K 10
svn:author
V 6
brooks
K 8
svn:date
V 27
2018-05-15T17:50:19.462817Z
K 7
svn:log
V 798
Merge r322325 from upstream.  This allows devel/godot to build in a
reasionable abount of time:

PeepholeOpt cleanup/refactor; NFC

- Less unnecessary use of `auto`
- Add early `using RegSubRegPair(AndIdx) =` to avoid countless
  `TargetInstrInfo::` qualifications.
- Use references instead of pointers where possible.
- Remove unused parameters.
- Rewrite the CopyRewriter class hierarchy:
   - Pull out uncoalescable copy rewriting functionality into
     PeepholeOptimizer class.
   - Use an abstract base class to make it clear that rewriters are
     independent.
- Remove unnecessary \brief in doxygen comments.
- Remove unused constructor and method from ValueTracker.
- Replace UseAdvancedTracking of ValueTracker with DisableAdvCopyOpt use.

PR:		228261
Reported by:	FreeBSD@ShaneWare.Biz

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