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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug middle-end/101521] -ftrapv should become something like
 -fsanitize=undefined -fsanitize-undefined-trap-on-error
Date: Tue, 20 Jul 2021 09:48:37 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D101521

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2021-07-20
     Ever confirmed|0                           |1

--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Confirmed.  In particular this would free the compiler from caring about
-ftrapv when generating expressions on its own.  It was suggested that this
transform can be done at gimplification time using the
IFN_{ADD,SUB,MUL}_OVERFLOW machinery
(notably negate and division are missing here but easy to test for).=