[PATCH] D116405: [IR] Add DebugEntryValuesCallSite pass

[Milica Lazarevic via Phabricator via llvm-commits]

milica-lazarevic created this revision.
milica-lazarevic added reviewers: Orlando, jmorse, djtodoro, aprantl.
Herald added subscribers: ormris, wenlei, steven_wu, hiraditya.
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The purpose of this IR pass is to describe argument values on caller site. Pass has been added to the default<O2 <https://reviews.llvm.org/owners/package/2/>> pass pipeline, right before DeadArgumentEliminationPass. It attaches params field to DILocation of call instructions, which represents an array of DICallSiteParam elements. Information about call-site-value is carried through the pipeline, so in the phase of DWARF emitting, we can try to interpret those values as DWARF tag DW_TAG_call_site_parameter. For DWARF emission, it is necessary to have CallSiteInfo support by the target. For now, constant arguments passing is supported.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D116405

Files:
  llvm/include/llvm/Transforms/Utils/DebugEntryValues.h
  llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
  llvm/lib/Passes/PassBuilderPipelines.cpp
  llvm/lib/Passes/PassRegistry.def
  llvm/lib/Transforms/Utils/DebugEntryValues.cpp
  llvm/test/Other/new-pm-defaults.ll
  llvm/test/Other/new-pm-thinlto-defaults.ll
  llvm/test/Other/new-pm-thinlto-postlink-pgo-defaults.ll
  llvm/test/Other/new-pm-thinlto-postlink-samplepgo-defaults.ll
  llvm/test/Other/new-pm-thinlto-prelink-pgo-defaults.ll
  llvm/test/Other/new-pm-thinlto-prelink-samplepgo-defaults.ll
  llvm/test/Transforms/DebugEntryValues/diloc-params.ll

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