[PATCH] D42081: [WebAssembly] Symbol changes #2: Table relocs, LLD

[Nicholas Wilson via Phabricator via llvm-commits]

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

Second chunk split out of https://reviews.llvm.org/D41955.

Must be committed simultaneously with LLD change, https://reviews.llvm.org/D42080.

Changes:

- LLD updated to handle new table reloc data (see https://reviews.llvm.org/D42080)
- Now, we build the output table by iterating over all the non-Discarded Functions and Segments, rather than iterating over all the Symbols. This means that when we implement GC, the function table will actually be pruned properly.
- A small block of code in InputChunks::calcRelocations has been factored out into ObjFile::calcNewValue to match ObjFile::calcNewIndex.
- Relocatable output has been updated in the same way as for https://reviews.llvm.org/D42080, so the change to that test is correct


Repository:
  rLLD LLVM Linker

https://reviews.llvm.org/D42081

Files:
  test/wasm/relocatable.ll
  wasm/InputChunks.cpp
  wasm/InputChunks.h
  wasm/InputFiles.cpp
  wasm/InputFiles.h
  wasm/Writer.cpp

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