[llvm-dev] a tagged architecture, the elephant in the undef / poison room

[Peter Lawrence via llvm-dev]

Krzysztof,
                
IEEE-754 defines certain float bit-patterns to be Nan,
But there is no bit pattern for an int that can encode a Nan.

Peter

> On Jun 16, 2017, at 11:02 AM, via llvm-dev <llvm-dev at lists.llvm.org> wrote:
> 
> 
> Why do you insist on treating it as an attribute? It's more like NaN for 
> floating point: "not a value".
> 
> -Krzysztof

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