[PATCH] D149954: [RegisterCoalescer] Fix problem with IMPLICIT_DEF live-in to an invoke

[Jay Foad via Phabricator via llvm-commits]

foad created this revision.
foad added reviewers: craig.topper, RKSimon, fhahn, qcolombet, arsenm, skatkov, Pierre-vh, kparzysz, stoklund, jyknight.
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Give up on erasing an IMPLICIT_DEF if it might be live-in to a call
instruction in a basic block with EH pad successors. This fixes a
liveness bug that will be diagnosed by MachineVerifer when D149947 <https://reviews.llvm.org/D149947>
lands.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D149954

Files:
  llvm/lib/CodeGen/RegisterCoalescer.cpp
  llvm/test/CodeGen/X86/2012-01-10-UndefExceptionEdge.ll

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