On Thu, Feb 15, 2018 at 6:44 PM, David Vandevoorde <daveed@edg.com> wrote:


> On Feb 15, 2018, at 5:14 PM, Myria <myriachan@gmail.com> wrote:
>
> I'm personally on the side of defining signed overflow as wrapping,
> but compiler people do have a point that it would inhibit
> optimizations in certain cases involving signed integers.

My understanding is that it kills a significant optimization opportunity (that is currently taken advantage of by compilers).
I also believe that it makes it harder for tooling to flag unintentional signed overflow.