In article <7i15hp$mc2@ftp.kvaerner.com>, "Tarjei Tj�stheim Jensen" writes: > > Robert Dewar wrote >>For example, in GNORT mode, the compiler will generate an open >>loop for a block copy, to avoid calling the bcopy routine in >>the run-time > > > I'm rather surprised. I would assume that the most eficient way of doin this > would be to use inline assembly code. I thought most cpus have a nice set of > special instructions that will do this. Could there be problems with using > these instructions? Those with great concern for speed will often be using RISC machines, where instruction sets have been simplified. Presuming reasonable caching inside the CPU, data loads and stores will dominate the copy time. Larry Kilgallen