I had a look at the TI SHARC manual at https://www.analog.com/media/en/dsp-documentation/processor-manuals/adsp-2136x_2137x_214xx_pgr_rev2.4.pdf https://www.ana

I had a look at the TI SHARC manual at https://www.analog.com/media/en/dsp-documentation/processor-manuals/adsp-2136x_2137x_214xx_pgr_rev2.4.pdf https://www.analog.com/media/en/dsp-documentation/processor-... to see how they did it. It seems to me that the SHARC assembly instructions would tell you the exact variant with the same precision as the traditional cryptic mnemonics. Multiplication results are stored in a double-length result register called MRF. The type of inputs is indicated by a modifier word in parentheses, so that multiplication between two signed integers is indicated as MRF = R2 * R3 (SSI); whereas multiplication between a signed and unsigned integer is MRF = R2 * R3 (SUI); There is no popcount, but binary log is written like R2 = LOGB F3; and presumably similar notation could be used for popcount. Cache access seems to be controlled by mode bits in a control register. Sign extension is supported in only a few instructions, but is indicated by the trailing modifier (SE).