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change how invoke refcounting works (the live variable calculation was incorrect)

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Folkert 2021-02-19 17:11:29 +01:00
parent b24882eb95
commit 207a5eb537
1 changed files with 48 additions and 3 deletions
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51
compiler/mono/src/inc_dec.rs
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@ -729,8 +729,12 @@ impl<'a> Context<'a> {
layout,
} => {
// TODO this combines parts of Let and Switch. Did this happen correctly?
let mut case_live_vars = collect_stmt(stmt, &self.jp_live_vars, MutSet::default());
let mut case_live_vars = collect_stmt(pass, &self.jp_live_vars, MutSet::default());
case_live_vars.extend(collect_stmt(fail, &self.jp_live_vars, MutSet::default()));
// the result of an invoke should not be touched in the fail branch
// but it should be present in the pass branch (otherwise it would be dead)
debug_assert!(case_live_vars.contains(symbol));
case_live_vars.remove(symbol);
let fail = {
@ -758,9 +762,50 @@ impl<'a> Context<'a> {
layout: layout.clone(),
};
let stmt = self.arena.alloc(invoke);
let cont = self.arena.alloc(invoke);
(stmt, case_live_vars)
use crate::ir::CallType;
let stmt = match &call.call_type {
CallType::LowLevel { op } => {
let ps = crate::borrow::lowlevel_borrow_signature(self.arena, *op);
self.add_dec_after_lowlevel(call.arguments, ps, cont, &case_live_vars)
}
CallType::Foreign { .. } => {
let ps = crate::borrow::foreign_borrow_signature(
self.arena,
call.arguments.len(),
);
self.add_dec_after_lowlevel(call.arguments, ps, cont, &case_live_vars)
}
CallType::ByName {
name, full_layout, ..
} => {
// get the borrow signature
match self.param_map.get_symbol(*name, full_layout.clone()) {
Some(ps) => self.add_dec_after_application(
call.arguments,
ps,
cont,
&case_live_vars,
),
None => self.add_inc_before_consume_all(
call.arguments,
cont,
&case_live_vars,
),
}
}
CallType::ByPointer { .. } => {
self.add_inc_before_consume_all(call.arguments, cont, &case_live_vars)
}
};
let mut invoke_live_vars = case_live_vars;
occuring_variables_call(call, &mut invoke_live_vars);
(stmt, invoke_live_vars)
}
Join {
id: j,