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Only use _ReadWriteBarrier on MSVC

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It was causing compile errors when cross-compiling using mingw.

No functional change.
This commit is contained in:
Gary Linscott
2014-12-11 14:56:24 -05:00
parent f6d220ab14
commit 7b4828b68c
1 changed files with 2 additions and 2 deletions
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4
src/syzygy/tbprobe.cpp
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@@ -146,8 +146,8 @@ static int probe_wdl_table(Position& pos, int *success)
return 0; return 0;
} }
// Memory barrier to ensure ptr->ready = 1 is not reordered. // Memory barrier to ensure ptr->ready = 1 is not reordered.
#ifdef _WIN32 #ifdef _MSC_VER
_ReadWriteBarrier(); _ReadWriteBarrier();
#else #else
__asm__ __volatile__ ("" ::: "memory"); __asm__ __volatile__ ("" ::: "memory");
#endif #endif