[features] Add feature for Oz minsize opt level #40
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
When enabling LTO, Oz is required to have a smaller firmware size.
This PR adds the "minsize" feature, which will be enabled along with LTO on some ROM_EXT targets through bazel transition.
In our tests with ROM_EXT on the master branch,
Os + LTO
~ +2,904 bytesOz
~ -1,260 bytesOz + LTO
~ -1,640 bytes