[PATCH] D22455: [ELF] Create output sections in LinkerScript class

[Eugene Leviant via llvm-commits]

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

Creating this patch according to George suggestion here
https://reviews.llvm.org/D19976

This patch moves output section creation from Writer<ELFT> to LinkerScript<ELFT>. 
Input section order in linker script is respected and can be different from section order in input files.
All lld unit tests pass successfully without modification

The main goal of this patch is to give a go to https://reviews.llvm.org/D22215
and many other unsupported features (like symbol assignment, PROVIDE, PROVIDE_HIDDEN, e.t.c)

Repository:
  rL LLVM

https://reviews.llvm.org/D22455

Files:
  ELF/InputSection.cpp
  ELF/LinkerScript.cpp
  ELF/LinkerScript.h
  ELF/Writer.cpp

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