Agreed on the sentiment. There is zero chance of getting it into the base, C or even M sets, as they have existing implementations. But maybe a lone Z (without

Agreed on the sentiment. There is zero chance of getting it into the base, C or even M sets, as they have existing implementations. But maybe a lone Z (without the usual lowercase letters) could mean just this instruction. I found this to be a helpful discussion: https://www.embecosm.com/2019/10/22/gcc-risc-v-bit-manipulation-extension/ https://www.embecosm.com/2019/10/22/gcc-risc-v-bit-manipulat...