[all-commits] [llvm/llvm-project] 12a789: [clang][Interp] BaseToDerived casts

[Timm Baeder via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 12a789710e2bafe9bb49adea5e634784b086eb6a
      https://github.com/llvm/llvm-project/commit/12a789710e2bafe9bb49adea5e634784b086eb6a
  Author: Timm Bäder <tbaeder at redhat.com>
  Date:   2023-09-05 (Tue, 05 Sep 2023)

  Changed paths:
    M clang/lib/AST/Interp/ByteCodeExprGen.cpp
    M clang/lib/AST/Interp/ByteCodeExprGen.h
    M clang/lib/AST/Interp/Interp.cpp
    M clang/lib/AST/Interp/Interp.h
    M clang/lib/AST/Interp/Opcodes.td
    M clang/lib/AST/Interp/Pointer.h
    M clang/test/AST/Interp/records.cpp

  Log Message:
  -----------
  [clang][Interp] BaseToDerived casts

We can implement these similarly to DerivedToBase casts. We just have to
walk the class hierarchy, sum the base offsets and subtract it from the
current base offset of the pointer.

Differential Revision: https://reviews.llvm.org/D149133