d794597698
While we still have to support LLVM 4.0 for Emscripten, we can drop checks for LLVM >= 4.0 and < 4.0.
59 lines
1.4 KiB
C++
59 lines
1.4 KiB
C++
// Copyright 2018 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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#include "llvm/Linker/Linker.h"
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#include "rustllvm.h"
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using namespace llvm;
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struct RustLinker {
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Linker L;
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LLVMContext &Ctx;
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RustLinker(Module &M) :
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L(M),
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Ctx(M.getContext())
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{}
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};
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extern "C" RustLinker*
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LLVMRustLinkerNew(LLVMModuleRef DstRef) {
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Module *Dst = unwrap(DstRef);
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auto Ret = llvm::make_unique<RustLinker>(*Dst);
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return Ret.release();
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}
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extern "C" void
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LLVMRustLinkerFree(RustLinker *L) {
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delete L;
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}
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extern "C" bool
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LLVMRustLinkerAdd(RustLinker *L, char *BC, size_t Len) {
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std::unique_ptr<MemoryBuffer> Buf =
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MemoryBuffer::getMemBufferCopy(StringRef(BC, Len));
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Expected<std::unique_ptr<Module>> SrcOrError =
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llvm::getLazyBitcodeModule(Buf->getMemBufferRef(), L->Ctx);
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if (!SrcOrError) {
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LLVMRustSetLastError(toString(SrcOrError.takeError()).c_str());
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return false;
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}
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auto Src = std::move(*SrcOrError);
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if (L->L.linkInModule(std::move(Src))) {
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LLVMRustSetLastError("");
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return false;
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}
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return true;
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}
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