[all-commits] [llvm/llvm-project] 626276: [ThinLTO][Bitcode] Generate import type in bitcode...

[Mingming Liu via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 6262763341fcd71a2b0708cf7485f9abd1d26ba8
      https://github.com/llvm/llvm-project/commit/6262763341fcd71a2b0708cf7485f9abd1d26ba8
  Author: Mingming Liu <mingmingl at google.com>
  Date:   2024-05-22 (Wed, 22 May 2024)

  Changed paths:
    M llvm/include/llvm/Bitcode/BitcodeWriter.h
    M llvm/include/llvm/LTO/legacy/ThinLTOCodeGenerator.h
    M llvm/include/llvm/Transforms/IPO/FunctionImport.h
    M llvm/lib/Bitcode/Writer/BitcodeWriter.cpp
    M llvm/lib/LTO/LTO.cpp
    M llvm/lib/LTO/ThinLTOCodeGenerator.cpp
    M llvm/lib/Transforms/IPO/FunctionImport.cpp
    M llvm/test/ThinLTO/X86/import_callee_declaration.ll
    M llvm/tools/llvm-lto/llvm-lto.cpp

  Log Message:
  -----------
  [ThinLTO][Bitcode] Generate import type in bitcode (#87600)

For distributed ThinLTO, the LTO indexing step generates combined
summary for each module, and postlink pipeline reads the combined
summary which stores the information for link-time optimization.

This patch populates the 'import type' of a summary in bitcode, and
updates bitcode reader to parse the bit correctly.



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