Re: Array accesses are boring

Florian Weimer <fw@deneb.enyo.de>
Fri, 15 Mar 2024 21:50:13 +0100

          From comp.compilers

Related articles
Array accesses are boring johnl@taugh.com (John R Levine) (2024-03-06)
Re: Array accesses are boring fw@deneb.enyo.de (Florian Weimer) (2024-03-15)
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From: Florian Weimer <fw@deneb.enyo.de>
Newsgroups: comp.compilers
Date: Fri, 15 Mar 2024 21:50:13 +0100
Organization: Compilers Central
References: 24-03-001
Injection-Info: gal.iecc.com; posting-host="news.iecc.com:2001:470:1f07:1126:0:676f:7373:6970"; logging-data="29784"; mail-complaints-to="abuse@iecc.com"
Keywords: Java, comment
Posted-Date: 16 Mar 2024 21:35:12 EDT

* John R. Levine:


> They instrumented a large set of Java benchmarks to look at the array
> accesses, over 3 billion of them in total. The majority fell into five
> simple access patterns. See the pictures on page 8 of the PDF.
>
> https://arxiv.org/abs/2403.02416


It's strange that they observed array lengths changing at the JVM
bytecode level. That shouldn't happen.
[Different sizes on different calls to the routine? -John]


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