[all-commits] [llvm/llvm-project] 793853: Compute GUIDs once and store in metadata (#184065)

[Owen Rodley via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 7938535a54b51a4ca84821b7766d68049c9aa895
      https://github.com/llvm/llvm-project/commit/7938535a54b51a4ca84821b7766d68049c9aa895
  Author: Owen Rodley <orodley at google.com>
  Date:   2026-05-27 (Wed, 27 May 2026)

  Changed paths:
    M clang/lib/CodeGen/CGCUDANV.cpp
    M clang/test/CodeGen/cfi-icall-trap-recover-runtime.c
    M clang/test/CodeGen/lto-newpm-pipeline.c
    M clang/test/CodeGenCXX/cfi-vcall-trap-recover-runtime.cpp
    M lld/test/ELF/lto/devirt_vcall_vis_export_dynamic.ll
    M lld/test/ELF/lto/devirt_vcall_vis_public.ll
    M lld/test/ELF/lto/devirt_vcall_vis_shared_def.ll
    M llvm/include/llvm/Analysis/CtxProfAnalysis.h
    M llvm/include/llvm/Bitcode/BitcodeReader.h
    M llvm/include/llvm/Bitcode/LLVMBitCodes.h
    M llvm/include/llvm/IR/FixedMetadataKinds.def
    M llvm/include/llvm/IR/GlobalValue.h
    M llvm/include/llvm/IR/Module.h
    M llvm/include/llvm/IR/ModuleSummaryIndex.h
    M llvm/include/llvm/LTO/LTO.h
    A llvm/include/llvm/Transforms/Utils/AssignGUID.h
    M llvm/lib/Analysis/CtxProfAnalysis.cpp
    M llvm/lib/AsmParser/LLParser.cpp
    M llvm/lib/Bitcode/Reader/BitcodeAnalyzer.cpp
    M llvm/lib/Bitcode/Reader/BitcodeReader.cpp
    M llvm/lib/Bitcode/Writer/BitcodeWriter.cpp
    M llvm/lib/IR/Globals.cpp
    M llvm/lib/LTO/LTO.cpp
    M llvm/lib/LTO/LTOBackend.cpp
    M llvm/lib/Passes/PassBuilder.cpp
    M llvm/lib/Passes/PassBuilderPipelines.cpp
    M llvm/lib/Transforms/IPO/FunctionImport.cpp
    M llvm/lib/Transforms/IPO/ThinLTOBitcodeWriter.cpp
    M llvm/lib/Transforms/IPO/WholeProgramDevirt.cpp
    M llvm/lib/Transforms/Instrumentation/PGOCtxProfFlattening.cpp
    M llvm/lib/Transforms/Instrumentation/PGOCtxProfLowering.cpp
    M llvm/lib/Transforms/Scalar/JumpTableToSwitch.cpp
    A llvm/lib/Transforms/Utils/AssignGUID.cpp
    M llvm/lib/Transforms/Utils/CMakeLists.txt
    M llvm/lib/Transforms/Utils/CallPromotionUtils.cpp
    M llvm/lib/Transforms/Utils/CloneModule.cpp
    M llvm/lib/Transforms/Utils/FunctionImportUtils.cpp
    M llvm/lib/Transforms/Utils/InlineFunction.cpp
    M llvm/test/Assembler/index-value-order.ll
    M llvm/test/Bitcode/thinlto-alias.ll
    M llvm/test/Bitcode/thinlto-function-summary-callgraph-partial-sample-profile-summary.ll
    M llvm/test/Bitcode/thinlto-function-summary-callgraph-pgo.ll
    M llvm/test/Bitcode/thinlto-function-summary-callgraph-profile-summary.ll
    M llvm/test/Bitcode/thinlto-function-summary-callgraph-sample-profile-summary.ll
    M llvm/test/Bitcode/thinlto-function-summary-callgraph.ll
    M llvm/test/Bitcode/thinlto-function-summary-refgraph.ll
    M llvm/test/Bitcode/thinlto-function-summary.ll
    M llvm/test/CodeGen/X86/fat-lto-section.ll
    M llvm/test/LTO/Resolution/X86/not-prevailing-alias.ll
    M llvm/test/LTO/Resolution/X86/not-prevailing-weak-aliasee.ll
    M llvm/test/Linker/funcimport2.ll
    M llvm/test/Other/new-pm-O0-defaults.ll
    M llvm/test/Other/new-pm-defaults.ll
    M llvm/test/Other/new-pm-thinlto-prelink-defaults.ll
    M llvm/test/Other/new-pm-thinlto-prelink-pgo-defaults.ll
    M llvm/test/Other/new-pm-thinlto-prelink-samplepgo-defaults.ll
    M llvm/test/ThinLTO/AArch64/aarch64_inline.ll
    M llvm/test/ThinLTO/X86/Inputs/cache-typeid-resolutions1.ll
    M llvm/test/ThinLTO/X86/Inputs/cache-typeid-resolutions2.ll
    M llvm/test/ThinLTO/X86/Inputs/cache-typeid-resolutions3.ll
    M llvm/test/ThinLTO/X86/ctor-dtor-alias.ll
    M llvm/test/ThinLTO/X86/ctor-dtor-alias2.ll
    M llvm/test/ThinLTO/X86/deadstrip.ll
    M llvm/test/ThinLTO/X86/devirt_function_alias.ll
    M llvm/test/ThinLTO/X86/devirt_function_alias2.ll
    M llvm/test/ThinLTO/X86/devirt_pure_virtual_base.ll
    M llvm/test/ThinLTO/X86/devirt_vcall_vis_public.ll
    M llvm/test/ThinLTO/X86/distributed_import.ll
    M llvm/test/ThinLTO/X86/funcattrs-prop-exported-internal.ll
    M llvm/test/ThinLTO/X86/funcattrs-prop-unknown.ll
    M llvm/test/ThinLTO/X86/funcattrs-prop-weak.ll
    M llvm/test/ThinLTO/X86/globals-import.ll
    M llvm/test/ThinLTO/X86/hidden-escaped-symbols-alt.ll
    M llvm/test/ThinLTO/X86/hidden-escaped-symbols.ll
    M llvm/test/ThinLTO/X86/import-ro-constant.ll
    M llvm/test/ThinLTO/X86/index-const-prop-alias.ll
    M llvm/test/ThinLTO/X86/index-const-prop.ll
    M llvm/test/ThinLTO/X86/linkonce_resolution_comdat.ll
    M llvm/test/ThinLTO/X86/memprof-dups.ll
    M llvm/test/ThinLTO/X86/memprof_callee_type_mismatch.ll
    M llvm/test/ThinLTO/X86/memprof_imported_internal.ll
    M llvm/test/ThinLTO/X86/memprof_imported_internal2.ll
    M llvm/test/ThinLTO/X86/prevailing_weak_globals_import.ll
    M llvm/test/ThinLTO/X86/visibility-elf.ll
    M llvm/test/ThinLTO/X86/visibility-macho.ll
    M llvm/test/ThinLTO/X86/weak_resolution.ll
    M llvm/test/ThinLTO/X86/windows-vftable.ll
    M llvm/test/ThinLTO/X86/writeonly.ll
    A llvm/test/Transforms/AssignGUID/assign_guid.ll
    M llvm/test/Transforms/EmbedBitcode/embed-wpd.ll
    M llvm/test/Transforms/EmbedBitcode/embed.ll
    M llvm/test/Transforms/FunctionImport/funcimport-debug-retained-nodes.ll
    M llvm/test/Transforms/FunctionImport/funcimport.ll
    M llvm/test/Transforms/LowerTypeTests/cfi-icall-alias.ll
    M llvm/test/Transforms/PGOProfile/thinlto_indirect_call_promotion.ll
    M llvm/test/Transforms/PhaseOrdering/speculative-devirt-then-inliner.ll
    M llvm/test/Transforms/SampleProfile/ctxsplit.ll
    M llvm/test/Transforms/ThinLTOBitcodeWriter/split-internal-typeid.ll
    M llvm/test/Transforms/ThinLTOBitcodeWriter/split-internal1.ll
    M llvm/test/Transforms/ThinLTOBitcodeWriter/split-internal2.ll
    M llvm/test/Transforms/ThinLTOBitcodeWriter/split-vfunc-internal.ll
    M llvm/test/Transforms/ThinLTOBitcodeWriter/split-vfunc.ll
    M llvm/test/Transforms/ThinLTOBitcodeWriter/split.ll
    M llvm/test/Transforms/ThinLTOBitcodeWriter/unsplittable.ll
    M llvm/test/Transforms/WholeProgramDevirt/branch-funnel-profile.ll
    M llvm/test/Transforms/WholeProgramDevirt/export-single-impl.ll
    M llvm/test/Transforms/WholeProgramDevirt/export-vcp.ll
    M llvm/test/tools/gold/X86/devirt_vcall_vis_export_dynamic.ll
    M llvm/test/tools/gold/X86/devirt_vcall_vis_public.ll
    M llvm/test/tools/gold/X86/devirt_vcall_vis_shared_def.ll
    M llvm/test/tools/gold/X86/thinlto_weak_library.ll
    M llvm/test/tools/gold/X86/thinlto_weak_resolution.ll
    M llvm/test/tools/gold/X86/v1.16/devirt_vcall_vis_export_dynamic.ll
    M llvm/tools/llvm-link/llvm-link.cpp
    M llvm/tools/opt/NewPMDriver.cpp
    M llvm/tools/opt/optdriver.cpp

  Log Message:
  -----------
  Compute GUIDs once and store in metadata (#184065)

This allows us to keep GUIDs consistent across compilation phases which
may change the name or linkage type.

See https://discourse.llvm.org/t/rfc-keep-globalvalue-guids-stable/84801

This is a large change since the addition of metadata breaks many tests.
The test changes are mostly just trivial changes to checks to get them
passing.



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