flag to run the demand analysis a second time
There are some tickets documenting runtime bugs that can be cleaned up by running the demand analyzer (followed by a simplifier run) a second time at the end of the pipeline: #4941, #5302, #6087, #6070. #10626 ? Others?
The -flate-dmd-anal flag has been committed to HEAD (cf #7782 (closed) below).
The remaining task is to determine if
-O2 should imply
-flate-dmd-anal. It currently does not: late demand analysis is off by default.
See LateDmd for more info.