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DBT-RISE-TGC
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DBT-RISE-TGC/src/iss/plugin/README.md

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pctrace

Trace functionality to allow visualizing coverage in lcov and cachegrind tools. Use environment variables NOCOMPRES and REGDUMP to toggle functionality.

  • NOCOMPRES: any value turns off the LZ4 compression
  • REGDUMP: any value switches to tracing the registers instead. Also turns off compression.

Known Bugs:

  • currently does not work correctly with jit backends, the plugin cant tell if instructions are compressed. Additionaly the cost of instrs that raise a trap is not known. It takes the cost of the instrid -1 (0 at the moment).