Tests

[mypyc] Optimize away some bool/bit registers #12179

Job	Run time
Test mypyc suite with 32-bit Python	8m 15s
Test suite with py38-ubuntu, mypyc-compiled	19m 36s
Test suite with py38-windows-64	26m 11s
Test suite with py39-ubuntu	19m 14s
Test suite with py310-ubuntu	17m 40s
Test suite with py311-ubuntu, mypyc-compiled	17m 48s
Test suite with py312-ubuntu, mypyc-compiled	20m 18s
mypyc runtime tests with py39-macos	5m 11s
mypyc runtime tests with py38-debug-build-ubuntu	5m 24s
Type check our own code (py38-ubuntu)	1m 51s
Type check our own code (py38-windows-64)	2m 24s
Formatting and code style with Black + ruff	44s
	2h 24m 36s

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