riscv / riscv-bitmanip

Working draft of the proposed RISC-V Bitmanipulation extension

Home Page:https://jira.riscv.org/browse/RVG-122

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Wrong description of logical with negate andn instruction

M-Ijaz-10x opened this issue · comments

Hi @ptomsich, @aswaterman,
I was going through the bitmanip public review specification and I found that the andn instruction from logical with negate group has the wrong description, the description says that we need to perform bitwise logical and, which should either be bitwise or logical and not bitwise logical and.
Thanks.

For better or worse, “bitwise logical” unambiguously means “bitwise”. This may be a divergence between C language parlance and computer-architecture parlance, but there’s no bug here.

Thanks @aswaterman for clearing the point