[PATCH] D131485: [AMDGPU] Fix prologue/epilogue markers in .debug_line table for trivial functions

[Venkata Ramanaiah Nalamothu via Phabricator via llvm-commits]

RamNalamothu created this revision.
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All the prologue instructions should have unknown source location
co-ordinates while the epilogue instructions should have source
location of last non-debug instruction after which epilogue
instructions are insrted.

This ensures the prologue/epilogue markers are generated correctly
in the line table.

Changes are brought in from the downstream CFI patches.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D131485

Files:
  llvm/lib/Target/AMDGPU/SIFrameLowering.cpp
  llvm/test/CodeGen/AMDGPU/prologue-epilogue-markers.ll

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