aeubanks added a comment. I'm looking at enabling the -enable-npm-optnone flag and FullUnroll.ll fails. I understand that loop unrolling should be forced when some metadata is present, but the FullUnroll.ll test seems to check for a lot more than that. It checks for (roughly) two unconditional branches and no conditional branches. Running the test under -debug-pass-manager and --print-after-all, , it looks like InstCombine does a lot of work removing instructions, and SimplifyCFG is ultimately what removes all the conditional branches. But InstCombine and SimplifyCFG shouldn't run on an optnone function, right?
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