[all-commits] [llvm/llvm-project] dd33f5: [Flang][Driver] Added support for -funique-interna...

[Kaviya Rajendiran via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: dd33f57479c1d1d86649a1867b79be88ce04da73
      https://github.com/llvm/llvm-project/commit/dd33f57479c1d1d86649a1867b79be88ce04da73
  Author: Kaviya Rajendiran <67495422+kaviya2510 at users.noreply.github.com>
  Date:   2026-09-23 (Wed, 23 Sep 2026)

  Changed paths:
    M clang/include/clang/Options/Options.td
    M clang/lib/Driver/ToolChains/Flang.cpp
    M flang/include/flang/Frontend/CodeGenOptions.def
    M flang/include/flang/Lower/Bridge.h
    M flang/include/flang/Optimizer/Transforms/Passes.td
    M flang/include/flang/Tools/CrossToolHelpers.h
    M flang/lib/Frontend/CompilerInvocation.cpp
    M flang/lib/Lower/Bridge.cpp
    M flang/lib/Optimizer/Passes/Pipelines.cpp
    M flang/lib/Optimizer/Transforms/CompilerGeneratedNames.cpp
    M flang/lib/Optimizer/Transforms/FunctionAttr.cpp
    A flang/test/Driver/funique-internal-linkage-names.f90
    A flang/test/Lower/unique-internal-linkage-names.f90
    A flang/test/Transforms/function-attrs-unique-internal-linkage-names.fir
    M mlir/include/mlir/Dialect/LLVMIR/LLVMOps.td
    M mlir/lib/Target/LLVMIR/ModuleImport.cpp
    M mlir/lib/Target/LLVMIR/ModuleTranslation.cpp
    A mlir/test/Target/LLVMIR/Import/sample-profile-suffix-elision-policy.ll
    A mlir/test/Target/LLVMIR/sample-profile-suffix-elision-policy.mlir

  Log Message:
  -----------
  [Flang][Driver] Added support for -funique-internal-linkage-names option  (#216680)

The option `-funique-internal-linkage-names` appends an MD5 hash suffix
`(.__uniq.<hash>)` to internal procedure names and sets
`"sample-profile-suffix-elision-policy"="selected"` on those functions,
enabling the sample profiler to correctly match profiles to internal
procedures across compilation units.

Implementation:
- Added a unique hash suffix to internal procedure names when
`-funique-internal-linkage-names` is enabled. The suffix is derived from
the source file path and disambiguates identically named internal
procedures across different compilation units, which helps accurate
sample-based profiling.
- Added the function attribute
`"sample-profile-suffix-elision-policy"="selected"` on internal
procedures in LLVM IR. This attribute is used by the LLVM sample profile
loader to control suffix stripping during profile matching



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