compiler: Introduce heuristic for loop fission #42

Job	Run time
pytest-ubuntu-py312-gcc12-cxxomp-base	54m 51s
pytest-ubuntu-py310-gcc9-omp-base	43m 39s
pytest-docker-py310-gcc-omp-base	37m 18s
pytest-ubuntu-py310-gcc14-omp-adjoint	30m 56s
pytest-ubuntu-py310-gcc9-omp-adjoint	30m 36s
pytest-ubuntu-py312-gcc12-cxxomp-adjoint	39m 2s
pytest-ubuntu-py311-gcc11-cxxnoomp-base	44m 33s
pytest-docker-py310-gcc-omp-arm64-base	1h 29m 25s
pytest-docker-py310-gcc-omp-adjoint	26m 4s
pytest-ubuntu-py312-gcc13-omp-base	52m 13s
pytest-ubuntu-py311-gcc11-cxxnoomp-adjoint	30m 59s
pytest-docker-py310-gcc-omp-arm64-adjoint	49m 51s
pytest-ubuntu-py311-gcc10-noomp-base	40m 27s
pytest-osx-py312-clang-omp-base	37m 32s
pytest-docker-py310-icx-omp-base	31m 26s
pytest-ubuntu-py311-gcc10-noomp-adjoint	28m 9s
pytest-ubuntu-py310-gcc14-omp-base	43m 39s
pytest-ubuntu-py313-gcc14-omp-base	48m 6s
pytest-ubuntu-py312-gcc13-omp-adjoint	34m 17s
pytest-docker-py310-icx-omp-adjoint	26m 24s
pytest-ubuntu-py313-gcc14-omp-adjoint	31m 59s
	14h 11m 26s

Provide feedback