Eager Instruction Creation #708

Job	Run time
Performance (hand_written)	18m 26s
Performance (derived)	12m 32s
basic	9m 7s
rrules	7m 8s
integration_testing/misc	36m 45s
integration_testing/diff_tests	10m 38s
integration_testing/distributions	12m 35s
integration_testing/gp	16m 5s
integration_testing/special_functions	1m 24s
integration_testing/array	22m 7s
integration_testing/turing	9m 10s
	2h 35m 57s

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