[PATCH] D20739: Better fix for PR27903.

[Than McIntosh via llvm-commits]

thanm created this revision.
thanm added reviewers: wmi, tejohnson, qcolombet, gbiv.
thanm added a subscriber: llvm-commits.

Re-enable lifetime-start-on-first-use for stack coloring,
but explicitly disable it for slots with more than one start
lifetime marker.

Bug: 27903

http://reviews.llvm.org/D20739

Files:
  lib/CodeGen/StackColoring.cpp
  test/CodeGen/X86/StackColoring.ll

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