues, s, u, S, -)
T (usses, u, s, S, -)
T (ssueu, s, u, U, -)
T (usseu, u, s, U, -)
}
#endif
return 0;
}
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