[PATCH] D59270: [WebAssembly] Handle undefined data symbols in shared libraries

[Sam Clegg via Phabricator via llvm-commits]

sbc100 created this revision.
Herald added subscribers: llvm-commits, sunfish, aheejin, jgravelle-google, dschuff.
Herald added a project: LLVM.

When linking shared libraries, we import a mutable wasm global
to represent the address of each undefined data symbol.

This is a step towards supporting dynamic linking and shared
libraries.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D59270

Files:
  lld/test/wasm/shared.ll
  lld/wasm/Driver.cpp
  lld/wasm/Symbols.h
  lld/wasm/Writer.cpp

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