Merge pull request #5348 from unisonweb/topic/jit-optimize #9252

Job	Run time
ormolu	6s
build ucm (ubuntu-20.04)	15s
build ucm (macOS-12)	17s
build ucm (windows-2019)	21s
generate jit source	7s
run interpreter tests (ubuntu-20.04)	6s
run transcripts (ubuntu-20.04)	7s
run interpreter tests (macOS-12)	17s
run transcripts (macOS-12)	18s
run transcripts (windows-2019)	17s
build jit binary / build jit binary (ubuntu-20.04)	2m 8s
build jit binary / build jit binary (macOS-12)	5m 49s
build jit binary / build jit binary (windows-2019)	5m 33s
test jit / test jit (ubuntu-20.04)	1m 29s
test jit / test jit (macOS-12)	2m 23s
	19m 33s

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