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[Bug lto/45375] [meta-bug] Issues with building Mozilla with LTO
- From: "tejohnson at google dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Tue, 11 Dec 2012 19:30:53 +0000
- Subject: [Bug lto/45375] [meta-bug] Issues with building Mozilla with LTO
- Auto-submitted: auto-generated
- References: <bug-45375-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45375
--- Comment #154 from Teresa Johnson <tejohnson at google dot com> 2012-12-11 19:30:53 UTC ---
What was the size of the gcc lto/pgo binary before the change to use the
histogram? Was it close to the gcc 4.7 lto/pgo size? In that case that is a
very large increase, ~25%.
Markus, could you attach to the bug one of the gcda files so that I can see the
program summary and figure out how far off the old hot bb threshold is from the
new histogram-based one? Also, it would be good to see the -fdump-ipa-inline
dumps before and after the regression (if necessary, the before one could be
from 4_7).