[PATCH] D37045: [x86] NFC - Refactor the custom lowering of `(load; op; store)` RMW sequences.

[Chandler Carruth via Phabricator via llvm-commits]

chandlerc created this revision.
Herald added subscribers: mcrosier, sanjoy.

This extracts the code out of a giant switch in preparation for expanding it to
handle operations other thin `inc` and `dec`. Add a FIXME indicating what's
coming here.


https://reviews.llvm.org/D37045

Files:
  lib/Target/X86/X86ISelDAGToDAG.cpp

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