Add AST/Sema support for __builtin_types_compatible_p (a GNU extension).
Todo...still need to call the action from the parser...


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@40693 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/Sema/SemaExpr.cpp b/Sema/SemaExpr.cpp
index 1570f4a..9ef2e67 100644
--- a/Sema/SemaExpr.cpp
+++ b/Sema/SemaExpr.cpp
@@ -1565,3 +1565,15 @@
   
   return new StmtExpr(Compound, Ty, LPLoc, RPLoc);
 }
+
+Sema::ExprResult Sema::ParseTypesCompatibleExpr(SourceLocation LPLoc, 
+                                                TypeTy *arg1, TypeTy *arg2,
+                                                SourceLocation RPLoc) {
+  QualType argT1 = QualType::getFromOpaquePtr(arg1);
+  QualType argT2 = QualType::getFromOpaquePtr(arg2);
+  
+  assert((!argT1.isNull() && !argT2.isNull()) && "Missing type argument(s)");
+  
+  return new TypesCompatibleExpr(Context.IntTy, LPLoc, argT1, argT2, RPLoc);
+}
+