On Tue, Aug 13, 2013 at 08:14:39AM -0700, H. Peter Anvin wrote: > On 08/12/2013 10:02 PM, Cyrill Gorcunov wrote: > > > > There is a case when you don't need a mask completely. And because this > > pte conversion is on hot path and time critical I kept generated code > > as it was (even if that lead to slightly less clear source code). > > > > Does it actually matter, generated-code-wise, or is the compiler smart > enough to figure it out? The reason I'm asking is because it makes the
gcc-4.7.2 is smart enough to suppress useless masking (ie ((1u << 31) - 1)) completely but I don't know if this can be assumed for all gcc series. > code much harder to follow. I see. OK, I'll try to prepare more readable macro helpers. > > The other thing is can we please pretty please call it something other > than "frob"? Sure. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
