[llvm] r228055 - [x86] Fix signed vs. unsigned comparison.

[Chandler Carruth]

On Tue, Feb 3, 2015 at 4:23 PM, Craig Topper <craig.topper at gmail.com> wrote:

> Why is Size an int? Doesn't Mask.size() return an unsigned value? Is there
> later use that expects an int?


Heh, yes. See the other thread.

Fundamentally, unsigned isn't the right type here. We do subtraction,
sometimes we use them with other integers in a context that has -1 as a
meaningful value.

I really wish that the 'size()' methods and such returned some signed type
here, but oh well.
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