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travisdowns.github.io | ||
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sean.heelan.io
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| | | | | In the previous post I advocated for building systems that combine static and dynamic analysis for performance optimisation. By doing so, we can build tools that are much more useful than those focused on either analysis approach alone. In fact, for many static analyses it's likely that the difference between being useful at all and... | |
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nullprogram.com
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coredumped.dev
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| | | | | In this post, we are going to take a deep dive into pointer tagging, where metadata is encoded into a word-sized pointer. Doing so allows us to keep a compact representation that can be passed around in machine registers. This is very common in implementing dynamic programming languages, but can really be used anywhere that additional runtime information is needed about a pointer. We will look at a handful of different ways these pointers can be encoded and see how the compiler can optimize them for diff... | |
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cfallin.org
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