[dev_tools] Add symex_main CLI tool for symbolic path exploration and test generation - #4893
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… test generation Introduces `//xls/dev_tools:symex_main`, a developer CLI utility for standalone symbolic execution of XLS IR functions: - Supports loading IR packages via positional argument (`symex_main <design.ir>`) and optional entry function selection via `--top=<fn>`. - Supports concrete input parameter constraints via `--concrete_inputs=param=val,...` to prune path exploration concolically. - Prints human-readable path summaries with evaluated return values to stdout by default. - Emits testvector textprotos (`xls::testvector::SampleInputsProto`) via `--output_testvector_textproto=<path>`. - Supports path bounding via `--max_paths`. - Adds hermetic standalone Python CLI unit tests in `symex_main_test.py`. PiperOrigin-RevId: 974746096
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[dev_tools] Add symex_main CLI tool for symbolic path exploration and test generation
Introduces
//xls/dev_tools:symex_main, a developer CLI utility for standalone symbolic execution of XLS IR functions:symex_main <design.ir>) and optional entry function selection via--top=<fn>.--concrete_inputs=param=val,...to prune path exploration concolically.xls::testvector::SampleInputsProto) via--output_testvector_textproto=<path>.--max_paths.symex_main_test.py.