[LLVMdev] On LLD performance
rafael.espindola at gmail.com
Fri Mar 20 15:23:54 PDT 2015
On 20 March 2015 at 18:08, Rui Ueyama <ruiu at google.com> wrote:
> Newly-added undefined symbols may be solved by other file in the same
> archive, so you've got to restart scanning from beginning. You would visit
> the same symbol many times. Is that faster?
I don't expect many passes in practice.
You can also avoid looking at the symbols of members you already
added. To do that you would need to keep just a table of indexes or
"double buffer" the list: at each pass either a member is added or the
symbol pointers are added to the other buffer. At the end of the pass,
swap the buffer.
You can also save the hash computation.
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