The-Homebrew-Cloud/Lime3DS
2
0
Fork 0
mirror of https://github.com/Lime3DS/Lime3DS.git synced 2024-11-01 16:05:07 +01:00
Code Issues Packages Projects Releases Wiki Activity

Common: remove a mod from AlignUp (#5441)

Browse Source 
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.
This commit is contained in:
Marshall Mohror 2020-07-07 16:39:23 -05:00 committed by GitHub
parent 835efd321e
commit bd7ee8c315
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 3 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
src/common/alignment.h
View File

@ -10,7 +10,9 @@ namespace Common {
template <typename T>
constexpr T AlignUp(T value, std::size_t size) {
static_assert(std::is_unsigned_v<T>, "T must be an unsigned value.");
return static_cast<T>(value + (size - value % size) % size);
auto mod{value % size};
value -= mod;
return static_cast<T>(mod == T{0} ? value : value + size);
}
template <typename T>