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LibJS/Bytecode: Store labels as basic block index during compilation

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Instead of storing a BasicBlock* and forcing the size of Label to be
sizeof(BasicBlock*), we now store the basic block index as a u32.

This means the final version of the bytecode is able to keep labels
at sizeof(u32), shrinking the size of many instructions. :^)
This commit is contained in:
Andreas Kling 2024-05-06 08:06:56 +02:00
commit 3a73eb99ac
Notes: sideshowbarker 2024-07-16 21:42:29 +09:00
7 changed files with 40 additions and 22 deletions
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6
Userland/Libraries/LibJS/Bytecode/Generator.h
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@ -150,12 +150,12 @@ public:
{
if (name.is_empty())
name = MUST(String::number(m_next_block++));
auto block = BasicBlock::create(name);
auto block = BasicBlock::create(m_root_basic_blocks.size(), name);
if (auto const* context = m_current_unwind_context) {
if (context->handler().has_value())
block->set_handler(context->handler().value().block());
block->set_handler(*m_root_basic_blocks[context->handler().value().basic_block_index()]);
if (m_current_unwind_context->finalizer().has_value())
block->set_finalizer(context->finalizer().value().block());
block->set_finalizer(*m_root_basic_blocks[context->finalizer().value().basic_block_index()]);
}
m_root_basic_blocks.append(move(block));
return *m_root_basic_blocks.last();