#11168: rubiks fails doctest with gcc 4.6.0 and -O2 optimisation.
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Reporter: drkirkby | Owner:
drkirkby
Type: defect | Status:
needs_review
Priority: major | Milestone:
sage-4.7
Component: solaris | Resolution:
Keywords: | Work_issues:
Upstream: Reported upstream. Developers acknowledge bug. | Reviewer:
John Palmieri
Author: David Kirkby, Jeroen Demeyer | Merged:
Dependencies: |
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Comment(by jdemeyer):
Replying to [comment:22 drkirkby]:
> can you check this option has not slowed things significantly. If it
slower than -O1, then I think it would be better to revert to -O1.
On my machine ({{{Linux arcanis 2.6.34-gentoo-r12 #2 SMP Mon Dec 6
17:16:04 CET 2010 x86_64 Intel(R) Core(TM)2 Duo CPU T5870 @ 2.00GHz
GenuineIntel GNU/Linux}}}) with gcc 4.6.0, the long test
`sage/interfaces/rubik.py` takes:
1. p14 (using `-O1`): 39.9 s
2. p15 (using `-O2 -fno-ivopts`): 37.5 s
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/11168#comment:23>
Sage <http://www.sagemath.org>
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