[LLVMbugs] [Bug 15875] New: [-cxx-abi microsoft] Implement standard member pointers

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=15875

            Bug ID: 15875
           Summary: [-cxx-abi microsoft] Implement standard member
                    pointers
           Product: clang
           Version: trunk
          Hardware: PC
                OS: Windows XP
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: C++
          Assignee: unassignedclangbugs at nondot.org
          Reporter: reid.kleckner at gmail.com
                CC: dgregor at apple.com, llvmbugs at cs.uiuc.edu
    Classification: Unclassified

This issue covers finishing up all the member pointer related issues in the
MSVC C++ ABI.

Things that are done:
- null memptr emission
- null testing
- memptr comparison
- data memptr emission

Things TODO that I'm aware of:
- func memptr emission
- virtual func memptr emission (requires vcall thunks)
- memptr conversion
- constant memptr emission, which requires applying a conversion at compile
time to make an llvm::Constant.
- memptr conversion through a virtually derived class (http://llvm.org/PR15713)

This is separate from http://llvm.org/PR15713, which is about implementing
conversions through virtual bases.  I may hit that as I work through these
issues, but I consider it a nice to have.

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