Codegen support for nullptr from C++0x.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@81835 91177308-0d34-0410-b5e6-96231b3b80d8

2 files changed, 10 insertions, 0 deletions

diff --git a/lib/CodeGen/CGExprScalar.cpp b/lib/CodeGen/CGExprScalar.cpp
index aee5446434..7f9b66468b 100644
--- a/lib/CodeGen/CGExprScalar.cpp
+++ b/lib/CodeGen/CGExprScalar.cpp
@@ -308,6 +308,10 @@ public:
     return 0;
   }
 
+  Value *VisitCXXNullPtrLiteralExpr(const CXXNullPtrLiteralExpr *E) {
+    return llvm::Constant::getNullValue(ConvertType(E->getType()));
+  }
+    
   // Binary Operators.
   Value *EmitMul(const BinOpInfo &Ops) {
     if (CGF.getContext().getLangOptions().OverflowChecking
diff --git a/lib/CodeGen/CodeGenTypes.cpp b/lib/CodeGen/CodeGenTypes.cpp
index 94db836665..6826122ad9 100644
--- a/lib/CodeGen/CodeGenTypes.cpp
+++ b/lib/CodeGen/CodeGenTypes.cpp
@@ -229,6 +229,12 @@ const llvm::Type *CodeGenTypes::ConvertNewType(QualType T) {
       return getTypeForFormat(getLLVMContext(),
                               Context.getFloatTypeSemantics(T));
 
+    case BuiltinType::NullPtr: {
+      // Model std::nullptr_t as i8*
+      const llvm::Type *Ty = llvm::IntegerType::get(getLLVMContext(), 8);
+      return llvm::PointerType::getUnqual(Ty);
+    }
+        
     case BuiltinType::UInt128:
     case BuiltinType::Int128:
       return llvm::IntegerType::get(getLLVMContext(), 128);