[all-commits] [llvm/llvm-project] c7317d: [CIR][MLIR-LLVM] Add 'thread local mode/model' att...

[Erich Keane via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: c7317d79aacf76b5eb2dc65010e574a5269838ef
      https://github.com/llvm/llvm-project/commit/c7317d79aacf76b5eb2dc65010e574a5269838ef
  Author: Erich Keane <ekeane at nvidia.com>
  Date:   2026-08-06 (Thu, 06 Aug 2026)

  Changed paths:
    M clang/include/clang/CIR/Dialect/IR/CIROps.td
    M clang/lib/CIR/CodeGen/CIRGenModule.cpp
    M clang/lib/CIR/Lowering/DirectToLLVM/LowerToLLVM.cpp
    A clang/test/CIR/CodeGen/tls-model.cpp
    M flang/lib/Optimizer/CodeGen/CodeGen.cpp
    M mlir/include/mlir/Dialect/LLVMIR/LLVMEnums.td
    M mlir/include/mlir/Dialect/LLVMIR/LLVMOps.td
    M mlir/lib/Dialect/LLVMIR/IR/LLVMDialect.cpp
    M mlir/lib/Target/LLVMIR/ModuleImport.cpp
    M mlir/lib/Target/LLVMIR/ModuleTranslation.cpp
    M mlir/test/Dialect/LLVMIR/alias.mlir
    M mlir/test/Dialect/LLVMIR/global.mlir
    M mlir/test/Dialect/LLVMIR/invalid.mlir
    M mlir/test/Dialect/LLVMIR/roundtrip.mlir
    M mlir/test/Target/LLVMIR/Import/global-variables.ll
    M mlir/test/Target/LLVMIR/llvmir.mlir

  Log Message:
  -----------
  [CIR][MLIR-LLVM] Add 'thread local mode/model' attribute support (#214337)

The main purpose of this patch is to implement the 'tls_model' attribute
for ClangIR. However, this required updating the LLVM-IR dialect to ALSO
support this, not just as a bool. This patch threads it into both sides.

CIR tries to refer to it as "TLS_Model" to match the C/C++ attribute
closely, the LLVM Dialect refers to it as ThreadLocalMode to reflect
better what LLVM does.

Left as still 'not done' (in CIR only!) is the lowering of the 'other'
kinds of thread-local settings, which are intended to do various levels
of locking/initialization. Those are left for a future implementation
effort. The C++ test itself is taken directly from classic codegen.



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