mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-08-21 03:29:40 +00:00
- stop passing Buf/BufEnd to every function (now member vars) - internalize things that used to be in a header file that no one else included/needed. - Remove defunct BCR_TRACE lines - Standardize error handling with the PARSE_ERROR macro. - Integrate ConstantReader.cpp and InstructionReader.cpp and reorgnize the definition order so that gcc has a chance at optimizing this module - Standardize case and style of method names. - Eliminate unneeded header files - Prepare for Type != Value (bug122) change by splitting Types into their own data structures. - Implement the BytecodeHandler interface calls. - Provide default implementation of BytecodeHandler interface. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14494 91177308-0d34-0410-b5e6-96231b3b80d8
1814 lines
60 KiB
C++
1814 lines
60 KiB
C++
//===- Reader.cpp - Code to read bytecode files ---------------------------===//
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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 the LLVM research group 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 library implements the functionality defined in llvm/Bytecode/Reader.h
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//
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// Note that this library should be as fast as possible, reentrant, and
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// threadsafe!!
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//
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// TODO: Allow passing in an option to ignore the symbol table
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//
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//===----------------------------------------------------------------------===//
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#include "Reader.h"
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#include "llvm/Bytecode/BytecodeHandler.h"
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#include "llvm/BasicBlock.h"
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#include "llvm/Constants.h"
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#include "llvm/iMemory.h"
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#include "llvm/iOther.h"
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#include "llvm/iPHINode.h"
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#include "llvm/iTerminators.h"
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#include "llvm/Bytecode/Format.h"
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#include "llvm/Support/GetElementPtrTypeIterator.h"
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#include "Support/StringExtras.h"
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#include <sstream>
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using namespace llvm;
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/// A convenience macro for calling the handler. Makes maintenance easier in
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/// case the interface to handler methods changes.
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#define HANDLE(method) \
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if ( Handler ) Handler->handle ## method
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/// A convenience macro for handling parsing errors.
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#define PARSE_ERROR(inserters) { \
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std::ostringstream errormsg; \
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errormsg << inserters; \
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throw std::string(errormsg.str()); \
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}
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/// @brief A class for maintaining the slot number definition
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/// as a placeholder for the actual definition.
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template<class SuperType>
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class PlaceholderDef : public SuperType {
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unsigned ID;
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PlaceholderDef(); // DO NOT IMPLEMENT
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void operator=(const PlaceholderDef &); // DO NOT IMPLEMENT
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public:
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PlaceholderDef(const Type *Ty, unsigned id) : SuperType(Ty), ID(id) {}
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unsigned getID() { return ID; }
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};
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struct ConstantPlaceHolderHelper : public ConstantExpr {
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ConstantPlaceHolderHelper(const Type *Ty)
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: ConstantExpr(Instruction::UserOp1, Constant::getNullValue(Ty), Ty) {}
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};
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typedef PlaceholderDef<ConstantPlaceHolderHelper> ConstPHolder;
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//===----------------------------------------------------------------------===//
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// Bytecode Reading Methods
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//===----------------------------------------------------------------------===//
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inline bool BytecodeReader::moreInBlock() {
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return At < BlockEnd;
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}
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inline void BytecodeReader::checkPastBlockEnd(const char * block_name) {
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if ( At > BlockEnd )
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PARSE_ERROR("Attempt to read past the end of " << block_name << " block.");
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}
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inline void BytecodeReader::align32() {
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BufPtr Save = At;
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At = (const unsigned char *)((unsigned long)(At+3) & (~3UL));
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if ( At > Save )
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HANDLE(Alignment( At - Save ));
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if (At > BlockEnd)
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PARSE_ERROR("Ran out of data while aligning!");
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}
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inline unsigned BytecodeReader::read_uint() {
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if (At+4 > BlockEnd)
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PARSE_ERROR("Ran out of data reading uint!");
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At += 4;
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return At[-4] | (At[-3] << 8) | (At[-2] << 16) | (At[-1] << 24);
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}
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inline unsigned BytecodeReader::read_vbr_uint() {
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unsigned Shift = 0;
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unsigned Result = 0;
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BufPtr Save = At;
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do {
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if (At == BlockEnd)
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PARSE_ERROR("Ran out of data reading vbr_uint!");
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Result |= (unsigned)((*At++) & 0x7F) << Shift;
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Shift += 7;
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} while (At[-1] & 0x80);
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HANDLE(VBR32(At-Save));
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return Result;
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}
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inline uint64_t BytecodeReader::read_vbr_uint64() {
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unsigned Shift = 0;
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uint64_t Result = 0;
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BufPtr Save = At;
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do {
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if (At == BlockEnd)
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PARSE_ERROR("Ran out of data reading vbr_uint64!");
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Result |= (uint64_t)((*At++) & 0x7F) << Shift;
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Shift += 7;
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} while (At[-1] & 0x80);
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HANDLE(VBR64(At-Save));
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return Result;
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}
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inline int64_t BytecodeReader::read_vbr_int64() {
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uint64_t R = read_vbr_uint64();
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if (R & 1) {
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if (R != 1)
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return -(int64_t)(R >> 1);
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else // There is no such thing as -0 with integers. "-0" really means
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// 0x8000000000000000.
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return 1LL << 63;
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} else
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return (int64_t)(R >> 1);
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}
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inline std::string BytecodeReader::read_str() {
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unsigned Size = read_vbr_uint();
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const unsigned char *OldAt = At;
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At += Size;
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if (At > BlockEnd) // Size invalid?
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PARSE_ERROR("Ran out of data reading a string!");
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return std::string((char*)OldAt, Size);
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}
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inline void BytecodeReader::read_data(void *Ptr, void *End) {
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unsigned char *Start = (unsigned char *)Ptr;
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unsigned Amount = (unsigned char *)End - Start;
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if (At+Amount > BlockEnd)
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PARSE_ERROR("Ran out of data!");
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std::copy(At, At+Amount, Start);
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At += Amount;
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}
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inline void BytecodeReader::read_block(unsigned &Type, unsigned &Size) {
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Type = read_uint();
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Size = read_uint();
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BlockStart = At;
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if ( At + Size > BlockEnd )
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PARSE_ERROR("Attempt to size a block past end of memory");
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BlockEnd = At + Size;
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HANDLE(Block( Type, BlockStart, Size ));
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}
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//===----------------------------------------------------------------------===//
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// IR Lookup Methods
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//===----------------------------------------------------------------------===//
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inline bool BytecodeReader::hasImplicitNull(unsigned TyID ) {
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if (!hasExplicitPrimitiveZeros)
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return TyID != Type::LabelTyID && TyID != Type::TypeTyID &&
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TyID != Type::VoidTyID;
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return TyID >= Type::FirstDerivedTyID;
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}
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const Type *BytecodeReader::getType(unsigned ID) {
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if (ID < Type::FirstDerivedTyID)
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if (const Type *T = Type::getPrimitiveType((Type::TypeID)ID))
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return T; // Asked for a primitive type...
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// Otherwise, derived types need offset...
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ID -= Type::FirstDerivedTyID;
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if (!CompactionTypes.empty()) {
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if (ID >= CompactionTypes.size())
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PARSE_ERROR("Type ID out of range for compaction table!");
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return CompactionTypes[ID];
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}
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// Is it a module-level type?
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if (ID < ModuleTypes.size())
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return ModuleTypes[ID].get();
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// Nope, is it a function-level type?
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ID -= ModuleTypes.size();
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if (ID < FunctionTypes.size())
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return FunctionTypes[ID].get();
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PARSE_ERROR("Illegal type reference!");
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return Type::VoidTy;
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}
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unsigned BytecodeReader::getTypeSlot(const Type *Ty) {
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if (Ty->isPrimitiveType())
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return Ty->getTypeID();
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// Scan the compaction table for the type if needed.
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if (!CompactionTypes.empty()) {
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std::vector<const Type*>::const_iterator I =
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find(CompactionTypes.begin(), CompactionTypes.end(), Ty);
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if (I == CompactionTypes.end())
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PARSE_ERROR("Couldn't find type specified in compaction table!");
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return Type::FirstDerivedTyID + (&*I - &CompactionTypes[0]);
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}
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// Check the function level types first...
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TypeListTy::iterator I = find(FunctionTypes.begin(), FunctionTypes.end(), Ty);
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if (I != FunctionTypes.end())
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return Type::FirstDerivedTyID + ModuleTypes.size() +
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(&*I - &FunctionTypes[0]);
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// Check the module level types now...
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I = find(ModuleTypes.begin(), ModuleTypes.end(), Ty);
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if (I == ModuleTypes.end())
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PARSE_ERROR("Didn't find type in ModuleTypes.");
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return Type::FirstDerivedTyID + (&*I - &ModuleTypes[0]);
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}
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const Type *BytecodeReader::getGlobalTableType(unsigned Slot) {
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if (Slot < Type::FirstDerivedTyID) {
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const Type *Ty = Type::getPrimitiveType((Type::TypeID)Slot);
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assert(Ty && "Not a primitive type ID?");
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return Ty;
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}
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Slot -= Type::FirstDerivedTyID;
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if (Slot >= ModuleTypes.size())
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PARSE_ERROR("Illegal compaction table type reference!");
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return ModuleTypes[Slot];
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}
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unsigned BytecodeReader::getGlobalTableTypeSlot(const Type *Ty) {
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if (Ty->isPrimitiveType())
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return Ty->getTypeID();
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TypeListTy::iterator I = find(ModuleTypes.begin(),
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ModuleTypes.end(), Ty);
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if (I == ModuleTypes.end())
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PARSE_ERROR("Didn't find type in ModuleTypes.");
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return Type::FirstDerivedTyID + (&*I - &ModuleTypes[0]);
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}
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Value * BytecodeReader::getValue(unsigned type, unsigned oNum, bool Create) {
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assert(type != Type::TypeTyID && "getValue() cannot get types!");
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assert(type != Type::LabelTyID && "getValue() cannot get blocks!");
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unsigned Num = oNum;
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// If there is a compaction table active, it defines the low-level numbers.
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// If not, the module values define the low-level numbers.
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if (CompactionValues.size() > type && !CompactionValues[type].empty()) {
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if (Num < CompactionValues[type].size())
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return CompactionValues[type][Num];
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Num -= CompactionValues[type].size();
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} else {
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// By default, the global type id is the type id passed in
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unsigned GlobalTyID = type;
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// If the type plane was compactified, figure out the global type ID
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// by adding the derived type ids and the distance.
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if (CompactionValues.size() > Type::TypeTyID &&
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!CompactionTypes.empty() &&
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type >= Type::FirstDerivedTyID) {
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const Type *Ty = CompactionTypes[type-Type::FirstDerivedTyID];
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TypeListTy::iterator I =
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find(ModuleTypes.begin(), ModuleTypes.end(), Ty);
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assert(I != ModuleTypes.end());
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GlobalTyID = Type::FirstDerivedTyID + (&*I - &ModuleTypes[0]);
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}
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if (hasImplicitNull(GlobalTyID)) {
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if (Num == 0)
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return Constant::getNullValue(getType(type));
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--Num;
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}
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if (GlobalTyID < ModuleValues.size() && ModuleValues[GlobalTyID]) {
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if (Num < ModuleValues[GlobalTyID]->size())
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return ModuleValues[GlobalTyID]->getOperand(Num);
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Num -= ModuleValues[GlobalTyID]->size();
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}
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}
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if (FunctionValues.size() > type &&
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FunctionValues[type] &&
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Num < FunctionValues[type]->size())
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return FunctionValues[type]->getOperand(Num);
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if (!Create) return 0; // Do not create a placeholder?
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std::pair<unsigned,unsigned> KeyValue(type, oNum);
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ForwardReferenceMap::iterator I = ForwardReferences.lower_bound(KeyValue);
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if (I != ForwardReferences.end() && I->first == KeyValue)
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return I->second; // We have already created this placeholder
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Value *Val = new Argument(getType(type));
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ForwardReferences.insert(I, std::make_pair(KeyValue, Val));
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return Val;
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}
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Value* BytecodeReader::getGlobalTableValue(const Type *Ty, unsigned SlotNo) {
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// FIXME: getTypeSlot is inefficient!
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unsigned TyID = getGlobalTableTypeSlot(Ty);
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if (TyID != Type::LabelTyID) {
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if (SlotNo == 0)
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return Constant::getNullValue(Ty);
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--SlotNo;
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}
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if (TyID >= ModuleValues.size() || ModuleValues[TyID] == 0 ||
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SlotNo >= ModuleValues[TyID]->size()) {
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PARSE_ERROR("Corrupt compaction table entry!"
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<< TyID << ", " << SlotNo << ": " << ModuleValues.size() << ", "
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<< (void*)ModuleValues[TyID] << ", "
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<< ModuleValues[TyID]->size() << "\n");
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}
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return ModuleValues[TyID]->getOperand(SlotNo);
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}
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Constant* BytecodeReader::getConstantValue(unsigned TypeSlot, unsigned Slot) {
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if (Value *V = getValue(TypeSlot, Slot, false))
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if (Constant *C = dyn_cast<Constant>(V))
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return C; // If we already have the value parsed, just return it
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else if (GlobalValue *GV = dyn_cast<GlobalValue>(V))
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// ConstantPointerRef's are an abomination, but at least they don't have
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// to infest bytecode files.
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return ConstantPointerRef::get(GV);
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else
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PARSE_ERROR("Reference of a value is expected to be a constant!");
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const Type *Ty = getType(TypeSlot);
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std::pair<const Type*, unsigned> Key(Ty, Slot);
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ConstantRefsType::iterator I = ConstantFwdRefs.lower_bound(Key);
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if (I != ConstantFwdRefs.end() && I->first == Key) {
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return I->second;
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} else {
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// Create a placeholder for the constant reference and
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// keep track of the fact that we have a forward ref to recycle it
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Constant *C = new ConstPHolder(Ty, Slot);
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// Keep track of the fact that we have a forward ref to recycle it
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ConstantFwdRefs.insert(I, std::make_pair(Key, C));
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return C;
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}
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}
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//===----------------------------------------------------------------------===//
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// IR Construction Methods
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//===----------------------------------------------------------------------===//
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unsigned BytecodeReader::insertValue(
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Value *Val, unsigned type, ValueTable &ValueTab) {
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assert((!isa<Constant>(Val) || !cast<Constant>(Val)->isNullValue()) ||
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!hasImplicitNull(type) &&
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"Cannot read null values from bytecode!");
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assert(type != Type::TypeTyID && "Types should never be insertValue'd!");
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if (ValueTab.size() <= type)
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ValueTab.resize(type+1);
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if (!ValueTab[type]) ValueTab[type] = new ValueList();
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ValueTab[type]->push_back(Val);
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bool HasOffset = hasImplicitNull(type);
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return ValueTab[type]->size()-1 + HasOffset;
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}
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void BytecodeReader::insertArguments(Function* F ) {
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const FunctionType *FT = F->getFunctionType();
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Function::aiterator AI = F->abegin();
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for (FunctionType::param_iterator It = FT->param_begin();
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It != FT->param_end(); ++It, ++AI)
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insertValue(AI, getTypeSlot(AI->getType()), FunctionValues);
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}
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//===----------------------------------------------------------------------===//
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// Bytecode Parsing Methods
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//===----------------------------------------------------------------------===//
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void BytecodeReader::ParseInstruction(std::vector<unsigned> &Oprnds,
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BasicBlock* BB) {
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BufPtr SaveAt = At;
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// Clear instruction data
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Oprnds.clear();
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unsigned iType = 0;
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unsigned Opcode = 0;
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unsigned Op = read_uint();
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// bits Instruction format: Common to all formats
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// --------------------------
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// 01-00: Opcode type, fixed to 1.
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// 07-02: Opcode
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Opcode = (Op >> 2) & 63;
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Oprnds.resize((Op >> 0) & 03);
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// Extract the operands
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switch (Oprnds.size()) {
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case 1:
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// bits Instruction format:
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// --------------------------
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// 19-08: Resulting type plane
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// 31-20: Operand #1 (if set to (2^12-1), then zero operands)
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//
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iType = (Op >> 8) & 4095;
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Oprnds[0] = (Op >> 20) & 4095;
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if (Oprnds[0] == 4095) // Handle special encoding for 0 operands...
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Oprnds.resize(0);
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break;
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case 2:
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// bits Instruction format:
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// --------------------------
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// 15-08: Resulting type plane
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// 23-16: Operand #1
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// 31-24: Operand #2
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//
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iType = (Op >> 8) & 255;
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Oprnds[0] = (Op >> 16) & 255;
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Oprnds[1] = (Op >> 24) & 255;
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break;
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case 3:
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// bits Instruction format:
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// --------------------------
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// 13-08: Resulting type plane
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// 19-14: Operand #1
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// 25-20: Operand #2
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// 31-26: Operand #3
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//
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iType = (Op >> 8) & 63;
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Oprnds[0] = (Op >> 14) & 63;
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Oprnds[1] = (Op >> 20) & 63;
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Oprnds[2] = (Op >> 26) & 63;
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break;
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case 0:
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At -= 4; // Hrm, try this again...
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Opcode = read_vbr_uint();
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Opcode >>= 2;
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iType = read_vbr_uint();
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unsigned NumOprnds = read_vbr_uint();
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Oprnds.resize(NumOprnds);
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if (NumOprnds == 0)
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PARSE_ERROR("Zero-argument instruction found; this is invalid.");
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for (unsigned i = 0; i != NumOprnds; ++i)
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Oprnds[i] = read_vbr_uint();
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align32();
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break;
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}
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|
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// Get the type of the instruction
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const Type *InstTy = getType(iType);
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// Hae enough to inform the handler now
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HANDLE(Instruction(Opcode, InstTy, Oprnds, At-SaveAt));
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// Declare the resulting instruction we'll build.
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Instruction *Result = 0;
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// Handle binary operators
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if (Opcode >= Instruction::BinaryOpsBegin &&
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Opcode < Instruction::BinaryOpsEnd && Oprnds.size() == 2)
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Result = BinaryOperator::create((Instruction::BinaryOps)Opcode,
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getValue(iType, Oprnds[0]),
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getValue(iType, Oprnds[1]));
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switch (Opcode) {
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default:
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if (Result == 0) PARSE_ERROR("Illegal instruction read!");
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break;
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case Instruction::VAArg:
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Result = new VAArgInst(getValue(iType, Oprnds[0]), getType(Oprnds[1]));
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break;
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case Instruction::VANext:
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Result = new VANextInst(getValue(iType, Oprnds[0]), getType(Oprnds[1]));
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break;
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case Instruction::Cast:
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Result = new CastInst(getValue(iType, Oprnds[0]), getType(Oprnds[1]));
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break;
|
|
case Instruction::Select:
|
|
Result = new SelectInst(getValue(Type::BoolTyID, Oprnds[0]),
|
|
getValue(iType, Oprnds[1]),
|
|
getValue(iType, Oprnds[2]));
|
|
break;
|
|
case Instruction::PHI: {
|
|
if (Oprnds.size() == 0 || (Oprnds.size() & 1))
|
|
PARSE_ERROR("Invalid phi node encountered!\n");
|
|
|
|
PHINode *PN = new PHINode(InstTy);
|
|
PN->op_reserve(Oprnds.size());
|
|
for (unsigned i = 0, e = Oprnds.size(); i != e; i += 2)
|
|
PN->addIncoming(getValue(iType, Oprnds[i]), getBasicBlock(Oprnds[i+1]));
|
|
Result = PN;
|
|
break;
|
|
}
|
|
|
|
case Instruction::Shl:
|
|
case Instruction::Shr:
|
|
Result = new ShiftInst((Instruction::OtherOps)Opcode,
|
|
getValue(iType, Oprnds[0]),
|
|
getValue(Type::UByteTyID, Oprnds[1]));
|
|
break;
|
|
case Instruction::Ret:
|
|
if (Oprnds.size() == 0)
|
|
Result = new ReturnInst();
|
|
else if (Oprnds.size() == 1)
|
|
Result = new ReturnInst(getValue(iType, Oprnds[0]));
|
|
else
|
|
PARSE_ERROR("Unrecognized instruction!");
|
|
break;
|
|
|
|
case Instruction::Br:
|
|
if (Oprnds.size() == 1)
|
|
Result = new BranchInst(getBasicBlock(Oprnds[0]));
|
|
else if (Oprnds.size() == 3)
|
|
Result = new BranchInst(getBasicBlock(Oprnds[0]),
|
|
getBasicBlock(Oprnds[1]), getValue(Type::BoolTyID , Oprnds[2]));
|
|
else
|
|
PARSE_ERROR("Invalid number of operands for a 'br' instruction!");
|
|
break;
|
|
case Instruction::Switch: {
|
|
if (Oprnds.size() & 1)
|
|
PARSE_ERROR("Switch statement with odd number of arguments!");
|
|
|
|
SwitchInst *I = new SwitchInst(getValue(iType, Oprnds[0]),
|
|
getBasicBlock(Oprnds[1]));
|
|
for (unsigned i = 2, e = Oprnds.size(); i != e; i += 2)
|
|
I->addCase(cast<Constant>(getValue(iType, Oprnds[i])),
|
|
getBasicBlock(Oprnds[i+1]));
|
|
Result = I;
|
|
break;
|
|
}
|
|
|
|
case Instruction::Call: {
|
|
if (Oprnds.size() == 0)
|
|
PARSE_ERROR("Invalid call instruction encountered!");
|
|
|
|
Value *F = getValue(iType, Oprnds[0]);
|
|
|
|
// Check to make sure we have a pointer to function type
|
|
const PointerType *PTy = dyn_cast<PointerType>(F->getType());
|
|
if (PTy == 0) PARSE_ERROR("Call to non function pointer value!");
|
|
const FunctionType *FTy = dyn_cast<FunctionType>(PTy->getElementType());
|
|
if (FTy == 0) PARSE_ERROR("Call to non function pointer value!");
|
|
|
|
std::vector<Value *> Params;
|
|
if (!FTy->isVarArg()) {
|
|
FunctionType::param_iterator It = FTy->param_begin();
|
|
|
|
for (unsigned i = 1, e = Oprnds.size(); i != e; ++i) {
|
|
if (It == FTy->param_end())
|
|
PARSE_ERROR("Invalid call instruction!");
|
|
Params.push_back(getValue(getTypeSlot(*It++), Oprnds[i]));
|
|
}
|
|
if (It != FTy->param_end())
|
|
PARSE_ERROR("Invalid call instruction!");
|
|
} else {
|
|
Oprnds.erase(Oprnds.begin(), Oprnds.begin()+1);
|
|
|
|
unsigned FirstVariableOperand;
|
|
if (Oprnds.size() < FTy->getNumParams())
|
|
PARSE_ERROR("Call instruction missing operands!");
|
|
|
|
// Read all of the fixed arguments
|
|
for (unsigned i = 0, e = FTy->getNumParams(); i != e; ++i)
|
|
Params.push_back(getValue(getTypeSlot(FTy->getParamType(i)),Oprnds[i]));
|
|
|
|
FirstVariableOperand = FTy->getNumParams();
|
|
|
|
if ((Oprnds.size()-FirstVariableOperand) & 1) // Must be pairs of type/value
|
|
PARSE_ERROR("Invalid call instruction!");
|
|
|
|
for (unsigned i = FirstVariableOperand, e = Oprnds.size();
|
|
i != e; i += 2)
|
|
Params.push_back(getValue(Oprnds[i], Oprnds[i+1]));
|
|
}
|
|
|
|
Result = new CallInst(F, Params);
|
|
break;
|
|
}
|
|
case Instruction::Invoke: {
|
|
if (Oprnds.size() < 3) PARSE_ERROR("Invalid invoke instruction!");
|
|
Value *F = getValue(iType, Oprnds[0]);
|
|
|
|
// Check to make sure we have a pointer to function type
|
|
const PointerType *PTy = dyn_cast<PointerType>(F->getType());
|
|
if (PTy == 0) PARSE_ERROR("Invoke to non function pointer value!");
|
|
const FunctionType *FTy = dyn_cast<FunctionType>(PTy->getElementType());
|
|
if (FTy == 0) PARSE_ERROR("Invoke to non function pointer value!");
|
|
|
|
std::vector<Value *> Params;
|
|
BasicBlock *Normal, *Except;
|
|
|
|
if (!FTy->isVarArg()) {
|
|
Normal = getBasicBlock(Oprnds[1]);
|
|
Except = getBasicBlock(Oprnds[2]);
|
|
|
|
FunctionType::param_iterator It = FTy->param_begin();
|
|
for (unsigned i = 3, e = Oprnds.size(); i != e; ++i) {
|
|
if (It == FTy->param_end())
|
|
PARSE_ERROR("Invalid invoke instruction!");
|
|
Params.push_back(getValue(getTypeSlot(*It++), Oprnds[i]));
|
|
}
|
|
if (It != FTy->param_end())
|
|
PARSE_ERROR("Invalid invoke instruction!");
|
|
} else {
|
|
Oprnds.erase(Oprnds.begin(), Oprnds.begin()+1);
|
|
|
|
Normal = getBasicBlock(Oprnds[0]);
|
|
Except = getBasicBlock(Oprnds[1]);
|
|
|
|
unsigned FirstVariableArgument = FTy->getNumParams()+2;
|
|
for (unsigned i = 2; i != FirstVariableArgument; ++i)
|
|
Params.push_back(getValue(getTypeSlot(FTy->getParamType(i-2)),
|
|
Oprnds[i]));
|
|
|
|
if (Oprnds.size()-FirstVariableArgument & 1) // Must be type/value pairs
|
|
PARSE_ERROR("Invalid invoke instruction!");
|
|
|
|
for (unsigned i = FirstVariableArgument; i < Oprnds.size(); i += 2)
|
|
Params.push_back(getValue(Oprnds[i], Oprnds[i+1]));
|
|
}
|
|
|
|
Result = new InvokeInst(F, Normal, Except, Params);
|
|
break;
|
|
}
|
|
case Instruction::Malloc:
|
|
if (Oprnds.size() > 2) PARSE_ERROR("Invalid malloc instruction!");
|
|
if (!isa<PointerType>(InstTy))
|
|
PARSE_ERROR("Invalid malloc instruction!");
|
|
|
|
Result = new MallocInst(cast<PointerType>(InstTy)->getElementType(),
|
|
Oprnds.size() ? getValue(Type::UIntTyID,
|
|
Oprnds[0]) : 0);
|
|
break;
|
|
|
|
case Instruction::Alloca:
|
|
if (Oprnds.size() > 2) PARSE_ERROR("Invalid alloca instruction!");
|
|
if (!isa<PointerType>(InstTy))
|
|
PARSE_ERROR("Invalid alloca instruction!");
|
|
|
|
Result = new AllocaInst(cast<PointerType>(InstTy)->getElementType(),
|
|
Oprnds.size() ? getValue(Type::UIntTyID,
|
|
Oprnds[0]) :0);
|
|
break;
|
|
case Instruction::Free:
|
|
if (!isa<PointerType>(InstTy))
|
|
PARSE_ERROR("Invalid free instruction!");
|
|
Result = new FreeInst(getValue(iType, Oprnds[0]));
|
|
break;
|
|
case Instruction::GetElementPtr: {
|
|
if (Oprnds.size() == 0 || !isa<PointerType>(InstTy))
|
|
PARSE_ERROR("Invalid getelementptr instruction!");
|
|
|
|
std::vector<Value*> Idx;
|
|
|
|
const Type *NextTy = InstTy;
|
|
for (unsigned i = 1, e = Oprnds.size(); i != e; ++i) {
|
|
const CompositeType *TopTy = dyn_cast_or_null<CompositeType>(NextTy);
|
|
if (!TopTy) PARSE_ERROR("Invalid getelementptr instruction!");
|
|
|
|
unsigned ValIdx = Oprnds[i];
|
|
unsigned IdxTy = 0;
|
|
if (!hasRestrictedGEPTypes) {
|
|
// Struct indices are always uints, sequential type indices can be any
|
|
// of the 32 or 64-bit integer types. The actual choice of type is
|
|
// encoded in the low two bits of the slot number.
|
|
if (isa<StructType>(TopTy))
|
|
IdxTy = Type::UIntTyID;
|
|
else {
|
|
switch (ValIdx & 3) {
|
|
default:
|
|
case 0: IdxTy = Type::UIntTyID; break;
|
|
case 1: IdxTy = Type::IntTyID; break;
|
|
case 2: IdxTy = Type::ULongTyID; break;
|
|
case 3: IdxTy = Type::LongTyID; break;
|
|
}
|
|
ValIdx >>= 2;
|
|
}
|
|
} else {
|
|
IdxTy = isa<StructType>(TopTy) ? Type::UByteTyID : Type::LongTyID;
|
|
}
|
|
|
|
Idx.push_back(getValue(IdxTy, ValIdx));
|
|
|
|
// Convert ubyte struct indices into uint struct indices.
|
|
if (isa<StructType>(TopTy) && hasRestrictedGEPTypes)
|
|
if (ConstantUInt *C = dyn_cast<ConstantUInt>(Idx.back()))
|
|
Idx[Idx.size()-1] = ConstantExpr::getCast(C, Type::UIntTy);
|
|
|
|
NextTy = GetElementPtrInst::getIndexedType(InstTy, Idx, true);
|
|
}
|
|
|
|
Result = new GetElementPtrInst(getValue(iType, Oprnds[0]), Idx);
|
|
break;
|
|
}
|
|
|
|
case 62: // volatile load
|
|
case Instruction::Load:
|
|
if (Oprnds.size() != 1 || !isa<PointerType>(InstTy))
|
|
PARSE_ERROR("Invalid load instruction!");
|
|
Result = new LoadInst(getValue(iType, Oprnds[0]), "", Opcode == 62);
|
|
break;
|
|
|
|
case 63: // volatile store
|
|
case Instruction::Store: {
|
|
if (!isa<PointerType>(InstTy) || Oprnds.size() != 2)
|
|
PARSE_ERROR("Invalid store instruction!");
|
|
|
|
Value *Ptr = getValue(iType, Oprnds[1]);
|
|
const Type *ValTy = cast<PointerType>(Ptr->getType())->getElementType();
|
|
Result = new StoreInst(getValue(getTypeSlot(ValTy), Oprnds[0]), Ptr,
|
|
Opcode == 63);
|
|
break;
|
|
}
|
|
case Instruction::Unwind:
|
|
if (Oprnds.size() != 0) PARSE_ERROR("Invalid unwind instruction!");
|
|
Result = new UnwindInst();
|
|
break;
|
|
} // end switch(Opcode)
|
|
|
|
unsigned TypeSlot;
|
|
if (Result->getType() == InstTy)
|
|
TypeSlot = iType;
|
|
else
|
|
TypeSlot = getTypeSlot(Result->getType());
|
|
|
|
insertValue(Result, TypeSlot, FunctionValues);
|
|
BB->getInstList().push_back(Result);
|
|
}
|
|
|
|
/// getBasicBlock - Get a particular numbered basic block, which might be a
|
|
/// forward reference. This works together with ParseBasicBlock to handle these
|
|
/// forward references in a clean manner.
|
|
BasicBlock *BytecodeReader::getBasicBlock(unsigned ID) {
|
|
// Make sure there is room in the table...
|
|
if (ParsedBasicBlocks.size() <= ID) ParsedBasicBlocks.resize(ID+1);
|
|
|
|
// First check to see if this is a backwards reference, i.e., ParseBasicBlock
|
|
// has already created this block, or if the forward reference has already
|
|
// been created.
|
|
if (ParsedBasicBlocks[ID])
|
|
return ParsedBasicBlocks[ID];
|
|
|
|
// Otherwise, the basic block has not yet been created. Do so and add it to
|
|
// the ParsedBasicBlocks list.
|
|
return ParsedBasicBlocks[ID] = new BasicBlock();
|
|
}
|
|
|
|
/// ParseBasicBlock - In LLVM 1.0 bytecode files, we used to output one
|
|
/// basicblock at a time. This method reads in one of the basicblock packets.
|
|
BasicBlock *BytecodeReader::ParseBasicBlock( unsigned BlockNo) {
|
|
HANDLE(BasicBlockBegin( BlockNo ));
|
|
|
|
BasicBlock *BB = 0;
|
|
|
|
if (ParsedBasicBlocks.size() == BlockNo)
|
|
ParsedBasicBlocks.push_back(BB = new BasicBlock());
|
|
else if (ParsedBasicBlocks[BlockNo] == 0)
|
|
BB = ParsedBasicBlocks[BlockNo] = new BasicBlock();
|
|
else
|
|
BB = ParsedBasicBlocks[BlockNo];
|
|
|
|
std::vector<unsigned> Operands;
|
|
while ( moreInBlock() )
|
|
ParseInstruction(Operands, BB);
|
|
|
|
HANDLE(BasicBlockEnd( BlockNo ));
|
|
return BB;
|
|
}
|
|
|
|
/// ParseInstructionList - Parse all of the BasicBlock's & Instruction's in the
|
|
/// body of a function. In post 1.0 bytecode files, we no longer emit basic
|
|
/// block individually, in order to avoid per-basic-block overhead.
|
|
unsigned BytecodeReader::ParseInstructionList(Function* F) {
|
|
unsigned BlockNo = 0;
|
|
std::vector<unsigned> Args;
|
|
|
|
while ( moreInBlock() ) {
|
|
HANDLE(BasicBlockBegin( BlockNo ));
|
|
BasicBlock *BB;
|
|
if (ParsedBasicBlocks.size() == BlockNo)
|
|
ParsedBasicBlocks.push_back(BB = new BasicBlock());
|
|
else if (ParsedBasicBlocks[BlockNo] == 0)
|
|
BB = ParsedBasicBlocks[BlockNo] = new BasicBlock();
|
|
else
|
|
BB = ParsedBasicBlocks[BlockNo];
|
|
HANDLE(BasicBlockEnd( BlockNo ));
|
|
++BlockNo;
|
|
F->getBasicBlockList().push_back(BB);
|
|
|
|
// Read instructions into this basic block until we get to a terminator
|
|
while ( moreInBlock() && !BB->getTerminator())
|
|
ParseInstruction(Args, BB);
|
|
|
|
if (!BB->getTerminator())
|
|
PARSE_ERROR("Non-terminated basic block found!");
|
|
}
|
|
|
|
return BlockNo;
|
|
}
|
|
|
|
void BytecodeReader::ParseSymbolTable(Function *CurrentFunction,
|
|
SymbolTable *ST) {
|
|
HANDLE(SymbolTableBegin(CurrentFunction,ST));
|
|
|
|
// Allow efficient basic block lookup by number.
|
|
std::vector<BasicBlock*> BBMap;
|
|
if (CurrentFunction)
|
|
for (Function::iterator I = CurrentFunction->begin(),
|
|
E = CurrentFunction->end(); I != E; ++I)
|
|
BBMap.push_back(I);
|
|
|
|
while ( moreInBlock() ) {
|
|
// Symtab block header: [num entries][type id number]
|
|
unsigned NumEntries = read_vbr_uint();
|
|
unsigned Typ = read_vbr_uint();
|
|
const Type *Ty = getType(Typ);
|
|
|
|
for (unsigned i = 0; i != NumEntries; ++i) {
|
|
// Symtab entry: [def slot #][name]
|
|
unsigned slot = read_vbr_uint();
|
|
std::string Name = read_str();
|
|
|
|
Value *V = 0;
|
|
if (Typ == Type::TypeTyID)
|
|
V = (Value*)getType(slot);
|
|
else if (Typ == Type::LabelTyID) {
|
|
if (slot < BBMap.size())
|
|
V = BBMap[slot];
|
|
} else {
|
|
V = getValue(Typ, slot, false); // Find mapping...
|
|
}
|
|
if (V == 0)
|
|
PARSE_ERROR("Failed value look-up for name '" << Name << "'");
|
|
|
|
V->setName(Name, ST);
|
|
}
|
|
}
|
|
checkPastBlockEnd("Symbol Table");
|
|
HANDLE(SymbolTableEnd());
|
|
}
|
|
|
|
void BytecodeReader::ParseCompactionTable() {
|
|
|
|
HANDLE(CompactionTableBegin());
|
|
|
|
while ( moreInBlock() ) {
|
|
unsigned NumEntries = read_vbr_uint();
|
|
unsigned Ty;
|
|
|
|
if ((NumEntries & 3) == 3) {
|
|
NumEntries >>= 2;
|
|
Ty = read_vbr_uint();
|
|
} else {
|
|
Ty = NumEntries >> 2;
|
|
NumEntries &= 3;
|
|
}
|
|
|
|
if (Ty >= CompactionValues.size())
|
|
CompactionValues.resize(Ty+1);
|
|
|
|
if (!CompactionValues[Ty].empty())
|
|
PARSE_ERROR("Compaction table plane contains multiple entries!");
|
|
|
|
HANDLE(CompactionTablePlane( Ty, NumEntries ));
|
|
|
|
if (Ty == Type::TypeTyID) {
|
|
for (unsigned i = 0; i != NumEntries; ++i) {
|
|
unsigned TypeSlot = read_vbr_uint();
|
|
const Type *Typ = getGlobalTableType(TypeSlot);
|
|
CompactionTypes.push_back(Typ);
|
|
HANDLE(CompactionTableType( i, TypeSlot, Typ ));
|
|
}
|
|
CompactionTypes.resize(NumEntries+Type::FirstDerivedTyID);
|
|
} else {
|
|
const Type *Typ = getType(Ty);
|
|
// Push the implicit zero
|
|
CompactionValues[Ty].push_back(Constant::getNullValue(Typ));
|
|
for (unsigned i = 0; i != NumEntries; ++i) {
|
|
unsigned ValSlot = read_vbr_uint();
|
|
Value *V = getGlobalTableValue(Typ, ValSlot);
|
|
CompactionValues[Ty].push_back(V);
|
|
HANDLE(CompactionTableValue( i, Ty, ValSlot, Typ ));
|
|
}
|
|
}
|
|
}
|
|
HANDLE(CompactionTableEnd());
|
|
}
|
|
|
|
// Parse a single type constant.
|
|
const Type *BytecodeReader::ParseTypeConstant() {
|
|
unsigned PrimType = read_vbr_uint();
|
|
|
|
const Type *Result = 0;
|
|
if ((Result = Type::getPrimitiveType((Type::TypeID)PrimType)))
|
|
return Result;
|
|
|
|
switch (PrimType) {
|
|
case Type::FunctionTyID: {
|
|
const Type *RetType = getType(read_vbr_uint());
|
|
|
|
unsigned NumParams = read_vbr_uint();
|
|
|
|
std::vector<const Type*> Params;
|
|
while (NumParams--)
|
|
Params.push_back(getType(read_vbr_uint()));
|
|
|
|
bool isVarArg = Params.size() && Params.back() == Type::VoidTy;
|
|
if (isVarArg) Params.pop_back();
|
|
|
|
Result = FunctionType::get(RetType, Params, isVarArg);
|
|
break;
|
|
}
|
|
case Type::ArrayTyID: {
|
|
unsigned ElTyp = read_vbr_uint();
|
|
const Type *ElementType = getType(ElTyp);
|
|
|
|
unsigned NumElements = read_vbr_uint();
|
|
|
|
Result = ArrayType::get(ElementType, NumElements);
|
|
break;
|
|
}
|
|
case Type::StructTyID: {
|
|
std::vector<const Type*> Elements;
|
|
unsigned Typ = read_vbr_uint();
|
|
while (Typ) { // List is terminated by void/0 typeid
|
|
Elements.push_back(getType(Typ));
|
|
Typ = read_vbr_uint();
|
|
}
|
|
|
|
Result = StructType::get(Elements);
|
|
break;
|
|
}
|
|
case Type::PointerTyID: {
|
|
unsigned ElTyp = read_vbr_uint();
|
|
Result = PointerType::get(getType(ElTyp));
|
|
break;
|
|
}
|
|
|
|
case Type::OpaqueTyID: {
|
|
Result = OpaqueType::get();
|
|
break;
|
|
}
|
|
|
|
default:
|
|
PARSE_ERROR("Don't know how to deserialize primitive type" << PrimType << "\n");
|
|
break;
|
|
}
|
|
HANDLE(Type( Result ));
|
|
return Result;
|
|
}
|
|
|
|
// ParseTypeConstants - We have to use this weird code to handle recursive
|
|
// types. We know that recursive types will only reference the current slab of
|
|
// values in the type plane, but they can forward reference types before they
|
|
// have been read. For example, Type #0 might be '{ Ty#1 }' and Type #1 might
|
|
// be 'Ty#0*'. When reading Type #0, type number one doesn't exist. To fix
|
|
// this ugly problem, we pessimistically insert an opaque type for each type we
|
|
// are about to read. This means that forward references will resolve to
|
|
// something and when we reread the type later, we can replace the opaque type
|
|
// with a new resolved concrete type.
|
|
//
|
|
void BytecodeReader::ParseTypeConstants(TypeListTy &Tab, unsigned NumEntries){
|
|
assert(Tab.size() == 0 && "should not have read type constants in before!");
|
|
|
|
// Insert a bunch of opaque types to be resolved later...
|
|
Tab.reserve(NumEntries);
|
|
for (unsigned i = 0; i != NumEntries; ++i)
|
|
Tab.push_back(OpaqueType::get());
|
|
|
|
// Loop through reading all of the types. Forward types will make use of the
|
|
// opaque types just inserted.
|
|
//
|
|
for (unsigned i = 0; i != NumEntries; ++i) {
|
|
const Type *NewTy = ParseTypeConstant(), *OldTy = Tab[i].get();
|
|
if (NewTy == 0) PARSE_ERROR("Couldn't parse type!");
|
|
|
|
// Don't directly push the new type on the Tab. Instead we want to replace
|
|
// the opaque type we previously inserted with the new concrete value. This
|
|
// approach helps with forward references to types. The refinement from the
|
|
// abstract (opaque) type to the new type causes all uses of the abstract
|
|
// type to use the concrete type (NewTy). This will also cause the opaque
|
|
// type to be deleted.
|
|
cast<DerivedType>(const_cast<Type*>(OldTy))->refineAbstractTypeTo(NewTy);
|
|
|
|
// This should have replaced the old opaque type with the new type in the
|
|
// value table... or with a preexisting type that was already in the system.
|
|
// Let's just make sure it did.
|
|
assert(Tab[i] != OldTy && "refineAbstractType didn't work!");
|
|
}
|
|
}
|
|
|
|
Constant *BytecodeReader::ParseConstantValue( unsigned TypeID) {
|
|
// We must check for a ConstantExpr before switching by type because
|
|
// a ConstantExpr can be of any type, and has no explicit value.
|
|
//
|
|
// 0 if not expr; numArgs if is expr
|
|
unsigned isExprNumArgs = read_vbr_uint();
|
|
|
|
if (isExprNumArgs) {
|
|
// FIXME: Encoding of constant exprs could be much more compact!
|
|
std::vector<Constant*> ArgVec;
|
|
ArgVec.reserve(isExprNumArgs);
|
|
unsigned Opcode = read_vbr_uint();
|
|
|
|
// Read the slot number and types of each of the arguments
|
|
for (unsigned i = 0; i != isExprNumArgs; ++i) {
|
|
unsigned ArgValSlot = read_vbr_uint();
|
|
unsigned ArgTypeSlot = read_vbr_uint();
|
|
|
|
// Get the arg value from its slot if it exists, otherwise a placeholder
|
|
ArgVec.push_back(getConstantValue(ArgTypeSlot, ArgValSlot));
|
|
}
|
|
|
|
// Construct a ConstantExpr of the appropriate kind
|
|
if (isExprNumArgs == 1) { // All one-operand expressions
|
|
assert(Opcode == Instruction::Cast);
|
|
Constant* Result = ConstantExpr::getCast(ArgVec[0], getType(TypeID));
|
|
HANDLE(ConstantExpression(Opcode, ArgVec, Result));
|
|
return Result;
|
|
} else if (Opcode == Instruction::GetElementPtr) { // GetElementPtr
|
|
std::vector<Constant*> IdxList(ArgVec.begin()+1, ArgVec.end());
|
|
|
|
if (hasRestrictedGEPTypes) {
|
|
const Type *BaseTy = ArgVec[0]->getType();
|
|
generic_gep_type_iterator<std::vector<Constant*>::iterator>
|
|
GTI = gep_type_begin(BaseTy, IdxList.begin(), IdxList.end()),
|
|
E = gep_type_end(BaseTy, IdxList.begin(), IdxList.end());
|
|
for (unsigned i = 0; GTI != E; ++GTI, ++i)
|
|
if (isa<StructType>(*GTI)) {
|
|
if (IdxList[i]->getType() != Type::UByteTy)
|
|
PARSE_ERROR("Invalid index for getelementptr!");
|
|
IdxList[i] = ConstantExpr::getCast(IdxList[i], Type::UIntTy);
|
|
}
|
|
}
|
|
|
|
Constant* Result = ConstantExpr::getGetElementPtr(ArgVec[0], IdxList);
|
|
HANDLE(ConstantExpression(Opcode, ArgVec, Result));
|
|
return Result;
|
|
} else if (Opcode == Instruction::Select) {
|
|
assert(ArgVec.size() == 3);
|
|
Constant* Result = ConstantExpr::getSelect(ArgVec[0], ArgVec[1],
|
|
ArgVec[2]);
|
|
HANDLE(ConstantExpression(Opcode, ArgVec, Result));
|
|
return Result;
|
|
} else { // All other 2-operand expressions
|
|
Constant* Result = ConstantExpr::get(Opcode, ArgVec[0], ArgVec[1]);
|
|
HANDLE(ConstantExpression(Opcode, ArgVec, Result));
|
|
return Result;
|
|
}
|
|
}
|
|
|
|
// Ok, not an ConstantExpr. We now know how to read the given type...
|
|
const Type *Ty = getType(TypeID);
|
|
switch (Ty->getTypeID()) {
|
|
case Type::BoolTyID: {
|
|
unsigned Val = read_vbr_uint();
|
|
if (Val != 0 && Val != 1)
|
|
PARSE_ERROR("Invalid boolean value read.");
|
|
Constant* Result = ConstantBool::get(Val == 1);
|
|
HANDLE(ConstantValue(Result));
|
|
return Result;
|
|
}
|
|
|
|
case Type::UByteTyID: // Unsigned integer types...
|
|
case Type::UShortTyID:
|
|
case Type::UIntTyID: {
|
|
unsigned Val = read_vbr_uint();
|
|
if (!ConstantUInt::isValueValidForType(Ty, Val))
|
|
PARSE_ERROR("Invalid unsigned byte/short/int read.");
|
|
Constant* Result = ConstantUInt::get(Ty, Val);
|
|
HANDLE(ConstantValue(Result));
|
|
return Result;
|
|
}
|
|
|
|
case Type::ULongTyID: {
|
|
Constant* Result = ConstantUInt::get(Ty, read_vbr_uint64());
|
|
HANDLE(ConstantValue(Result));
|
|
return Result;
|
|
}
|
|
|
|
case Type::SByteTyID: // Signed integer types...
|
|
case Type::ShortTyID:
|
|
case Type::IntTyID: {
|
|
case Type::LongTyID:
|
|
int64_t Val = read_vbr_int64();
|
|
if (!ConstantSInt::isValueValidForType(Ty, Val))
|
|
PARSE_ERROR("Invalid signed byte/short/int/long read.");
|
|
Constant* Result = ConstantSInt::get(Ty, Val);
|
|
HANDLE(ConstantValue(Result));
|
|
return Result;
|
|
}
|
|
|
|
case Type::FloatTyID: {
|
|
float F;
|
|
read_data(&F, &F+1);
|
|
Constant* Result = ConstantFP::get(Ty, F);
|
|
HANDLE(ConstantValue(Result));
|
|
return Result;
|
|
}
|
|
|
|
case Type::DoubleTyID: {
|
|
double Val;
|
|
read_data(&Val, &Val+1);
|
|
Constant* Result = ConstantFP::get(Ty, Val);
|
|
HANDLE(ConstantValue(Result));
|
|
return Result;
|
|
}
|
|
|
|
case Type::TypeTyID:
|
|
PARSE_ERROR("Type constants shouldn't live in constant table!");
|
|
break;
|
|
|
|
case Type::ArrayTyID: {
|
|
const ArrayType *AT = cast<ArrayType>(Ty);
|
|
unsigned NumElements = AT->getNumElements();
|
|
unsigned TypeSlot = getTypeSlot(AT->getElementType());
|
|
std::vector<Constant*> Elements;
|
|
Elements.reserve(NumElements);
|
|
while (NumElements--) // Read all of the elements of the constant.
|
|
Elements.push_back(getConstantValue(TypeSlot,
|
|
read_vbr_uint()));
|
|
Constant* Result = ConstantArray::get(AT, Elements);
|
|
HANDLE(ConstantArray(AT, Elements, TypeSlot, Result));
|
|
return Result;
|
|
}
|
|
|
|
case Type::StructTyID: {
|
|
const StructType *ST = cast<StructType>(Ty);
|
|
|
|
std::vector<Constant *> Elements;
|
|
Elements.reserve(ST->getNumElements());
|
|
for (unsigned i = 0; i != ST->getNumElements(); ++i)
|
|
Elements.push_back(getConstantValue(ST->getElementType(i),
|
|
read_vbr_uint()));
|
|
|
|
Constant* Result = ConstantStruct::get(ST, Elements);
|
|
HANDLE(ConstantStruct(ST, Elements, Result));
|
|
return Result;
|
|
}
|
|
|
|
case Type::PointerTyID: { // ConstantPointerRef value...
|
|
const PointerType *PT = cast<PointerType>(Ty);
|
|
unsigned Slot = read_vbr_uint();
|
|
|
|
// Check to see if we have already read this global variable...
|
|
Value *Val = getValue(TypeID, Slot, false);
|
|
GlobalValue *GV;
|
|
if (Val) {
|
|
if (!(GV = dyn_cast<GlobalValue>(Val)))
|
|
PARSE_ERROR("Value of ConstantPointerRef not in ValueTable!");
|
|
} else {
|
|
PARSE_ERROR("Forward references are not allowed here.");
|
|
}
|
|
|
|
Constant* Result = ConstantPointerRef::get(GV);
|
|
HANDLE(ConstantPointer(PT, Slot, GV, Result));
|
|
return Result;
|
|
}
|
|
|
|
default:
|
|
PARSE_ERROR("Don't know how to deserialize constant value of type '"+
|
|
Ty->getDescription());
|
|
break;
|
|
}
|
|
}
|
|
|
|
void BytecodeReader::ResolveReferencesToConstant(Constant *NewV, unsigned Slot){
|
|
ConstantRefsType::iterator I =
|
|
ConstantFwdRefs.find(std::make_pair(NewV->getType(), Slot));
|
|
if (I == ConstantFwdRefs.end()) return; // Never forward referenced?
|
|
|
|
Value *PH = I->second; // Get the placeholder...
|
|
PH->replaceAllUsesWith(NewV);
|
|
delete PH; // Delete the old placeholder
|
|
ConstantFwdRefs.erase(I); // Remove the map entry for it
|
|
}
|
|
|
|
void BytecodeReader::ParseStringConstants(unsigned NumEntries, ValueTable &Tab){
|
|
for (; NumEntries; --NumEntries) {
|
|
unsigned Typ = read_vbr_uint();
|
|
const Type *Ty = getType(Typ);
|
|
if (!isa<ArrayType>(Ty))
|
|
PARSE_ERROR("String constant data invalid!");
|
|
|
|
const ArrayType *ATy = cast<ArrayType>(Ty);
|
|
if (ATy->getElementType() != Type::SByteTy &&
|
|
ATy->getElementType() != Type::UByteTy)
|
|
PARSE_ERROR("String constant data invalid!");
|
|
|
|
// Read character data. The type tells us how long the string is.
|
|
char Data[ATy->getNumElements()];
|
|
read_data(Data, Data+ATy->getNumElements());
|
|
|
|
std::vector<Constant*> Elements(ATy->getNumElements());
|
|
if (ATy->getElementType() == Type::SByteTy)
|
|
for (unsigned i = 0, e = ATy->getNumElements(); i != e; ++i)
|
|
Elements[i] = ConstantSInt::get(Type::SByteTy, (signed char)Data[i]);
|
|
else
|
|
for (unsigned i = 0, e = ATy->getNumElements(); i != e; ++i)
|
|
Elements[i] = ConstantUInt::get(Type::UByteTy, (unsigned char)Data[i]);
|
|
|
|
// Create the constant, inserting it as needed.
|
|
Constant *C = ConstantArray::get(ATy, Elements);
|
|
unsigned Slot = insertValue(C, Typ, Tab);
|
|
ResolveReferencesToConstant(C, Slot);
|
|
HANDLE(ConstantString(cast<ConstantArray>(C)));
|
|
}
|
|
}
|
|
|
|
void BytecodeReader::ParseConstantPool(ValueTable &Tab,
|
|
TypeListTy &TypeTab) {
|
|
HANDLE(GlobalConstantsBegin());
|
|
while ( moreInBlock() ) {
|
|
unsigned NumEntries = read_vbr_uint();
|
|
unsigned Typ = read_vbr_uint();
|
|
if (Typ == Type::TypeTyID) {
|
|
ParseTypeConstants(TypeTab, NumEntries);
|
|
} else if (Typ == Type::VoidTyID) {
|
|
assert(&Tab == &ModuleValues && "Cannot read strings in functions!");
|
|
ParseStringConstants(NumEntries, Tab);
|
|
} else {
|
|
for (unsigned i = 0; i < NumEntries; ++i) {
|
|
Constant *C = ParseConstantValue(Typ);
|
|
assert(C && "ParseConstantValue returned NULL!");
|
|
unsigned Slot = insertValue(C, Typ, Tab);
|
|
|
|
// If we are reading a function constant table, make sure that we adjust
|
|
// the slot number to be the real global constant number.
|
|
//
|
|
if (&Tab != &ModuleValues && Typ < ModuleValues.size() &&
|
|
ModuleValues[Typ])
|
|
Slot += ModuleValues[Typ]->size();
|
|
ResolveReferencesToConstant(C, Slot);
|
|
}
|
|
}
|
|
}
|
|
checkPastBlockEnd("Constant Pool");
|
|
HANDLE(GlobalConstantsEnd());
|
|
}
|
|
|
|
void BytecodeReader::ParseFunctionBody(Function* F ) {
|
|
|
|
unsigned FuncSize = BlockEnd - At;
|
|
GlobalValue::LinkageTypes Linkage = GlobalValue::ExternalLinkage;
|
|
|
|
unsigned LinkageType = read_vbr_uint();
|
|
switch (LinkageType) {
|
|
case 0: Linkage = GlobalValue::ExternalLinkage; break;
|
|
case 1: Linkage = GlobalValue::WeakLinkage; break;
|
|
case 2: Linkage = GlobalValue::AppendingLinkage; break;
|
|
case 3: Linkage = GlobalValue::InternalLinkage; break;
|
|
case 4: Linkage = GlobalValue::LinkOnceLinkage; break;
|
|
default:
|
|
PARSE_ERROR("Invalid linkage type for Function.");
|
|
Linkage = GlobalValue::InternalLinkage;
|
|
break;
|
|
}
|
|
|
|
F->setLinkage( Linkage );
|
|
HANDLE(FunctionBegin(F,FuncSize));
|
|
|
|
// Keep track of how many basic blocks we have read in...
|
|
unsigned BlockNum = 0;
|
|
bool InsertedArguments = false;
|
|
|
|
BufPtr MyEnd = BlockEnd;
|
|
while ( At < MyEnd ) {
|
|
unsigned Type, Size;
|
|
BufPtr OldAt = At;
|
|
read_block(Type, Size);
|
|
|
|
switch (Type) {
|
|
case BytecodeFormat::ConstantPool:
|
|
if (!InsertedArguments) {
|
|
// Insert arguments into the value table before we parse the first basic
|
|
// block in the function, but after we potentially read in the
|
|
// compaction table.
|
|
insertArguments(F);
|
|
InsertedArguments = true;
|
|
}
|
|
|
|
ParseConstantPool(FunctionValues, FunctionTypes);
|
|
break;
|
|
|
|
case BytecodeFormat::CompactionTable:
|
|
ParseCompactionTable();
|
|
break;
|
|
|
|
case BytecodeFormat::BasicBlock: {
|
|
if (!InsertedArguments) {
|
|
// Insert arguments into the value table before we parse the first basic
|
|
// block in the function, but after we potentially read in the
|
|
// compaction table.
|
|
insertArguments(F);
|
|
InsertedArguments = true;
|
|
}
|
|
|
|
BasicBlock *BB = ParseBasicBlock(BlockNum++);
|
|
F->getBasicBlockList().push_back(BB);
|
|
break;
|
|
}
|
|
|
|
case BytecodeFormat::InstructionList: {
|
|
// Insert arguments into the value table before we parse the instruction
|
|
// list for the function, but after we potentially read in the compaction
|
|
// table.
|
|
if (!InsertedArguments) {
|
|
insertArguments(F);
|
|
InsertedArguments = true;
|
|
}
|
|
|
|
if (BlockNum)
|
|
PARSE_ERROR("Already parsed basic blocks!");
|
|
BlockNum = ParseInstructionList(F);
|
|
break;
|
|
}
|
|
|
|
case BytecodeFormat::SymbolTable:
|
|
ParseSymbolTable(F, &F->getSymbolTable());
|
|
break;
|
|
|
|
default:
|
|
At += Size;
|
|
if (OldAt > At)
|
|
PARSE_ERROR("Wrapped around reading bytecode.");
|
|
break;
|
|
}
|
|
BlockEnd = MyEnd;
|
|
|
|
// Malformed bc file if read past end of block.
|
|
align32();
|
|
}
|
|
|
|
// Make sure there were no references to non-existant basic blocks.
|
|
if (BlockNum != ParsedBasicBlocks.size())
|
|
PARSE_ERROR("Illegal basic block operand reference");
|
|
|
|
ParsedBasicBlocks.clear();
|
|
|
|
// Resolve forward references. Replace any uses of a forward reference value
|
|
// with the real value.
|
|
|
|
// replaceAllUsesWith is very inefficient for instructions which have a LARGE
|
|
// number of operands. PHI nodes often have forward references, and can also
|
|
// often have a very large number of operands.
|
|
//
|
|
// FIXME: REEVALUATE. replaceAllUsesWith is _much_ faster now, and this code
|
|
// should be simplified back to using it!
|
|
//
|
|
std::map<Value*, Value*> ForwardRefMapping;
|
|
for (std::map<std::pair<unsigned,unsigned>, Value*>::iterator
|
|
I = ForwardReferences.begin(), E = ForwardReferences.end();
|
|
I != E; ++I)
|
|
ForwardRefMapping[I->second] = getValue(I->first.first, I->first.second,
|
|
false);
|
|
|
|
for (Function::iterator BB = F->begin(), E = F->end(); BB != E; ++BB)
|
|
for (BasicBlock::iterator I = BB->begin(), E = BB->end(); I != E; ++I)
|
|
for (unsigned i = 0, e = I->getNumOperands(); i != e; ++i)
|
|
if (Argument *A = dyn_cast<Argument>(I->getOperand(i))) {
|
|
std::map<Value*, Value*>::iterator It = ForwardRefMapping.find(A);
|
|
if (It != ForwardRefMapping.end()) I->setOperand(i, It->second);
|
|
}
|
|
|
|
while (!ForwardReferences.empty()) {
|
|
std::map<std::pair<unsigned,unsigned>, Value*>::iterator I =
|
|
ForwardReferences.begin();
|
|
Value *PlaceHolder = I->second;
|
|
ForwardReferences.erase(I);
|
|
|
|
// Now that all the uses are gone, delete the placeholder...
|
|
// If we couldn't find a def (error case), then leak a little
|
|
// memory, because otherwise we can't remove all uses!
|
|
delete PlaceHolder;
|
|
}
|
|
|
|
// Clear out function-level types...
|
|
FunctionTypes.clear();
|
|
CompactionTypes.clear();
|
|
CompactionValues.clear();
|
|
freeTable(FunctionValues);
|
|
|
|
HANDLE(FunctionEnd(F));
|
|
}
|
|
|
|
void BytecodeReader::ParseFunctionLazily() {
|
|
if (FunctionSignatureList.empty())
|
|
PARSE_ERROR("FunctionSignatureList empty!");
|
|
|
|
Function *Func = FunctionSignatureList.back();
|
|
FunctionSignatureList.pop_back();
|
|
|
|
// Save the information for future reading of the function
|
|
LazyFunctionLoadMap[Func] = LazyFunctionInfo(BlockStart, BlockEnd);
|
|
|
|
// Pretend we've `parsed' this function
|
|
At = BlockEnd;
|
|
}
|
|
|
|
void BytecodeReader::ParseFunction(Function* Func) {
|
|
// Find {start, end} pointers and slot in the map. If not there, we're done.
|
|
LazyFunctionMap::iterator Fi = LazyFunctionLoadMap.find(Func);
|
|
|
|
// Make sure we found it
|
|
if ( Fi == LazyFunctionLoadMap.end() ) {
|
|
PARSE_ERROR("Unrecognized function of type " << Func->getType()->getDescription());
|
|
return;
|
|
}
|
|
|
|
BlockStart = At = Fi->second.Buf;
|
|
BlockEnd = Fi->second.EndBuf;
|
|
assert(Fi->first == Func);
|
|
|
|
LazyFunctionLoadMap.erase(Fi);
|
|
|
|
this->ParseFunctionBody( Func );
|
|
}
|
|
|
|
void BytecodeReader::ParseAllFunctionBodies() {
|
|
LazyFunctionMap::iterator Fi = LazyFunctionLoadMap.begin();
|
|
LazyFunctionMap::iterator Fe = LazyFunctionLoadMap.end();
|
|
|
|
while ( Fi != Fe ) {
|
|
Function* Func = Fi->first;
|
|
BlockStart = At = Fi->second.Buf;
|
|
BlockEnd = Fi->second.EndBuf;
|
|
this->ParseFunctionBody(Func);
|
|
++Fi;
|
|
}
|
|
}
|
|
|
|
void BytecodeReader::ParseGlobalTypes() {
|
|
ValueTable T;
|
|
ParseConstantPool(T, ModuleTypes);
|
|
}
|
|
|
|
void BytecodeReader::ParseModuleGlobalInfo() {
|
|
|
|
HANDLE(ModuleGlobalsBegin());
|
|
|
|
// Read global variables...
|
|
unsigned VarType = read_vbr_uint();
|
|
while (VarType != Type::VoidTyID) { // List is terminated by Void
|
|
// VarType Fields: bit0 = isConstant, bit1 = hasInitializer, bit2,3,4 =
|
|
// Linkage, bit4+ = slot#
|
|
unsigned SlotNo = VarType >> 5;
|
|
unsigned LinkageID = (VarType >> 2) & 7;
|
|
bool isConstant = VarType & 1;
|
|
bool hasInitializer = VarType & 2;
|
|
GlobalValue::LinkageTypes Linkage;
|
|
|
|
switch (LinkageID) {
|
|
case 0: Linkage = GlobalValue::ExternalLinkage; break;
|
|
case 1: Linkage = GlobalValue::WeakLinkage; break;
|
|
case 2: Linkage = GlobalValue::AppendingLinkage; break;
|
|
case 3: Linkage = GlobalValue::InternalLinkage; break;
|
|
case 4: Linkage = GlobalValue::LinkOnceLinkage; break;
|
|
default:
|
|
PARSE_ERROR("Unknown linkage type: " << LinkageID);
|
|
Linkage = GlobalValue::InternalLinkage;
|
|
break;
|
|
}
|
|
|
|
const Type *Ty = getType(SlotNo);
|
|
if ( !Ty ) {
|
|
PARSE_ERROR("Global has no type! SlotNo=" << SlotNo);
|
|
}
|
|
|
|
if ( !isa<PointerType>(Ty)) {
|
|
PARSE_ERROR("Global not a pointer type! Ty= " << Ty->getDescription());
|
|
}
|
|
|
|
const Type *ElTy = cast<PointerType>(Ty)->getElementType();
|
|
|
|
// Create the global variable...
|
|
GlobalVariable *GV = new GlobalVariable(ElTy, isConstant, Linkage,
|
|
0, "", TheModule);
|
|
insertValue(GV, SlotNo, ModuleValues);
|
|
|
|
unsigned initSlot = 0;
|
|
if (hasInitializer) {
|
|
initSlot = read_vbr_uint();
|
|
GlobalInits.push_back(std::make_pair(GV, initSlot));
|
|
}
|
|
|
|
// Notify handler about the global value.
|
|
HANDLE(GlobalVariable( ElTy, isConstant, Linkage, SlotNo, initSlot ));
|
|
|
|
// Get next item
|
|
VarType = read_vbr_uint();
|
|
}
|
|
|
|
// Read the function objects for all of the functions that are coming
|
|
unsigned FnSignature = read_vbr_uint();
|
|
while (FnSignature != Type::VoidTyID) { // List is terminated by Void
|
|
const Type *Ty = getType(FnSignature);
|
|
if (!isa<PointerType>(Ty) ||
|
|
!isa<FunctionType>(cast<PointerType>(Ty)->getElementType())) {
|
|
PARSE_ERROR( "Function not a pointer to function type! Ty = " +
|
|
Ty->getDescription());
|
|
// FIXME: what should Ty be if handler continues?
|
|
}
|
|
|
|
// We create functions by passing the underlying FunctionType to create...
|
|
const FunctionType* FTy =
|
|
cast<FunctionType>(cast<PointerType>(Ty)->getElementType());
|
|
|
|
// Insert the place hodler
|
|
Function* Func = new Function(FTy, GlobalValue::InternalLinkage,
|
|
"", TheModule);
|
|
insertValue(Func, FnSignature, ModuleValues);
|
|
|
|
// Save this for later so we know type of lazily instantiated functions
|
|
FunctionSignatureList.push_back(Func);
|
|
|
|
HANDLE(FunctionDeclaration(Func));
|
|
|
|
// Get Next function signature
|
|
FnSignature = read_vbr_uint();
|
|
}
|
|
|
|
if (hasInconsistentModuleGlobalInfo)
|
|
align32();
|
|
|
|
// Now that the function signature list is set up, reverse it so that we can
|
|
// remove elements efficiently from the back of the vector.
|
|
std::reverse(FunctionSignatureList.begin(), FunctionSignatureList.end());
|
|
|
|
// This is for future proofing... in the future extra fields may be added that
|
|
// we don't understand, so we transparently ignore them.
|
|
//
|
|
At = BlockEnd;
|
|
|
|
HANDLE(ModuleGlobalsEnd());
|
|
}
|
|
|
|
void BytecodeReader::ParseVersionInfo() {
|
|
unsigned Version = read_vbr_uint();
|
|
|
|
// Unpack version number: low four bits are for flags, top bits = version
|
|
Module::Endianness Endianness;
|
|
Module::PointerSize PointerSize;
|
|
Endianness = (Version & 1) ? Module::BigEndian : Module::LittleEndian;
|
|
PointerSize = (Version & 2) ? Module::Pointer64 : Module::Pointer32;
|
|
|
|
bool hasNoEndianness = Version & 4;
|
|
bool hasNoPointerSize = Version & 8;
|
|
|
|
RevisionNum = Version >> 4;
|
|
|
|
// Default values for the current bytecode version
|
|
hasInconsistentModuleGlobalInfo = false;
|
|
hasExplicitPrimitiveZeros = false;
|
|
hasRestrictedGEPTypes = false;
|
|
|
|
switch (RevisionNum) {
|
|
case 0: // LLVM 1.0, 1.1 release version
|
|
// Base LLVM 1.0 bytecode format.
|
|
hasInconsistentModuleGlobalInfo = true;
|
|
hasExplicitPrimitiveZeros = true;
|
|
// FALL THROUGH
|
|
case 1: // LLVM 1.2 release version
|
|
// LLVM 1.2 added explicit support for emitting strings efficiently.
|
|
|
|
// Also, it fixed the problem where the size of the ModuleGlobalInfo block
|
|
// included the size for the alignment at the end, where the rest of the
|
|
// blocks did not.
|
|
|
|
// LLVM 1.2 and before required that GEP indices be ubyte constants for
|
|
// structures and longs for sequential types.
|
|
hasRestrictedGEPTypes = true;
|
|
|
|
// FALL THROUGH
|
|
case 2: // LLVM 1.3 release version
|
|
break;
|
|
|
|
default:
|
|
PARSE_ERROR("Unknown bytecode version number: " << RevisionNum);
|
|
}
|
|
|
|
if (hasNoEndianness) Endianness = Module::AnyEndianness;
|
|
if (hasNoPointerSize) PointerSize = Module::AnyPointerSize;
|
|
|
|
HANDLE(VersionInfo(RevisionNum, Endianness, PointerSize ));
|
|
}
|
|
|
|
void BytecodeReader::ParseModule() {
|
|
unsigned Type, Size;
|
|
|
|
FunctionSignatureList.clear(); // Just in case...
|
|
|
|
// Read into instance variables...
|
|
ParseVersionInfo();
|
|
align32(); /// FIXME: Is this redundant? VI is first and 4 bytes!
|
|
|
|
bool SeenModuleGlobalInfo = false;
|
|
bool SeenGlobalTypePlane = false;
|
|
BufPtr MyEnd = BlockEnd;
|
|
while (At < MyEnd) {
|
|
BufPtr OldAt = At;
|
|
read_block(Type, Size);
|
|
|
|
switch (Type) {
|
|
|
|
case BytecodeFormat::GlobalTypePlane:
|
|
if ( SeenGlobalTypePlane )
|
|
PARSE_ERROR("Two GlobalTypePlane Blocks Encountered!");
|
|
|
|
ParseGlobalTypes();
|
|
SeenGlobalTypePlane = true;
|
|
break;
|
|
|
|
case BytecodeFormat::ModuleGlobalInfo:
|
|
if ( SeenModuleGlobalInfo )
|
|
PARSE_ERROR("Two ModuleGlobalInfo Blocks Encountered!");
|
|
ParseModuleGlobalInfo();
|
|
SeenModuleGlobalInfo = true;
|
|
break;
|
|
|
|
case BytecodeFormat::ConstantPool:
|
|
ParseConstantPool(ModuleValues, ModuleTypes);
|
|
break;
|
|
|
|
case BytecodeFormat::Function:
|
|
ParseFunctionLazily();
|
|
break;
|
|
|
|
case BytecodeFormat::SymbolTable:
|
|
ParseSymbolTable(0, &TheModule->getSymbolTable());
|
|
break;
|
|
|
|
default:
|
|
At += Size;
|
|
if (OldAt > At) {
|
|
PARSE_ERROR("Unexpected Block of Type" << Type << "encountered!" );
|
|
}
|
|
break;
|
|
}
|
|
BlockEnd = MyEnd;
|
|
align32();
|
|
}
|
|
|
|
// After the module constant pool has been read, we can safely initialize
|
|
// global variables...
|
|
while (!GlobalInits.empty()) {
|
|
GlobalVariable *GV = GlobalInits.back().first;
|
|
unsigned Slot = GlobalInits.back().second;
|
|
GlobalInits.pop_back();
|
|
|
|
// Look up the initializer value...
|
|
// FIXME: Preserve this type ID!
|
|
|
|
const llvm::PointerType* GVType = GV->getType();
|
|
unsigned TypeSlot = getTypeSlot(GVType->getElementType());
|
|
if (Constant *CV = getConstantValue(TypeSlot, Slot)) {
|
|
if (GV->hasInitializer())
|
|
PARSE_ERROR("Global *already* has an initializer?!");
|
|
HANDLE(GlobalInitializer(GV,CV));
|
|
GV->setInitializer(CV);
|
|
} else
|
|
PARSE_ERROR("Cannot find initializer value.");
|
|
}
|
|
|
|
/// Make sure we pulled them all out. If we didn't then there's a declaration
|
|
/// but a missing body. That's not allowed.
|
|
if (!FunctionSignatureList.empty())
|
|
PARSE_ERROR(
|
|
"Function declared, but bytecode stream ended before definition");
|
|
}
|
|
|
|
void BytecodeReader::ParseBytecode(
|
|
BufPtr Buf, unsigned Length,
|
|
const std::string &ModuleID) {
|
|
|
|
try {
|
|
At = MemStart = BlockStart = Buf;
|
|
MemEnd = BlockEnd = Buf + Length;
|
|
|
|
// Create the module
|
|
TheModule = new Module(ModuleID);
|
|
|
|
HANDLE(Start(TheModule, Length));
|
|
|
|
// Read and check signature...
|
|
unsigned Sig = read_uint();
|
|
if (Sig != ('l' | ('l' << 8) | ('v' << 16) | ('m' << 24))) {
|
|
PARSE_ERROR("Invalid bytecode signature: " << Sig);
|
|
}
|
|
|
|
|
|
// Tell the handler we're starting a module
|
|
HANDLE(ModuleBegin(ModuleID));
|
|
|
|
// Get the module block and size and verify
|
|
unsigned Type, Size;
|
|
read_block(Type, Size);
|
|
if ( Type != BytecodeFormat::Module ) {
|
|
PARSE_ERROR("Expected Module Block! At: " << unsigned(intptr_t(At))
|
|
<< ", Type:" << Type << ", Size:" << Size);
|
|
}
|
|
if ( At + Size != MemEnd ) {
|
|
PARSE_ERROR("Invalid Top Level Block Length! At: "
|
|
<< unsigned(intptr_t(At)) << ", Type:" << Type << ", Size:" << Size);
|
|
}
|
|
|
|
// Parse the module contents
|
|
this->ParseModule();
|
|
|
|
// Tell the handler we're done
|
|
HANDLE(ModuleEnd(ModuleID));
|
|
|
|
// Check for missing functions
|
|
if ( hasFunctions() )
|
|
PARSE_ERROR("Function expected, but bytecode stream ended!");
|
|
|
|
// Tell the handler we're
|
|
HANDLE(Finish());
|
|
|
|
} catch (std::string& errstr ) {
|
|
HANDLE(Error(errstr));
|
|
freeState();
|
|
delete TheModule;
|
|
TheModule = 0;
|
|
throw;
|
|
} catch (...) {
|
|
std::string msg("Unknown Exception Occurred");
|
|
HANDLE(Error(msg));
|
|
freeState();
|
|
delete TheModule;
|
|
TheModule = 0;
|
|
throw msg;
|
|
}
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
//=== Default Implementations of Handler Methods
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
BytecodeHandler::~BytecodeHandler() {}
|
|
void BytecodeHandler::handleError(const std::string& str ) { }
|
|
void BytecodeHandler::handleStart(Module*m, unsigned Length ) { }
|
|
void BytecodeHandler::handleFinish() { }
|
|
void BytecodeHandler::handleModuleBegin(const std::string& id) { }
|
|
void BytecodeHandler::handleModuleEnd(const std::string& id) { }
|
|
void BytecodeHandler::handleVersionInfo( unsigned char RevisionNum,
|
|
Module::Endianness Endianness, Module::PointerSize PointerSize) { }
|
|
void BytecodeHandler::handleModuleGlobalsBegin() { }
|
|
void BytecodeHandler::handleGlobalVariable(
|
|
const Type* ElemType, bool isConstant, GlobalValue::LinkageTypes,
|
|
unsigned SlotNo, unsigned initSlot ) { }
|
|
void BytecodeHandler::handleType( const Type* Ty ) {}
|
|
void BytecodeHandler::handleFunctionDeclaration(
|
|
Function* Func ) {}
|
|
void BytecodeHandler::handleGlobalInitializer(GlobalVariable*, Constant* ) {}
|
|
void BytecodeHandler::handleModuleGlobalsEnd() { }
|
|
void BytecodeHandler::handleCompactionTableBegin() { }
|
|
void BytecodeHandler::handleCompactionTablePlane(
|
|
unsigned Ty, unsigned NumEntries) {}
|
|
void BytecodeHandler::handleCompactionTableType(
|
|
unsigned i, unsigned TypSlot, const Type* ) {}
|
|
void BytecodeHandler::handleCompactionTableValue(
|
|
unsigned i, unsigned TypSlot, unsigned ValSlot, const Type* ) {}
|
|
void BytecodeHandler::handleCompactionTableEnd() { }
|
|
void BytecodeHandler::handleSymbolTableBegin(Function*, SymbolTable*) { }
|
|
void BytecodeHandler::handleSymbolTablePlane( unsigned Ty, unsigned NumEntries,
|
|
const Type* Typ) { }
|
|
void BytecodeHandler::handleSymbolTableType( unsigned i, unsigned slot,
|
|
const std::string& name ) { }
|
|
void BytecodeHandler::handleSymbolTableValue( unsigned i, unsigned slot,
|
|
const std::string& name ) { }
|
|
void BytecodeHandler::handleSymbolTableEnd() { }
|
|
void BytecodeHandler::handleFunctionBegin( Function* Func,
|
|
unsigned Size ) {}
|
|
void BytecodeHandler::handleFunctionEnd( Function* Func) { }
|
|
void BytecodeHandler::handleBasicBlockBegin( unsigned blocknum) { }
|
|
bool BytecodeHandler::handleInstruction( unsigned Opcode, const Type* iType,
|
|
std::vector<unsigned>& Operands, unsigned Size) {
|
|
return Instruction::isTerminator(Opcode);
|
|
}
|
|
void BytecodeHandler::handleBasicBlockEnd(unsigned blocknum) { }
|
|
void BytecodeHandler::handleGlobalConstantsBegin() { }
|
|
void BytecodeHandler::handleConstantExpression( unsigned Opcode,
|
|
std::vector<Constant*> ArgVec, Constant* Val) { }
|
|
void BytecodeHandler::handleConstantValue( Constant * c ) { }
|
|
void BytecodeHandler::handleConstantArray( const ArrayType* AT,
|
|
std::vector<Constant*>& Elements, unsigned TypeSlot, Constant* Val ) { }
|
|
void BytecodeHandler::handleConstantStruct( const StructType* ST,
|
|
std::vector<Constant*>& ElementSlots, Constant* Val ) { }
|
|
void BytecodeHandler::handleConstantPointer(
|
|
const PointerType* PT, unsigned TypeSlot, GlobalValue*, Constant* Val) { }
|
|
void BytecodeHandler::handleConstantString( const ConstantArray* CA ) {}
|
|
void BytecodeHandler::handleGlobalConstantsEnd() {}
|
|
void BytecodeHandler::handleAlignment(unsigned numBytes) {}
|
|
void BytecodeHandler::handleBlock(
|
|
unsigned BType, const unsigned char* StartPtr, unsigned Size) {}
|
|
void BytecodeHandler::handleVBR32(unsigned Size ) {}
|
|
void BytecodeHandler::handleVBR64(unsigned Size ) {}
|
|
|
|
// vim: sw=2
|