Add some MS aliases for existing intrinsics

Reviewers: thakis, compnerd, majnemer, rsmith, rnk

Subscribers: cfe-commits

Differential Revision: https://reviews.llvm.org/D24330


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@281375 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 7 insertions, 0 deletions

diff --git a/include/clang/Basic/Builtins.h b/include/clang/Basic/Builtins.h
index 15e9a413fb..c89880de0a 100644
--- a/include/clang/Basic/Builtins.h
+++ b/include/clang/Basic/Builtins.h
@@ -139,6 +139,13 @@ public:
     return strchr(getRecord(ID).Attributes, 'f') != nullptr;
   }
 
+  // \brief Returns true if this builtin requires appropriate header in other
+  // compilers. In Clang it will work even without including it, but we can emit
+  // a warning about missing header.
+  bool isHeaderDependentFunction(unsigned ID) const {
+    return strchr(getRecord(ID).Attributes, 'h') != nullptr;
+  }
+
   /// \brief Determines whether this builtin is a predefined compiler-rt/libgcc
   /// function, such as "__clear_cache", where we know the signature a
   /// priori.