mirror of
https://github.com/carbon-language/carbon-lang.git
synced 2026-09-24 22:02:23 +01:00
Chandler Carruth
eecbb7e508
This keeps the allocations cheap and simplifies the code. It was inspired by the need to expand param files, but no functionality changed yet.
67 lines
2.1 KiB
C++
67 lines
2.1 KiB
C++
// Part of the Carbon Language project, under the Apache License v2.0 with LLVM
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// Exceptions. See /LICENSE for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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#include "toolchain/driver/lld_runner.h"
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#include <algorithm>
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#include <memory>
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#include <numeric>
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#include <optional>
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#include <string>
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#include "common/string_helpers.h"
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#include "common/vlog.h"
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#include "llvm/ADT/ArrayRef.h"
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#include "llvm/ADT/StringRef.h"
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#include "llvm/Support/Allocator.h"
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// Declare the supported driver flavor entry points.
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//
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// TODO: Currently, just ELF and MachO, but eventually we should support all of
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// the LLD platforms.
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//
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// NOLINTBEGIN(readability-identifier-naming): External library name.
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LLD_HAS_DRIVER(elf)
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LLD_HAS_DRIVER(macho)
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// NOLINTEND(readability-identifier-naming)
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namespace Carbon {
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auto LldRunner::LinkHelper(llvm::StringLiteral label,
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llvm::ArrayRef<llvm::StringRef> args,
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const std::string& path, lld::DriverDef driver_def)
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-> bool {
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// Allocate one chunk of storage for the actual C-strings and a vector of
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// pointers into the storage.
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llvm::BumpPtrAllocator alloc;
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llvm::SmallVector<const char*, 64> cstr_args =
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BuildCStrArgs(path, args, alloc);
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CARBON_VLOG("Running LLD {0}-platform link with args:\n", label);
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for (const char* cstr_arg : cstr_args) {
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CARBON_VLOG(" '{0}'\n", cstr_arg);
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}
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lld::Result result =
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lld::lldMain(cstr_args, llvm::outs(), llvm::errs(), {driver_def});
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// Check for an unrecoverable error.
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CARBON_CHECK(result.canRunAgain, "LLD encountered an unrecoverable error!");
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// TODO: Should this be forwarding the full exit code?
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return result.retCode == 0;
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}
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auto LldRunner::ElfLink(llvm::ArrayRef<llvm::StringRef> args) -> bool {
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return LinkHelper("GNU", args, installation_->ld_lld_path(),
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{.f = lld::Gnu, .d = &lld::elf::link});
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}
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auto LldRunner::MachOLink(llvm::ArrayRef<llvm::StringRef> args) -> bool {
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return LinkHelper("Darwin", args, installation_->ld64_lld_path(),
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{.f = lld::Darwin, .d = &lld::macho::link});
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}
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} // namespace Carbon
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