[all-commits] [llvm/llvm-project] adda59: [MLIR] Add index bitwidth to the DataLayout (#85927)

[Tobias Gysi via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: adda597388dc148ac235e755b3e8bbd0a12a3e15
      https://github.com/llvm/llvm-project/commit/adda597388dc148ac235e755b3e8bbd0a12a3e15
  Author: Tobias Gysi <tobias.gysi at nextsilicon.com>
  Date:   2024-03-21 (Thu, 21 Mar 2024)

  Changed paths:
    M mlir/docs/DataLayout.md
    M mlir/include/mlir/Dialect/LLVMIR/LLVMTypes.td
    M mlir/include/mlir/Interfaces/DataLayoutInterfaces.h
    M mlir/include/mlir/Interfaces/DataLayoutInterfaces.td
    M mlir/lib/Dialect/LLVMIR/IR/LLVMTypes.cpp
    M mlir/lib/Interfaces/DataLayoutInterfaces.cpp
    M mlir/lib/Target/LLVMIR/ModuleTranslation.cpp
    M mlir/test/Dialect/LLVMIR/layout.mlir
    M mlir/test/Interfaces/DataLayoutInterfaces/module.mlir
    M mlir/test/Interfaces/DataLayoutInterfaces/query.mlir
    M mlir/test/Interfaces/DataLayoutInterfaces/types.mlir
    M mlir/test/Target/LLVMIR/data-layout.mlir
    M mlir/test/lib/Dialect/DLTI/TestDataLayoutQuery.cpp
    M mlir/test/lib/Dialect/Test/TestTypeDefs.td
    M mlir/test/lib/Dialect/Test/TestTypes.cpp
    M mlir/unittests/Interfaces/DataLayoutInterfacesTest.cpp

  Log Message:
  -----------
  [MLIR] Add index bitwidth to the DataLayout (#85927)

When importing from LLVM IR the data layout of all pointer types
contains an index bitwidth that should be used for index computations.
This revision adds a getter to the DataLayout that provides access to
the already stored bitwidth. The function returns an optional since only
pointer-like types have an index bitwidth. Querying the bitwidth of a
non-pointer type returns std::nullopt.

The new function works for the built-in Index type and, using a type
interface, for the LLVMPointerType.



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