-//===- ReadInst.cpp - Code to read an instruction from bytecode -------------===
+//===- ReadInst.cpp - Code to read an instruction from bytecode -----------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file was developed by the LLVM research group and is distributed under
+// the University of Illinois Open Source License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
//
// This file defines the mechanism to read an instruction from a bytecode
// stream.
// Note that this library should be as fast as possible, reentrant, and
// threadsafe!!
//
-// TODO: Change from getValue(Raw.Arg1) etc, to getArg(Raw, 1)
-// Make it check type, so that casts are checked.
-//
-//===------------------------------------------------------------------------===
+//===----------------------------------------------------------------------===//
-#include "llvm/iOther.h"
+#include "ReaderInternals.h"
#include "llvm/iTerminators.h"
#include "llvm/iMemory.h"
-#include "llvm/DerivedTypes.h"
-#include "ReaderInternals.h"
+#include "llvm/iPHINode.h"
+#include "llvm/iOther.h"
+#include "llvm/Module.h"
+using namespace llvm;
-bool BytecodeParser::ParseRawInst(const uchar *&Buf, const uchar *EndBuf,
- RawInst &Result) {
- unsigned Op, Typ;
- if (read(Buf, EndBuf, Op)) return failure(true);
+namespace {
+ struct RawInst { // The raw fields out of the bytecode stream...
+ unsigned NumOperands;
+ unsigned Opcode;
+ unsigned Type;
+
+ RawInst(const unsigned char *&Buf, const unsigned char *EndBuf,
+ std::vector<unsigned> &Args);
+ };
+}
+
+RawInst::RawInst(const unsigned char *&Buf, const unsigned char *EndBuf,
+ std::vector<unsigned> &Args) {
+ unsigned Op = read(Buf, EndBuf);
- Result.NumOperands = Op >> 30;
- Result.Opcode = (Op >> 24) & 63;
+ // bits Instruction format: Common to all formats
+ // --------------------------
+ // 01-00: Opcode type, fixed to 1.
+ // 07-02: Opcode
+ Opcode = (Op >> 2) & 63;
+ Args.resize((Op >> 0) & 03);
- switch (Result.NumOperands) {
+ switch (Args.size()) {
case 1:
- Result.Ty = getType((Op >> 12) & 4095);
- Result.Arg1 = Op & 4095;
- if (Result.Arg1 == 4095) // Handle special encoding for 0 operands...
- Result.NumOperands = 0;
+ // bits Instruction format:
+ // --------------------------
+ // 19-08: Resulting type plane
+ // 31-20: Operand #1 (if set to (2^12-1), then zero operands)
+ //
+ Type = (Op >> 8) & 4095;
+ Args[0] = (Op >> 20) & 4095;
+ if (Args[0] == 4095) // Handle special encoding for 0 operands...
+ Args.resize(0);
break;
case 2:
- Result.Ty = getType((Op >> 16) & 255);
- Result.Arg1 = (Op >> 8 ) & 255;
- Result.Arg2 = (Op >> 0 ) & 255;
+ // bits Instruction format:
+ // --------------------------
+ // 15-08: Resulting type plane
+ // 23-16: Operand #1
+ // 31-24: Operand #2
+ //
+ Type = (Op >> 8) & 255;
+ Args[0] = (Op >> 16) & 255;
+ Args[1] = (Op >> 24) & 255;
break;
case 3:
- Result.Ty = getType((Op >> 18) & 63);
- Result.Arg1 = (Op >> 12) & 63;
- Result.Arg2 = (Op >> 6 ) & 63;
- Result.Arg3 = (Op >> 0 ) & 63;
+ // bits Instruction format:
+ // --------------------------
+ // 13-08: Resulting type plane
+ // 19-14: Operand #1
+ // 25-20: Operand #2
+ // 31-26: Operand #3
+ //
+ Type = (Op >> 8) & 63;
+ Args[0] = (Op >> 14) & 63;
+ Args[1] = (Op >> 20) & 63;
+ Args[2] = (Op >> 26) & 63;
break;
case 0:
Buf -= 4; // Hrm, try this again...
- if (read_vbr(Buf, EndBuf, Result.Opcode)) return failure(true);
- if (read_vbr(Buf, EndBuf, Typ)) return failure(true);
- Result.Ty = getType(Typ);
- if (read_vbr(Buf, EndBuf, Result.NumOperands)) return failure(true);
-
- switch (Result.NumOperands) {
- case 0:
- cerr << "Zero Arg instr found!\n";
- return failure(true); // This encoding is invalid!
- case 1:
- if (read_vbr(Buf, EndBuf, Result.Arg1)) return failure(true);
- break;
- case 2:
- if (read_vbr(Buf, EndBuf, Result.Arg1) ||
- read_vbr(Buf, EndBuf, Result.Arg2)) return failure(true);
- break;
- case 3:
- if (read_vbr(Buf, EndBuf, Result.Arg1) ||
- read_vbr(Buf, EndBuf, Result.Arg2) ||
- read_vbr(Buf, EndBuf, Result.Arg3)) return failure(true);
- break;
- default:
- if (read_vbr(Buf, EndBuf, Result.Arg1) ||
- read_vbr(Buf, EndBuf, Result.Arg2)) return failure(true);
-
- // Allocate a vector to hold arguments 3, 4, 5, 6 ...
- Result.VarArgs = new vector<unsigned>(Result.NumOperands-2);
- for (unsigned a = 0; a < Result.NumOperands-2; a++)
- if (read_vbr(Buf, EndBuf, (*Result.VarArgs)[a])) return failure(true);
- break;
- }
- if (align32(Buf, EndBuf)) return failure(true);
+ Opcode = read_vbr_uint(Buf, EndBuf);
+ Opcode >>= 2;
+ Type = read_vbr_uint(Buf, EndBuf);
+
+ unsigned NumOperands = read_vbr_uint(Buf, EndBuf);
+ Args.resize(NumOperands);
+
+ if (NumOperands == 0)
+ throw std::string("Zero-argument instruction found; this is invalid.");
+
+ for (unsigned i = 0; i != NumOperands; ++i)
+ Args[i] = read_vbr_uint(Buf, EndBuf);
+ align32(Buf, EndBuf);
break;
}
-
-#if 0
- cerr << "NO: " << Result.NumOperands << " opcode: " << Result.Opcode
- << " Ty: " << Result.Ty->getDescription() << " arg1: " << Result.Arg1
- << " arg2: " << Result.Arg2 << " arg3: " << Result.Arg3 << endl;
-#endif
- return false;
}
-bool BytecodeParser::ParseInstruction(const uchar *&Buf, const uchar *EndBuf,
- Instruction *&Res) {
- RawInst Raw;
- if (ParseRawInst(Buf, EndBuf, Raw)) return failure(true);
-
- if (Raw.Opcode >= Instruction::FirstUnaryOp &&
- Raw.Opcode < Instruction::NumUnaryOps && Raw.NumOperands == 1) {
- Res = UnaryOperator::create((Instruction::UnaryOps)Raw.Opcode,
- getValue(Raw.Ty,Raw.Arg1));
- return false;
- } else if (Raw.Opcode >= Instruction::FirstBinaryOp &&
- Raw.Opcode < Instruction::NumBinaryOps && Raw.NumOperands == 2) {
- Res = BinaryOperator::create((Instruction::BinaryOps)Raw.Opcode,
- getValue(Raw.Ty, Raw.Arg1),
- getValue(Raw.Ty, Raw.Arg2));
- return false;
- }
-
- Value *V;
- switch (Raw.Opcode) {
- case Instruction::Cast:
- Res = new CastInst(getValue(Raw.Ty, Raw.Arg1), getType(Raw.Arg2));
- return false;
-
- case Instruction::PHINode: {
- PHINode *PN = new PHINode(Raw.Ty);
- switch (Raw.NumOperands) {
- case 0:
- case 1:
- case 3: cerr << "Invalid phi node encountered!\n";
- delete PN;
- return failure(true);
- case 2: PN->addIncoming(getValue(Raw.Ty, Raw.Arg1),
- (BasicBlock*)getValue(Type::LabelTy, Raw.Arg2));
- break;
- default:
- PN->addIncoming(getValue(Raw.Ty, Raw.Arg1),
- (BasicBlock*)getValue(Type::LabelTy, Raw.Arg2));
- if (Raw.VarArgs->size() & 1) {
- cerr << "PHI Node with ODD number of arguments!\n";
- delete PN;
- return failure(true);
- } else {
- vector<unsigned> &args = *Raw.VarArgs;
- for (unsigned i = 0; i < args.size(); i+=2)
- PN->addIncoming(getValue(Raw.Ty, args[i]),
- (BasicBlock*)getValue(Type::LabelTy, args[i+1]));
+void BytecodeParser::ParseInstruction(const unsigned char *&Buf,
+ const unsigned char *EndBuf,
+ std::vector<unsigned> &Args,
+ BasicBlock *BB) {
+ Args.clear();
+ RawInst RI(Buf, EndBuf, Args);
+ const Type *InstTy = getType(RI.Type);
+
+ Instruction *Result = 0;
+ if (RI.Opcode >= Instruction::BinaryOpsBegin &&
+ RI.Opcode < Instruction::BinaryOpsEnd && Args.size() == 2)
+ Result = BinaryOperator::create((Instruction::BinaryOps)RI.Opcode,
+ getValue(RI.Type, Args[0]),
+ getValue(RI.Type, Args[1]));
+
+ switch (RI.Opcode) {
+ default:
+ if (Result == 0) throw std::string("Illegal instruction read!");
+ break;
+ case Instruction::VAArg:
+ Result = new VAArgInst(getValue(RI.Type, Args[0]), getType(Args[1]));
+ break;
+ case Instruction::VANext:
+ if (!hasOldStyleVarargs) {
+ Result = new VANextInst(getValue(RI.Type, Args[0]), getType(Args[1]));
+ } else {
+ // In the old-style varargs scheme, this was the "va_arg" instruction.
+ // Emit emulation code now.
+ if (!usesOldStyleVarargs) {
+ usesOldStyleVarargs = true;
+ std::cerr << "WARNING: this bytecode file uses obsolete features. "
+ << "Disassemble and assemble to update it.\n";
}
- delete Raw.VarArgs;
- break;
+
+ Value *VAListPtr = getValue(RI.Type, Args[0]);
+ const Type *ArgTy = getType(Args[1]);
+
+ // First, load the valist...
+ Instruction *CurVAList = new LoadInst(VAListPtr, "");
+ BB->getInstList().push_back(CurVAList);
+
+ // Construct the vaarg
+ Result = new VAArgInst(CurVAList, ArgTy);
+
+ // Now we must advance the pointer and update it in memory.
+ Instruction *TheVANext = new VANextInst(CurVAList, ArgTy);
+ BB->getInstList().push_back(TheVANext);
+
+ BB->getInstList().push_back(new StoreInst(TheVANext, VAListPtr));
}
- Res = PN;
- return false;
+
+ break;
+ case Instruction::Cast:
+ Result = new CastInst(getValue(RI.Type, Args[0]), getType(Args[1]));
+ break;
+ case Instruction::PHI: {
+ if (Args.size() == 0 || (Args.size() & 1))
+ throw std::string("Invalid phi node encountered!\n");
+
+ PHINode *PN = new PHINode(InstTy);
+ PN->op_reserve(Args.size());
+ for (unsigned i = 0, e = Args.size(); i != e; i += 2)
+ PN->addIncoming(getValue(RI.Type, Args[i]), getBasicBlock(Args[i+1]));
+ Result = PN;
+ break;
}
case Instruction::Shl:
case Instruction::Shr:
- Res = new ShiftInst((Instruction::OtherOps)Raw.Opcode,
- getValue(Raw.Ty, Raw.Arg1),
- getValue(Type::UByteTy, Raw.Arg2));
- return false;
+ Result = new ShiftInst((Instruction::OtherOps)RI.Opcode,
+ getValue(RI.Type, Args[0]),
+ getValue(Type::UByteTyID, Args[1]));
+ break;
case Instruction::Ret:
- if (Raw.NumOperands == 0) {
- Res = new ReturnInst(); return false;
- } else if (Raw.NumOperands == 1) {
- Res = new ReturnInst(getValue(Raw.Ty, Raw.Arg1)); return false;
- }
+ if (Args.size() == 0)
+ Result = new ReturnInst();
+ else if (Args.size() == 1)
+ Result = new ReturnInst(getValue(RI.Type, Args[0]));
+ else
+ throw std::string("Unrecognized instruction!");
break;
case Instruction::Br:
- if (Raw.NumOperands == 1) {
- Res = new BranchInst((BasicBlock*)getValue(Type::LabelTy, Raw.Arg1));
- return false;
- } else if (Raw.NumOperands == 3) {
- Res = new BranchInst((BasicBlock*)getValue(Type::LabelTy, Raw.Arg1),
- (BasicBlock*)getValue(Type::LabelTy, Raw.Arg2),
- getValue(Type::BoolTy , Raw.Arg3));
- return false;
- }
+ if (Args.size() == 1)
+ Result = new BranchInst(getBasicBlock(Args[0]));
+ else if (Args.size() == 3)
+ Result = new BranchInst(getBasicBlock(Args[0]), getBasicBlock(Args[1]),
+ getValue(Type::BoolTyID , Args[2]));
+ else
+ throw std::string("Invalid number of operands for a 'br' instruction!");
break;
-
case Instruction::Switch: {
- SwitchInst *I =
- new SwitchInst(getValue(Raw.Ty, Raw.Arg1),
- (BasicBlock*)getValue(Type::LabelTy, Raw.Arg2));
- Res = I;
- if (Raw.NumOperands < 3) return false; // No destinations? Wierd.
-
- if (Raw.NumOperands == 3 || Raw.VarArgs->size() & 1) {
- cerr << "Switch statement with odd number of arguments!\n";
- delete I;
- return failure(true);
- }
-
- vector<unsigned> &args = *Raw.VarArgs;
- for (unsigned i = 0; i < args.size(); i += 2)
- I->dest_push_back((ConstPoolVal*)getValue(Raw.Ty, args[i]),
- (BasicBlock*)getValue(Type::LabelTy, args[i+1]));
+ if (Args.size() & 1)
+ throw std::string("Switch statement with odd number of arguments!");
- delete Raw.VarArgs;
- return false;
+ SwitchInst *I = new SwitchInst(getValue(RI.Type, Args[0]),
+ getBasicBlock(Args[1]));
+ for (unsigned i = 2, e = Args.size(); i != e; i += 2)
+ I->addCase(cast<Constant>(getValue(RI.Type, Args[i])),
+ getBasicBlock(Args[i+1]));
+ Result = I;
+ break;
}
case Instruction::Call: {
- Method *M = (Method*)getValue(Raw.Ty, Raw.Arg1);
- if (M == 0) return failure(true);
-
- vector<Value *> Params;
- const MethodType::ParamTypes &PL = M->getType()->getParamTypes();
-
- if (!M->getType()->isVarArg()) {
- MethodType::ParamTypes::const_iterator It = PL.begin();
-
- switch (Raw.NumOperands) {
- case 0: cerr << "Invalid call instruction encountered!\n";
- return failure(true);
- case 1: break;
- case 2: Params.push_back(getValue(*It++, Raw.Arg2)); break;
- case 3: Params.push_back(getValue(*It++, Raw.Arg2));
- if (It == PL.end()) return failure(true);
- Params.push_back(getValue(*It++, Raw.Arg3)); break;
- default:
- Params.push_back(getValue(*It++, Raw.Arg2));
- {
- vector<unsigned> &args = *Raw.VarArgs;
- for (unsigned i = 0; i < args.size(); i++) {
- if (It == PL.end()) return failure(true);
- // TODO: Check getValue for null!
- Params.push_back(getValue(*It++, args[i]));
- }
- }
- delete Raw.VarArgs;
+ if (Args.size() == 0)
+ throw std::string("Invalid call instruction encountered!");
+
+ Value *F = getValue(RI.Type, Args[0]);
+
+ // Check to make sure we have a pointer to function type
+ const PointerType *PTy = dyn_cast<PointerType>(F->getType());
+ if (PTy == 0) throw std::string("Call to non function pointer value!");
+ const FunctionType *FTy = dyn_cast<FunctionType>(PTy->getElementType());
+ if (FTy == 0) throw std::string("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 = Args.size(); i != e; ++i) {
+ if (It == FTy->param_end())
+ throw std::string("Invalid call instruction!");
+ Params.push_back(getValue(getTypeSlot(*It++), Args[i]));
}
- if (It != PL.end()) return failure(true);
+ if (It != FTy->param_end())
+ throw std::string("Invalid call instruction!");
} else {
- // The first parameter does not have a type specifier... because there
- // must be at least one concrete argument to a vararg type...
- Params.push_back(getValue(PL.front(), Raw.Arg2));
-
- vector<unsigned> &args = *Raw.VarArgs;
- if ((args.size() & 1) != 0)
- return failure(true); // Must be pairs of type/value
- for (unsigned i = 0; i < args.size(); i+=2) {
- // TODO: Check getValue for null!
- Params.push_back(getValue(getType(args[i]), args[i+1]));
+ Args.erase(Args.begin(), Args.begin()+1+hasVarArgCallPadding);
+
+ unsigned FirstVariableOperand;
+ if (!hasVarArgCallPadding) {
+ if (Args.size() < FTy->getNumParams())
+ throw std::string("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)),Args[i]));
+
+ FirstVariableOperand = FTy->getNumParams();
+ } else {
+ FirstVariableOperand = 0;
}
- delete Raw.VarArgs;
+
+ if ((Args.size()-FirstVariableOperand) & 1) // Must be pairs of type/value
+ throw std::string("Invalid call instruction!");
+
+ for (unsigned i = FirstVariableOperand, e = Args.size(); i != e; i += 2)
+ Params.push_back(getValue(Args[i], Args[i+1]));
}
- Res = new CallInst(M, Params);
- return false;
+ Result = new CallInst(F, Params);
+ break;
+ }
+ case Instruction::Invoke: {
+ if (Args.size() < 3) throw std::string("Invalid invoke instruction!");
+ Value *F = getValue(RI.Type, Args[0]);
+
+ // Check to make sure we have a pointer to function type
+ const PointerType *PTy = dyn_cast<PointerType>(F->getType());
+ if (PTy == 0) throw std::string("Invoke to non function pointer value!");
+ const FunctionType *FTy = dyn_cast<FunctionType>(PTy->getElementType());
+ if (FTy == 0) throw std::string("Invoke to non function pointer value!");
+
+ std::vector<Value *> Params;
+ BasicBlock *Normal, *Except;
+
+ if (!FTy->isVarArg()) {
+ Normal = getBasicBlock(Args[1]);
+ Except = getBasicBlock(Args[2]);
+
+ FunctionType::param_iterator It = FTy->param_begin();
+ for (unsigned i = 3, e = Args.size(); i != e; ++i) {
+ if (It == FTy->param_end())
+ throw std::string("Invalid invoke instruction!");
+ Params.push_back(getValue(getTypeSlot(*It++), Args[i]));
+ }
+ if (It != FTy->param_end())
+ throw std::string("Invalid invoke instruction!");
+ } else {
+ Args.erase(Args.begin(), Args.begin()+1+hasVarArgCallPadding);
+
+ unsigned FirstVariableArgument;
+ if (!hasVarArgCallPadding) {
+ Normal = getBasicBlock(Args[0]);
+ Except = getBasicBlock(Args[1]);
+
+ FirstVariableArgument = FTy->getNumParams()+2;
+ for (unsigned i = 2; i != FirstVariableArgument; ++i)
+ Params.push_back(getValue(getTypeSlot(FTy->getParamType(i-2)),
+ Args[i]));
+
+ } else {
+ if (Args.size() < 4) throw std::string("Invalid invoke instruction!");
+ if (Args[0] != Type::LabelTyID || Args[2] != Type::LabelTyID)
+ throw std::string("Invalid invoke instruction!");
+ Normal = getBasicBlock(Args[1]);
+ Except = getBasicBlock(Args[3]);
+
+ FirstVariableArgument = 4;
+ }
+
+ if (Args.size()-FirstVariableArgument & 1) // Must be pairs of type/value
+ throw std::string("Invalid invoke instruction!");
+
+ for (unsigned i = FirstVariableArgument; i < Args.size(); i += 2)
+ Params.push_back(getValue(Args[i], Args[i+1]));
+ }
+
+ Result = new InvokeInst(F, Normal, Except, Params);
+ break;
}
case Instruction::Malloc:
- if (Raw.NumOperands > 2) return failure(true);
- V = Raw.NumOperands ? getValue(Type::UIntTy, Raw.Arg1) : 0;
- Res = new MallocInst(Raw.Ty, V);
- return false;
+ if (Args.size() > 2) throw std::string("Invalid malloc instruction!");
+ if (!isa<PointerType>(InstTy))
+ throw std::string("Invalid malloc instruction!");
+
+ Result = new MallocInst(cast<PointerType>(InstTy)->getElementType(),
+ Args.size() ? getValue(Type::UIntTyID,
+ Args[0]) : 0);
+ break;
case Instruction::Alloca:
- if (Raw.NumOperands > 2) return failure(true);
- V = Raw.NumOperands ? getValue(Type::UIntTy, Raw.Arg1) : 0;
- Res = new AllocaInst(Raw.Ty, V);
- return false;
+ if (Args.size() > 2) throw std::string("Invalid alloca instruction!");
+ if (!isa<PointerType>(InstTy))
+ throw std::string("Invalid alloca instruction!");
+ Result = new AllocaInst(cast<PointerType>(InstTy)->getElementType(),
+ Args.size() ? getValue(Type::UIntTyID, Args[0]) :0);
+ break;
case Instruction::Free:
- V = getValue(Raw.Ty, Raw.Arg1);
- if (!V->getType()->isPointerType()) return failure(true);
- Res = new FreeInst(V);
- return false;
-
- case Instruction::Load:
+ if (!isa<PointerType>(InstTy))
+ throw std::string("Invalid free instruction!");
+ Result = new FreeInst(getValue(RI.Type, Args[0]));
+ break;
case Instruction::GetElementPtr: {
- vector<ConstPoolVal*> Idx;
- switch (Raw.NumOperands) {
- case 0: cerr << "Invalid load encountered!\n"; return failure(true);
- case 1: break;
- case 2: V = getValue(Type::UByteTy, Raw.Arg2);
- if (!isa<ConstPoolVal>(V)) return failure(true);
- Idx.push_back(cast<ConstPoolVal>(V));
- break;
- case 3: V = getValue(Type::UByteTy, Raw.Arg2);
- if (!isa<ConstPoolVal>(V)) return failure(true);
- Idx.push_back(cast<ConstPoolVal>(V));
- V = getValue(Type::UByteTy, Raw.Arg3);
- if (!isa<ConstPoolVal>(V)) return failure(true);
- Idx.push_back(cast<ConstPoolVal>(V));
- break;
- default:
- V = getValue(Type::UByteTy, Raw.Arg2);
- if (!isa<ConstPoolVal>(V)) return failure(true);
- Idx.push_back(cast<ConstPoolVal>(V));
- vector<unsigned> &args = *Raw.VarArgs;
- for (unsigned i = 0, E = args.size(); i != E; ++i) {
- V = getValue(Type::UByteTy, args[i]);
- if (!isa<ConstPoolVal>(V)) return failure(true);
- Idx.push_back(cast<ConstPoolVal>(V));
- }
- delete Raw.VarArgs;
- break;
+ if (Args.size() == 0 || !isa<PointerType>(InstTy))
+ throw std::string("Invalid getelementptr instruction!");
+
+ std::vector<Value*> Idx;
+
+ const Type *NextTy = InstTy;
+ for (unsigned i = 1, e = Args.size(); i != e; ++i) {
+ const CompositeType *TopTy = dyn_cast_or_null<CompositeType>(NextTy);
+ if (!TopTy) throw std::string("Invalid getelementptr instruction!");
+ // FIXME: when PR82 is resolved.
+ unsigned IdxTy = isa<StructType>(TopTy) ? Type::UByteTyID :Type::LongTyID;
+
+ Idx.push_back(getValue(IdxTy, Args[i]));
+ NextTy = GetElementPtrInst::getIndexedType(InstTy, Idx, true);
}
- if (Raw.Opcode == Instruction::Load)
- Res = new LoadInst(getValue(Raw.Ty, Raw.Arg1), Idx);
- else if (Raw.Opcode == Instruction::GetElementPtr)
- Res = new GetElementPtrInst(getValue(Raw.Ty, Raw.Arg1), Idx);
- else
- abort();
- return false;
+
+ Result = new GetElementPtrInst(getValue(RI.Type, Args[0]), Idx);
+ break;
}
+
+ case 62: // volatile load
+ case Instruction::Load:
+ if (Args.size() != 1 || !isa<PointerType>(InstTy))
+ throw std::string("Invalid load instruction!");
+ Result = new LoadInst(getValue(RI.Type, Args[0]), "", RI.Opcode == 62);
+ break;
+
+ case 63: // volatile store
case Instruction::Store: {
- vector<ConstPoolVal*> Idx;
- switch (Raw.NumOperands) {
- case 0:
- case 1: cerr << "Invalid store encountered!\n"; return failure(true);
- case 2: break;
- case 3: V = getValue(Type::UByteTy, Raw.Arg3);
- if (!isa<ConstPoolVal>(V)) return failure(true);
- Idx.push_back(cast<ConstPoolVal>(V));
- break;
- default:
- vector<unsigned> &args = *Raw.VarArgs;
- for (unsigned i = 0, E = args.size(); i != E; ++i) {
- V = getValue(Type::UByteTy, args[i]);
- if (!isa<ConstPoolVal>(V)) return failure(true);
- Idx.push_back(cast<ConstPoolVal>(V));
- }
- delete Raw.VarArgs;
- break;
- }
+ if (!isa<PointerType>(InstTy) || Args.size() != 2)
+ throw std::string("Invalid store instruction!");
- const Type *ElType = StoreInst::getIndexedType(Raw.Ty, Idx);
- if (ElType == 0) return failure(true);
- Res = new StoreInst(getValue(ElType, Raw.Arg1), getValue(Raw.Ty, Raw.Arg2),
- Idx);
- return false;
+ Value *Ptr = getValue(RI.Type, Args[1]);
+ const Type *ValTy = cast<PointerType>(Ptr->getType())->getElementType();
+ Result = new StoreInst(getValue(getTypeSlot(ValTy), Args[0]), Ptr,
+ RI.Opcode == 63);
+ break;
}
- } // end switch(Raw.Opcode)
+ case Instruction::Unwind:
+ if (Args.size() != 0) throw std::string("Invalid unwind instruction!");
+ Result = new UnwindInst();
+ break;
+ } // end switch(RI.Opcode)
+
+ unsigned TypeSlot;
+ if (Result->getType() == InstTy)
+ TypeSlot = RI.Type;
+ else
+ TypeSlot = getTypeSlot(Result->getType());
- cerr << "Unrecognized instruction! " << Raw.Opcode
- << " ADDR = 0x" << (void*)Buf << endl;
- return failure(true);
+ insertValue(Result, TypeSlot, Values);
+ BB->getInstList().push_back(Result);
+ BCR_TRACE(4, *Result);
}
projects / oota-llvm.git / blobdiff