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tilepro: fix warnings in sysdeps/tile/tilepro/bits/atomic.h

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Using a ({ }) structure avoids the "value computed is not used"
that a simple () structure causes.
This commit is contained in:
Chris Metcalf 2015-08-04 12:02:10 -04:00
parent bbab82c25d
commit 0d261f406d
2 changed files with 18 additions and 8 deletions
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6
ChangeLog
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@ -1,3 +1,9 @@
2015-08-04 Chris Metcalf <cmetcalf@ezchip.com>
* sysdeps/tile/tilepro/bits/atomic.h (__atomic_update):
Restructure macro to avoid "value computed is not used" warning.
(atomic_compare_and_exchange_val_acq): Likewise.
2015-08-04 Andreas Schwab <schwab@suse.de>
[BZ #18635]

20
sysdeps/tile/tilepro/bits/atomic.h
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@ -39,10 +39,12 @@ int __atomic_cmpxchg_32 (volatile int *mem, int newval, int oldval)
}
#define atomic_compare_and_exchange_val_acq(mem, n, o) \
((__typeof (*(mem))) \
((sizeof (*(mem)) == 4) ? \
__atomic_cmpxchg_32 ((int *) (mem), (int) (n), (int) (o)) : \
__atomic_error_bad_argument_size()))
({ \
if (sizeof (*(mem)) != 4) \
__atomic_error_bad_argument_size (); \
(__typeof (*(mem))) \
__atomic_cmpxchg_32 ((int *) (mem), (int) (n), (int) (o)); \
})
/* Atomically compute:
int old = *ptr;
@ -64,10 +66,12 @@ int __atomic_update_32 (volatile int *mem, int mask, int addend)
/* Size-checked verson of __atomic_update_32. */
#define __atomic_update(mem, mask, addend) \
((__typeof (*(mem))) \
((sizeof (*(mem)) == 4) ? \
__atomic_update_32 ((int *) (mem), (int) (mask), (int) (addend)) : \
__atomic_error_bad_argument_size ()))
({ \
if (sizeof (*(mem)) != 4) \
__atomic_error_bad_argument_size (); \
(__typeof (*(mem))) \
__atomic_update_32 ((int *) (mem), (int) (mask), (int) (addend)); \
})
#define atomic_exchange_acq(mem, newvalue) \
__atomic_update ((mem), 0, (newvalue))