Author: Eugene Nalimov
Date: 14:49:04 02/27/00
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IA-64 offers limited help: you can use simple sequence of instructions to find first/last non-zero byte, but after that you have to index 256-element table. I believe that on Itanium you can get back your result in ~10 CPU ticks. Eugene On February 27, 2000 at 14:53:23, Peter Fendrich wrote: >On February 27, 2000 at 12:08:40, Eugene Nalimov wrote: > >>On February 27, 2000 at 10:31:34, Peter Fendrich wrote: >> >>>For you assembler freaks :-) >>> >>>Is there a 64 bit version of BSR and BSF instructions? >>>I'm using inline assembler in MS 6.0 >>>//Peter >> >>No. Look at Crafty source, file vcinline.h, for the example how you can use 2 >>32-bit instructions. >> >>Eugene > >Thanks but I already have my own code for that. >Does the new 64-bit based processes offer 64-bits >BSR and BSF instructions? >//Peter
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