Add support for calling C++ member functions.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@68412 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/CGCXX.cpp b/lib/CodeGen/CGCXX.cpp
index f43130a..5fb26d0 100644
--- a/lib/CodeGen/CGCXX.cpp
+++ b/lib/CodeGen/CGCXX.cpp
@@ -17,6 +17,7 @@
#include "CodeGenModule.h"
#include "clang/AST/ASTContext.h"
#include "clang/AST/Decl.h"
+#include "clang/AST/DeclCXX.h"
#include "clang/AST/DeclObjC.h"
#include "llvm/ADT/StringExtras.h"
using namespace clang;
@@ -135,3 +136,43 @@
EmitBlock(EndBlock);
}
+RValue CodeGenFunction::EmitCXXMemberCallExpr(const CXXMemberCallExpr *CE) {
+ const MemberExpr *ME = cast<MemberExpr>(CE->getCallee());
+ const CXXMethodDecl *MD = cast<CXXMethodDecl>(ME->getMemberDecl());
+ assert(MD->isInstance() &&
+ "Trying to emit a member call expr on a static method!");
+
+ bool IsVariadic = MD->getType()->getAsFunctionProtoType()->isVariadic();
+ const llvm::Type *Ty =
+ CGM.getTypes().GetFunctionType(CGM.getTypes().getFunctionInfo(MD),
+ IsVariadic);
+
+ llvm::Constant *Callee = CGM.GetAddrOfFunction(MD, Ty);
+
+ llvm::Value *BaseValue = 0;
+
+ // There's a deref operator node added in Sema::BuildCallToMemberFunction
+ // that's giving the wrong type for -> call exprs so we just ignore them
+ // for now.
+ if (ME->isArrow())
+ return EmitUnsupportedRValue(CE, "C++ member call expr");
+ else {
+ LValue BaseLV = EmitLValue(ME->getBase());
+ BaseValue = BaseLV.getAddress();
+ }
+
+ CallArgList Args;
+
+ // Push the 'this' pointer.
+ Args.push_back(std::make_pair(RValue::get(BaseValue),
+ MD->getThisType(getContext())));
+
+ for (CallExpr::const_arg_iterator I = CE->arg_begin(), E = CE->arg_end();
+ I != E; ++I)
+ Args.push_back(std::make_pair(EmitAnyExprToTemp(*I), I->getType()));
+
+ QualType ResultType = MD->getType()->getAsFunctionType()->getResultType();
+ return EmitCall(CGM.getTypes().getFunctionInfo(ResultType, Args),
+ Callee, Args, MD);
+ return EmitUnsupportedRValue(CE, "C++ member call expr");
+}