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Workaround broken __builtin_clz in clang with MS codegen (#519)

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This commit is contained in:
Victor Zverovich 2017-06-17 07:31:45 -07:00
parent eafc6a3292
commit 569c5bdbf1
1 changed files with 9 additions and 5 deletions
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14
fmt/format.h
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@ -287,12 +287,16 @@ typedef __int64 intmax_t;
# define FMT_ASSERT(condition, message) assert((condition) && message) # define FMT_ASSERT(condition, message) assert((condition) && message)
#endif #endif
#if FMT_GCC_VERSION >= 400 || FMT_HAS_BUILTIN(__builtin_clz) // __builtin_clz is broken in clang with Microsoft CodeGen:
# define FMT_BUILTIN_CLZ(n) __builtin_clz(n) // https://github.com/fmtlib/fmt/issues/519
#endif #ifndef _MSC_VER
# if FMT_GCC_VERSION >= 400 || FMT_HAS_BUILTIN(__builtin_clz)
# define FMT_BUILTIN_CLZ(n) __builtin_clz(n)
# endif
#if FMT_GCC_VERSION >= 400 || FMT_HAS_BUILTIN(__builtin_clzll) # if FMT_GCC_VERSION >= 400 || FMT_HAS_BUILTIN(__builtin_clzll)
# define FMT_BUILTIN_CLZLL(n) __builtin_clzll(n) # define FMT_BUILTIN_CLZLL(n) __builtin_clzll(n)
# endif
#endif #endif
// Some compilers masquerade as both MSVC and GCC-likes or // Some compilers masquerade as both MSVC and GCC-likes or