[all-commits] [llvm/llvm-project] fa818d: [StatepointLowering] Handle UNDEF gc values.

[dantrushin via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: fa818ded24413c8b9722dd564b04d9ffc50743b5
      https://github.com/llvm/llvm-project/commit/fa818ded24413c8b9722dd564b04d9ffc50743b5
  Author: Denis Antrushin <dantrushin at gmail.com>
  Date:   2020-06-02 (Tue, 02 Jun 2020)

  Changed paths:
    M llvm/lib/CodeGen/SelectionDAG/StatepointLowering.cpp
    M llvm/test/CodeGen/X86/statepoint-uniqueing.ll

  Log Message:
  -----------
  [StatepointLowering] Handle UNDEF gc values.

Do not spill UNDEF GC values. Instead, replace corresponding
gc.relocate intrinsic with an (arbitrary, but recognizable) constant.

Reviewed By: reames
Differential Revision: https://reviews.llvm.org/D80714