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re PR libstdc++/13480 (bits/atomicity.h:56: warning: read-write constraint does not allow a register) 

2003-12-24  Andrew Pinski  <pinskia@physics.uc.edu>

        PR libstdc++/13480
        * config/cpu/i486/atomicity.h: Split up read-write memory operand.

From-SVN: r75016
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Andrew Pinski 2003-12-25 02:04:06 +00:00 committed by Andrew Pinski
parent 015fde0ae5
commit a51c409779
2 changed files with 8 additions and 2 deletions
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5
libstdc++-v3/ChangeLog
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@ -1,3 +1,8 @@
2003-12-24 Andrew Pinski <pinskia@physics.uc.edu>
PR libstdc++/13480
* config/cpu/i486/atomicity.h: Split up read-write memory operand.
2003-12-23 Benjamin Kosnik <bkoz@redhat.com>
* include/ext/new_allocator.h (new_allocator): Proper allocator class.

5
libstdc++-v3/config/cpu/i386/atomicity.h
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@ -52,8 +52,9 @@ __exchange_and_add(volatile _Atomic_word* __mem, int __val)
/* obtain the atomic exchange/add spin lock */
do {
__asm__ __volatile__ ("xchg{l} {%0,%1|%1,%0}"
: "+m" (__Atomicity_lock<0>::_S_atomicity_lock),
"+r" (__tmp));
: "m" (__Atomicity_lock<0>::_S_atomicity_lock),
"+r" (__tmp)
: "m" (__Atomicity_lock<0>::_S_atomicity_lock));
} while (__tmp);
__result = *__mem;