Don't emit K&R unprototyped function definitions as varargs.

 - <rdar://problem/6584606> clang/x86-64 - too many reg saves


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@65032 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 10 insertions, 1 deletions

diff --git a/lib/CodeGen/CodeGenModule.h b/lib/CodeGen/CodeGenModule.h
index b7d3aa9f38..3f1aeb80be 100644
--- a/lib/CodeGen/CodeGenModule.h
+++ b/lib/CodeGen/CodeGenModule.h
@@ -322,7 +322,16 @@ private:
   void EmitGlobal(const ValueDecl *D);
 
   void EmitGlobalDefinition(const ValueDecl *D);
-  llvm::GlobalValue *EmitForwardFunctionDefinition(const FunctionDecl *D);
+
+  /// EmitForwardFunctionDefinition - Create a new function for the
+  /// given decl and set attributes as appropriate.
+  ///
+  /// \arg Ty - If non-null the LLVM function type to use for the
+  /// decl; it is the callers responsibility to make sure this is
+  /// compatible with the correct type.
+  llvm::GlobalValue *EmitForwardFunctionDefinition(const FunctionDecl *D,
+                                                   const llvm::Type *Ty);
+
   void EmitGlobalFunctionDefinition(const FunctionDecl *D);
   void EmitGlobalVarDefinition(const VarDecl *D);
   void EmitObjCPropertyImplementations(const ObjCImplementationDecl *D);