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[Bug tree-optimization/69580] [6 Regression] From 26 seconds to 10 minutes moving from gcc 5.3.1 to gcc 6.0.0
- From: "dcb314 at hotmail dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Mon, 01 Feb 2016 20:51:28 +0000
- Subject: [Bug tree-optimization/69580] [6 Regression] From 26 seconds to 10 minutes moving from gcc 5.3.1 to gcc 6.0.0
- Auto-submitted: auto-generated
- References: <bug-69580-4 at http dot gcc dot gnu dot org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69580
--- Comment #5 from David Binderman <dcb314 at hotmail dot com> ---
(In reply to Jeffrey A. Law from comment #4)
> With the limiter, the time should come back down into the reasonable range
> and I'm going drop this to a P4 once that change goes in. However, I'm
> going to keep this open because I think fsm_find_thread_path is horrible in
> the amount of work it duplicates and needs to be rewritten.
I have another test case that currently seems to take about 17 minutes
with -O2.
Hopefully, this second test case is just a duplicate, but I'll wait until
your change has gone in to test it.
Good work and I look forward to seeing your change.