Various minor improvements and compatibility enhancements #45
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hanno-becker
commented
Mar 31, 2024
hanno-becker
commented
- Add some missing instructions
- Improve compatibility with LLVM MCA
- Report cycles, IPC (estimated for solution)
- Report cycles, IPS (estimated for bound)
- Report wall time of optimization
- Allow late->late and early->early dependencies in loops
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With `config.visualize_expected_performance` set, a nice graph with legend would be shown, but not so if `visualize_expected_performance == False`. This commit largely copy-pastes the visualization code from `visualize_expected_performance` to the other visualization functions, so that a legend is printed in any case. Ultimately, this should be cleaned up a bit and a helper function introduced for the pretty printing of a performance/reordering graph.
The previous identifier is too strict e.g. for paths.
By specifying `-c llvm_mca_full`, all available statistics will now be printed. By default, only a subset is shown. By specifying, -c llvm_mca_issue_width_overwrite`, use the issue width of the SLOTHY model instead of LLVM MCA's one.
The solver provides us with a lower/upper bound for the objective it is minimizing/maximizing. In the case where we minimize the number of cycles, print the objective bound in the emitted assembly, so it's clear if the code is optimal according to the model, or can perhaps be improved by running SLOTHY with larger timeout.
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