[PATCH] D43198: [X86] Fix Topological NodeId Ordering violation in Load-Op-Store fusion.

[Nirav Dave via Phabricator via llvm-commits]

niravd created this revision.
niravd added reviewers: craig.topper, bogner.
Herald added a subscriber: hiraditya.

Load-op-Store fusion has an output edge from a non-root node (i.e. the
Op). Users of this value may have a Id smaller than the Store
violating the topological node id which we rely on. Invalidate the Ids
of such nodes.

Fixes PR36212.


Repository:
  rL LLVM

https://reviews.llvm.org/D43198

Files:
  llvm/lib/Target/X86/X86ISelDAGToDAG.cpp
  llvm/test/CodeGen/X86/pr36212.ll

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