[PATCH] D43719: [WebAssembly] Do not use inheritance to define SubSection.

[Rui Ueyama via Phabricator via llvm-commits]

ruiu created this revision.
ruiu added a reviewer: sbc100.
Herald added subscribers: sunfish, aheejin, jgravelle-google, dschuff, jfb.

SubSection inherited from SyntheticSection, and SyntheticSection inherits
from OutputSection, so SubSection was an OutputSection. But that's wrong
because SubSection is not actually a WebAssembly output section.
It shares some functionalities with OutputSection, but overall it's very
different.

This patch removes that inheritance.


https://reviews.llvm.org/D43719

Files:
  lld/wasm/OutputSections.cpp
  lld/wasm/OutputSections.h
  lld/wasm/Writer.cpp

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