[PATCH] D51919: [CallSiteSplitting] Add debug location to created PHI nodes.

[Florian Hahn via Phabricator via llvm-commits]

fhahn created this revision.
fhahn added reviewers: junbuml, gbedwell, vsk.
fhahn added a project: debug-info.

There are 2 cases when we create PHI nodes:

- For the result of the call that was duplicated in the split blocks. Those PHI nodes should have the debug location of the call.
- For values produced before the call. Those instructions need to be duplicated in the split blocks and the PHI nodes should have the debug locations of those instructions.

Fixes PR37962.


https://reviews.llvm.org/D51919

Files:
  lib/Transforms/Scalar/CallSiteSplitting.cpp
  test/Transforms/CallSiteSplitting/callsite-split-preserve-debug.ll

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