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Re: Question about default optimizations
- From: staticx <mohamedboussaa3 at gmail dot com>
- To: gcc-help at gcc dot gnu dot org
- Date: Mon, 23 Nov 2015 06:19:05 -0700 (MST)
- Subject: Re: Question about default optimizations
- Authentication-results: sourceware.org; auth=none
- References: <1448141520901-1208211 dot post at n5 dot nabble dot com> <56530FBF dot 101 at embedded-brains dot de>
Hi Sebastian,
Yes I already checked that using gcc -Q -O* --help=optimizers.
I found that default optimizations (I mean options are not controlled
through CLI) :
#O2 = #O3, #O1 <#O2, #Os > #O2
I read also that researchers in iterative compilation community, made
assumptions to choose one of the standard optimization levels to apply over
their generated sequences.
I would like to confirm this findings with GCC hackers here :)
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