[PATCH] D28934: Write a new SSAUpdater
Matthias Braun via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Fri Jan 20 17:54:56 PST 2017
MatzeB added a comment.
With respect to SCC handling: In my experience the benefits of a truly minimal SSA form are very small and may not justify the extra complexity and calculations. At least back then we mostly added that version to the paper to present a complete solution, the default libfirm code didn't use it (but had a pass in the pipeline that would remove extra phis once).
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