Sub-microsecond benchmarks are dominated by the ~60ns per-iteration
valgrind start/stop cost in CodSpeed simulation mode. Add kInnerIterations
(1000) inner loops to all fast benchmarks so the actual work dominates.
Move DoNotOptimize calls outside inner loops to prevent artificial overhead.
Also address review feedback:
- Use tokenless CodSpeed (public repo, no CODSPEED_TOKEN needed)
- Fix warning message to show component-specific path
- Fix stray ". :" in error message
- Verify pinned SHA on re-runs to prevent stale checkouts
- Remove BM_ prefix from all benchmark names (unnecessary convention)
- Remove bench_application_loop.cpp (App needs pre_setup/setup which
requires full code generation; will revisit as integration benchmark)
- Fix extra_include_dirs to use os.path.relpath for sibling directories
Core is not a component — its benchmarks belong in tests/benchmarks/core/
not tests/benchmarks/components/core/. Add extra_include_dirs parameter
to build_and_run to support non-component benchmark directories.
J. Nick Koston