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Implement general tail call optimization

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Signed-off-by: HyukWoo Park <hyukwoo.park@samsung.com>
This commit is contained in:
HyukWoo Park 2024-01-26 19:12:55 +09:00 • committed by Patrick Kim
commit 023b7ea014
27 changed files with 368 additions and 89 deletions
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13
src/runtime/ScriptSimpleFunctionObject.h
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@ -99,6 +99,17 @@ protected:
}
}
#if defined(ENABLE_TCO)
const Value returnValue = Interpreter::interpret(&newState, blk, programStart, registerFile);
if (shouldClearStack) {
clearStack<512>();
}
if (UNLIKELY(newState.inTCO())) {
// callee has been called in tail call, so reset the argument buffer
memset(Interpreter::tcoBuffer, 0, sizeof(Value) * TCO_ARGUMENT_COUNT_LIMIT);
}
return returnValue;
#else
if (shouldClearStack) {
const Value returnValue = Interpreter::interpret(&newState, blk, programStart, registerFile);
clearStack<512>();
@ -106,6 +117,7 @@ protected:
} else {
return Interpreter::interpret(&newState, blk, programStart, registerFile);
}
#endif
}
virtual Value construct(ExecutionState& state, const size_t argc, Value* argv, Object* newTarget) override
@ -163,7 +175,6 @@ protected:
ExecutionState newState(ctx, &state, &lexEnv, argc, argv, isStrict);
stackStorage[0] = thisArgument;
record.setNewTarget(newTarget);
const Value returnValue = Interpreter::interpret(&newState, blk, reinterpret_cast<const size_t>(blk->m_code.data()), registerFile);