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[Bug bootstrap/52674] [4.7 regression] segfault during profiled LTO bootstrap
- From: "matt at use dot net" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Fri, 23 Mar 2012 20:26:44 +0000
- Subject: [Bug bootstrap/52674] [4.7 regression] segfault during profiled LTO bootstrap
- Auto-submitted: auto-generated
- References: <bug-52674-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52674
--- Comment #2 from Matt Hargett <matt at use dot net> 2012-03-23 20:26:44 UTC ---
I was doing profiledbootstrap with the bootstrap-lto config on x64 just fine
until about 6 weeks ago. The speedup in the resulting binary was notable, and
was very useful to have for my shorter gcc build iterations where I use
--disable-bootstrap. If it's not supposed to work, then configure should not
allow it IMO.
If you can recommend an intermediate make target I can use to make the
iteration time shorter, I can try and debug this issue further on my own and
report back. I can't figure out how to capture the resulting binary that
crashes, since the source isn't listed in the config.log when it fails, so any
help on that front would be appreciated.