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	<title>
	「现代处理器结构」的评论	</title>
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	<link>https://blog.eastonman.com/blog/2021/05/modern-processor/</link>
	<description>临渊羡鱼，不如退而结网</description>
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		<title>
		评论者：Johnny		</title>
		<link>https://blog.eastonman.com/blog/2021/05/modern-processor/#comment-2587</link>

		<dc:creator><![CDATA[Johnny]]></dc:creator>
		<pubDate>Mon, 24 Mar 2025 08:51:38 +0000</pubDate>
		<guid isPermaLink="false">https://blog.eastonman.com/?p=639#comment-2587</guid>

					<description><![CDATA[文章的质量很高，点个赞<img src="https://s.w.org/images/core/emoji/16.0.1/72x72/1f44d.png" alt="👍" class="wp-smiley" style="height: 1em; max-height: 1em;" />]]></description>
			<content:encoded><![CDATA[<p>文章的质量很高，点个赞👍</p>
]]></content:encoded>
		
			</item>
		<item>
		<title>
		评论者：Logiase		</title>
		<link>https://blog.eastonman.com/blog/2021/05/modern-processor/#comment-2393</link>

		<dc:creator><![CDATA[Logiase]]></dc:creator>
		<pubDate>Fri, 19 Jul 2024 04:06:48 +0000</pubDate>
		<guid isPermaLink="false">https://blog.eastonman.com/?p=639#comment-2393</guid>

					<description><![CDATA[TQL]]></description>
			<content:encoded><![CDATA[<p>TQL</p>
]]></content:encoded>
		
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		<title>
		评论者：celestial		</title>
		<link>https://blog.eastonman.com/blog/2021/05/modern-processor/#comment-1159</link>

		<dc:creator><![CDATA[celestial]]></dc:creator>
		<pubDate>Wed, 26 Jul 2023 15:26:40 +0000</pubDate>
		<guid isPermaLink="false">https://blog.eastonman.com/?p=639#comment-1159</guid>

					<description><![CDATA[牛牛牛]]></description>
			<content:encoded><![CDATA[<p>牛牛牛</p>
]]></content:encoded>
		
			</item>
		<item>
		<title>
		评论者：壹無		</title>
		<link>https://blog.eastonman.com/blog/2021/05/modern-processor/#comment-138</link>

		<dc:creator><![CDATA[壹無]]></dc:creator>
		<pubDate>Mon, 15 Aug 2022 03:59:16 +0000</pubDate>
		<guid isPermaLink="false">https://blog.eastonman.com/?p=639#comment-138</guid>

					<description><![CDATA[学习了，我一个外行都大概看明白了]]></description>
			<content:encoded><![CDATA[<p>学习了，我一个外行都大概看明白了</p>
]]></content:encoded>
		
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		<item>
		<title>
		评论者：ty		</title>
		<link>https://blog.eastonman.com/blog/2021/05/modern-processor/#comment-115</link>

		<dc:creator><![CDATA[ty]]></dc:creator>
		<pubDate>Mon, 20 Jun 2022 09:24:09 +0000</pubDate>
		<guid isPermaLink="false">https://blog.eastonman.com/?p=639#comment-115</guid>

					<description><![CDATA[cache的正确读音不应该是&quot;擦车&quot;吗(]]></description>
			<content:encoded><![CDATA[<p>cache的正确读音不应该是&#8221;擦车&#8221;吗(</p>
]]></content:encoded>
		
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		<title>
		评论者：Ken		</title>
		<link>https://blog.eastonman.com/blog/2021/05/modern-processor/#comment-63</link>

		<dc:creator><![CDATA[Ken]]></dc:creator>
		<pubDate>Sat, 08 Jan 2022 09:35:11 +0000</pubDate>
		<guid isPermaLink="false">https://blog.eastonman.com/?p=639#comment-63</guid>

					<description><![CDATA[Intel VTune性能分析工具仍然在使用CPI这个术语，而不是IRC。]]></description>
			<content:encoded><![CDATA[<p>Intel VTune性能分析工具仍然在使用CPI这个术语，而不是IRC。</p>
]]></content:encoded>
		
			</item>
		<item>
		<title>
		评论者：Easton Man		</title>
		<link>https://blog.eastonman.com/blog/2021/05/modern-processor/#comment-30</link>

		<dc:creator><![CDATA[Easton Man]]></dc:creator>
		<pubDate>Sun, 29 Aug 2021 13:33:23 +0000</pubDate>
		<guid isPermaLink="false">https://blog.eastonman.com/?p=639#comment-30</guid>

					<description><![CDATA[回复给 &lt;a href=&quot;https://blog.eastonman.com/blog/2021/05/modern-processor/#comment-29&quot;&gt;weedyblues&lt;/a&gt;。

早期由于乘法和除法的延迟都很高，使用只需要一个周期就可以完成的位运算和移位来计算余数是编译器常见的优化。梅森素数和2的幂是进行这样优化的基础。了解等价变化的方法可以看这一篇上古文章&lt;a href=&quot;http://homepage.cs.uiowa.edu/~dwjones/bcd/mod.shtml&quot; title=&quot;Modulus without Division, a tutorial&quot; target=&quot;_blank&quot; rel=&quot;noopener nofollow ugc&quot;&gt;Modulus without Division, a tutorial&lt;/a&gt;
现在随着乘法的延迟降得很低，现代编译器大多使用乘法和移位来进行优化了。]]></description>
			<content:encoded><![CDATA[<p>回复给 <a href="https://blog.eastonman.com/blog/2021/05/modern-processor/#comment-29">weedyblues</a>。</p>
<p>早期由于乘法和除法的延迟都很高，使用只需要一个周期就可以完成的位运算和移位来计算余数是编译器常见的优化。梅森素数和2的幂是进行这样优化的基础。了解等价变化的方法可以看这一篇上古文章<a href="http://homepage.cs.uiowa.edu/~dwjones/bcd/mod.shtml" title="Modulus without Division, a tutorial" target="_blank" rel="noopener nofollow ugc">Modulus without Division, a tutorial</a><br />
现在随着乘法的延迟降得很低，现代编译器大多使用乘法和移位来进行优化了。</p>
]]></content:encoded>
		
			</item>
		<item>
		<title>
		评论者：weedyblues		</title>
		<link>https://blog.eastonman.com/blog/2021/05/modern-processor/#comment-29</link>

		<dc:creator><![CDATA[weedyblues]]></dc:creator>
		<pubDate>Sat, 28 Aug 2021 01:26:00 +0000</pubDate>
		<guid isPermaLink="false">https://blog.eastonman.com/?p=639#comment-29</guid>

					<description><![CDATA[挺好的科普，有一个疑问：
在多发射的超标量处理器中提到不同操作具有不同延迟，以及编译器可以发挥调度作用。那么梅森素数在这里会有什么作用呢？]]></description>
			<content:encoded><![CDATA[<p>挺好的科普，有一个疑问：<br />
在多发射的超标量处理器中提到不同操作具有不同延迟，以及编译器可以发挥调度作用。那么梅森素数在这里会有什么作用呢？</p>
]]></content:encoded>
		
			</item>
		<item>
		<title>
		评论者：Nanka		</title>
		<link>https://blog.eastonman.com/blog/2021/05/modern-processor/#comment-23</link>

		<dc:creator><![CDATA[Nanka]]></dc:creator>
		<pubDate>Thu, 22 Jul 2021 15:19:35 +0000</pubDate>
		<guid isPermaLink="false">https://blog.eastonman.com/?p=639#comment-23</guid>

					<description><![CDATA[不错，很好的科普]]></description>
			<content:encoded><![CDATA[<p>不错，很好的科普</p>
]]></content:encoded>
		
			</item>
		<item>
		<title>
		评论者：MWM1C		</title>
		<link>https://blog.eastonman.com/blog/2021/05/modern-processor/#comment-21</link>

		<dc:creator><![CDATA[MWM1C]]></dc:creator>
		<pubDate>Fri, 25 Jun 2021 16:46:26 +0000</pubDate>
		<guid isPermaLink="false">https://blog.eastonman.com/?p=639#comment-21</guid>

					<description><![CDATA[太强了]]></description>
			<content:encoded><![CDATA[<p>太强了</p>
]]></content:encoded>
		
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