Add Microsoft mangling for _Float16

Enables _Float16 on Windows by creating a mangling mechanism in MicrosoftMangle. It accomplishes this by mangling as a structure type of __clang::_Float16, similar to how Complex works. Patch By: mibintc Differential Revision: https://reviews.llvm.org/D45738 llvm-svn: 330225
llvm · Apr 17, 2018 · 5da1e69 · 5da1e69
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diff --git a/clang/lib/AST/MicrosoftMangle.cpp b/clang/lib/AST/MicrosoftMangle.cpp
@@ -1919,6 +1919,9 @@ void MicrosoftCXXNameMangler::mangleType(const BuiltinType *T, Qualifiers,
     break;
 
   case BuiltinType::Float16:
+    mangleArtificalTagType(TTK_Struct, "_Float16", {"__clang"});
+    break;
+
   case BuiltinType::Float128:
   case BuiltinType::Half: {
     DiagnosticsEngine &Diags = Context.getDiags();

diff --git a/clang/test/CodeGenCXX/mangle-ms.cpp b/clang/test/CodeGenCXX/mangle-ms.cpp
@@ -466,6 +466,10 @@ namespace Complex {
 // CHECK-DAG: define dso_local void @"?f@Complex@@YAXU?$_Complex@H@__clang@@@Z"(
 void f(_Complex int) {}
 }
+namespace Float16 {
+// CHECK-DAG: define dso_local void @"?f@Float16@@YAXU_Float16@__clang@@@Z"(
+void f(_Float16) {}
+}
 
 namespace PR26029 {
 template <class>