Messages in this thread | | | From | Denis Vlasenko <> | Subject | Re: kernel + gcc 4.1 = several problems | Date | Wed, 3 Jan 2007 22:48:38 +0100 |
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On Wednesday 03 January 2007 21:38, Linus Torvalds wrote: > On Wed, 3 Jan 2007, Denis Vlasenko wrote: > > > > Why CPU people do not internally convert cmov into jmp,mov pair? > ... > It really all boils down to: there's simply no real reason to use cmov. > It's not horrible either, so go ahead and use it if you want to, but don't > expect your code to really magically run any faster.
IOW: yet another slot in instruction opcode matrix and thousands of transistors in instruction decoders are wasted because of this "clever invention", eh? -- vda - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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