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From: "vincent-gcc at vinc17 dot net" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug tree-optimization/24021] VRP does not work with floating points
Date: Wed, 09 Feb 2022 17:31:03 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D24021

--- Comment #10 from Vincent Lef=C3=A8vre <vincent-gcc at vinc17 dot net> -=
--
(In reply to Vincent Lef=C3=A8vre from comment #9)
> Subnormals might also need to be considered as special cases: "Whether and
> in what cases subnormal numbers are treated as zeros is implementation
> defined." will be added to C23 (some behaviors are dictated by the hardwa=
re,
> e.g. ARM in some non-IEEE configurations), but I've asked for clarificati=
on
> in the CFP mailing-list.

Some details in http://www.open-std.org/jtc1/sc22/wg14/www/docs/n2797.htm=