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Commit 728101e3 by lhchavez
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Move the intrinsics part of the change to its own PR 

Less controversial changes together is better.
parent 321d19c1
Showing with 10 additions and 20 deletions
src/integer.h
......@@ -55,26 +55,16 @@ GIT_INLINE(bool) git__add_uint64_overflow(uint64_t *out, uint64_t one, uint64_t
}
/* Use clang/gcc compiler intrinsics whenever possible */
#if (__has_builtin(__builtin_add_overflow) || \
(defined(__GNUC__) && (__GNUC__ >= 5)))
# if (ULONG_MAX == ULLONG_MAX) && defined(_WIN64)
# define git__add_sizet_overflow(out, one, two) \
__builtin_uaddll_overflow(one, two, out)
# define git__multiply_sizet_overflow(out, one, two) \
__builtin_umulll_overflow(one, two, out)
# elif (ULONG_MAX == ULLONG_MAX)
# define git__add_sizet_overflow(out, one, two) \
__builtin_uaddl_overflow(one, two, out)
# define git__multiply_sizet_overflow(out, one, two) \
__builtin_umull_overflow(one, two, out)
# else
# define git__add_sizet_overflow(out, one, two) \
__builtin_add_overflow(one, two, out)
# define git__multiply_sizet_overflow(out, one, two) \
__builtin_mul_overflow(one, two, out)
# endif
#if (SIZE_MAX == ULONG_MAX) && __has_builtin(__builtin_uaddl_overflow)
# define git__add_sizet_overflow(out, one, two) \
__builtin_uaddl_overflow(one, two, out)
# define git__multiply_sizet_overflow(out, one, two) \
__builtin_umull_overflow(one, two, out)
#elif (SIZE_MAX == UINT_MAX) && __has_builtin(__builtin_uadd_overflow)
# define git__add_sizet_overflow(out, one, two) \
__builtin_uadd_overflow(one, two, out)
# define git__multiply_sizet_overflow(out, one, two) \
__builtin_umul_overflow(one, two, out)
#else
/**
......
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