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2016 Oct 19
3
RFC: Killing undef and spreading poison
...e
equivalent. If this is in fact true about the proposal, I would want to
really dig into why and whether anything could be done to make them
equivalent.
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2016 Oct 18
5
RFC: Killing undef and spreading poison
> On 10/18/2016 5:06 AM, Nuno Lopes via llvm-dev wrote:
>> Another use is, for example, to implement bit-fields:
>> a.x = 2
>> becomes:
>> %v = load %a
>> %v2 = freeze %v ; %v could be uninitialized data (poison)
>> %v3 = ... bitmasking...
>> store %a, %v3
>
> It seems like you're saying that an integer load which touches any
>