[PATCH] D131618: [clang][llvm][lld] FatLTO Prototype

[Paul Kirth via Phabricator via cfe-commits]

paulkirth updated this revision to Diff 501341.
paulkirth added a comment.

Allow EmbedBitcodePass to emit sections for Thin + Full LTO

- Improve options handling when FatLTO is enabled, so LTO related flags are not dropped in CC1
- Misc code cleanups.

I still view this as very much a WIP, but the prototype now can encode `.llvm.lto` sections with ThinLTO summaries, and seems to work better in terms of managing an optimizatipon pipeline.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D131618/new/

https://reviews.llvm.org/D131618

Files:
  clang/include/clang/Basic/CodeGenOptions.def
  clang/include/clang/Driver/Options.td
  clang/lib/CodeGen/BackendUtil.cpp
  clang/lib/Driver/Driver.cpp
  clang/lib/Driver/ToolChains/Clang.cpp
  clang/test/CodeGen/embed-lto-fatlto.c
  clang/test/Driver/clang_f_opts.c
  clang/test/Driver/fatlto-objects.c
  lld/ELF/Config.h
  lld/ELF/Driver.cpp
  lld/ELF/Options.td
  lld/test/ELF/fatlto/Inputs/a-LTO.ll
  lld/test/ELF/fatlto/Inputs/a-fatLTO.yaml
  lld/test/ELF/fatlto/Inputs/a.c
  lld/test/ELF/fatlto/Inputs/a.h
  lld/test/ELF/fatlto/Inputs/a.yaml
  lld/test/ELF/fatlto/Inputs/main-LTO.ll
  lld/test/ELF/fatlto/Inputs/main-fatLTO.yaml
  lld/test/ELF/fatlto/Inputs/main.c
  lld/test/ELF/fatlto/Inputs/main.yaml
  lld/test/ELF/fatlto/fatlto.test
  llvm/include/llvm/Bitcode/EmbedBitcodePass.h
  llvm/include/llvm/Passes/PassBuilder.h
  llvm/lib/Bitcode/Writer/CMakeLists.txt
  llvm/lib/Bitcode/Writer/EmbedBitcodePass.cpp
  llvm/lib/Object/ObjectFile.cpp
  llvm/lib/Passes/PassBuilder.cpp
  llvm/lib/Passes/PassBuilderPipelines.cpp
  llvm/lib/Passes/PassRegistry.def
  llvm/test/Bitcode/embed-multiple.ll
  llvm/test/Bitcode/embed-unsupported-object-format.ll
  llvm/test/Bitcode/embed.ll

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