[PATCH] D23488: ThinLTO: add early "dead-stripping" on the Index

[Teresa Johnson via Phabricator via llvm-commits]

tejohnson updated this revision to Diff 82304.
tejohnson added a comment.

Added flag to the summary to enable flagging llvm.* values as live,
and add those to the live worklist when doing index-based dead value
analysis.  With this change all SPEC cpu2006 C/C++ benchmarks pass.


https://reviews.llvm.org/D23488

Files:
  include/llvm/IR/ModuleSummaryIndex.h
  include/llvm/LTO/LTO.h
  include/llvm/Transforms/IPO/FunctionImport.h
  lib/Analysis/ModuleSummaryAnalysis.cpp
  lib/Bitcode/Reader/BitcodeReader.cpp
  lib/Bitcode/Writer/BitcodeWriter.cpp
  lib/LTO/LTO.cpp
  lib/LTO/ThinLTOCodeGenerator.cpp
  lib/Transforms/IPO/FunctionImport.cpp
  test/ThinLTO/X86/Inputs/deadstrip.ll
  test/ThinLTO/X86/deadstrip.ll

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