[llvm] r354746 - [CGP] add special-cases to form unsigned add with overflow (PR40486)

[Sanjay Patel via llvm-commits]

Should be fixed here:
https://reviews.llvm.org/rL355345
...but it's disturbing that we're in this situation at all with
optimizations on. I don't know much about the new pass manager, but this
doesn't happen with the old pass manager because the IR isn't so full of
bogus values.

On Mon, Mar 4, 2019 at 2:07 PM Sanjay Patel <spatel at rotateright.com> wrote:

> Taking a look now...not sure if this is just an artifact of the reduction,
> but I see 4 of these:
> repro.cc:188:3: warning: control reaches end of non-void function
> [-Wreturn-type]
>
>
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