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Add loads for data. (#2860)

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Start inserting loads when getting a value. This is done conditionally, but in theory we could start tracking nodes which need loading differently if the `isa` is considered cumbersome.
This commit is contained in:
Jon Ross-Perkins
2023-06-01 14:44:57 -07:00
committed by GitHub
parent a7939ab22f
commit 4152cf720a
11 changed files with 118 additions and 15 deletions
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toolchain/lowering/lowering_context.cpp
+13 -2
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@@ -46,10 +46,10 @@ auto LoweringContext::Run() -> std::unique_ptr<llvm::Module> {
}
auto LoweringContext::LowerBlock(SemanticsNodeBlockId block_id) -> void {
CARBON_VLOG() << "Lowering block " << block_id << "\n";
CARBON_VLOG() << "Lowering " << block_id << "\n";
for (const auto& node_id : semantics_ir_->GetNodeBlock(block_id)) {
auto node = semantics_ir_->GetNode(node_id);
CARBON_VLOG() << "Lowering node" << node_id << ": " << node << "\n";
CARBON_VLOG() << "Lowering " << node_id << ": " << node << "\n";
switch (node.kind()) {
#define CARBON_SEMANTICS_NODE_KIND(Name) \
case SemanticsNodeKind::Name: \
@@ -102,4 +102,15 @@ auto LoweringContext::BuildType(SemanticsNodeId node_id) -> llvm::Type* {
}
}
auto LoweringContext::GetNodeLoaded(SemanticsNodeId node_id) -> llvm::Value* {
auto* value = GetNode(node_id);
if (llvm::isa<llvm::AllocaInst, llvm::GetElementPtrInst>(value)) {
auto* load_type = GetType(semantics_ir().GetNode(node_id).type_id());
return builder().CreateLoad(load_type, value);
} else {
// No load is needed.
return value;
}
}
} // namespace Carbon