[all-commits] [llvm/llvm-project] 311178: [lld][WebAssembly] Initial support for stub libraries

Sam Clegg via All-commits all-commits at lists.llvm.org
Thu Mar 23 14:26:50 PDT 2023

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 3111784ff7d3d51a9e981b1a0bbc8f6511c34d25
  Author: Sam Clegg <sbc at chromium.org>
  Date:   2023-03-23 (Thu, 23 Mar 2023)

  Changed paths:
    M lld/docs/WebAssembly.rst
    A lld/test/wasm/Inputs/libstub-missing-dep.so
    A lld/test/wasm/Inputs/libstub-missing-sym.so
    A lld/test/wasm/Inputs/libstub.so
    A lld/test/wasm/stub_library.s
    M lld/wasm/Driver.cpp
    M lld/wasm/InputFiles.cpp
    M lld/wasm/InputFiles.h
    M lld/wasm/Relocations.cpp
    M lld/wasm/SymbolTable.cpp
    M lld/wasm/SymbolTable.h
    M lld/wasm/Symbols.cpp
    M lld/wasm/Symbols.h
    M lld/wasm/Writer.cpp

  Log Message:
  [lld][WebAssembly] Initial support for stub libraries

See the docs in lld/docs/WebAssembly.rst for more on this.

This feature unlocks a lot of simplification in the emscripten toolchain
since we can represent the JS libraries to wasm-ld as stub libraries.

See https://github.com/emscripten-core/emscripten/issues/18875

Differential Revision: https://reviews.llvm.org/D145308

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