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https://github.com/carbon-language/carbon-lang.git
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Jon Ross-Perkins
cf389bf5d3
Creates a `GlobalInit` class for storing relevant values, pulling functions off `InstBlockStack` and `Context`. Adds a `Context` pointer just so that it doesn't need to be passed in on each call (`Finalize` in particular uses several members). Note we have several different `InstBlockStack` instances, so several copies of the relevant members were simply unused.
51 lines
1.7 KiB
C++
51 lines
1.7 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/check/global_init.h"
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#include "toolchain/check/context.h"
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namespace Carbon::Check {
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auto GlobalInit::Resume() -> void {
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context_->inst_block_stack().Push(block_id_, block_);
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}
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auto GlobalInit::Suspend() -> void {
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// TODO: Consider splicing together blocks in order to avoid sizable copies
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// here.
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auto contents = context_->inst_block_stack().PeekCurrentBlockContents();
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block_.assign(contents.begin(), contents.end());
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block_id_ = context_->inst_block_stack().PeekOrAdd();
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context_->inst_block_stack().PopAndDiscard();
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}
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auto GlobalInit::Finalize() -> void {
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// __global_init is only added if there are initialization instructions.
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if (block_.empty() && block_id_ == SemIR::InstBlockId::GlobalInit) {
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return;
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}
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Resume();
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context_->AddInst<SemIR::Return>(Parse::NodeId::Invalid, {});
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// Pop the GlobalInit block here to finalize it.
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context_->inst_block_stack().Pop();
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auto name_id = context_->sem_ir().identifiers().Add("__global_init");
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context_->sem_ir().functions().Add(
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{.name_id = SemIR::NameId::ForIdentifier(name_id),
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.parent_scope_id = SemIR::NameScopeId::Package,
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.decl_id = SemIR::InstId::Invalid,
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.generic_id = SemIR::GenericId::Invalid,
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.implicit_param_refs_id = SemIR::InstBlockId::Invalid,
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.param_refs_id = SemIR::InstBlockId::Empty,
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.return_storage_id = SemIR::InstId::Invalid,
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.is_extern = false,
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.return_slot = SemIR::Function::ReturnSlot::Absent,
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.body_block_ids = {SemIR::InstBlockId::GlobalInit}});
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}
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} // namespace Carbon::Check
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