https://bugs.llvm.org/show_bug.cgi?id=49290
Bug ID: 49290
Summary: Implement `__mh_*_header` synthetic symbols
Product: lld
Version: unspecified
Hardware: PC
OS: All
Status: NEW
Severity: enhancement
Priority: P
Component: MachO
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected], [email protected],
[email protected], [email protected]
We currently have one synthetic symbol (DSOHandle) but I'm not very happy with
how it's implemented -- it has all the semantics of Defined symbol, except that
it doesn't belong to an InputSection. Having it as a separate case means it's
easy to forget to handle it. I've been thinking of having Defined symbols
contain a SectionPointerUnion instead of an InputSection field, which should be
all that's needed to model these synthetic symbols. The one thing I'm concerned
about is the performance implications; I think it will be fine, but it would be
good to run some benchmarks, e.g. by linking a large project like LLVM or
Chromium.
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