Viewing file:  zero_sign_ext_test.c (4.18 KB) -rw-r--r--
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extern void abort (void);
/* { dg-options "-O2" } */
/* { dg-do run } */
/* { dg-require-effective-target int32plus } */
#define TYPE_MAX(type, sign) \
((!sign) ? ((1 << (sizeof (type) * 8 - 1)) - 1) : \
((1 << (sizeof (type) * 8)) - 1))
#define TYPE_MIN(type, sign) \
((!sign) ? -(1 << (sizeof (type) * 8 - 1)) : 0)
#define TEST_FN(NAME, ARG_TYPE, RET_TYPE, CAST_TYPE, VAL, VR_MIN, VR_MAX)\
__attribute__((noinline, noclone)) RET_TYPE \
NAME (ARG_TYPE arg){ \
RET_TYPE ret = VAL; \
if (arg + 1 < VR_MIN || arg + 1 > VR_MAX) return ret; \
/* Value Range of arg at this point will be [VR_min, VR_max]. */\
arg = arg + VAL; \
ret = (CAST_TYPE)arg; \
return arg; \
}
/* Signed to signed conversion with value in-range. */
TEST_FN (foo1, short, short, char, 1, TYPE_MIN (char, 0), TYPE_MAX (char, 0));
TEST_FN (foo2, short, short, char, 1, TYPE_MIN (char, 0) + 1,\
TYPE_MAX (char, 0) - 1);
/* Signed to signed conversion with value not in-range. */
TEST_FN (foo3, short, short, char, -1, TYPE_MIN (short, 0) + 1, 100);
TEST_FN (foo4, short, short, char, 1, 12, TYPE_MAX (short, 0) + 1);
/* Unsigned to unsigned conversion with value in-range. */
TEST_FN (foo5, unsigned short, unsigned short, unsigned char, 1,\
TYPE_MIN (char, 1) + 1, TYPE_MAX (char, 1) - 1);
TEST_FN (foo6, unsigned short, unsigned short, unsigned char, 1,\
TYPE_MIN (char, 1), TYPE_MAX (char, 1));
/* Unsigned to unsigned conversion with value not in-range. */
TEST_FN (foo7, unsigned short, unsigned short, unsigned char, 1,\
TYPE_MIN (short, 1) + 1, TYPE_MAX (short, 1) - 1);
TEST_FN (foo8, unsigned short, unsigned short, unsigned char, 1,\
TYPE_MIN (short, 1), TYPE_MAX (short, 1));
/* Signed to unsigned conversion with value range positive. */
TEST_FN (foo9, short, short, unsigned char, -1, 1,\
TYPE_MAX (char, 1) - 1);
TEST_FN (foo10, short, short, unsigned char, 1, 0,\
TYPE_MAX (char, 1));
/* Signed to unsigned conversion with value range negative. */
TEST_FN (foo11, short, short, unsigned char, 1,\
TYPE_MIN (char, 0) + 1, TYPE_MAX (char, 0) - 1);
TEST_FN (foo12, short, short, unsigned char, 1,\
TYPE_MIN (char, 0), TYPE_MAX (char, 0));
/* Unsigned to Signed conversion with value range in signed equiv range. */
TEST_FN (foo13, unsigned short, unsigned short, char, 1,\
TYPE_MIN (char, 1) + 1, TYPE_MAX (char, 0) - 1);
TEST_FN (foo14, unsigned short, unsigned short, char, 1,\
TYPE_MIN (char, 1), TYPE_MAX (char, 0));
/* Unsigned to Signed conversion with value range not-in signed range. */
TEST_FN (foo15, unsigned short, unsigned short, char, 1,\
TYPE_MIN (char, 1) + 1, TYPE_MAX (char, 1) - 1);
TEST_FN (foo16, unsigned short, unsigned short, char, 1,\
TYPE_MIN (char, 1), TYPE_MAX (char, 1));
int main ()
{
/* Signed to signed conversion with value in-range. */
/* arg + 1. */
if (foo1 (-32) != -31)
abort ();
/* arg + 1. */
if (foo2 (32) != 33)
abort ();
/* Signed to signed conversion with value not in-range. */
/* arg - 1. */
if (foo3 (-512) != -513)
abort ();
/* arg + 1. */
if (foo4 (512) != 513)
abort ();
/* Unsigned to unsigned conversion with value in-range. */
/* arg + 1. */
if (foo5 (64) != 65)
abort ();
/* arg + 1. */
if (foo6 (64) != 65)
abort ();
/* Unsigned to unsigned conversion with value not in-range. */
/* arg + 1. */
if (foo7 (512) != 513)
abort ();
/* arg + 1. */
if (foo8 (512) != 513)
abort ();
/* Signed to unsigned conversion with value range positive. */
/* arg - 1. */
if (foo9 (2) != 1)
abort ();
/* arg + 1. */
if (foo10 (2) != 3)
abort ();
/* Signed to unsigned conversion with value range negative. */
/* arg + 1. */
if (foo11 (-125) != -124)
abort ();
/* arg + 1. */
if (foo12 (-125) != -124)
abort ();
/* Unsigned to Signed conversion with value range in signed equiv range. */
/* arg + 1. */
if (foo13 (125) != 126)
abort ();
/* arg + 1. */
if (foo14 (125) != 126)
abort ();
/* Unsigned to Signed conversion with value range not-in signed range. */
/* arg + 1. */
if (foo15 (250) != 251)
abort ();
/* arg + 1. */
if (foo16 (250) != 251)
abort ();
return 0;
}
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