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[LLD] Allow usage of LLD as a library

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As discussed in https://github.com/llvm/llvm-project/issues/53475 this patch allows using LLD-as-a-lib. It also lets clients link only the drivers that they want (see unit tests).

This also adds the unit test infra as in the other LLVM projects. Among the test coverage, I've added the original issue from @krzysz00, see: https://github.com/ROCmSoftwarePlatform/D108850-lld-bug-reproduction

Important note: this doesn't allow (yet) linking in parallel. This will come a bit later, in subsequent patches, for COFF at last.

Differential revision: https://reviews.llvm.org/D119049
This commit is contained in:
Alexandre Ganea
2023-06-13 16:22:51 -04:00
parent eb3d21be37
commit 2700da5fe2
24 changed files with 560 additions and 209 deletions
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2
lld/wasm/Driver.cpp
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@@ -84,7 +84,7 @@ private:
bool link(ArrayRef<const char *> args, llvm::raw_ostream &stdoutOS,
llvm::raw_ostream &stderrOS, bool exitEarly, bool disableOutput) {
// This driver-specific context will be freed later by lldMain().
// This driver-specific context will be freed later by unsafeLldMain().
auto *ctx = new CommonLinkerContext;
ctx->e.initialize(stdoutOS, stderrOS, exitEarly, disableOutput);