add llvm ir bitcode definition file

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36337 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Bitcode/LLVMBitCodes.h

@@ -0,0 +1,87 @@
+//===- LLVMBitCodes.h - Enum values for the LLVM bitcode format -*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file was developed by Chris Lattner and is distributed under
+// the University of Illinois Open Source License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This header defines Bitcode enum values for LLVM IR bitcode files.
+//
+// The enum values defined in this file should be considered permanent.  If
+// new features are added, they should have values added at the end of the
+// respective lists.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_BITCODE_LLVMBITCODES_H
+#define LLVM_BITCODE_LLVMBITCODES_H
+
+#include "llvm/Bitcode/BitCodes.h"
+
+namespace llvm {
+namespace bitc {
+  // The only top-level block type defined is for a module.
+  enum BlockIDs {
+    // Blocks
+    MODULE_BLOCK_ID          = 0,
+  
+    // Module sub-block id's
+    TYPE_BLOCK_ID            = 1,
+    MODULEINFO_BLOCK_ID      = 2,
+    GLOBALCONSTANTS_BLOCK_ID = 3,
+    FUNCTION_BLOCK_ID        = 4,
+    TYPE_SYMTAB_BLOCK_ID     = 5,
+    GLOBAL_SYMTAB_BLOCK_ID   = 6
+  };
+  
+  
+  /// MODULE blocks have a number of optional fields and subblocks.
+  enum ModuleCodes {
+    MODULE_CODE_VERSION     = 1,    // VERSION:     [version#]
+    MODULE_CODE_TRIPLE      = 2,    // TRIPLE:      [strlen, strchr x N]
+    MODULE_CODE_DATALAYOUT  = 3,    // DATALAYOUT:  [strlen, strchr x N]
+    MODULE_CODE_ASM         = 4,    // ASM:         [strlen, strchr x N]
+    MODULE_CODE_SECTIONNAME = 5,    // SECTIONNAME: [strlen, strchr x N]
+    MODULE_CODE_DEPLIB      = 6,    // DEPLIB:      [strlen, strchr x N]
+
+    // GLOBALVAR: [type, isconst, initid, 
+    //             linkage, alignment, section, visibility, threadlocal]
+    MODULE_CODE_GLOBALVAR   = 7,
+
+    // FUNCTION:  [type, callingconv, isproto, linkage, alignment, section,
+    //             visibility]
+    MODULE_CODE_FUNCTION    = 8
+  };
+  
+  /// TYPE blocks have codes for each type primitive they use.
+  enum TypeCodes {
+    TYPE_CODE_NUMENTRY =  1,   // TYPE_CODE_NUMENTRY: [numentries]
+    TYPE_CODE_META     =  2,   // TYPE_CODE_META: [metacode]... - Future use
+    
+    // Type Codes
+    TYPE_CODE_VOID     =  3,   // VOID
+    TYPE_CODE_FLOAT    =  4,   // FLOAT
+    TYPE_CODE_DOUBLE   =  5,   // DOUBLE
+    TYPE_CODE_LABEL    =  6,   // LABEL
+    TYPE_CODE_OPAQUE   =  7,   // OPAQUE
+    TYPE_CODE_INTEGER  =  8,   // INTEGER: [width]
+    TYPE_CODE_POINTER  =  9,   // POINTER: [pointee type]
+    TYPE_CODE_FUNCTION = 10,   // FUNCTION: [vararg, retty, #pararms, paramty N]
+    TYPE_CODE_STRUCT   = 11,   // STRUCT: [ispacked, #elts, eltty x N]
+    TYPE_CODE_ARRAY    = 12,   // ARRAY: [numelts, eltty]
+    TYPE_CODE_VECTOR   = 13    // VECTOR: [numelts, eltty]
+    // Any other type code is assumed to be an unknown type.
+  };
+  
+  
+  // The type symbol table only has one code (TST_ENTRY_CODE).
+  enum TypeSymtabCodes {
+    TST_ENTRY_CODE = 1     // TST_ENTRY: [typeid, namelen, namechar x N]
+  };
+  
+} // End bitc namespace
+} // End llvm namespace
+
+#endif