Skip to content

Infinite range find algorithm: update transition comment for memchr optimization for ARM64 #3386

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
merged 4 commits into from
Feb 10, 2023
Merged

Infinite range find algorithm: update transition comment for memchr optimization for ARM64 #3386

Changes from all commits
Commits
Show all changes
4 commits
Select commit Hold shift + click to select a range
70a080d
find algorithm: Enable memchr optimization for ARM
AlexGuteniev Feb 4, 2023
05dd1c9
Update stl/inc/xutility
AlexGuteniev Feb 5, 2023
729cbf2
+context
AlexGuteniev Feb 6, 2023
af7c329
clang format
AlexGuteniev Feb 6, 2023
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
6 changes: 5 additions & 1 deletion stl/inc/xutility
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -5815,7 +5815,11 @@ namespace ranges {
return _RANGES next(_STD move(_First), _Result - _First_ptr);
}
#else // ^^^ _USE_STD_VECTOR_ALGORITHMS / not _USE_STD_VECTOR_ALGORITHMS vvv
if constexpr (sizeof(_Iter_value_t<_It>) == 1 && _Is_sized /* TRANSITION, DevCom-1615707 */) {
if constexpr (sizeof(_Iter_value_t<_It>) == 1
#if defined(_M_ARM64) || defined(_M_ARM64EC) // TRANSITION, VSO-1538014 : memchr inspects bytes after the match
&& _Is_sized
#endif // ^^^ workaround ^^^
) {
size_t _Count;
if constexpr (_Is_sized) {
_Count = static_cast<size_t>(_Last - _First);
Expand Down