How check my CPU vector features are being used?

[OddLingo]

I have built whisper on a RISCV platform that supports RVV1.0 as well as some NPU things. I see that there is code in GGML that can take advantage of this through compiler intrinsics provided the right modules are selected at link time and the correct conditional compilations are taken. How can I check that these are in fact being used instead of some generic C code? The reason I ask is that when I run the JFK sample through whisper-cli it is spending 89% of its time in the 'encode' phase and taking nearly 3x the duration of the input audio.

[misutoneko]

Yes a good question, I've wondered this myself.
When you invoke whisper-cli it will list the hw features in the "system_info" line. So that's the first thing to check.

You can look for the function features.push_back() in the ggml source to see what gets added where.
The function that does the printing is in whisper.cpp, it's called whisper_print_system_info().

But you could also look directly at the build objects. For example, I took a look at this file:
build/ggml/src/CMakeFiles/ggml-cpu.dir/ggml-cpu/vec.cpp.o

When I ran bin-cpuflags-x86 on it, I got a list of features that is consistent with what I see on the system_info line.
I don't know if there's a similar program available for RISC-V but maybe the same thing can be accomplished with just disassembly (objdump?).