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97852839f7
the high-level interface to read/write LLVM IR bitcode files. This is a work in progress. llvm-svn: 36329
47 lines
1.5 KiB
C++
47 lines
1.5 KiB
C++
//===- BitCodes.h - Enum values for the bitcode format ----------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file was developed by Chris Lattner and is distributed under
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// the University of Illinois Open Source License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This header Bitcode enum values.
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//
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// The enum values defined in this file should be considered permanent. If
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// new features are added, they should have values added at the end of the
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// respective lists.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_BITCODE_BITCODES_H
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#define LLVM_BITCODE_BITCODES_H
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namespace llvm {
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namespace bitc {
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enum StandardWidths {
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BlockIDWidth = 8, // We use VBR-8 for block IDs.
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CodeLenWidth = 4, // Codelen are VBR-4.
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BlockSizeWidth = 32 // BlockSize up to 2^32 32-bit words = 32GB per block.
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};
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// The standard code namespace always has a way to exit a block, enter a
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// nested block, define abbrevs, and define an unabbreviated record.
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enum FixedCodes {
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END_BLOCK = 0, // Must be zero to guarantee termination for broken bitcode.
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ENTER_SUBBLOCK = 1,
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// Two codes are reserved for defining abbrevs and for emitting an
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// unabbreviated record.
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DEFINE_ABBREVS = 2,
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UNABBREV_RECORD = 3,
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// This is not a code, this is a marker for the first abbrev assignment.
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FIRST_ABBREV = 4
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};
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} // End bitc namespace
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} // End llvm namespace
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#endif
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