Handle operator call expressions where the callee is a member function.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@72458 91177308-0d34-0410-b5e6-96231b3b80d8

3 files changed, 27 insertions, 0 deletions

diff --git a/lib/CodeGen/CGCXX.cpp b/lib/CodeGen/CGCXX.cpp
index 0257494977..94d69d846c 100644
--- a/lib/CodeGen/CGCXX.cpp
+++ b/lib/CodeGen/CGCXX.cpp
@@ -124,6 +124,25 @@ RValue CodeGenFunction::EmitCXXMemberCallExpr(const CXXMemberCallExpr *CE) {
                            CE->arg_begin(), CE->arg_end());
 }
 
+RValue 
+CodeGenFunction::EmitCXXOperatorMemberCallExpr(const CXXOperatorCallExpr *E,
+                                               const CXXMethodDecl *MD) {
+  assert(MD->isInstance() && 
+         "Trying to emit a member call expr on a static method!");
+  
+  
+  const FunctionProtoType *FPT = MD->getType()->getAsFunctionProtoType();
+  const llvm::Type *Ty = 
+  CGM.getTypes().GetFunctionType(CGM.getTypes().getFunctionInfo(MD), 
+                                 FPT->isVariadic());
+  llvm::Constant *Callee = CGM.GetAddrOfFunction(GlobalDecl(MD), Ty);
+  
+  llvm::Value *This = EmitLValue(E->getArg(0)).getAddress();
+  
+  return EmitCXXMemberCall(MD, Callee, This,
+                           E->arg_begin() + 1, E->arg_end());
+}
+
 llvm::Value *CodeGenFunction::LoadCXXThis() {
   assert(isa<CXXMethodDecl>(CurFuncDecl) && 
          "Must be in a C++ member function decl to load 'this'");
diff --git a/lib/CodeGen/CGExpr.cpp b/lib/CodeGen/CGExpr.cpp
index 45e19f139a..ff61d5ba1c 100644
--- a/lib/CodeGen/CGExpr.cpp
+++ b/lib/CodeGen/CGExpr.cpp
@@ -1136,6 +1136,11 @@ RValue CodeGenFunction::EmitCallExpr(const CallExpr *E) {
     }
   }
 
+  if (const CXXOperatorCallExpr *CE = dyn_cast<CXXOperatorCallExpr>(E)) {
+    if (const CXXMethodDecl *MD = dyn_cast_or_null<CXXMethodDecl>(TargetDecl))
+      return EmitCXXOperatorMemberCallExpr(CE, MD);
+  }
+      
   llvm::Value *Callee = EmitScalarExpr(E->getCallee());
   return EmitCall(Callee, E->getCallee()->getType(),
                   E->arg_begin(), E->arg_end(), TargetDecl);
diff --git a/lib/CodeGen/CodeGenFunction.h b/lib/CodeGen/CodeGenFunction.h
index 28c557c156..7d13071ece 100644
--- a/lib/CodeGen/CodeGenFunction.h
+++ b/lib/CodeGen/CodeGenFunction.h
@@ -686,6 +686,9 @@ public:
                            CallExpr::const_arg_iterator ArgEnd);
   RValue EmitCXXMemberCallExpr(const CXXMemberCallExpr *E);
 
+  RValue EmitCXXOperatorMemberCallExpr(const CXXOperatorCallExpr *E,
+                                       const CXXMethodDecl *MD);
+  
   RValue EmitBuiltinExpr(const FunctionDecl *FD, 
                          unsigned BuiltinID, const CallExpr *E);