add documentation

This commit is contained in:
alexlamsl 2016-09-21 00:25:04 +08:00
parent dd3e5bcd81
commit 75f3ed202c

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@ -348,6 +348,9 @@ to set `true`; it's effectively a shortcut for `foo=true`).
- `collapse_vars` -- default `false`. Collapse single-use `var` and `const`
definitions when possible.
- `reduce_vars` -- default `false`. Improve optimization on variables assigned
with and used as constant values.
- `warnings` -- display warnings when dropping unreachable code or unused
declarations etc.