Start the migration of more of the blocks code out of sight for most

people.  De-duplicates BLOCK_NEEDS_FREE and friends.

llvm-svn: 66035

clang/lib/CodeGen/CGBlocks.h

@@ -0,0 +1,54 @@
+//===-- CGBlocks.h - state for LLVM CodeGen for blocks ----------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This is the internal state used for llvm translation for block literals.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef CLANG_CODEGEN_CGBLOCKS_H
+#define CLANG_CODEGEN_CGBLOCKS_H
+
+namespace clang {
+
+namespace CodeGen {
+
+class BlockBase {
+public:
+    enum {
+        BLOCK_NEEDS_FREE =        (1 << 24),
+        BLOCK_HAS_COPY_DISPOSE =  (1 << 25),
+        BLOCK_HAS_CXX_OBJ =       (1 << 26),
+        BLOCK_IS_GC =             (1 << 27),
+        BLOCK_IS_GLOBAL =         (1 << 28),
+        BLOCK_HAS_DESCRIPTOR =    (1 << 29)
+    };
+};
+
+class BlockModule : public BlockBase {
+};
+
+class BlockFunction : public BlockBase {
+public:
+    enum {
+    BLOCK_FIELD_IS_OBJECT   =  3,  /* id, NSObject, __attribute__((NSObject)),
+                                      block, ... */
+    BLOCK_FIELD_IS_BLOCK    =  7,  /* a block variable */
+    BLOCK_FIELD_IS_BYREF    =  8,  /* the on stack structure holding the __block
+                                      variable */
+    BLOCK_FIELD_IS_WEAK     = 16,  /* declared __weak, only used in byref copy
+                                      helpers */
+    BLOCK_BYREF_CALLER      = 128  /* called from __block (byref) copy/dispose
+                                      support routines */
+  };
+};
+
+}  // end namespace CodeGen
+}  // end namespace clang
+
+#endif