[PATCH] D66360: Expose constructing a virtual method dispatch through the include/clang/CodeGen APIs.

[Parker Schuh via Phabricator via cfe-commits]

pschuh created this revision.
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In swift, we want to be able to call c++ virtual methods by looking up in the virtual table. There appears to exist no way currently, via the standard APIs, to take a CXXMethodDecl and a llvm::Value representing a this-ptr and construct the llvm instructions necessary to extract the method from the virtual table as well as adjust the this-ptr.

For reference, this is used in https://github.com/apple/swift/pull/26658.


Repository:
  rC Clang

https://reviews.llvm.org/D66360

Files:
  include/clang/CodeGen/CodeGenABITypes.h
  include/clang/CodeGen/SwiftCallingConv.h
  lib/CodeGen/CodeGenABITypes.cpp
  lib/CodeGen/SwiftCallingConv.cpp

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