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A comment on RISC-V Is Sloooow. Parent comment

Re:RISC-V Is Sloooow by saagarjha on Wednesday March 11, 2026 @05:10AM (#47333298)
RISC-V is not particularly good at using opcode space, unfortunately.
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Re:RISC-V Is Sloooow by IshKebab on Wednesday March 11, 2026 @05:17AM (#47333345)
I don't think it's too bad. The compressed extension was arguably a mistake (and shouldn't be in RVA23 IMO), but apart from that there aren't any major blunders. You're probably thinking about how JAL(R) basically always uses x1/x5 (or whatever it is), but I don't think that's a huge deal.

About 1/3 of the opcode space is used currently so there's a decent amount of space left.

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