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https://github.com/carbon-language/carbon-lang.git
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Richard Smith
e91840e1b6
In preparation for lowering information from multiple `SemIR::File`s into a single `llvm::Module`. The primary purpose of this is to support lowering a local specific for an imported generic function, where the instructions for the generic function are in a different file than the instructions for the specific. See #5475 for a draft PR implementing that functionality on top of this. The per-`llvm::Module` state now lives in `Lower::Context`, and `Lower::FileContext` tracks only the per-`SemIR::File` information. `Lower::Context` should not mention any `SemIR` IDs that are file-specific. For now, the C++ lowering and the specific coalescing logic are kept per-file for simplicity.
31 lines
1.1 KiB
C++
31 lines
1.1 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/lower/lower.h"
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#include <memory>
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#include <optional>
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#include "toolchain/lower/context.h"
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#include "toolchain/lower/file_context.h"
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namespace Carbon::Lower {
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auto LowerToLLVM(llvm::LLVMContext& llvm_context,
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llvm::IntrusiveRefCntPtr<llvm::vfs::FileSystem> fs,
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std::optional<llvm::ArrayRef<Parse::GetTreeAndSubtreesFn>>
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tree_and_subtrees_getters_for_debug_info,
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llvm::StringRef module_name, const SemIR::File& sem_ir,
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const SemIR::InstNamer* inst_namer,
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llvm::raw_ostream* vlog_stream)
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-> std::unique_ptr<llvm::Module> {
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Context context(llvm_context, std::move(fs),
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tree_and_subtrees_getters_for_debug_info, module_name,
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vlog_stream);
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context.GetFileContext(&sem_ir, inst_namer).LowerDefinitions();
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return std::move(context).Finalize();
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}
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} // namespace Carbon::Lower
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