rust-lang/cargo — pull request #599 by epdtry (2014-09-18 17:54:22+00:00)
Title: add codegen-units option to profile section

If the profile sets `codegen-units`, the value will be passed to `rustc`'s `-C codegen-units` option. If no value is set, then no argument will be passed, so `rustc` will use its default settings.