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LibJS: Generate bytecode in basic blocks instead of one big block

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This limits the size of each block (currently set to 1K), and gets us
closer to a canonical, more easily analysable bytecode format.
As a result of this, "Labels" are now simply entries to basic blocks.
Since there is no more 'conditional' jump (as all jumps are always
taken), JumpIf{True,False} are unified to JumpConditional, and
JumpIfNullish is renamed to JumpNullish.
Also fixes #7914 as a result of reimplementing the loop logic.
This commit is contained in:
Ali Mohammad Pur 2021-06-09 06:49:58 +04:30 • committed by Andreas Kling
parent d7a25cdb82
commit 01e8f0889a
Notes: sideshowbarker 2024-07-18 12:35:35 +09:00
16 changed files with 392 additions and 174 deletions
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3
Userland/Libraries/LibJS/Runtime/ScriptFunction.h
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@ -7,6 +7,7 @@
#pragma once
#include <LibJS/AST.h>
#include <LibJS/Bytecode/Generator.h>
#include <LibJS/Runtime/Function.h>
namespace JS {
@ -47,7 +48,7 @@ private:
FlyString m_name;
NonnullRefPtr<Statement> m_body;
const Vector<FunctionNode::Parameter> m_parameters;
OwnPtr<Bytecode::Block> m_bytecode_block;
Optional<Bytecode::ExecutionUnit> m_bytecode_execution_unit;
ScopeObject* m_parent_scope { nullptr };
i32 m_function_length { 0 };
bool m_is_strict { false };