[llvm] r368339 - [MBP] Disable aggressive loop rotate in plain mode

[Jeremy Morse via llvm-commits]

Ooof, this is PR42773 [0], a patch for which landed on Thursday
(r369026), pull-up to LLVM-9 in [1]. I've good confidence this should
now work, the diagnosis in the thread above matches the situation in
[0].

It was most definitely a debug-info / LiveDebugValues bug; sorry I
didn't pick up this thread earlier, I've been out-of-office and my
llvm-commits filter-fu is poor.

[0] https://bugs.llvm.org/show_bug.cgi?id=42773
[1] https://bugs.llvm.org/show_bug.cgi?id=43018

--
Thanks,
Jeremy