cmov: use macros to write tests (#1290) #2011

Job	Run time
test (stable)	19s
test (1.85.0)	19s
build (stable, thumbv7em-none-eabi)	18s
build (1.85.0, thumbv7em-none-eabi)	17s
build (stable, wasm32-unknown-unknown)	14s
minimal-versions / minimal-versions	20s
build (1.85.0, wasm32-unknown-unknown)	17s
	2m 4s

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