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[Bug target/80450] -std=c99 breaks -frounding-math on i686
- From: "rguenth at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Thu, 20 Apr 2017 10:27:38 +0000
- Subject: [Bug target/80450] -std=c99 breaks -frounding-math on i686
- Auto-submitted: auto-generated
- References: <bug-80450-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80450
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
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CC| |jsm28 at gcc dot gnu.org
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
I think unless you use long double you can't rely on -O2 -frounding-math
behavior.
-std=c99 enables -fexcess-precision=standard.
I think the unconditional zero is correct here.