[all-commits] [llvm/llvm-project] 713702: [CGData] Make an option to skip reading Names into...

[Zhaoxuan Jiang via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 713702109a02cb340224cc7c086dcf0f371db45b
      https://github.com/llvm/llvm-project/commit/713702109a02cb340224cc7c086dcf0f371db45b
  Author: Zhaoxuan Jiang <jiangzhaoxuan94 at gmail.com>
  Date:   2025-06-10 (Tue, 10 Jun 2025)

  Changed paths:
    A llvm/include/llvm/CGData/CGDataPatchItem.h
    M llvm/include/llvm/CGData/CodeGenData.h
    M llvm/include/llvm/CGData/CodeGenData.inc
    M llvm/include/llvm/CGData/CodeGenDataWriter.h
    M llvm/include/llvm/CGData/StableFunctionMapRecord.h
    M llvm/lib/CGData/CodeGenData.cpp
    M llvm/lib/CGData/CodeGenDataReader.cpp
    M llvm/lib/CGData/CodeGenDataWriter.cpp
    M llvm/lib/CGData/StableFunctionMapRecord.cpp
    M llvm/lib/CodeGen/GlobalMergeFunctions.cpp
    M llvm/test/tools/llvm-cgdata/empty.test
    M llvm/test/tools/llvm-cgdata/error.test
    M llvm/test/tools/llvm-cgdata/merge-combined-funcmap-hashtree.test
    M llvm/test/tools/llvm-cgdata/merge-funcmap-archive.test
    M llvm/test/tools/llvm-cgdata/merge-funcmap-concat.test
    M llvm/test/tools/llvm-cgdata/merge-funcmap-double.test
    M llvm/test/tools/llvm-cgdata/merge-funcmap-single.test
    M llvm/unittests/CGData/StableFunctionMapRecordTest.cpp

  Log Message:
  -----------
  [CGData] Make an option to skip reading Names into StableFunctionMap (#142095)

Names are used for debugging purpose and have no impact on codegen. For
a non-trivial project, reading them consumes a lot of memory and slows
down the compilation significantly. This patch adds a field in the
indexed CGData to remember the total size of Names, and creates a
command-line option to skip reading Names by advancing the pointer when
deserializing the indexed CGData.



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