[PATCH] D46048: [branchfolding] When hoisting common code, remove kill flags from uses

[Karl-Johan Karlsson via Phabricator via llvm-commits]

Ka-Ka created this revision.

Remove kill flags from uses if the killed registers are needed below the
insertion point. This should always be done, regardless of if registers
exist in the ActiveDefsSet or not.

This is a refinement of the old fix in r148043


Repository:
  rL LLVM

https://reviews.llvm.org/D46048

Files:
  lib/CodeGen/BranchFolding.cpp
  test/CodeGen/SystemZ/branch-folder-hoist.mir

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