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Common: remove a mod from AlignUp (#5441)
In cases where the size is not a known constant when inlining, AlignUp<std::size_t> currently generates two 64-bit div instructions. This generates one div and a cmov which is significantly cheaper.
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@ -10,7 +10,9 @@ namespace Common {
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template <typename T>
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template <typename T>
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constexpr T AlignUp(T value, std::size_t size) {
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constexpr T AlignUp(T value, std::size_t size) {
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static_assert(std::is_unsigned_v<T>, "T must be an unsigned value.");
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static_assert(std::is_unsigned_v<T>, "T must be an unsigned value.");
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return static_cast<T>(value + (size - value % size) % size);
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auto mod{value % size};
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value -= mod;
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return static_cast<T>(mod == T{0} ? value : value + size);
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}
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}
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template <typename T>
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template <typename T>
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