Re: [PATCH 1/12] random pt4: Create new rol32/ror32 bitops

[Chuck Ebbert]

On Sat, 22 Jan 2005 at 20:13:24 -0800 Matt Mackall wrote:

> So I think tweaks for x86 at least are unnecessary. 

 So the compiler looks for that specific sequence of instructions:

        (a << b) | (a >> (sizeof(a) * 8 - b)

and recognizes that it means rotation?  Wow.


Chuck
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