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[profile] Add comments to portability macros for readability (NFC)

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llvm-svn: 257126
This commit is contained in:
Vedant Kumar 2016-01-08 00:49:34 +00:00
parent cceedf79b4
commit 750a629555
1 changed files with 3 additions and 3 deletions
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6
compiler-rt/lib/profile/InstrProfilingPort.h
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@ -29,16 +29,16 @@
#define COMPILER_RT_BOOL_CMPXCHG(Ptr, OldV, NewV) \
(InterlockedCompareExchange64((LONGLONG volatile *)Ptr, (LONGLONG)NewV, \
(LONGLONG)OldV) == (LONGLONG)OldV)
#else
#else /* !defined(_WIN64) */
#define COMPILER_RT_BOOL_CMPXCHG(Ptr, OldV, NewV) \
(InterlockedCompareExchange((LONG volatile *)Ptr, (LONG)NewV, (LONG)OldV) == \
(LONG)OldV)
#endif
#else
#else /* !defined(_MSC_VER) */
#define COMPILER_RT_BOOL_CMPXCHG(Ptr, OldV, NewV) \
__sync_bool_compare_and_swap(Ptr, OldV, NewV)
#endif
#else
#else /* COMPILER_RT_HAS_ATOMICS != 1 */
#define COMPILER_RT_BOOL_CMPXCHG(Ptr, OldV, NewV) \
BoolCmpXchg((void **)Ptr, OldV, NewV)
#endif