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cleanup in refcounting

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This commit is contained in:
Folkert 2021-07-14 00:41:49 +02:00
parent 26b05d18f2
commit c45637d0fd
1 changed files with 9 additions and 6 deletions
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15
compiler/gen_llvm/src/llvm/refcounting.rs
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@ -1497,6 +1497,7 @@ fn build_rec_union_recursive_decrement<'a, 'ctx, 'env>(
// lists. To achieve it, we must first load all fields that we want to inc/dec (done above)
// and store them on the stack, then modify (and potentially free) the current cell, then
// actually inc/dec the fields.
match decrement_or_reuse {
DecOrReuse::Reuse => {}
DecOrReuse::Dec => {
@ -1543,17 +1544,19 @@ fn build_rec_union_recursive_decrement<'a, 'ctx, 'env>(
// read the tag_id
let current_tag_id = get_tag_id(env, parent, &union_layout, value_ptr.into());
let merge_block = env.context.append_basic_block(parent, "decrement_merge");
let default_block = env.context.append_basic_block(parent, "switch_default");
// switch on it
env.builder
.build_switch(current_tag_id, merge_block, &cases);
.build_switch(current_tag_id, default_block, &cases);
env.builder.position_at_end(merge_block);
{
env.builder.position_at_end(default_block);
// increment/decrement the cons-cell itself
if let DecOrReuse::Dec = decrement_or_reuse {
refcount_ptr.modify(call_mode, &Layout::Union(union_layout), env);
// increment/decrement the cons-cell itself
if let DecOrReuse::Dec = decrement_or_reuse {
refcount_ptr.modify(call_mode, &Layout::Union(union_layout), env);
}
}
// this function returns void