1//===- BitcodeCommon.h - Common code for encode/decode --------*- C++ -*-===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8//
9// This header defines common code to be used by BitcodeWriter and
10// BitcodeReader.
11//
12//===----------------------------------------------------------------------===//
13
14#ifndef LLVM_BITCODE_BITCODECOMMON_H
15#define LLVM_BITCODE_BITCODECOMMON_H
16
17#include "llvm/ADT/Bitfields.h"
18
19namespace llvm {
20
21struct AllocaPackedValues {
22 // We increased the number of bits needed to represent alignment to be more
23 // than 5, but to preserve backward compatibility we store the upper bits
24 // separately.
25 using AlignLower = Bitfield::Element<unsigned, 0, 5>;
26 using UsedWithInAlloca = Bitfield::Element<bool, AlignLower::NextBit, 1>;
27 using ExplicitType = Bitfield::Element<bool, UsedWithInAlloca::NextBit, 1>;
28 using SwiftError = Bitfield::Element<bool, ExplicitType::NextBit, 1>;
29 using AlignUpper = Bitfield::Element<unsigned, SwiftError::NextBit, 3>;
30};
31
32} // namespace llvm
33
34#endif // LLVM_BITCODE_BITCODECOMMON_H
35