[all-commits] [llvm/llvm-project] 4e5306: [CIR] Add initial support for dynamic cast (#162337)

[Andy Kaylor via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 4e5306745a09b734000c200d02a54c853409a3b5
      https://github.com/llvm/llvm-project/commit/4e5306745a09b734000c200d02a54c853409a3b5
  Author: Andy Kaylor <akaylor at nvidia.com>
  Date:   2025-10-09 (Thu, 09 Oct 2025)

  Changed paths:
    M clang/include/clang/CIR/MissingFeatures.h
    M clang/lib/CIR/CodeGen/CIRGenBuilder.h
    M clang/lib/CIR/CodeGen/CIRGenCXXABI.h
    M clang/lib/CIR/CodeGen/CIRGenExpr.cpp
    M clang/lib/CIR/CodeGen/CIRGenExprCXX.cpp
    M clang/lib/CIR/CodeGen/CIRGenExprScalar.cpp
    M clang/lib/CIR/CodeGen/CIRGenFunction.h
    M clang/lib/CIR/CodeGen/CIRGenItaniumCXXABI.cpp
    M clang/lib/CIR/CodeGen/CIRGenModule.cpp
    M clang/lib/CIR/CodeGen/CIRGenModule.h
    M clang/lib/CIR/CodeGen/CIRGenVTables.cpp
    A clang/test/CIR/CodeGen/dynamic-cast.cpp

  Log Message:
  -----------
  [CIR] Add initial support for dynamic cast (#162337)

This adds support for dynamic cast handling and generating
`cir.dyn_cast` operations and `cir.dyn_cast_info` attributes.

This does not include support for lowering the dynamic cast to LLVM IR,
which will require changes to the LoweringPrepare pass that will be made
in a future change.

This also does not yet handle dynamic cast to void or exact dynamic
casts.



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