[PATCH] D91577: [lld][WebAssembly] Add --unresolved-symbols=import-dynamic
Sam Clegg via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Mon Nov 16 15:47:51 PST 2020
sbc100 created this revision.
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sbc100 requested review of this revision.
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This is a new mode for handling unresolved symbols that allows all
symbols to be imported. With `import-functions` only functions symbols
are imported. With this new flag all symbols are imported but code must
be compiled with `-fPIC` (i.e. with relocation model set to pic) so that
data symbols can be resolved via imports.
This is importable to allow the building of static binaries that have
dynamic imports. See:
https://github.com/emscripten-core/emscripten/issues/12682
As with other used of dynamic linking ABI this beviour will produce a
warning unless run with `--experimental-pic`.
Repository:
rG LLVM Github Monorepo
https://reviews.llvm.org/D91577
Files:
lld/docs/WebAssembly.rst
lld/test/wasm/Inputs/unresolved-symbols-dynamic.s
lld/test/wasm/undefined-data.ll
lld/test/wasm/unresolved-symbols.s
lld/wasm/Config.h
lld/wasm/Driver.cpp
lld/wasm/Relocations.cpp
lld/wasm/Writer.cpp
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