[PATCH] D59343: [WebAssembly] Use passive segments when memory is shared

[Thomas Lively via Phabricator via llvm-commits]

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

And adds corresponding memory.init instructions to initialize the
passive segments in __wasm_call_ctors. Using passive segments prevents
segments from automatically being reinitialized every time a new
WebAssembly instance is created, e.g. when creating a thread on a new
worker. Depends on D59274 <https://reviews.llvm.org/D59274>.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D59343

Files:
  lld/test/wasm/data-segment-merging.ll
  lld/wasm/OutputSections.cpp
  lld/wasm/OutputSegment.h
  lld/wasm/Writer.cpp

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