//
// 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 file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
#ifndef BITSTREAM_READER_H
#define BITSTREAM_READER_H
+#include "llvm/ADT/OwningPtr.h"
#include "llvm/Bitcode/BitCodes.h"
+#include "llvm/Support/Endian.h"
+#include "llvm/Support/StreamableMemoryObject.h"
+#include <climits>
+#include <string>
+#include <vector>
namespace llvm {
-
+
+ class Deserializer;
+
class BitstreamReader {
- const unsigned char *NextChar;
- const unsigned char *LastChar;
-
+public:
+ /// BlockInfo - This contains information emitted to BLOCKINFO_BLOCK blocks.
+ /// These describe abbreviations that all blocks of the specified ID inherit.
+ struct BlockInfo {
+ unsigned BlockID;
+ std::vector<BitCodeAbbrev*> Abbrevs;
+ std::string Name;
+
+ std::vector<std::pair<unsigned, std::string> > RecordNames;
+ };
+private:
+ OwningPtr<StreamableMemoryObject> BitcodeBytes;
+
+ std::vector<BlockInfo> BlockInfoRecords;
+
+ /// IgnoreBlockInfoNames - This is set to true if we don't care about the
+ /// block/record name information in the BlockInfo block. Only llvm-bcanalyzer
+ /// uses this.
+ bool IgnoreBlockInfoNames;
+
+ BitstreamReader(const BitstreamReader&) LLVM_DELETED_FUNCTION;
+ void operator=(const BitstreamReader&) LLVM_DELETED_FUNCTION;
+public:
+ BitstreamReader() : IgnoreBlockInfoNames(true) {
+ }
+
+ BitstreamReader(const unsigned char *Start, const unsigned char *End) {
+ IgnoreBlockInfoNames = true;
+ init(Start, End);
+ }
+
+ BitstreamReader(StreamableMemoryObject *bytes) {
+ BitcodeBytes.reset(bytes);
+ }
+
+ void init(const unsigned char *Start, const unsigned char *End) {
+ assert(((End-Start) & 3) == 0 &&"Bitcode stream not a multiple of 4 bytes");
+ BitcodeBytes.reset(getNonStreamedMemoryObject(Start, End));
+ }
+
+ StreamableMemoryObject &getBitcodeBytes() { return *BitcodeBytes; }
+
+ ~BitstreamReader() {
+ // Free the BlockInfoRecords.
+ while (!BlockInfoRecords.empty()) {
+ BlockInfo &Info = BlockInfoRecords.back();
+ // Free blockinfo abbrev info.
+ for (unsigned i = 0, e = static_cast<unsigned>(Info.Abbrevs.size());
+ i != e; ++i)
+ Info.Abbrevs[i]->dropRef();
+ BlockInfoRecords.pop_back();
+ }
+ }
+
+ /// CollectBlockInfoNames - This is called by clients that want block/record
+ /// name information.
+ void CollectBlockInfoNames() { IgnoreBlockInfoNames = false; }
+ bool isIgnoringBlockInfoNames() { return IgnoreBlockInfoNames; }
+
+ //===--------------------------------------------------------------------===//
+ // Block Manipulation
+ //===--------------------------------------------------------------------===//
+
+ /// hasBlockInfoRecords - Return true if we've already read and processed the
+ /// block info block for this Bitstream. We only process it for the first
+ /// cursor that walks over it.
+ bool hasBlockInfoRecords() const { return !BlockInfoRecords.empty(); }
+
+ /// getBlockInfo - If there is block info for the specified ID, return it,
+ /// otherwise return null.
+ const BlockInfo *getBlockInfo(unsigned BlockID) const {
+ // Common case, the most recent entry matches BlockID.
+ if (!BlockInfoRecords.empty() && BlockInfoRecords.back().BlockID == BlockID)
+ return &BlockInfoRecords.back();
+
+ for (unsigned i = 0, e = static_cast<unsigned>(BlockInfoRecords.size());
+ i != e; ++i)
+ if (BlockInfoRecords[i].BlockID == BlockID)
+ return &BlockInfoRecords[i];
+ return 0;
+ }
+
+ BlockInfo &getOrCreateBlockInfo(unsigned BlockID) {
+ if (const BlockInfo *BI = getBlockInfo(BlockID))
+ return *const_cast<BlockInfo*>(BI);
+
+ // Otherwise, add a new record.
+ BlockInfoRecords.push_back(BlockInfo());
+ BlockInfoRecords.back().BlockID = BlockID;
+ return BlockInfoRecords.back();
+ }
+
+};
+
+class BitstreamCursor {
+ friend class Deserializer;
+ BitstreamReader *BitStream;
+ size_t NextChar;
+
/// CurWord - This is the current data we have pulled from the stream but have
/// not returned to the client.
uint32_t CurWord;
-
+
/// BitsInCurWord - This is the number of bits in CurWord that are valid. This
/// is always from [0...31] inclusive.
unsigned BitsInCurWord;
-
+
// CurCodeSize - This is the declared size of code values used for the current
// block, in bits.
unsigned CurCodeSize;
-
+
+ /// CurAbbrevs - Abbrevs installed at in this block.
+ std::vector<BitCodeAbbrev*> CurAbbrevs;
+
+ struct Block {
+ unsigned PrevCodeSize;
+ std::vector<BitCodeAbbrev*> PrevAbbrevs;
+ explicit Block(unsigned PCS) : PrevCodeSize(PCS) {}
+ };
+
/// BlockScope - This tracks the codesize of parent blocks.
- SmallVector<unsigned, 8> BlockScope;
-
+ SmallVector<Block, 8> BlockScope;
+
public:
- BitstreamReader(const unsigned char *Start, const unsigned char *End)
- : NextChar(Start), LastChar(End) {
- assert(((End-Start) & 3) == 0 &&"Bitcode stream not a multiple of 4 bytes");
+ BitstreamCursor() : BitStream(0), NextChar(0) {
+ }
+ BitstreamCursor(const BitstreamCursor &RHS) : BitStream(0), NextChar(0) {
+ operator=(RHS);
+ }
+
+ explicit BitstreamCursor(BitstreamReader &R) : BitStream(&R) {
+ NextChar = 0;
CurWord = 0;
BitsInCurWord = 0;
CurCodeSize = 2;
}
-
- bool AtEndOfStream() const { return NextChar == LastChar; }
-
+
+ void init(BitstreamReader &R) {
+ freeState();
+
+ BitStream = &R;
+ NextChar = 0;
+ CurWord = 0;
+ BitsInCurWord = 0;
+ CurCodeSize = 2;
+ }
+
+ ~BitstreamCursor() {
+ freeState();
+ }
+
+ void operator=(const BitstreamCursor &RHS) {
+ freeState();
+
+ BitStream = RHS.BitStream;
+ NextChar = RHS.NextChar;
+ CurWord = RHS.CurWord;
+ BitsInCurWord = RHS.BitsInCurWord;
+ CurCodeSize = RHS.CurCodeSize;
+
+ // Copy abbreviations, and bump ref counts.
+ CurAbbrevs = RHS.CurAbbrevs;
+ for (unsigned i = 0, e = static_cast<unsigned>(CurAbbrevs.size());
+ i != e; ++i)
+ CurAbbrevs[i]->addRef();
+
+ // Copy block scope and bump ref counts.
+ BlockScope = RHS.BlockScope;
+ for (unsigned S = 0, e = static_cast<unsigned>(BlockScope.size());
+ S != e; ++S) {
+ std::vector<BitCodeAbbrev*> &Abbrevs = BlockScope[S].PrevAbbrevs;
+ for (unsigned i = 0, e = static_cast<unsigned>(Abbrevs.size());
+ i != e; ++i)
+ Abbrevs[i]->addRef();
+ }
+ }
+
+ void freeState() {
+ // Free all the Abbrevs.
+ for (unsigned i = 0, e = static_cast<unsigned>(CurAbbrevs.size());
+ i != e; ++i)
+ CurAbbrevs[i]->dropRef();
+ CurAbbrevs.clear();
+
+ // Free all the Abbrevs in the block scope.
+ for (unsigned S = 0, e = static_cast<unsigned>(BlockScope.size());
+ S != e; ++S) {
+ std::vector<BitCodeAbbrev*> &Abbrevs = BlockScope[S].PrevAbbrevs;
+ for (unsigned i = 0, e = static_cast<unsigned>(Abbrevs.size());
+ i != e; ++i)
+ Abbrevs[i]->dropRef();
+ }
+ BlockScope.clear();
+ }
+
+ /// GetAbbrevIDWidth - Return the number of bits used to encode an abbrev #.
+ unsigned GetAbbrevIDWidth() const { return CurCodeSize; }
+
+ bool isEndPos(size_t pos) {
+ return BitStream->getBitcodeBytes().isObjectEnd(static_cast<uint64_t>(pos));
+ }
+
+ bool canSkipToPos(size_t pos) const {
+ // pos can be skipped to if it is a valid address or one byte past the end.
+ return pos == 0 || BitStream->getBitcodeBytes().isValidAddress(
+ static_cast<uint64_t>(pos - 1));
+ }
+
+ unsigned char getByte(size_t pos) {
+ uint8_t byte = -1;
+ BitStream->getBitcodeBytes().readByte(pos, &byte);
+ return byte;
+ }
+
+ uint32_t getWord(size_t pos) {
+ uint8_t buf[sizeof(uint32_t)];
+ memset(buf, 0xFF, sizeof(buf));
+ BitStream->getBitcodeBytes().readBytes(pos,
+ sizeof(buf),
+ buf,
+ NULL);
+ return *reinterpret_cast<support::ulittle32_t *>(buf);
+ }
+
+ bool AtEndOfStream() {
+ return isEndPos(NextChar) && BitsInCurWord == 0;
+ }
+
+ /// GetCurrentBitNo - Return the bit # of the bit we are reading.
+ uint64_t GetCurrentBitNo() const {
+ return NextChar*CHAR_BIT - BitsInCurWord;
+ }
+
+ BitstreamReader *getBitStreamReader() {
+ return BitStream;
+ }
+ const BitstreamReader *getBitStreamReader() const {
+ return BitStream;
+ }
+
+
+ /// JumpToBit - Reset the stream to the specified bit number.
+ void JumpToBit(uint64_t BitNo) {
+ uintptr_t ByteNo = uintptr_t(BitNo/8) & ~3;
+ uintptr_t WordBitNo = uintptr_t(BitNo) & 31;
+ assert(canSkipToPos(ByteNo) && "Invalid location");
+
+ // Move the cursor to the right word.
+ NextChar = ByteNo;
+ BitsInCurWord = 0;
+ CurWord = 0;
+
+ // Skip over any bits that are already consumed.
+ if (WordBitNo)
+ Read(static_cast<unsigned>(WordBitNo));
+ }
+
+
uint32_t Read(unsigned NumBits) {
+ assert(NumBits <= 32 && "Cannot return more than 32 bits!");
// If the field is fully contained by CurWord, return it quickly.
if (BitsInCurWord >= NumBits) {
uint32_t R = CurWord & ((1U << NumBits)-1);
}
// If we run out of data, stop at the end of the stream.
- if (LastChar == NextChar) {
+ if (isEndPos(NextChar)) {
CurWord = 0;
BitsInCurWord = 0;
return 0;
}
-
+
unsigned R = CurWord;
// Read the next word from the stream.
- CurWord = (NextChar[0] << 0) | (NextChar[1] << 8) |
- (NextChar[2] << 16) | (NextChar[3] << 24);
+ CurWord = getWord(NextChar);
NextChar += 4;
-
+
// Extract NumBits-BitsInCurWord from what we just read.
unsigned BitsLeft = NumBits-BitsInCurWord;
-
+
// Be careful here, BitsLeft is in the range [1..32] inclusive.
R |= (CurWord & (~0U >> (32-BitsLeft))) << BitsInCurWord;
-
+
// BitsLeft bits have just been used up from CurWord.
if (BitsLeft != 32)
CurWord >>= BitsLeft;
BitsInCurWord = 32-BitsLeft;
return R;
}
-
+
+ uint64_t Read64(unsigned NumBits) {
+ if (NumBits <= 32) return Read(NumBits);
+
+ uint64_t V = Read(32);
+ return V | (uint64_t)Read(NumBits-32) << 32;
+ }
+
uint32_t ReadVBR(unsigned NumBits) {
uint32_t Piece = Read(NumBits);
if ((Piece & (1U << (NumBits-1))) == 0)
if ((Piece & (1U << (NumBits-1))) == 0)
return Result;
-
+
NextBit += NumBits-1;
Piece = Read(NumBits);
}
}
-
+
+ // ReadVBR64 - Read a VBR that may have a value up to 64-bits in size. The
+ // chunk size of the VBR must still be <= 32 bits though.
uint64_t ReadVBR64(unsigned NumBits) {
- uint64_t Piece = Read(NumBits);
+ uint32_t Piece = Read(NumBits);
if ((Piece & (1U << (NumBits-1))) == 0)
- return Piece;
-
+ return uint64_t(Piece);
+
uint64_t Result = 0;
unsigned NextBit = 0;
while (1) {
- Result |= (Piece & ((1U << (NumBits-1))-1)) << NextBit;
-
+ Result |= uint64_t(Piece & ((1U << (NumBits-1))-1)) << NextBit;
+
if ((Piece & (1U << (NumBits-1))) == 0)
return Result;
-
+
NextBit += NumBits-1;
Piece = Read(NumBits);
}
CurWord = 0;
}
-
unsigned ReadCode() {
return Read(CurCodeSize);
}
- //===--------------------------------------------------------------------===//
- // Block Manipulation
- //===--------------------------------------------------------------------===//
-
+
// Block header:
// [ENTER_SUBBLOCK, blockid, newcodelen, <align4bytes>, blocklen]
unsigned ReadSubBlockID() {
return ReadVBR(bitc::BlockIDWidth);
}
-
+
/// SkipBlock - Having read the ENTER_SUBBLOCK abbrevid and a BlockID, skip
/// over the body of this block. If the block record is malformed, return
/// true.
ReadVBR(bitc::CodeLenWidth);
SkipToWord();
unsigned NumWords = Read(bitc::BlockSizeWidth);
-
+
// Check that the block wasn't partially defined, and that the offset isn't
// bogus.
- if (AtEndOfStream() || NextChar+NumWords*4 > LastChar)
+ size_t SkipTo = NextChar + NumWords*4;
+ if (AtEndOfStream() || !canSkipToPos(SkipTo))
return true;
-
- NextChar += NumWords*4;
+
+ NextChar = SkipTo;
return false;
}
-
- /// EnterSubBlock - Having read the ENTER_SUBBLOCK abbrevid, read and enter
- /// the block, returning the BlockID of the block we just entered.
- bool EnterSubBlock() {
- BlockScope.push_back(CurCodeSize);
-
+
+ /// EnterSubBlock - Having read the ENTER_SUBBLOCK abbrevid, enter
+ /// the block, and return true if the block has an error.
+ bool EnterSubBlock(unsigned BlockID, unsigned *NumWordsP = 0) {
+ // Save the current block's state on BlockScope.
+ BlockScope.push_back(Block(CurCodeSize));
+ BlockScope.back().PrevAbbrevs.swap(CurAbbrevs);
+
+ // Add the abbrevs specific to this block to the CurAbbrevs list.
+ if (const BitstreamReader::BlockInfo *Info =
+ BitStream->getBlockInfo(BlockID)) {
+ for (unsigned i = 0, e = static_cast<unsigned>(Info->Abbrevs.size());
+ i != e; ++i) {
+ CurAbbrevs.push_back(Info->Abbrevs[i]);
+ CurAbbrevs.back()->addRef();
+ }
+ }
+
// Get the codesize of this block.
CurCodeSize = ReadVBR(bitc::CodeLenWidth);
SkipToWord();
unsigned NumWords = Read(bitc::BlockSizeWidth);
-
+ if (NumWordsP) *NumWordsP = NumWords;
+
// Validate that this block is sane.
- if (CurCodeSize == 0 || AtEndOfStream() || NextChar+NumWords*4 > LastChar)
+ if (CurCodeSize == 0 || AtEndOfStream())
return true;
-
+
return false;
}
-
+
bool ReadBlockEnd() {
if (BlockScope.empty()) return true;
-
+
// Block tail:
// [END_BLOCK, <align4bytes>]
SkipToWord();
- CurCodeSize = BlockScope.back();
- BlockScope.pop_back();
+
+ PopBlockScope();
return false;
}
-
- //===--------------------------------------------------------------------===//
+
+private:
+ void PopBlockScope() {
+ CurCodeSize = BlockScope.back().PrevCodeSize;
+
+ // Delete abbrevs from popped scope.
+ for (unsigned i = 0, e = static_cast<unsigned>(CurAbbrevs.size());
+ i != e; ++i)
+ CurAbbrevs[i]->dropRef();
+
+ BlockScope.back().PrevAbbrevs.swap(CurAbbrevs);
+ BlockScope.pop_back();
+ }
+
+ //===--------------------------------------------------------------------===//
// Record Processing
//===--------------------------------------------------------------------===//
-
- unsigned ReadRecord(unsigned AbbrevID, SmallVectorImpl<uint64_t> &Vals) {
+
+private:
+ void ReadAbbreviatedLiteral(const BitCodeAbbrevOp &Op,
+ SmallVectorImpl<uint64_t> &Vals) {
+ assert(Op.isLiteral() && "Not a literal");
+ // If the abbrev specifies the literal value to use, use it.
+ Vals.push_back(Op.getLiteralValue());
+ }
+
+ void ReadAbbreviatedField(const BitCodeAbbrevOp &Op,
+ SmallVectorImpl<uint64_t> &Vals) {
+ assert(!Op.isLiteral() && "Use ReadAbbreviatedLiteral for literals!");
+
+ // Decode the value as we are commanded.
+ switch (Op.getEncoding()) {
+ default: llvm_unreachable("Unknown encoding!");
+ case BitCodeAbbrevOp::Fixed:
+ Vals.push_back(Read((unsigned)Op.getEncodingData()));
+ break;
+ case BitCodeAbbrevOp::VBR:
+ Vals.push_back(ReadVBR64((unsigned)Op.getEncodingData()));
+ break;
+ case BitCodeAbbrevOp::Char6:
+ Vals.push_back(BitCodeAbbrevOp::DecodeChar6(Read(6)));
+ break;
+ }
+ }
+public:
+
+ /// getAbbrev - Return the abbreviation for the specified AbbrevId.
+ const BitCodeAbbrev *getAbbrev(unsigned AbbrevID) {
+ unsigned AbbrevNo = AbbrevID-bitc::FIRST_APPLICATION_ABBREV;
+ assert(AbbrevNo < CurAbbrevs.size() && "Invalid abbrev #!");
+ return CurAbbrevs[AbbrevNo];
+ }
+
+ unsigned ReadRecord(unsigned AbbrevID, SmallVectorImpl<uint64_t> &Vals,
+ const char **BlobStart = 0, unsigned *BlobLen = 0) {
if (AbbrevID == bitc::UNABBREV_RECORD) {
unsigned Code = ReadVBR(6);
unsigned NumElts = ReadVBR(6);
Vals.push_back(ReadVBR64(6));
return Code;
}
-
- assert(0 && "Reading with abbrevs not implemented!");
- return 0;
+
+ const BitCodeAbbrev *Abbv = getAbbrev(AbbrevID);
+
+ for (unsigned i = 0, e = Abbv->getNumOperandInfos(); i != e; ++i) {
+ const BitCodeAbbrevOp &Op = Abbv->getOperandInfo(i);
+ if (Op.isLiteral()) {
+ ReadAbbreviatedLiteral(Op, Vals);
+ } else if (Op.getEncoding() == BitCodeAbbrevOp::Array) {
+ // Array case. Read the number of elements as a vbr6.
+ unsigned NumElts = ReadVBR(6);
+
+ // Get the element encoding.
+ assert(i+2 == e && "array op not second to last?");
+ const BitCodeAbbrevOp &EltEnc = Abbv->getOperandInfo(++i);
+
+ // Read all the elements.
+ for (; NumElts; --NumElts)
+ ReadAbbreviatedField(EltEnc, Vals);
+ } else if (Op.getEncoding() == BitCodeAbbrevOp::Blob) {
+ // Blob case. Read the number of bytes as a vbr6.
+ unsigned NumElts = ReadVBR(6);
+ SkipToWord(); // 32-bit alignment
+
+ // Figure out where the end of this blob will be including tail padding.
+ size_t NewEnd = NextChar+((NumElts+3)&~3);
+
+ // If this would read off the end of the bitcode file, just set the
+ // record to empty and return.
+ if (!canSkipToPos(NewEnd)) {
+ Vals.append(NumElts, 0);
+ NextChar = BitStream->getBitcodeBytes().getExtent();
+ break;
+ }
+
+ // Otherwise, read the number of bytes. If we can return a reference to
+ // the data, do so to avoid copying it.
+ if (BlobStart) {
+ *BlobStart = (const char*)BitStream->getBitcodeBytes().getPointer(
+ NextChar, NumElts);
+ *BlobLen = NumElts;
+ } else {
+ for (; NumElts; ++NextChar, --NumElts)
+ Vals.push_back(getByte(NextChar));
+ }
+ // Skip over tail padding.
+ NextChar = NewEnd;
+ } else {
+ ReadAbbreviatedField(Op, Vals);
+ }
+ }
+
+ unsigned Code = (unsigned)Vals[0];
+ Vals.erase(Vals.begin());
+ return Code;
+ }
+
+ unsigned ReadRecord(unsigned AbbrevID, SmallVectorImpl<uint64_t> &Vals,
+ const char *&BlobStart, unsigned &BlobLen) {
+ return ReadRecord(AbbrevID, Vals, &BlobStart, &BlobLen);
+ }
+
+
+ //===--------------------------------------------------------------------===//
+ // Abbrev Processing
+ //===--------------------------------------------------------------------===//
+
+ void ReadAbbrevRecord() {
+ BitCodeAbbrev *Abbv = new BitCodeAbbrev();
+ unsigned NumOpInfo = ReadVBR(5);
+ for (unsigned i = 0; i != NumOpInfo; ++i) {
+ bool IsLiteral = Read(1) ? true : false;
+ if (IsLiteral) {
+ Abbv->Add(BitCodeAbbrevOp(ReadVBR64(8)));
+ continue;
+ }
+
+ BitCodeAbbrevOp::Encoding E = (BitCodeAbbrevOp::Encoding)Read(3);
+ if (BitCodeAbbrevOp::hasEncodingData(E))
+ Abbv->Add(BitCodeAbbrevOp(E, ReadVBR64(5)));
+ else
+ Abbv->Add(BitCodeAbbrevOp(E));
+ }
+ CurAbbrevs.push_back(Abbv);
+ }
+
+public:
+
+ bool ReadBlockInfoBlock() {
+ // If this is the second stream to get to the block info block, skip it.
+ if (BitStream->hasBlockInfoRecords())
+ return SkipBlock();
+
+ if (EnterSubBlock(bitc::BLOCKINFO_BLOCK_ID)) return true;
+
+ SmallVector<uint64_t, 64> Record;
+ BitstreamReader::BlockInfo *CurBlockInfo = 0;
+
+ // Read all the records for this module.
+ while (1) {
+ unsigned Code = ReadCode();
+ if (Code == bitc::END_BLOCK)
+ return ReadBlockEnd();
+ if (Code == bitc::ENTER_SUBBLOCK) {
+ ReadSubBlockID();
+ if (SkipBlock()) return true;
+ continue;
+ }
+
+ // Read abbrev records, associate them with CurBID.
+ if (Code == bitc::DEFINE_ABBREV) {
+ if (!CurBlockInfo) return true;
+ ReadAbbrevRecord();
+
+ // ReadAbbrevRecord installs the abbrev in CurAbbrevs. Move it to the
+ // appropriate BlockInfo.
+ BitCodeAbbrev *Abbv = CurAbbrevs.back();
+ CurAbbrevs.pop_back();
+ CurBlockInfo->Abbrevs.push_back(Abbv);
+ continue;
+ }
+
+ // Read a record.
+ Record.clear();
+ switch (ReadRecord(Code, Record)) {
+ default: break; // Default behavior, ignore unknown content.
+ case bitc::BLOCKINFO_CODE_SETBID:
+ if (Record.size() < 1) return true;
+ CurBlockInfo = &BitStream->getOrCreateBlockInfo((unsigned)Record[0]);
+ break;
+ case bitc::BLOCKINFO_CODE_BLOCKNAME: {
+ if (!CurBlockInfo) return true;
+ if (BitStream->isIgnoringBlockInfoNames()) break; // Ignore name.
+ std::string Name;
+ for (unsigned i = 0, e = Record.size(); i != e; ++i)
+ Name += (char)Record[i];
+ CurBlockInfo->Name = Name;
+ break;
+ }
+ case bitc::BLOCKINFO_CODE_SETRECORDNAME: {
+ if (!CurBlockInfo) return true;
+ if (BitStream->isIgnoringBlockInfoNames()) break; // Ignore name.
+ std::string Name;
+ for (unsigned i = 1, e = Record.size(); i != e; ++i)
+ Name += (char)Record[i];
+ CurBlockInfo->RecordNames.push_back(std::make_pair((unsigned)Record[0],
+ Name));
+ break;
+ }
+ }
+ }
}
-
};
} // End llvm namespace
projects / oota-llvm.git / blobdiff