compiler: fix operator arg processing and subsampling size #294

Job	Run time
pytest-docker-py310-icx-omp-base	4m 14s
pytest-docker-py310-gcc-omp-adjoint	5m 15s
pytest-docker-py310-gcc-omp-arm64-adjoint	5m 43s
pytest-docker-py310-gcc-omp-arm64-base	3m 32s
pytest-osx-py312-clang-omp-base	1m 46s
pytest-docker-py310-icx-omp-adjoint	6m 6s
pytest-docker-py310-gcc-omp-base	3m 29s
pytest-ubuntu-py310-gcc9-omp-adjoint	6m 0s
pytest-ubuntu-py310-gcc14-omp-base	3m 51s
pytest-ubuntu-py313-gcc14-omp-base	3m 23s
pytest-ubuntu-py312-gcc12-cxxomp-adjoint	1m 32s
pytest-ubuntu-py311-gcc11-cxxnoomp-adjoint	4m 26s
pytest-ubuntu-py311-gcc11-cxxnoomp-base	3m 46s
pytest-ubuntu-py310-gcc9-omp-base	3m 49s
pytest-ubuntu-py312-gcc13-omp-base	1m 32s
pytest-ubuntu-py313-gcc14-omp-adjoint	5m 48s
pytest-ubuntu-py312-gcc13-omp-adjoint	6m 44s
pytest-ubuntu-py311-gcc10-noomp-base	3m 21s
pytest-ubuntu-py311-gcc10-noomp-adjoint	6m 3s
pytest-ubuntu-py310-gcc14-omp-adjoint	1m 21s
pytest-ubuntu-py312-gcc12-cxxomp-base	1m 50s
	1h 23m 31s

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