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[Bug middle-end/87813] sprintf pass calling evrp at -O0 and setting global ranges which affect strnlen expansion
- From: "rguenther at suse dot de" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Mon, 05 Nov 2018 07:59:48 +0000
- Subject: [Bug middle-end/87813] sprintf pass calling evrp at -O0 and setting global ranges which affect strnlen expansion
- Auto-submitted: auto-generated
- References: <bug-87813-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87813
--- Comment #7 from rguenther at suse dot de <rguenther at suse dot de> ---
On Mon, 5 Nov 2018, aldyh at gcc dot gnu.org wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87813
>
> --- Comment #6 from Aldy Hernandez <aldyh at gcc dot gnu.org> ---
> (In reply to Martin Sebor from comment #5)
> > The sprintf pass doesn't do any optimization at -O0 but it still runs to
> > diagnose the subset of mistakes that are detectable even without
> > optimization.
>
> Yes, but my point is that the way things are laid out right now, we are running
> full evrp at -Og and *that* seems like an optimization, because it's affecting
> the IL later on.
Running EVRP at -Og probably isn't so bad, but yes - it takes compile-time
(also at -O0)