Fix the required args count for variadic blocks.

We were emitting calls to blocks as if all arguments were
required --- i.e. with signature (A,B,C,D,...) rather than
(A,B,...).  This patch fixes that and accounts for the
implicit block-context argument as a required argument.
In addition, this patch changes the function type under which
we call unprototyped functions on platforms like x86-64 that
guarantee compatibility of variadic functions with unprototyped
function types;  previously we would always call such functions
under the LLVM type T (...)*, but now we will call them under
the type T (A,B,C,D,...)*.  This last change should have no
material effect except for making the type conventions more
explicit;  it was a side-effect of the most convenient implementation.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@169588 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 4 insertions, 0 deletions

diff --git a/lib/CodeGen/CodeGenTypes.h b/lib/CodeGen/CodeGenTypes.h
index b3dda5096e..173c7ea2ba 100644
--- a/lib/CodeGen/CodeGenTypes.h
+++ b/lib/CodeGen/CodeGenTypes.h
@@ -58,6 +58,7 @@ namespace CodeGen {
 /// CodeGenTypes - This class organizes the cross-module state that is used
 /// while lowering AST types to LLVM types.
 class CodeGenTypes {
+public:
   // Some of this stuff should probably be left on the CGM.
   ASTContext &Context;
   const TargetInfo &Target;
@@ -68,6 +69,7 @@ class CodeGenTypes {
   const CodeGenOptions &CodeGenOpts;
   CodeGenModule &CGM;
 
+private:
   /// The opaque type map for Objective-C interfaces. All direct
   /// manipulation is done by the runtime interfaces, which are
   /// responsible for coercing to the appropriate type; these opaque
@@ -195,6 +197,8 @@ public:
                                                 const CallArgList &args,
                                                 FunctionType::ExtInfo info,
                                                 RequiredArgs required);
+  const CGFunctionInfo &arrangeBlockFunctionCall(const CallArgList &args,
+                                                 const FunctionType *type);
 
   const CGFunctionInfo &arrangeCXXMethodCall(const CallArgList &args,
                                              const FunctionProtoType *type,