https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82546
Bug ID: 82546
Summary: tree_size handling for TYPE nodes is confused
Product: gcc
Version: 8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: middle-end
Assignee: unassigned at gcc dot gnu.org
Reporter: nathan at gcc dot gnu.org
Target Milestone: ---
In working on the modules branch I discovered TYPE node size determination is
messed up.
tree_code_size returns sizeof (tree_type_non_common) for all tcc_type nodes.
Not even asking the lang hook for lang extension types.
1) I don't know whether some core types are smaller
2) some lang hooks don't return sizes for types
3) some lang hooks return too-small-a size
4) some langs don't correctly mark the hierarchy matrix -- how GC is working
here I'm not sure. We may be lucking out with nodes being reachable via other
ways?
5) All our nice tree_type_common, tree_type_with_lang_specific and
tree_type_non_common size optimization is not being used.
