[PATCH] D33587: [DAGCombine] Do several rounds of combine.

[Hiroshi Inoue via Phabricator via llvm-commits]

inouehrs added a comment.

Can we get same optimization results if we run DAG combiner pass multiple times instead of iterating in the pass internally?
If so, I think it is better to run the pass without the internal iteration multiple times for providing more flexibility to control the tradeoff between the code quality and the compilation time (e.g. based on optimization level).


https://reviews.llvm.org/D33587