This patch breaks up Wrap.h so that it does not have to include all of

the things, and renames it to CBindingWrapping.h.  I also moved 
CBindingWrapping.h into Support/.

This new file just contains the macros for defining different wrap/unwrap 
methods.

The calls to those macros, as well as any custom wrap/unwrap definitions 
(like for array of Values for example), are put into corresponding C++ 
headers.

Doing this required some #include surgery, since some .cpp files relied 
on the fact that including Wrap.h implicitly caused the inclusion of a 
bunch of other things.

This also now means that the C++ headers will include their corresponding 
C API headers; for example Value.h must include llvm-c/Core.h.  I think 
this is harmless, since the C API headers contain just external function 
declarations and some C types, so I don't believe there should be any 
nasty dependency issues here.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@180881 91177308-0d34-0410-b5e6-96231b3b80d8

include/llvm/IR/Value.h

@@ -16,7 +16,9 @@
 
 #include "llvm/IR/Use.h"
 #include "llvm/Support/Casting.h"
+#include "llvm/Support/CBindingWrapping.h"
 #include "llvm/Support/Compiler.h"
+#include "llvm-c/Core.h"
 
 namespace llvm {
 
@@ -406,6 +408,29 @@ public:
   enum { NumLowBitsAvailable = 2 };
 };
 
+// Create wrappers for C Binding types (see CBindingWrapping.h).
+DEFINE_ISA_CONVERSION_FUNCTIONS(Value, LLVMValueRef)
+
+/* Specialized opaque value conversions.
+ */ 
+inline Value **unwrap(LLVMValueRef *Vals) {
+  return reinterpret_cast<Value**>(Vals);
+}
+
+template<typename T>
+inline T **unwrap(LLVMValueRef *Vals, unsigned Length) {
+#ifdef DEBUG
+  for (LLVMValueRef *I = Vals, *E = Vals + Length; I != E; ++I)
+    cast<T>(*I);
+#endif
+  (void)Length;
+  return reinterpret_cast<T**>(Vals);
+}
+
+inline LLVMValueRef *wrap(const Value **Vals) {
+  return reinterpret_cast<LLVMValueRef*>(const_cast<Value**>(Vals));
+}
+
 } // End llvm namespace
 
 #endif