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[Bug c/66682] Lots of macro expansion, very slow compilation
- From: "rguenth at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Mon, 29 Jun 2015 08:51:09 +0000
- Subject: [Bug c/66682] Lots of macro expansion, very slow compilation
- Auto-submitted: auto-generated
- References: <bug-66682-4 at http dot gcc dot gnu dot org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66682
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |DUPLICATE
--- Comment #9 from Richard Biener <rguenth at gcc dot gnu.org> ---
(In reply to Mikhail Maltsev from comment #6)
> Created attachment 35859 [details]
> Sampling profile of cc1
>
> It's hard to say what's wrong here (why do we perform so many lookups in
> mem_attrs hash table? collisions?) without looking further.
Yes, global variables. See PR60291.
*** This bug has been marked as a duplicate of bug 60291 ***