On Mon, Aug 13, 2012 at 7:30 PM, Ray Dillinger <[email protected]> wrote:
> I suppose I could. But why? A typetag check and nonbranching execution of a conditional branch is 2 machine code instructions, > which is just not worth thinking about. Besides if the system > does even elementary type analysis it'll eliminate even that > microscopic penalty from 90% of the uses of eqv? anyway - and > could approach 100% in cases where *we* know we're comparing > eq?-safe types. > Beware the well-known but widely ignored fallacy of the Sufficiently Smart Compiler. Such compilers are rarely available.
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