add dwarf sibling links

8d5d86d
Opened by Graydon Hoare at 2011-01-27 00:42:48

Looking something up in dwarf is currently linear in the size of the dwarf tables. Adding sibling links can drop this to a much faster scan, as we have a hierarchical module namespace to make use of.

(Worst case we can also add a DIE type for hashed child access or such, but leave that for future optimization)

  1. WONTFIX (not required for bootstrapping)

    Graydon Hoare at 2011-01-27 00:42:48