Hi everyone,
For my project, I need to add a custom instruction to RISCV in Gem5 that loads 2 sets of 128 elements (32-bit float) from the memory, computes the dot product, and stores them back to the memory. A starting point is using the RISCV vector instructions, but I want to reduce the instruction count and have only one instruction doing all these operations. So I was checking the vector .isa (decoder, memory, arith) files to get an idea of how to merge vle32, vadd_vv, vredsum.vs, and vse32 into a single instruction, but it looks a bit complicated to me and still couldn't figure out how I should modify it. I would appreciate it if anyone could give me some pointers on starting this or which files I need to check and modify. Thank you!
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