[all-commits] [llvm/llvm-project] 1e8dad: [MLIR][LLVM] Support Recursive DITypes (#80251)

[Billy Zhu via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 1e8dad3bef64ada8b293e6c538b1f41ad9727cc0
      https://github.com/llvm/llvm-project/commit/1e8dad3bef64ada8b293e6c538b1f41ad9727cc0
  Author: Billy Zhu <billyzhu at modular.com>
  Date:   2024-03-15 (Fri, 15 Mar 2024)

  Changed paths:
    M mlir/include/mlir-c/Dialect/LLVM.h
    M mlir/include/mlir/Dialect/LLVMIR/CMakeLists.txt
    M mlir/include/mlir/Dialect/LLVMIR/LLVMAttrDefs.td
    M mlir/include/mlir/Dialect/LLVMIR/LLVMAttrs.h
    M mlir/include/mlir/Dialect/LLVMIR/LLVMInterfaces.td
    M mlir/lib/CAPI/Dialect/LLVM.cpp
    M mlir/lib/Dialect/LLVMIR/IR/LLVMAttrs.cpp
    M mlir/lib/Target/LLVMIR/DebugImporter.cpp
    M mlir/lib/Target/LLVMIR/DebugImporter.h
    M mlir/lib/Target/LLVMIR/DebugTranslation.cpp
    M mlir/lib/Target/LLVMIR/DebugTranslation.h
    M mlir/test/CAPI/llvm.c
    M mlir/test/Target/LLVMIR/Import/debug-info.ll
    M mlir/test/Target/LLVMIR/Import/import-failure.ll
    M mlir/test/Target/LLVMIR/llvmir-debug.mlir

  Log Message:
  -----------
  [MLIR][LLVM] Support Recursive DITypes (#80251)

Following the discussion from [this
thread](https://discourse.llvm.org/t/handling-cyclic-dependencies-in-debug-info/67526/11),
this PR adds support for recursive DITypes.

This PR adds:
1. DIRecursiveTypeAttrInterface: An interface that DITypeAttrs can
implement to indicate that it supports recursion. See full description
in code.
2. Importer & exporter support (The only DITypeAttr that implements the
interface is DICompositeTypeAttr, so the exporter is only implemented
for composites too. There will be two methods that each llvm DI type
that supports mutation needs to implement since there's nothing
general).

---------

Co-authored-by: Tobias Gysi <tobias.gysi at nextsilicon.com>



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