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A comment on It’s Not Always iCache. Parent comment

Re:It’s Not Always iCache by ComputerGuru on Wednesday July 14, 2021 @06:11PM (#27839081)
x86_64 has 15 named registers, but many more in practice. Register renaming is used to bypass code that juggles between them.
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Re:It’s Not Always iCache by CalChris on Wednesday July 14, 2021 @06:51PM (#27839467)
I’m aware of that. But the compiler is limited to using the architectural register sets.
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Re:It’s Not Always iCache by ComputerGuru on Wednesday July 14, 2021 @10:10PM (#27840759)
Right, but the modern CPU pretty much ignores that altogether and looks only at dependency chains to decide which and how many registers to use.
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