Rework field and u32 comparison instructions #4902

Job	Run time
Clippy	1m 16s
no-std (stable, wasm32-unknown-unknown)	1m 29s
rustfmt	14s
Check Rust stable on ubuntu with --all-targets --no-default-features	1m 25s
no-std (nightly, wasm32-unknown-unknown)	1m 34s
Check Rust stable on ubuntu with --all-targets	1m 10s
Test Rust stable on ubuntu with --profile test-release	10m 17s
Test Rust nightly on windows-2022	0s
Check Rust stable on ubuntu with --all-targets --all-features	1m 23s
Test Rust stable on ubuntu with --profile test-release --doc	5m 58s
Check Rust nightly on ubuntu with --all-targets --no-default-features	1m 19s
Check Rust nightly on ubuntu with --all-targets	2m 59s
Check Rust nightly on ubuntu with --all-targets --all-features	1m 19s
Test Rust nightly on ubuntu with --profile test-release	10m 54s
Test Rust nightly on ubuntu with --profile test-release --doc	6m 39s
	47m 56s

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