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from e08b71132a1 [llvm] Address base discriminator overflow in X86Discrimina [...] new f1f1adc004a [ThinLTO] Compute synthetic function entry count

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Summary of changes: include/llvm/IR/ModuleSummaryIndex.h | 50 ++++++++++++-- include/llvm/IR/ModuleSummaryIndexYAML.h | 2 +- include/llvm/LTO/SummaryBasedOptimizations.h | 17 +++++ .../llvm/Transforms/Utils/FunctionImportUtils.h | 4 ++ lib/Analysis/ModuleSummaryAnalysis.cpp | 11 +-- lib/Analysis/SyntheticCountsUtils.cpp | 5 +- lib/AsmParser/LLParser.cpp | 4 +- lib/Bitcode/Reader/BitcodeReader.cpp | 26 ++++--- lib/Bitcode/Writer/BitcodeWriter.cpp | 11 ++- lib/LTO/CMakeLists.txt | 1 + lib/LTO/LTO.cpp | 5 ++ lib/LTO/SummaryBasedOptimizations.cpp | 80 ++++++++++++++++++++++ lib/LTO/ThinLTOCodeGenerator.cpp | 4 ++ lib/Transforms/IPO/SyntheticCountsPropagation.cpp | 2 +- lib/Transforms/Utils/FunctionImportUtils.cpp | 19 ++++- test/Bitcode/summary_version.ll | 2 +- test/Bitcode/thinlto-alias.ll | 2 +- .../thinlto-function-summary-callgraph-pgo.ll | 2 +- ...o-function-summary-callgraph-profile-summary.ll | 2 +- ...ion-summary-callgraph-sample-profile-summary.ll | 2 +- test/Bitcode/thinlto-function-summary-callgraph.ll | 2 +- test/Bitcode/thinlto-synthetic-count-flag.ll | 21 ++++++ test/ThinLTO/X86/Inputs/function_entry_count.ll | 9 +++ test/ThinLTO/X86/function_entry_count.ll | 44 ++++++++++++ 24 files changed, 293 insertions(+), 34 deletions(-) create mode 100644 include/llvm/LTO/SummaryBasedOptimizations.h create mode 100644 lib/LTO/SummaryBasedOptimizations.cpp create mode 100644 test/Bitcode/thinlto-synthetic-count-flag.ll create mode 100644 test/ThinLTO/X86/Inputs/function_entry_count.ll create mode 100644 test/ThinLTO/X86/function_entry_count.ll