[PATCH] D49220: [x86] Teach the EFLAGS copy lowering to handle much more complex control flow patterns including forks, merges, and even cyles.

[Craig Topper via Phabricator via llvm-commits]

craig.topper accepted this revision.
craig.topper added a comment.
This revision is now accepted and ready to land.

LGTM



================
Comment at: llvm/test/CodeGen/X86/flags-copy-lowering.mir:917
+    ; Outer loop latch. Note that we cannot have EFLAGS live-in here as that
+    ; Immediately require PHIs.
+    CMP64rr %0, %1, implicit-def $eflags
----------------
Immediately shouldn't be capitalized. 


Repository:
  rL LLVM

https://reviews.llvm.org/D49220