Re: ADD SUB kontra INC DEC

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Article #2365

#2365

From: Andrzej Grażyński
Date: Sun, 08 May 2011 16:28

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W dniu 2010-07-20 17:15, yesma pisze:
> http://www.agner.org/instruction_tables.pdf
> 9 List of instruction timings and μop breakdown for P4E
>
> Tyle że niema tutaj podane dla ADD, SUB operands r,i
>
> Instruction ADD, SUB INC, DEC
> Operands r,r r
> µops 1 2
> Microcode 0 0
> Latency 1 1
> Throughput 0.25 0.5
> Port 0/1 0/1
> Unit alu0/1 alu0/1
>
> Czy nielepiej jest stosować zawsze ADD SUB zamiast INC DEC ?
INC/DEC nie ruszają flagi CF, co czasem jest wygodne.

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From: Andrzej Grażyński <grazynsk@petex.com.pl>
Newsgroups: pl.comp.lang.asm
Subject: Re: ADD SUB kontra INC DEC
Date: Sun, 08 May 2011 18:28:16 +0200
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