Viewing file:  pr103069-4.c (1 KB) -rw-r--r--
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/* PR target/103069 */
/* { dg-do run } */
/* { dg-additional-options "-O2 -march=x86-64 -mtune=generic" } */
#include <stdlib.h>
#include "pr103069-3.c"
#define FUNC_CMPXCHG_RELAX(TYPE) \
__attribute__ ((noinline, noclone, target ("relax-cmpxchg-loop"))) \
TYPE relax_##TYPE##_cmpxchg (TYPE *lock, TYPE newval, TYPE oldval) \
{ \
do \
{ \
newval = oldval | 1; \
} while (! __atomic_compare_exchange_n (lock, &oldval, newval, \
0, __ATOMIC_RELEASE, \
__ATOMIC_RELAXED)); \
return *lock; \
}
FUNC_CMPXCHG_RELAX (int64_t)
FUNC_CMPXCHG_RELAX (int)
FUNC_CMPXCHG_RELAX (short)
FUNC_CMPXCHG_RELAX (char)
#define TEST_CMPXCHG_LOOP(TYPE) \
{ \
TYPE a = 11, b = 20, c = 11, res, exp; \
TYPE d = 11, e = 20, f = 11; \
res = relax_##TYPE##_cmpxchg (&a, b, c); \
exp = f_##TYPE##_cmpxchg (&d, e, f); \
if (res != exp || a != d) \
abort (); \
}
int main (void)
{
TEST_CMPXCHG_LOOP (int64_t)
TEST_CMPXCHG_LOOP (int)
TEST_CMPXCHG_LOOP (short)
TEST_CMPXCHG_LOOP (char)
return 0;
}
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