/* Test __atomic routines for existence and proper execution on 8 byte values with each valid memory model. */ /* { dg-do run } */ /* { dg-require-effective-target sync_long_long_runtime } */ /* { dg-options "" } */ /* { dg-options "-march=pentium" { target { { i?86-*-* x86_64-*-* } && ia32 } } } */ /* Test the execution of __atomic_compare_exchange_n builtin for a long_long. */ extern void abort(void); long long v = 0; long long expected = 0; long long max = ~0; long long desired = ~0; long long zero = 0; #define STRONG 0 #define WEAK 1 int main () { if (!__atomic_compare_exchange_n (&v, &expected, max, STRONG , __ATOMIC_RELAXED, __ATOMIC_RELAXED)) abort (); if (expected != 0) abort (); if (__atomic_compare_exchange_n (&v, &expected, 0, STRONG , __ATOMIC_ACQUIRE, __ATOMIC_RELAXED)) abort (); if (expected != max) abort (); if (!__atomic_compare_exchange_n (&v, &expected, 0, STRONG , __ATOMIC_RELEASE, __ATOMIC_ACQUIRE)) abort (); if (expected != max) abort (); if (v != 0) abort (); if (__atomic_compare_exchange_n (&v, &expected, desired, WEAK, __ATOMIC_ACQ_REL, __ATOMIC_ACQUIRE)) abort (); if (expected != 0) abort (); if (!__atomic_compare_exchange_n (&v, &expected, desired, STRONG , __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST)) abort (); if (expected != 0) abort (); if (v != max) abort (); /* Now test the generic version. */ v = 0; if (!__atomic_compare_exchange (&v, &expected, &max, STRONG, __ATOMIC_RELAXED, __ATOMIC_RELAXED)) abort (); if (expected != 0) abort (); if (__atomic_compare_exchange (&v, &expected, &zero, STRONG , __ATOMIC_ACQUIRE, __ATOMIC_RELAXED)) abort (); if (expected != max) abort (); if (!__atomic_compare_exchange (&v, &expected, &zero, STRONG , __ATOMIC_RELEASE, __ATOMIC_ACQUIRE)) abort (); if (expected != max) abort (); if (v != 0) abort (); if (__atomic_compare_exchange (&v, &expected, &desired, WEAK, __ATOMIC_ACQ_REL, __ATOMIC_ACQUIRE)) abort (); if (expected != 0) abort (); if (!__atomic_compare_exchange (&v, &expected, &desired, STRONG , __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST)) abort (); if (expected != 0) abort (); if (v != max) abort (); return 0; }