Add loop operator in fcode #889

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zxq9 wants to merge 27 commits from loop-op into master
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@ -378,7 +378,7 @@ to_scode1(Env, {loop, Init, It, Expr}) ->
InitS = to_scode(Env, Init) ++ [{jump, ContRef}], InitS = to_scode(Env, Init) ++ [{jump, ContRef}],
{ItV, Env1} = bind_local(It, Env), {ItV, Env1} = bind_local(It, Env),
ExprS = to_scode(bind_loop(ContRef, BreakRef, ItV, Env1), Expr) ++ [{jumpif, ?a, ContRef}, {jump, BreakRef}], ExprS = to_scode(bind_loop(ContRef, BreakRef, ItV, Env1), Expr) ++ [{jumpif, ?a, ContRef}, {jump, BreakRef}],
[{loop, InitS, ItV, ExprS, ContRef, BreakRef}]; [{loop, InitS, It, ExprS, ContRef, BreakRef}];
to_scode1(Env = #env{cont_ref = ContRef, loop_it = It}, {continue, Expr}) -> to_scode1(Env = #env{cont_ref = ContRef, loop_it = It}, {continue, Expr}) ->
ExprS = to_scode1(Env, Expr), ExprS = to_scode1(Env, Expr),
ExprS ++ [{'STORE', It, ?a}, push(?i(1))]; ExprS ++ [{'STORE', It, ?a}, push(?i(1))];