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JSSpecCompiler: Prepare for building SSA

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This commit introduces NamedVariableDeclaration and
SSAVariableDeclaration and allows storing both of them in Variable node.
Also, it adds additional structures in FunctionDefinition and
BasicBlock, which will be used to store SSA form related information.
This commit is contained in:
Dan Klishch 2023-10-01 22:32:10 -04:00 • committed by Andrew Kaster
parent 23164bc570
commit 0aeb7a26e9
11 changed files with 173 additions and 13 deletions
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13
Meta/Lagom/Tools/CodeGenerators/JSSpecCompiler/Compiler/ControlFlowGraph.h
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@ -16,15 +16,28 @@ namespace JSSpecCompiler {
class BasicBlock : public RefCounted<BasicBlock> {
public:
struct PhiNode {
struct Branch {
BasicBlockRef block;
VariableRef value;
};
VariableRef var;
Vector<Branch> branches;
};
BasicBlock(size_t index, NonnullRefPtr<ControlFlowOperator> continuation)
: m_index(index)
, m_continuation(move(continuation))
, m_immediate_dominator(nullptr)
{
}
size_t m_index;
Vector<PhiNode> m_phi_nodes;
Vector<Tree> m_expressions;
NonnullRefPtr<ControlFlowOperator> m_continuation;
BasicBlockRef m_immediate_dominator;
};
class ControlFlowGraph : public RefCounted<ControlFlowGraph> {