[llvm-dev] [RFC] Should we add isa_or_null<>?

[Quentin Colombet via llvm-dev]

+1 on not adding the new API as well.

> On May 4, 2019, at 10:52 PM, Sean Silva via llvm-dev <llvm-dev at lists.llvm.org> wrote:
> 
> +1 on not adding the new API
> 
> On Sat, May 4, 2019, 11:51 AM David Blaikie via llvm-dev <llvm-dev at lists.llvm.org <mailto:llvm-dev at lists.llvm.org>> wrote:
> +1, if we're voting. I don't think it adds to the readability of code
> for me personally.
> 
> On Sat, May 4, 2019 at 11:47 AM Chandler Carruth via llvm-dev
> <llvm-dev at lists.llvm.org <mailto:llvm-dev at lists.llvm.org>> wrote:
> >
> > On Mon, Apr 29, 2019, 02:37 David Chisnall via llvm-dev <llvm-dev at lists.llvm.org <mailto:llvm-dev at lists.llvm.org>> wrote:
> >>
> >> On 22/04/2019 15:15, Don Hinton via llvm-dev wrote:
> >> > Although there were a few no votes, it looks like there's a consensus
> >> > for adding a `isa_and_nonnull` type operator.  While there were some who
> >> > preferred `isa_nonnull`, it wasn't overwhelming, and since
> >> > `isa_and_nonnull` is already committed, I'm going to leave it as
> >> > `isa_and_nonnull` for the time being.
> >>
> >> Maybe I missed something, but it looked to me as if the consensus was
> >> that `isa_and_some_words<T>(foo)` imposed a higher cognitive load on the
> >> reader than `foo && isa<T>(foo)`, as well as being more to type in most
> >> cases, so wasn't worth adding.
> >
> >
> > FWIW, I agree with this and Bogner: this doesn't seem like an improvement worth the cost.
> >
> >>
> >> David
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