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[Bug pch/53880] [4.8 Regression] compile time regression when generating precompiled headers for boost
- From: "steven at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Mon, 30 Jul 2012 16:15:35 +0000
- Subject: [Bug pch/53880] [4.8 Regression] compile time regression when generating precompiled headers for boost
- Auto-submitted: auto-generated
- References: <bug-53880-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53880
--- Comment #30 from Steven Bosscher <steven at gcc dot gnu.org> 2012-07-30 16:15:35 UTC ---
Created attachment 27898
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=27898
Hack to avoid quadratic loops
This makes use of the assumption that this_obj and its comparison companion are
loop invariant (they have to be for pointer rewriting). Drops compile time to
worse-than-gcc47-but-acceptable levels.
Markus, could you give this a try, please?