tree 5f0ca64348c3ad551fa07c8d0caa6d2140792b57
parent 6a0905d11ede27f2ac52338dc9d4bcd5c6e8a2f5
author Kyungwoo Lee <kyulee@meta.com> 1731720275 -0800
committer GitHub <noreply@github.com> 1731720275 -0800
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[CGData][lld-macho] Merge CG Data by LLD (#112674)

LLD now processes raw CG data for stable functions, similar to how it
handles raw CG data for the outliner's hash tree. This data is encoded
in the custom section (`__llvm_merge`) within object files. LLD merges
this information into the indexed CG data file specified by the
`-codegen-data-generate-path={path}` option. For the linker that does
not support this feature, we could use `llvm-cgdata` tool --
https://github.com/llvm/llvm-project/blob/main/llvm/docs/CommandGuide/llvm-cgdata.rst.

Depends on #115750.
This is a patch for
https://discourse.llvm.org/t/rfc-global-function-merging/82608.