compiler: Rework HaloSpot optimization #7206

Job	Run time
pytest-ubuntu-py311-gcc11-noomp-base	53m 37s
pytest-ubuntu-py311-gcc11-noomp-adjoint	39m 22s
pytest-ubuntu-py312-gcc12-omp-base	1h 11m 1s
pytest-ubuntu-py312-gcc12-omp-adjoint	51m 21s
pytest-ubuntu-py39-gcc7-omp-base	56m 23s
pytest-ubuntu-py39-gcc7-omp-adjoint	40m 45s
pytest-ubuntu-py310-gcc10-noomp-base	54m 25s
pytest-ubuntu-py310-gcc10-noomp-adjoint	40m 1s
pytest-ubuntu-py312-gcc13-omp-base	1h 8m 58s
pytest-ubuntu-py312-gcc13-omp-adjoint	51m 42s
pytest-ubuntu-py39-gcc9-omp-base	55m 55s
pytest-ubuntu-py39-gcc9-omp-adjoint	41m 44s
pytest-osx-py312-clang-omp-base	34m 45s
pytest-docker-py39-gcc-omp-base	3m 6s
pytest-docker-py39-gcc-omp-adjoint	3m 19s
pytest-docker-py39-icx-omp-base	3m 1s
pytest-docker-py39-icx-omp-adjoint	3m 11s
	11h 12m 36s

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