`gen_trace.py`: Represent SIMD operands as vectors

pulp-platform / snitch_cluster

An energy-efficient RISC-V floating-point compute cluster.

https://pulp-platform.github.io/snitch_cluster/

Apache License 2.0

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`gen_trace.py`: Represent SIMD operands as vectors #115

Closed colluca closed 4 months ago

colluca commented 8 months ago

Contributions

Extends the tracer to decode SIMD operands as vectors.
Redefines the flt_fmt() function which was buggy: the math.frexp() return values were inverted and also misinterpreted! These are base 2 mantissa and exponents.
Fixes a bug in main() where fpr_wb_info was used in place of gpr_wb_info.
Adds docstrings and comments to several functions.

colluca commented 4 months ago

This is very nice, thanks a lot! Is the CSV file auto-generated or was this assembled by hand?

This was assembled by hand by @viv-eth, with some corrections made by me, but it has not been exhaustively verified. Indeed, auto-generating this would be the best approach, but we didn't see an easy solution. Of course, if you see a way this could be done, it's worth considering it.