Improve Intrinsics #1983

Job	Run time
Performance (inter-AD)	10m 30s
basic	8m 14s
Performance (hand_written)	50m 24s
rrules	17m 2s
Performance (derived)	15m 17s
integration_testing/misc	41m 33s
integration_testing/diff_tests	5m 11s
integration_testing/distributions	5m 23s
integration_testing/gp	20m 17s
integration_testing/special_functions	1m 29s
integration_testing/array	9m 28s
integration_testing/turing	10m 13s
integration_testing/temporalgps	3m 16s
interface	1m 43s
	3h 20m 0s

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