compiler: Rework HaloSpot optimization #7184

Job	Run time
pytest-ubuntu-py311-gcc11-noomp-base	52m 1s
pytest-ubuntu-py311-gcc11-noomp-adjoint	40m 26s
pytest-ubuntu-py312-gcc12-omp-base	1h 12m 1s
pytest-ubuntu-py312-gcc12-omp-adjoint	51m 28s
pytest-ubuntu-py39-gcc7-omp-base	55m 30s
pytest-ubuntu-py39-gcc7-omp-adjoint	41m 46s
pytest-ubuntu-py310-gcc10-noomp-base	54m 54s
pytest-ubuntu-py310-gcc10-noomp-adjoint	40m 16s
pytest-ubuntu-py312-gcc13-omp-base	1h 12m 2s
pytest-ubuntu-py312-gcc13-omp-adjoint	51m 46s
pytest-ubuntu-py39-gcc9-omp-base	57m 21s
pytest-ubuntu-py39-gcc9-omp-adjoint	40m 56s
pytest-osx-py312-clang-omp-base	39m 7s
pytest-docker-py39-gcc-omp-base	49m 11s
pytest-docker-py39-gcc-omp-adjoint	36m 24s
pytest-docker-py39-icx-omp-base	39m 35s
pytest-docker-py39-icx-omp-adjoint	36m 54s
	13h 51m 38s

Provide feedback