[PATCH] D95858: [Statepoint] Handle 'undef' operand tied to def

[Serguei Katkov via Phabricator via llvm-commits]

skatkov created this revision.
skatkov added reviewers: reames, dantrushin.
Herald added subscribers: pengfei, jfb, hiraditya.
skatkov requested review of this revision.
Herald added a project: LLVM.

FixupStatepoints pass does not take into account the undef use
it  skips may have a tied def. So when defs are handled pass
considers that tied-use should be spilled and triggers an assert.

FixupStatepoints should skip undef def as well.


https://reviews.llvm.org/D95858

Files:
  llvm/lib/CodeGen/FixupStatepointCallerSaved.cpp
  llvm/test/CodeGen/X86/statepoint-fixup-undef-def.mir

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