ir: Dig into atomic types. #2348

Job	Run time
docs	26s
minimal	18s
msrv	51s
rustfmt-clippy	26s
check-cfg	21s
quickchecking	19s
test (ubuntu-latest, 9.0, 1, 0, 0, 0, 0)	1m 43s
test-book	6s
test-expectations (ubuntu-latest)	44s
test (ubuntu-latest, 9.0, 1, 0, 0, 1, 0)	2m 0s
test-expectations (macos-12)	1m 7s
test (ubuntu-latest, 9.0, 1, 0, 1, 0, 0)	1m 50s
test (ubuntu-latest, 9.0, 1, 0, 1, 1, 0)	1m 53s
test (ubuntu-latest, 9.0, 1, 1, 0, 0, 0)	2m 32s
test (ubuntu-latest, 9.0, 1, 1, 0, 1, 0)	2m 32s
test (ubuntu-latest, 9.0, 1, 1, 1, 0, 0)	2m 7s
test (ubuntu-latest, 9.0, 1, 1, 1, 1, 0)	2m 14s
test (ubuntu-latest, 16.0, 1, 0, 0, 0, 0)	2m 40s
test (ubuntu-latest, 16.0, 1, 0, 0, 1, 0)	3m 17s
test (ubuntu-latest, 16.0, 1, 0, 1, 0, 0)	2m 57s
test (ubuntu-latest, 16.0, 1, 0, 1, 1, 0)	2m 29s
test (ubuntu-latest, 16.0, 1, 1, 0, 0, 0)	3m 3s
test (ubuntu-latest, 16.0, 1, 1, 0, 1, 0)	3m 11s
test (ubuntu-latest, 16.0, 1, 1, 1, 0, 0)	3m 3s
test (ubuntu-latest, 16.0, 1, 1, 1, 1, 0)	3m 5s
test (ubuntu-latest, 16.0, 0, 0, 1)	1m 49s
test (macos-12, 9.0, 0, 0, 0)	1m 53s
success	1s
	48m 57s

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