[llvm-commits] [llvm] r163302 - in /llvm/trunk: lib/Transforms/Utils/SimplifyCFG.cpp test/Transforms/SimplifyCFG/switch_create.ll test/Transforms/SimplifyCFG/switch_to_lookup_table.ll

[Anton Korobeynikov]

> Have you look into integrating this optimization into SelectionDAGBuilder instead? It seems like it very well could benefit from having target information. I am not certain it's a good idea to have switch optimizations spread out among different passes.
The SDAGs are one-BB-at-a-time, which makes various switch lowering &
optimization things nightmare, because it touches a lot of BBs, PHIs
need to be updated, etc.

-- 
With best regards, Anton Korobeynikov
Faculty of Mathematics and Mechanics, Saint Petersburg State University