| commit | fc8f54d4961e8f15abc7b4736dd5285569285f59 | [log] [tgz] |
|---|---|---|
| author | Ellis Hoag <ellis.sparky.hoag@gmail.com> | Mon Sep 22 11:23:58 2025 -0700 |
| committer | GitHub <noreply@github.com> | Mon Sep 22 11:23:58 2025 -0700 |
| tree | 9d2a875e71bcb0201e55f90b2df64198e634382f | |
| parent | 8843111d381bc9bd0895dc11a9b221bb41af7306 [diff] |
[LLD][MachO] Option to emit separate cstring sections (#158720)
Add the `--{no-}separate-cstring-literal-sections` option to emit
cstring literals into sections defined by their section name. This
allows for changes like https://github.com/swiftlang/swift/pull/84300
and https://github.com/swiftlang/swift/pull/84236 to actually have an
affect. The default behavior has not changed.
The reason this is useful is because strings in different sections might
have different access patterns at runtime. By splitting these strings
into separate sections, we may reduce the number of page faults during
startup. For example, the ObjC runtime accesses all strings in
`__objc_classname` before main.
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