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It is part of the Bit Manipulation extension. So is count leading zeros. Unfortunately it is still in draft. The math extensions are not in draft.
by eleson 7y ago
It is part of the Bit Manipulation extension.
So is count leading zeros.
Unfortunately it is still in draft.
The math extensions are not in draft.
- ncmncm 7y agoBeing in an extension means you can't count on it being there.
- dralley 7y agoThat's a feature (for hardware designers) not a bug. RISC V is not really designed to be a good high performance oriented ISA. They're aimed square at the embedded market.
- ncmncm 7y agoIt's a feature for hardware designers working with 250 nm transistors. Modern designers working with modern processes have the problem of discovering what they can throw a million transistors at that will actually make real programs faster. Hint: bitmanips!