Add mir-opt-level information #517
Description
Document how to dump mir with optimization by using mir-opt-level.
rustc +nightly -Zdump-mir=<val> -Zmir-opt-level=3
{{ message }}
Document how to dump mir with optimization by using mir-opt-level.
rustc +nightly -Zdump-mir=<val> -Zmir-opt-level=3