Hi Mattew,
On Fri, Dec 23, 2016 at 09:20:03AM -0800, Matthew Wilcox wrote:
> From: Matthew Wilcox
>
> This saves 20 bytes on my x86-64 build, mostly due to alignment
> considerations ... I think it actually saves about five bytes of
> instructions. There's really two parts to this commit. Firs
On Fri, Dec 23 2016, Matthew Wilcox wrote:
> From: Matthew Wilcox
>
> First, the first half of the test: (!nbits || start >= nbits) is
> trivially a subset of the second half, since nbits and start are both
> unsigned.
Yeah, I filed that as a missed optimization bug with gcc a year ago, but
it
From: Matthew Wilcox
This saves 20 bytes on my x86-64 build, mostly due to alignment
considerations ... I think it actually saves about five bytes of
instructions. There's really two parts to this commit. First, the
first half of the test: (!nbits || start >= nbits) is trivially a subset
of the
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