Merge commit 46673763f from llvm git (by Craig Topper):

Merge commit 46673763f from llvm git (by Craig Topper):

  [X86] Place new constant node in topological order in
  X86DAGToDAGISel::matchBitExtract

  Fixes PR47482

This should fix 'Assertion failed: (Op->getNodeId() != -1 && "Node has
already selected predecessor node"), function DoInstructionSelection,
file
/usr/src/contrib/llvm-project/llvm/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp,
line 1149' when compiling part of the project_painter project, while
targeting the bdver2 (or higher) CPU.

Reported by:	jkim
MFC after:	6 weeks
X-MFC-With:	r364284