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1//===- BitcodeReader.cpp - Internal BitcodeReader implementation ----------===//
2//
3// The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9//
10// This header defines the BitcodeReader class.
11//
12//===----------------------------------------------------------------------===//
13
14#include "llvm/Bitcode/ReaderWriter.h"
15#include "BitcodeReader.h"
16#include "llvm/Constants.h"
17#include "llvm/DerivedTypes.h"
18#include "llvm/InlineAsm.h"
19#include "llvm/IntrinsicInst.h"
20#include "llvm/LLVMContext.h"
21#include "llvm/Metadata.h"
20#include "llvm/Module.h"
21#include "llvm/Operator.h"
22#include "llvm/AutoUpgrade.h"
23#include "llvm/ADT/SmallString.h"
24#include "llvm/ADT/SmallVector.h"
25#include "llvm/Support/MathExtras.h"
26#include "llvm/Support/MemoryBuffer.h"
27#include "llvm/OperandTraits.h"

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833 if (Record.empty() || RecordLength < 2)
834 return Error("Invalid METADATA_KIND record");
835 SmallString<8> Name;
836 Name.resize(RecordLength-1);
837 unsigned Kind = Record[0];
838 (void) Kind;
839 for (unsigned i = 1; i != RecordLength; ++i)
840 Name[i-1] = Record[i];
843 MetadataContext &TheMetadata = Context.getMetadata();
844 unsigned ExistingKind = TheMetadata.getMDKind(Name.str());
845 if (ExistingKind == 0) {
846 unsigned NewKind = TheMetadata.registerMDKind(Name.str());
847 (void) NewKind;
848 assert (Kind == NewKind
849 && "Unable to handle custom metadata mismatch!");
850 } else {
851 assert (ExistingKind == Kind
852 && "Unable to handle custom metadata mismatch!");
853 }
841
842 unsigned NewKind = TheModule->getMDKindID(Name.str());
843 assert(Kind == NewKind &&
844 "FIXME: Unable to handle custom metadata mismatch!");(void)NewKind;
845 break;
846 }
847 }
848 }
849}
850
851/// DecodeSignRotatedValue - Decode a signed value stored with the sign bit in
852/// the LSB for dense VBR encoding.

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1566 return false;
1567}
1568
1569/// ParseMetadataAttachment - Parse metadata attachments.
1570bool BitcodeReader::ParseMetadataAttachment() {
1571 if (Stream.EnterSubBlock(bitc::METADATA_ATTACHMENT_ID))
1572 return Error("Malformed block record");
1573
1583 MetadataContext &TheMetadata = Context.getMetadata();
1574 SmallVector<uint64_t, 64> Record;
1575 while(1) {
1576 unsigned Code = Stream.ReadCode();
1577 if (Code == bitc::END_BLOCK) {
1578 if (Stream.ReadBlockEnd())
1579 return Error("Error at end of PARAMATTR block");
1580 break;
1581 }

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1591 case bitc::METADATA_ATTACHMENT: {
1592 unsigned RecordLength = Record.size();
1593 if (Record.empty() || (RecordLength - 1) % 2 == 1)
1594 return Error ("Invalid METADATA_ATTACHMENT reader!");
1595 Instruction *Inst = InstructionList[Record[0]];
1596 for (unsigned i = 1; i != RecordLength; i = i+2) {
1597 unsigned Kind = Record[i];
1598 Value *Node = MDValueList.getValueFwdRef(Record[i+1]);
1609 TheMetadata.addMD(Kind, cast<MDNode>(Node), Inst);
1599 Inst->setMetadata(Kind, cast<MDNode>(Node));
1600 }
1601 break;
1602 }
1603 }
1604 }
1605 return false;
1606}
1607

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