[PATCH] D23197: [ELF] Linkerscript: refactor sorting of special sections

[Eugene Leviant via llvm-commits]

evgeny777 created this revision.
evgeny777 added reviewers: ruiu, rafael.
evgeny777 added subscribers: grimar, ikudrin, emaste, davide, llvm-commits.
evgeny777 set the repository for this revision to rL LLVM.
evgeny777 added a project: lld.

Currently contents of .init_array, .fini_array, .ctors and .dtors is being sorted in Writer::finalizeSections, no matter if those sections are present in linker script or not.
This patch moves sorting of special sections to createSections(), which will allow defining symbols within such sections (required by FreeBSD and number of other projects)

Below is an example:

```
.init_array {
  __start = .;
  *(.init_array*)
  __end = .;
}
```

See this review:

https://reviews.llvm.org/D22683


Repository:
  rL LLVM

https://reviews.llvm.org/D23197

Files:
  ELF/LinkerScript.cpp
  ELF/OutputSections.cpp
  ELF/OutputSections.h
  ELF/Writer.cpp
  test/ELF/linkerscript/linkerscript-ctors-dtors.s
  test/ELF/linkerscript/linkerscript-init-fini.s

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