I think folks are being a little optimistic about the impact of having
MIPS code in tree. My experience has been that it usually does end up
being a distraction.
If we truly treat MIPS as a tier-3 platform - for example, if we don't
hesitate to remove, refactor, or even just fiddle with the types of
stuff that a grep tells us the MIPS back end uses - then in effect, the
MIPS port will only work after one of its maintainers has just landed a
merge. People interested in MIPS will only find those changesets useful.
If that's the case, then it doesn't seem any better than a
separately-maintained branch --- and that, at least, will be a repo in
which MIPS users can trust that tip works.
In other words, if the presence of the MIPS code in the tree isn't going
to affect our tier-1 decisions; and if MIPS users will find the branch
repo more valuable anyway; then what is the value of having the code in
tree?
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