[PATCH] D139883: [llvm][CallBrPrepare] add llvm.callbr.landingpad intrinsic

[Eli Friedman via Phabricator via llvm-commits]

efriedma added a comment.

The use of an IR pass here is basically just a hack to work around the fact that SelectionDAG doesn't have a reasonable way to do this lowering inside SelectionDAG itself.  If we were using GlobalISel exclusively, we would probably just implement this as a GlobalISel pass instead of an IR pass.

If we need some additional infrastructure to make the IR pass work reliably, we can look at that, but implementing an IR instruction that only exists for a couple passes inside codegen seems like overkill.


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D139883/new/

https://reviews.llvm.org/D139883