tomatoely@sh.itjust.works to

Today I Learned@lemmy.worldEnglish · 2 months ago

TIL Intel Pentium Processors used to work with RISC operations by decoding CISC instructions before executing them

fanael.github.io

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TIL Intel Pentium Processors used to work with RISC operations by decoding CISC instructions before executing them

fanael.github.io

tomatoely@sh.itjust.works to

Today I Learned@lemmy.worldEnglish · 2 months ago

4

The legend of "x86 CPUs decode instructions into RISC form internally" - Fanael's random ruminations

fanael.github.io

A dive into what x86 instruction are decoded into various processors, to determine the truth of the idea that they're just RISC-like internally.

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kopasz7@sh.itjust.works
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10·
2 months ago
Isn’t this the case for decades now? Complex instructions are broken down into micro ops.
- B0rax@feddit.org
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  8·
  2 months ago
  The linked article claims that this is no longer the case since about a decade now.
  - Lojcs@piefed.social
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    4·
    2 months ago
    Risk instruction is not very accurate since even arm has them but microops still exist

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