Re: [RFC][PATCH] introduce ptr_diff()

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From: David Howells
Date: Thursday, August 19, 2010 - 5:03 am

Namhyung Kim <namhyung@gmail.com> wrote:


You shouldn't need to do this.  The compiler's optimiser should switch a
divide to a shift for a power-of-2 divisor.

David
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Messages in current thread:
[RFC][PATCH] introduce ptr_diff(), Namhyung Kim, (Thu Aug 19, 4:37 am)
Re: [RFC][PATCH] introduce ptr_diff(), Bernd Petrovitsch, (Thu Aug 19, 4:57 am)
Re: [RFC][PATCH] introduce ptr_diff(), David Howells, (Thu Aug 19, 5:03 am)
Re: [RFC][PATCH] introduce ptr_diff(), Andi Kleen, (Thu Aug 19, 5:23 am)
Re: [RFC][PATCH] introduce ptr_diff(), Matthew Wilcox, (Thu Aug 19, 5:40 am)
Re: [RFC][PATCH] introduce ptr_diff(), Bernd Petrovitsch, (Thu Aug 19, 5:48 am)
Re: [RFC][PATCH] introduce ptr_diff(), Andi Kleen, (Thu Aug 19, 5:58 am)
Re: [RFC][PATCH] introduce ptr_diff(), Andi Kleen, (Thu Aug 19, 5:59 am)
Re: [RFC][PATCH] introduce ptr_diff(), Bernd Petrovitsch, (Thu Aug 19, 6:05 am)
Re: [RFC][PATCH] introduce ptr_diff(), Andi Kleen, (Thu Aug 19, 6:39 am)
Re: [RFC][PATCH] introduce ptr_diff(), Namhyung Kim, (Thu Aug 19, 8:53 am)
Re: [RFC][PATCH] introduce ptr_diff(), Bernd Petrovitsch, (Thu Aug 19, 9:04 am)
Re: [RFC][PATCH] introduce ptr_diff(), Namhyung Kim, (Thu Aug 19, 9:12 am)
Re: [RFC][PATCH] introduce ptr_diff(), Måns Rullgård, (Thu Aug 19, 9:18 am)
Re: [RFC][PATCH] introduce ptr_diff(), Al Viro, (Fri Aug 20, 5:07 am)
Re: [RFC][PATCH] introduce ptr_diff(), Al Viro, (Fri Aug 20, 5:12 am)