X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;ds=sidebyside;f=lib%2FExecutionEngine%2FInterpreter%2FExecution.cpp;h=a2aad5ac556ad988f9b2453f07c94c46aae01c72;hb=fb70e7deafbdce88882735ec8f658e710d65e8cc;hp=4a0c58906a5f389a9a257778647870084b1a2f8b;hpb=7553c341354c7790cebda40ea0d647f9d204544b;p=oota-llvm.git diff --git a/lib/ExecutionEngine/Interpreter/Execution.cpp b/lib/ExecutionEngine/Interpreter/Execution.cpp index 4a0c58906a5..a2aad5ac556 100644 --- a/lib/ExecutionEngine/Interpreter/Execution.cpp +++ b/lib/ExecutionEngine/Interpreter/Execution.cpp @@ -2,8 +2,8 @@ // // 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 is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. // //===----------------------------------------------------------------------===// // @@ -20,35 +20,27 @@ #include "llvm/Support/GetElementPtrTypeIterator.h" #include "llvm/ADT/APInt.h" #include "llvm/ADT/Statistic.h" +#include "llvm/Support/CommandLine.h" #include "llvm/Support/Debug.h" +#include "llvm/Support/ErrorHandling.h" #include "llvm/Support/MathExtras.h" +#include #include using namespace llvm; STATISTIC(NumDynamicInsts, "Number of dynamic instructions executed"); -static Interpreter *TheEE = 0; + +static cl::opt PrintVolatile("interpreter-print-volatile", cl::Hidden, + cl::desc("make the interpreter print every volatile load and store")); //===----------------------------------------------------------------------===// // Various Helper Functions //===----------------------------------------------------------------------===// -static inline uint64_t doSignExtension(uint64_t Val, const IntegerType* ITy) { - // Determine if the value is signed or not - bool isSigned = (Val & (1 << (ITy->getBitWidth()-1))) != 0; - // If its signed, extend the sign bits - if (isSigned) - Val |= ~ITy->getBitMask(); - return Val; -} - static void SetValue(Value *V, GenericValue Val, ExecutionContext &SF) { SF.Values[V] = Val; } -void Interpreter::initializeExecutionEngine() { - TheEE = this; -} - //===----------------------------------------------------------------------===// // Binary Instruction Implementations //===----------------------------------------------------------------------===// @@ -58,46 +50,36 @@ void Interpreter::initializeExecutionEngine() { Dest.TY##Val = Src1.TY##Val OP Src2.TY##Val; \ break -#define IMPLEMENT_INTEGER_BINOP1(OP, TY) \ - case Type::IntegerTyID: { \ - Dest.IntVal = Src1.IntVal OP Src2.IntVal; \ - break; \ - } - - -static void executeAddInst(GenericValue &Dest, GenericValue Src1, - GenericValue Src2, const Type *Ty) { +static void executeFAddInst(GenericValue &Dest, GenericValue Src1, + GenericValue Src2, const Type *Ty) { switch (Ty->getTypeID()) { - IMPLEMENT_INTEGER_BINOP1(+, Ty); IMPLEMENT_BINARY_OPERATOR(+, Float); IMPLEMENT_BINARY_OPERATOR(+, Double); default: - cerr << "Unhandled type for Add instruction: " << *Ty << "\n"; - abort(); + dbgs() << "Unhandled type for FAdd instruction: " << *Ty << "\n"; + llvm_unreachable(0); } } -static void executeSubInst(GenericValue &Dest, GenericValue Src1, - GenericValue Src2, const Type *Ty) { +static void executeFSubInst(GenericValue &Dest, GenericValue Src1, + GenericValue Src2, const Type *Ty) { switch (Ty->getTypeID()) { - IMPLEMENT_INTEGER_BINOP1(-, Ty); IMPLEMENT_BINARY_OPERATOR(-, Float); IMPLEMENT_BINARY_OPERATOR(-, Double); default: - cerr << "Unhandled type for Sub instruction: " << *Ty << "\n"; - abort(); + dbgs() << "Unhandled type for FSub instruction: " << *Ty << "\n"; + llvm_unreachable(0); } } -static void executeMulInst(GenericValue &Dest, GenericValue Src1, - GenericValue Src2, const Type *Ty) { +static void executeFMulInst(GenericValue &Dest, GenericValue Src1, + GenericValue Src2, const Type *Ty) { switch (Ty->getTypeID()) { - IMPLEMENT_INTEGER_BINOP1(*, Ty); IMPLEMENT_BINARY_OPERATOR(*, Float); IMPLEMENT_BINARY_OPERATOR(*, Double); default: - cerr << "Unhandled type for Mul instruction: " << *Ty << "\n"; - abort(); + dbgs() << "Unhandled type for FMul instruction: " << *Ty << "\n"; + llvm_unreachable(0); } } @@ -107,8 +89,8 @@ static void executeFDivInst(GenericValue &Dest, GenericValue Src1, IMPLEMENT_BINARY_OPERATOR(/, Float); IMPLEMENT_BINARY_OPERATOR(/, Double); default: - cerr << "Unhandled type for FDiv instruction: " << *Ty << "\n"; - abort(); + dbgs() << "Unhandled type for FDiv instruction: " << *Ty << "\n"; + llvm_unreachable(0); } } @@ -122,8 +104,8 @@ static void executeFRemInst(GenericValue &Dest, GenericValue Src1, Dest.DoubleVal = fmod(Src1.DoubleVal, Src2.DoubleVal); break; default: - cerr << "Unhandled type for Rem instruction: " << *Ty << "\n"; - abort(); + dbgs() << "Unhandled type for Rem instruction: " << *Ty << "\n"; + llvm_unreachable(0); } } @@ -149,8 +131,8 @@ static GenericValue executeICMP_EQ(GenericValue Src1, GenericValue Src2, IMPLEMENT_INTEGER_ICMP(eq,Ty); IMPLEMENT_POINTER_ICMP(==); default: - cerr << "Unhandled type for ICMP_EQ predicate: " << *Ty << "\n"; - abort(); + dbgs() << "Unhandled type for ICMP_EQ predicate: " << *Ty << "\n"; + llvm_unreachable(0); } return Dest; } @@ -162,8 +144,8 @@ static GenericValue executeICMP_NE(GenericValue Src1, GenericValue Src2, IMPLEMENT_INTEGER_ICMP(ne,Ty); IMPLEMENT_POINTER_ICMP(!=); default: - cerr << "Unhandled type for ICMP_NE predicate: " << *Ty << "\n"; - abort(); + dbgs() << "Unhandled type for ICMP_NE predicate: " << *Ty << "\n"; + llvm_unreachable(0); } return Dest; } @@ -175,8 +157,8 @@ static GenericValue executeICMP_ULT(GenericValue Src1, GenericValue Src2, IMPLEMENT_INTEGER_ICMP(ult,Ty); IMPLEMENT_POINTER_ICMP(<); default: - cerr << "Unhandled type for ICMP_ULT predicate: " << *Ty << "\n"; - abort(); + dbgs() << "Unhandled type for ICMP_ULT predicate: " << *Ty << "\n"; + llvm_unreachable(0); } return Dest; } @@ -188,8 +170,8 @@ static GenericValue executeICMP_SLT(GenericValue Src1, GenericValue Src2, IMPLEMENT_INTEGER_ICMP(slt,Ty); IMPLEMENT_POINTER_ICMP(<); default: - cerr << "Unhandled type for ICMP_SLT predicate: " << *Ty << "\n"; - abort(); + dbgs() << "Unhandled type for ICMP_SLT predicate: " << *Ty << "\n"; + llvm_unreachable(0); } return Dest; } @@ -201,8 +183,8 @@ static GenericValue executeICMP_UGT(GenericValue Src1, GenericValue Src2, IMPLEMENT_INTEGER_ICMP(ugt,Ty); IMPLEMENT_POINTER_ICMP(>); default: - cerr << "Unhandled type for ICMP_UGT predicate: " << *Ty << "\n"; - abort(); + dbgs() << "Unhandled type for ICMP_UGT predicate: " << *Ty << "\n"; + llvm_unreachable(0); } return Dest; } @@ -214,8 +196,8 @@ static GenericValue executeICMP_SGT(GenericValue Src1, GenericValue Src2, IMPLEMENT_INTEGER_ICMP(sgt,Ty); IMPLEMENT_POINTER_ICMP(>); default: - cerr << "Unhandled type for ICMP_SGT predicate: " << *Ty << "\n"; - abort(); + dbgs() << "Unhandled type for ICMP_SGT predicate: " << *Ty << "\n"; + llvm_unreachable(0); } return Dest; } @@ -227,8 +209,8 @@ static GenericValue executeICMP_ULE(GenericValue Src1, GenericValue Src2, IMPLEMENT_INTEGER_ICMP(ule,Ty); IMPLEMENT_POINTER_ICMP(<=); default: - cerr << "Unhandled type for ICMP_ULE predicate: " << *Ty << "\n"; - abort(); + dbgs() << "Unhandled type for ICMP_ULE predicate: " << *Ty << "\n"; + llvm_unreachable(0); } return Dest; } @@ -240,8 +222,8 @@ static GenericValue executeICMP_SLE(GenericValue Src1, GenericValue Src2, IMPLEMENT_INTEGER_ICMP(sle,Ty); IMPLEMENT_POINTER_ICMP(<=); default: - cerr << "Unhandled type for ICMP_SLE predicate: " << *Ty << "\n"; - abort(); + dbgs() << "Unhandled type for ICMP_SLE predicate: " << *Ty << "\n"; + llvm_unreachable(0); } return Dest; } @@ -253,8 +235,8 @@ static GenericValue executeICMP_UGE(GenericValue Src1, GenericValue Src2, IMPLEMENT_INTEGER_ICMP(uge,Ty); IMPLEMENT_POINTER_ICMP(>=); default: - cerr << "Unhandled type for ICMP_UGE predicate: " << *Ty << "\n"; - abort(); + dbgs() << "Unhandled type for ICMP_UGE predicate: " << *Ty << "\n"; + llvm_unreachable(0); } return Dest; } @@ -266,8 +248,8 @@ static GenericValue executeICMP_SGE(GenericValue Src1, GenericValue Src2, IMPLEMENT_INTEGER_ICMP(sge,Ty); IMPLEMENT_POINTER_ICMP(>=); default: - cerr << "Unhandled type for ICMP_SGE predicate: " << *Ty << "\n"; - abort(); + dbgs() << "Unhandled type for ICMP_SGE predicate: " << *Ty << "\n"; + llvm_unreachable(0); } return Dest; } @@ -291,8 +273,8 @@ void Interpreter::visitICmpInst(ICmpInst &I) { case ICmpInst::ICMP_UGE: R = executeICMP_UGE(Src1, Src2, Ty); break; case ICmpInst::ICMP_SGE: R = executeICMP_SGE(Src1, Src2, Ty); break; default: - cerr << "Don't know how to handle this ICmp predicate!\n-->" << I; - abort(); + dbgs() << "Don't know how to handle this ICmp predicate!\n-->" << I; + llvm_unreachable(0); } SetValue(&I, R, SF); @@ -310,8 +292,8 @@ static GenericValue executeFCMP_OEQ(GenericValue Src1, GenericValue Src2, IMPLEMENT_FCMP(==, Float); IMPLEMENT_FCMP(==, Double); default: - cerr << "Unhandled type for FCmp EQ instruction: " << *Ty << "\n"; - abort(); + dbgs() << "Unhandled type for FCmp EQ instruction: " << *Ty << "\n"; + llvm_unreachable(0); } return Dest; } @@ -324,8 +306,8 @@ static GenericValue executeFCMP_ONE(GenericValue Src1, GenericValue Src2, IMPLEMENT_FCMP(!=, Double); default: - cerr << "Unhandled type for FCmp NE instruction: " << *Ty << "\n"; - abort(); + dbgs() << "Unhandled type for FCmp NE instruction: " << *Ty << "\n"; + llvm_unreachable(0); } return Dest; } @@ -337,8 +319,8 @@ static GenericValue executeFCMP_OLE(GenericValue Src1, GenericValue Src2, IMPLEMENT_FCMP(<=, Float); IMPLEMENT_FCMP(<=, Double); default: - cerr << "Unhandled type for FCmp LE instruction: " << *Ty << "\n"; - abort(); + dbgs() << "Unhandled type for FCmp LE instruction: " << *Ty << "\n"; + llvm_unreachable(0); } return Dest; } @@ -350,8 +332,8 @@ static GenericValue executeFCMP_OGE(GenericValue Src1, GenericValue Src2, IMPLEMENT_FCMP(>=, Float); IMPLEMENT_FCMP(>=, Double); default: - cerr << "Unhandled type for FCmp GE instruction: " << *Ty << "\n"; - abort(); + dbgs() << "Unhandled type for FCmp GE instruction: " << *Ty << "\n"; + llvm_unreachable(0); } return Dest; } @@ -363,8 +345,8 @@ static GenericValue executeFCMP_OLT(GenericValue Src1, GenericValue Src2, IMPLEMENT_FCMP(<, Float); IMPLEMENT_FCMP(<, Double); default: - cerr << "Unhandled type for FCmp LT instruction: " << *Ty << "\n"; - abort(); + dbgs() << "Unhandled type for FCmp LT instruction: " << *Ty << "\n"; + llvm_unreachable(0); } return Dest; } @@ -376,22 +358,22 @@ static GenericValue executeFCMP_OGT(GenericValue Src1, GenericValue Src2, IMPLEMENT_FCMP(>, Float); IMPLEMENT_FCMP(>, Double); default: - cerr << "Unhandled type for FCmp GT instruction: " << *Ty << "\n"; - abort(); + dbgs() << "Unhandled type for FCmp GT instruction: " << *Ty << "\n"; + llvm_unreachable(0); } return Dest; } -#define IMPLEMENT_UNORDERED(TY, X,Y) \ - if (TY == Type::FloatTy) \ - if (X.FloatVal != X.FloatVal || Y.FloatVal != Y.FloatVal) { \ - Dest.IntVal = APInt(1,true); \ - return Dest; \ - } \ - else if (X.DoubleVal != X.DoubleVal || Y.DoubleVal != Y.DoubleVal) { \ - Dest.IntVal = APInt(1,true); \ - return Dest; \ - } +#define IMPLEMENT_UNORDERED(TY, X,Y) \ + if (TY->isFloatTy()) { \ + if (X.FloatVal != X.FloatVal || Y.FloatVal != Y.FloatVal) { \ + Dest.IntVal = APInt(1,true); \ + return Dest; \ + } \ + } else if (X.DoubleVal != X.DoubleVal || Y.DoubleVal != Y.DoubleVal) { \ + Dest.IntVal = APInt(1,true); \ + return Dest; \ + } static GenericValue executeFCMP_UEQ(GenericValue Src1, GenericValue Src2, @@ -439,7 +421,7 @@ static GenericValue executeFCMP_UGT(GenericValue Src1, GenericValue Src2, static GenericValue executeFCMP_ORD(GenericValue Src1, GenericValue Src2, const Type *Ty) { GenericValue Dest; - if (Ty == Type::FloatTy) + if (Ty->isFloatTy()) Dest.IntVal = APInt(1,(Src1.FloatVal == Src1.FloatVal && Src2.FloatVal == Src2.FloatVal)); else @@ -451,7 +433,7 @@ static GenericValue executeFCMP_ORD(GenericValue Src1, GenericValue Src2, static GenericValue executeFCMP_UNO(GenericValue Src1, GenericValue Src2, const Type *Ty) { GenericValue Dest; - if (Ty == Type::FloatTy) + if (Ty->isFloatTy()) Dest.IntVal = APInt(1,(Src1.FloatVal != Src1.FloatVal || Src2.FloatVal != Src2.FloatVal)); else @@ -485,8 +467,8 @@ void Interpreter::visitFCmpInst(FCmpInst &I) { case FCmpInst::FCMP_UGE: R = executeFCMP_UGE(Src1, Src2, Ty); break; case FCmpInst::FCMP_OGE: R = executeFCMP_OGE(Src1, Src2, Ty); break; default: - cerr << "Don't know how to handle this FCmp predicate!\n-->" << I; - abort(); + dbgs() << "Don't know how to handle this FCmp predicate!\n-->" << I; + llvm_unreachable(0); } SetValue(&I, R, SF); @@ -531,8 +513,8 @@ static GenericValue executeCmpInst(unsigned predicate, GenericValue Src1, return Result; } default: - cerr << "Unhandled Cmp predicate\n"; - abort(); + dbgs() << "Unhandled Cmp predicate\n"; + llvm_unreachable(0); } } @@ -544,11 +526,14 @@ void Interpreter::visitBinaryOperator(BinaryOperator &I) { GenericValue R; // Result switch (I.getOpcode()) { - case Instruction::Add: executeAddInst (R, Src1, Src2, Ty); break; - case Instruction::Sub: executeSubInst (R, Src1, Src2, Ty); break; - case Instruction::Mul: executeMulInst (R, Src1, Src2, Ty); break; - case Instruction::FDiv: executeFDivInst (R, Src1, Src2, Ty); break; - case Instruction::FRem: executeFRemInst (R, Src1, Src2, Ty); break; + case Instruction::Add: R.IntVal = Src1.IntVal + Src2.IntVal; break; + case Instruction::Sub: R.IntVal = Src1.IntVal - Src2.IntVal; break; + case Instruction::Mul: R.IntVal = Src1.IntVal * Src2.IntVal; break; + case Instruction::FAdd: executeFAddInst(R, Src1, Src2, Ty); break; + case Instruction::FSub: executeFSubInst(R, Src1, Src2, Ty); break; + case Instruction::FMul: executeFMulInst(R, Src1, Src2, Ty); break; + case Instruction::FDiv: executeFDivInst(R, Src1, Src2, Ty); break; + case Instruction::FRem: executeFRemInst(R, Src1, Src2, Ty); break; case Instruction::UDiv: R.IntVal = Src1.IntVal.udiv(Src2.IntVal); break; case Instruction::SDiv: R.IntVal = Src1.IntVal.sdiv(Src2.IntVal); break; case Instruction::URem: R.IntVal = Src1.IntVal.urem(Src2.IntVal); break; @@ -557,8 +542,8 @@ void Interpreter::visitBinaryOperator(BinaryOperator &I) { case Instruction::Or: R.IntVal = Src1.IntVal | Src2.IntVal; break; case Instruction::Xor: R.IntVal = Src1.IntVal ^ Src2.IntVal; break; default: - cerr << "Don't know how to handle this binary operator!\n-->" << I; - abort(); + dbgs() << "Don't know how to handle this binary operator!\n-->" << I; + llvm_unreachable(0); } SetValue(&I, R, SF); @@ -587,9 +572,9 @@ void Interpreter::exitCalled(GenericValue GV) { // runAtExitHandlers() assumes there are no stack frames, but // if exit() was called, then it had a stack frame. Blow away // the stack before interpreting atexit handlers. - ECStack.clear (); - runAtExitHandlers (); - exit (GV.IntVal.zextOrTrunc(32).getZExtValue()); + ECStack.clear(); + runAtExitHandlers(); + exit(GV.IntVal.zextOrTrunc(32).getZExtValue()); } /// Pop the last stack frame off of ECStack and then copy the result @@ -600,23 +585,24 @@ void Interpreter::exitCalled(GenericValue GV) { /// care of switching to the normal destination BB, if we are returning /// from an invoke. /// -void Interpreter::popStackAndReturnValueToCaller (const Type *RetTy, - GenericValue Result) { +void Interpreter::popStackAndReturnValueToCaller(const Type *RetTy, + GenericValue Result) { // Pop the current stack frame. ECStack.pop_back(); if (ECStack.empty()) { // Finished main. Put result into exit code... - if (RetTy && RetTy->isInteger()) { // Nonvoid return type? + if (RetTy && RetTy->isIntegerTy()) { // Nonvoid return type? ExitValue = Result; // Capture the exit value of the program } else { - memset(&ExitValue, 0, sizeof(ExitValue)); + memset(&ExitValue.Untyped, 0, sizeof(ExitValue.Untyped)); } } else { // If we have a previous stack frame, and we have a previous call, // fill in the return value... ExecutionContext &CallingSF = ECStack.back(); if (Instruction *I = CallingSF.Caller.getInstruction()) { - if (CallingSF.Caller.getType() != Type::VoidTy) // Save result... + // Save result... + if (!CallingSF.Caller.getType()->isVoidTy()) SetValue(I, Result, CallingSF); if (InvokeInst *II = dyn_cast (I)) SwitchToNewBasicBlock (II->getNormalDest (), CallingSF); @@ -627,7 +613,7 @@ void Interpreter::popStackAndReturnValueToCaller (const Type *RetTy, void Interpreter::visitReturnInst(ReturnInst &I) { ExecutionContext &SF = ECStack.back(); - const Type *RetTy = Type::VoidTy; + const Type *RetTy = Type::getVoidTy(I.getContext()); GenericValue Result; // Save away the return value... (if we are not 'ret void') @@ -643,23 +629,22 @@ void Interpreter::visitUnwindInst(UnwindInst &I) { // Unwind stack Instruction *Inst; do { - ECStack.pop_back (); - if (ECStack.empty ()) - abort (); - Inst = ECStack.back ().Caller.getInstruction (); - } while (!(Inst && isa (Inst))); + ECStack.pop_back(); + if (ECStack.empty()) + llvm_report_error("Empty stack during unwind!"); + Inst = ECStack.back().Caller.getInstruction(); + } while (!(Inst && isa(Inst))); // Return from invoke - ExecutionContext &InvokingSF = ECStack.back (); - InvokingSF.Caller = CallSite (); + ExecutionContext &InvokingSF = ECStack.back(); + InvokingSF.Caller = CallSite(); // Go to exceptional destination BB of invoke instruction SwitchToNewBasicBlock(cast(Inst)->getUnwindDest(), InvokingSF); } void Interpreter::visitUnreachableInst(UnreachableInst &I) { - cerr << "ERROR: Program executed an 'unreachable' instruction!\n"; - abort(); + llvm_report_error("Program executed an 'unreachable' instruction!"); } void Interpreter::visitBranchInst(BranchInst &I) { @@ -693,6 +678,13 @@ void Interpreter::visitSwitchInst(SwitchInst &I) { SwitchToNewBasicBlock(Dest, SF); } +void Interpreter::visitIndirectBrInst(IndirectBrInst &I) { + ExecutionContext &SF = ECStack.back(); + void *Dest = GVTOP(getOperandValue(I.getAddress(), SF)); + SwitchToNewBasicBlock((BasicBlock*)Dest, SF); +} + + // SwitchToNewBasicBlock - This method is used to jump to a new basic block. // This function handles the actual updating of block and instruction iterators // as well as execution of all of the PHI nodes in the destination block. @@ -735,7 +727,7 @@ void Interpreter::SwitchToNewBasicBlock(BasicBlock *Dest, ExecutionContext &SF){ // Memory Instruction Implementations //===----------------------------------------------------------------------===// -void Interpreter::visitAllocationInst(AllocationInst &I) { +void Interpreter::visitAllocaInst(AllocaInst &I) { ExecutionContext &SF = ECStack.back(); const Type *Ty = I.getType()->getElementType(); // Type to be allocated @@ -744,16 +736,17 @@ void Interpreter::visitAllocationInst(AllocationInst &I) { unsigned NumElements = getOperandValue(I.getOperand(0), SF).IntVal.getZExtValue(); - unsigned TypeSize = (size_t)TD.getTypeSize(Ty); + unsigned TypeSize = (size_t)TD.getTypeAllocSize(Ty); - unsigned MemToAlloc = NumElements * TypeSize; + // Avoid malloc-ing zero bytes, use max()... + unsigned MemToAlloc = std::max(1U, NumElements * TypeSize); // Allocate enough memory to hold the type... void *Memory = malloc(MemToAlloc); - DOUT << "Allocated Type: " << *Ty << " (" << TypeSize << " bytes) x " - << NumElements << " (Total: " << MemToAlloc << ") at " - << unsigned(Memory) << '\n'; + DEBUG(dbgs() << "Allocated Type: " << *Ty << " (" << TypeSize << " bytes) x " + << NumElements << " (Total: " << MemToAlloc << ") at " + << uintptr_t(Memory) << '\n'); GenericValue Result = PTOGV(Memory); assert(Result.PointerVal != 0 && "Null pointer returned by malloc!"); @@ -763,20 +756,12 @@ void Interpreter::visitAllocationInst(AllocationInst &I) { ECStack.back().Allocas.add(Memory); } -void Interpreter::visitFreeInst(FreeInst &I) { - ExecutionContext &SF = ECStack.back(); - assert(isa(I.getOperand(0)->getType()) && "Freeing nonptr?"); - GenericValue Value = getOperandValue(I.getOperand(0), SF); - // TODO: Check to make sure memory is allocated - free(GVTOP(Value)); // Free memory -} - // getElementOffset - The workhorse for getelementptr. // GenericValue Interpreter::executeGEPOperation(Value *Ptr, gep_type_iterator I, gep_type_iterator E, ExecutionContext &SF) { - assert(isa(Ptr->getType()) && + assert(Ptr->getType()->isPointerTy() && "Cannot getElementOffset of a nonpointer type!"); uint64_t Total = 0; @@ -799,23 +784,23 @@ GenericValue Interpreter::executeGEPOperation(Value *Ptr, gep_type_iterator I, cast(I.getOperand()->getType())->getBitWidth(); if (BitWidth == 32) Idx = (int64_t)(int32_t)IdxGV.IntVal.getZExtValue(); - else if (BitWidth == 64) + else { + assert(BitWidth == 64 && "Invalid index type for getelementptr"); Idx = (int64_t)IdxGV.IntVal.getZExtValue(); - else - assert(0 && "Invalid index type for getelementptr"); - Total += TD.getTypeSize(ST->getElementType())*Idx; + } + Total += TD.getTypeAllocSize(ST->getElementType())*Idx; } } GenericValue Result; Result.PointerVal = ((char*)getOperandValue(Ptr, SF).PointerVal) + Total; - DOUT << "GEP Index " << Total << " bytes.\n"; + DEBUG(dbgs() << "GEP Index " << Total << " bytes.\n"); return Result; } void Interpreter::visitGetElementPtrInst(GetElementPtrInst &I) { ExecutionContext &SF = ECStack.back(); - SetValue(&I, TheEE->executeGEPOperation(I.getPointerOperand(), + SetValue(&I, executeGEPOperation(I.getPointerOperand(), gep_type_begin(I), gep_type_end(I), SF), SF); } @@ -826,6 +811,8 @@ void Interpreter::visitLoadInst(LoadInst &I) { GenericValue Result; LoadValueFromMemory(Result, Ptr, I.getType()); SetValue(&I, Result, SF); + if (I.isVolatile() && PrintVolatile) + dbgs() << "Volatile load " << I; } void Interpreter::visitStoreInst(StoreInst &I) { @@ -834,6 +821,8 @@ void Interpreter::visitStoreInst(StoreInst &I) { GenericValue SRC = getOperandValue(I.getPointerOperand(), SF); StoreValueToMemory(Val, (GenericValue *)GVTOP(SRC), I.getOperand(0)->getType()); + if (I.isVolatile() && PrintVolatile) + dbgs() << "Volatile store: " << I; } //===----------------------------------------------------------------------===// @@ -844,8 +833,8 @@ void Interpreter::visitCallSite(CallSite CS) { ExecutionContext &SF = ECStack.back(); // Check to see if this is an intrinsic function call... - if (Function *F = CS.getCalledFunction()) - if (F->isDeclaration ()) + Function *F = CS.getCalledFunction(); + if (F && F->isDeclaration()) switch (F->getIntrinsicID()) { case Intrinsic::not_intrinsic: break; @@ -865,36 +854,34 @@ void Interpreter::visitCallSite(CallSite CS) { // If it is an unknown intrinsic function, use the intrinsic lowering // class to transform it into hopefully tasty LLVM code. // - Instruction *Prev = CS.getInstruction()->getPrev(); + BasicBlock::iterator me(CS.getInstruction()); BasicBlock *Parent = CS.getInstruction()->getParent(); + bool atBegin(Parent->begin() == me); + if (!atBegin) + --me; IL->LowerIntrinsicCall(cast(CS.getInstruction())); // Restore the CurInst pointer to the first instruction newly inserted, if // any. - if (!Prev) { + if (atBegin) { SF.CurInst = Parent->begin(); } else { - SF.CurInst = Prev; + SF.CurInst = me; ++SF.CurInst; } return; } + SF.Caller = CS; std::vector ArgVals; const unsigned NumArgs = SF.Caller.arg_size(); ArgVals.reserve(NumArgs); + uint16_t pNum = 1; for (CallSite::arg_iterator i = SF.Caller.arg_begin(), - e = SF.Caller.arg_end(); i != e; ++i) { + e = SF.Caller.arg_end(); i != e; ++i, ++pNum) { Value *V = *i; ArgVals.push_back(getOperandValue(V, SF)); - // Promote all integral types whose size is < sizeof(int) into ints. We do - // this by zero or sign extending the value as appropriate according to the - // source type. - const Type *Ty = V->getType(); - if (Ty->isInteger()) - if (ArgVals.back().IntVal.getBitWidth() < 32) - ArgVals.back().IntVal = ArgVals.back().IntVal.sext(32); } // To handle indirect calls, we must get the pointer value from the argument @@ -908,7 +895,11 @@ void Interpreter::visitShl(BinaryOperator &I) { GenericValue Src1 = getOperandValue(I.getOperand(0), SF); GenericValue Src2 = getOperandValue(I.getOperand(1), SF); GenericValue Dest; - Dest.IntVal = Src1.IntVal.shl(Src2.IntVal.getZExtValue()); + if (Src2.IntVal.getZExtValue() < Src1.IntVal.getBitWidth()) + Dest.IntVal = Src1.IntVal.shl(Src2.IntVal.getZExtValue()); + else + Dest.IntVal = Src1.IntVal; + SetValue(&I, Dest, SF); } @@ -917,7 +908,11 @@ void Interpreter::visitLShr(BinaryOperator &I) { GenericValue Src1 = getOperandValue(I.getOperand(0), SF); GenericValue Src2 = getOperandValue(I.getOperand(1), SF); GenericValue Dest; - Dest.IntVal = Src1.IntVal.lshr(Src2.IntVal.getZExtValue()); + if (Src2.IntVal.getZExtValue() < Src1.IntVal.getBitWidth()) + Dest.IntVal = Src1.IntVal.lshr(Src2.IntVal.getZExtValue()); + else + Dest.IntVal = Src1.IntVal; + SetValue(&I, Dest, SF); } @@ -925,55 +920,46 @@ void Interpreter::visitAShr(BinaryOperator &I) { ExecutionContext &SF = ECStack.back(); GenericValue Src1 = getOperandValue(I.getOperand(0), SF); GenericValue Src2 = getOperandValue(I.getOperand(1), SF); - GenericValue Dest; - Dest.IntVal = Src1.IntVal.ashr(Src2.IntVal.getZExtValue()); + GenericValue Dest; + if (Src2.IntVal.getZExtValue() < Src1.IntVal.getBitWidth()) + Dest.IntVal = Src1.IntVal.ashr(Src2.IntVal.getZExtValue()); + else + Dest.IntVal = Src1.IntVal; + SetValue(&I, Dest, SF); } GenericValue Interpreter::executeTruncInst(Value *SrcVal, const Type *DstTy, ExecutionContext &SF) { - const Type *SrcTy = SrcVal->getType(); GenericValue Dest, Src = getOperandValue(SrcVal, SF); const IntegerType *DITy = cast(DstTy); - const IntegerType *SITy = cast(SrcTy); unsigned DBitWidth = DITy->getBitWidth(); - unsigned SBitWidth = SITy->getBitWidth(); - assert(SBitWidth > DBitWidth && "Invalid truncate"); Dest.IntVal = Src.IntVal.trunc(DBitWidth); return Dest; } GenericValue Interpreter::executeSExtInst(Value *SrcVal, const Type *DstTy, ExecutionContext &SF) { - const Type *SrcTy = SrcVal->getType(); GenericValue Dest, Src = getOperandValue(SrcVal, SF); const IntegerType *DITy = cast(DstTy); - const IntegerType *SITy = cast(SrcTy); unsigned DBitWidth = DITy->getBitWidth(); - unsigned SBitWidth = SITy->getBitWidth(); - assert(SBitWidth < DBitWidth && "Invalid sign extend"); Dest.IntVal = Src.IntVal.sext(DBitWidth); return Dest; } GenericValue Interpreter::executeZExtInst(Value *SrcVal, const Type *DstTy, ExecutionContext &SF) { - const Type *SrcTy = SrcVal->getType(); GenericValue Dest, Src = getOperandValue(SrcVal, SF); const IntegerType *DITy = cast(DstTy); - const IntegerType *SITy = cast(SrcTy); unsigned DBitWidth = DITy->getBitWidth(); - unsigned SBitWidth = SITy->getBitWidth(); - assert(SBitWidth < DBitWidth && "Invalid sign extend"); Dest.IntVal = Src.IntVal.zext(DBitWidth); return Dest; } GenericValue Interpreter::executeFPTruncInst(Value *SrcVal, const Type *DstTy, ExecutionContext &SF) { - const Type *SrcTy = SrcVal->getType(); GenericValue Dest, Src = getOperandValue(SrcVal, SF); - assert(SrcTy == Type::DoubleTy && DstTy == Type::FloatTy && + assert(SrcVal->getType()->isDoubleTy() && DstTy->isFloatTy() && "Invalid FPTrunc instruction"); Dest.FloatVal = (float) Src.DoubleVal; return Dest; @@ -981,9 +967,8 @@ GenericValue Interpreter::executeFPTruncInst(Value *SrcVal, const Type *DstTy, GenericValue Interpreter::executeFPExtInst(Value *SrcVal, const Type *DstTy, ExecutionContext &SF) { - const Type *SrcTy = SrcVal->getType(); GenericValue Dest, Src = getOperandValue(SrcVal, SF); - assert(SrcTy == Type::FloatTy && DstTy == Type::DoubleTy && + assert(SrcVal->getType()->isFloatTy() && DstTy->isDoubleTy() && "Invalid FPTrunc instruction"); Dest.DoubleVal = (double) Src.FloatVal; return Dest; @@ -994,7 +979,7 @@ GenericValue Interpreter::executeFPToUIInst(Value *SrcVal, const Type *DstTy, const Type *SrcTy = SrcVal->getType(); uint32_t DBitWidth = cast(DstTy)->getBitWidth(); GenericValue Dest, Src = getOperandValue(SrcVal, SF); - assert(SrcTy->isFloatingPoint() && "Invalid FPToUI instruction"); + assert(SrcTy->isFloatingPointTy() && "Invalid FPToUI instruction"); if (SrcTy->getTypeID() == Type::FloatTyID) Dest.IntVal = APIntOps::RoundFloatToAPInt(Src.FloatVal, DBitWidth); @@ -1008,7 +993,7 @@ GenericValue Interpreter::executeFPToSIInst(Value *SrcVal, const Type *DstTy, const Type *SrcTy = SrcVal->getType(); uint32_t DBitWidth = cast(DstTy)->getBitWidth(); GenericValue Dest, Src = getOperandValue(SrcVal, SF); - assert(SrcTy->isFloatingPoint() && "Invalid FPToSI instruction"); + assert(SrcTy->isFloatingPointTy() && "Invalid FPToSI instruction"); if (SrcTy->getTypeID() == Type::FloatTyID) Dest.IntVal = APIntOps::RoundFloatToAPInt(Src.FloatVal, DBitWidth); @@ -1020,7 +1005,7 @@ GenericValue Interpreter::executeFPToSIInst(Value *SrcVal, const Type *DstTy, GenericValue Interpreter::executeUIToFPInst(Value *SrcVal, const Type *DstTy, ExecutionContext &SF) { GenericValue Dest, Src = getOperandValue(SrcVal, SF); - assert(DstTy->isFloatingPoint() && "Invalid UIToFP instruction"); + assert(DstTy->isFloatingPointTy() && "Invalid UIToFP instruction"); if (DstTy->getTypeID() == Type::FloatTyID) Dest.FloatVal = APIntOps::RoundAPIntToFloat(Src.IntVal); @@ -1032,7 +1017,7 @@ GenericValue Interpreter::executeUIToFPInst(Value *SrcVal, const Type *DstTy, GenericValue Interpreter::executeSIToFPInst(Value *SrcVal, const Type *DstTy, ExecutionContext &SF) { GenericValue Dest, Src = getOperandValue(SrcVal, SF); - assert(DstTy->isFloatingPoint() && "Invalid SIToFP instruction"); + assert(DstTy->isFloatingPointTy() && "Invalid SIToFP instruction"); if (DstTy->getTypeID() == Type::FloatTyID) Dest.FloatVal = APIntOps::RoundSignedAPIntToFloat(Src.IntVal); @@ -1044,10 +1029,9 @@ GenericValue Interpreter::executeSIToFPInst(Value *SrcVal, const Type *DstTy, GenericValue Interpreter::executePtrToIntInst(Value *SrcVal, const Type *DstTy, ExecutionContext &SF) { - const Type *SrcTy = SrcVal->getType(); uint32_t DBitWidth = cast(DstTy)->getBitWidth(); GenericValue Dest, Src = getOperandValue(SrcVal, SF); - assert(isa(SrcTy) && "Invalid PtrToInt instruction"); + assert(SrcVal->getType()->isPointerTy() && "Invalid PtrToInt instruction"); Dest.IntVal = APInt(DBitWidth, (intptr_t) Src.PointerVal); return Dest; @@ -1056,13 +1040,13 @@ GenericValue Interpreter::executePtrToIntInst(Value *SrcVal, const Type *DstTy, GenericValue Interpreter::executeIntToPtrInst(Value *SrcVal, const Type *DstTy, ExecutionContext &SF) { GenericValue Dest, Src = getOperandValue(SrcVal, SF); - assert(isa(DstTy) && "Invalid PtrToInt instruction"); + assert(DstTy->isPointerTy() && "Invalid PtrToInt instruction"); - uint32_t PtrSize = TD.getPointerSize(); + uint32_t PtrSize = TD.getPointerSizeInBits(); if (PtrSize != Src.IntVal.getBitWidth()) - Src.IntVal = Src.IntVal.trunc(PtrSize); + Src.IntVal = Src.IntVal.zextOrTrunc(PtrSize); - Dest.PointerVal = (PointerTy) Src.IntVal.getZExtValue(); + Dest.PointerVal = PointerTy(intptr_t(Src.IntVal.getZExtValue())); return Dest; } @@ -1071,30 +1055,32 @@ GenericValue Interpreter::executeBitCastInst(Value *SrcVal, const Type *DstTy, const Type *SrcTy = SrcVal->getType(); GenericValue Dest, Src = getOperandValue(SrcVal, SF); - if (isa(DstTy)) { - assert(isa(SrcTy) && "Invalid BitCast"); + if (DstTy->isPointerTy()) { + assert(SrcTy->isPointerTy() && "Invalid BitCast"); Dest.PointerVal = Src.PointerVal; - } else if (DstTy->isInteger()) { - if (SrcTy == Type::FloatTy) { + } else if (DstTy->isIntegerTy()) { + if (SrcTy->isFloatTy()) { + Dest.IntVal.zext(sizeof(Src.FloatVal) * CHAR_BIT); Dest.IntVal.floatToBits(Src.FloatVal); - } else if (SrcTy == Type::DoubleTy) { + } else if (SrcTy->isDoubleTy()) { + Dest.IntVal.zext(sizeof(Src.DoubleVal) * CHAR_BIT); Dest.IntVal.doubleToBits(Src.DoubleVal); - } else if (SrcTy->isInteger()) { + } else if (SrcTy->isIntegerTy()) { Dest.IntVal = Src.IntVal; } else - assert(0 && "Invalid BitCast"); - } else if (DstTy == Type::FloatTy) { - if (SrcTy->isInteger()) + llvm_unreachable("Invalid BitCast"); + } else if (DstTy->isFloatTy()) { + if (SrcTy->isIntegerTy()) Dest.FloatVal = Src.IntVal.bitsToFloat(); else Dest.FloatVal = Src.FloatVal; - } else if (DstTy == Type::DoubleTy) { - if (SrcTy->isInteger()) + } else if (DstTy->isDoubleTy()) { + if (SrcTy->isIntegerTy()) Dest.DoubleVal = Src.IntVal.bitsToDouble(); else Dest.DoubleVal = Src.DoubleVal; } else - assert(0 && "Invalid Bitcast"); + llvm_unreachable("Invalid Bitcast"); return Dest; } @@ -1178,8 +1164,8 @@ void Interpreter::visitVAArgInst(VAArgInst &I) { IMPLEMENT_VAARG(Float); IMPLEMENT_VAARG(Double); default: - cerr << "Unhandled dest type for vaarg instruction: " << *Ty << "\n"; - abort(); + dbgs() << "Unhandled dest type for vaarg instruction: " << *Ty << "\n"; + llvm_unreachable(0); } // Set the Value of this Instruction. @@ -1240,18 +1226,21 @@ GenericValue Interpreter::getConstantExprValue (ConstantExpr *CE, GenericValue Dest; const Type * Ty = CE->getOperand(0)->getType(); switch (CE->getOpcode()) { - case Instruction::Add: executeAddInst (Dest, Op0, Op1, Ty); break; - case Instruction::Sub: executeSubInst (Dest, Op0, Op1, Ty); break; - case Instruction::Mul: executeMulInst (Dest, Op0, Op1, Ty); break; + case Instruction::Add: Dest.IntVal = Op0.IntVal + Op1.IntVal; break; + case Instruction::Sub: Dest.IntVal = Op0.IntVal - Op1.IntVal; break; + case Instruction::Mul: Dest.IntVal = Op0.IntVal * Op1.IntVal; break; + case Instruction::FAdd: executeFAddInst(Dest, Op0, Op1, Ty); break; + case Instruction::FSub: executeFSubInst(Dest, Op0, Op1, Ty); break; + case Instruction::FMul: executeFMulInst(Dest, Op0, Op1, Ty); break; case Instruction::FDiv: executeFDivInst(Dest, Op0, Op1, Ty); break; case Instruction::FRem: executeFRemInst(Dest, Op0, Op1, Ty); break; case Instruction::SDiv: Dest.IntVal = Op0.IntVal.sdiv(Op1.IntVal); break; case Instruction::UDiv: Dest.IntVal = Op0.IntVal.udiv(Op1.IntVal); break; case Instruction::URem: Dest.IntVal = Op0.IntVal.urem(Op1.IntVal); break; case Instruction::SRem: Dest.IntVal = Op0.IntVal.srem(Op1.IntVal); break; - case Instruction::And: Dest.IntVal = Op0.IntVal.And(Op1.IntVal); break; - case Instruction::Or: Dest.IntVal = Op0.IntVal.Or(Op1.IntVal); break; - case Instruction::Xor: Dest.IntVal = Op0.IntVal.Xor(Op1.IntVal); break; + case Instruction::And: Dest.IntVal = Op0.IntVal & Op1.IntVal; break; + case Instruction::Or: Dest.IntVal = Op0.IntVal | Op1.IntVal; break; + case Instruction::Xor: Dest.IntVal = Op0.IntVal ^ Op1.IntVal; break; case Instruction::Shl: Dest.IntVal = Op0.IntVal.shl(Op1.IntVal.getZExtValue()); break; @@ -1262,8 +1251,8 @@ GenericValue Interpreter::getConstantExprValue (ConstantExpr *CE, Dest.IntVal = Op0.IntVal.ashr(Op1.IntVal.getZExtValue()); break; default: - cerr << "Unhandled ConstantExpr: " << *CE << "\n"; - abort(); + dbgs() << "Unhandled ConstantExpr: " << *CE << "\n"; + llvm_unreachable(0); return GenericValue(); } return Dest; @@ -1317,13 +1306,15 @@ void Interpreter::callFunction(Function *F, // Handle non-varargs arguments... unsigned i = 0; - for (Function::arg_iterator AI = F->arg_begin(), E = F->arg_end(); AI != E; ++AI, ++i) + for (Function::arg_iterator AI = F->arg_begin(), E = F->arg_end(); + AI != E; ++AI, ++i) SetValue(AI, ArgVals[i], StackFrame); // Handle varargs arguments... StackFrame.VarArgs.assign(ArgVals.begin()+i, ArgVals.end()); } + void Interpreter::run() { while (!ECStack.empty()) { // Interpret a single instruction & increment the "PC". @@ -1333,7 +1324,29 @@ void Interpreter::run() { // Track the number of dynamic instructions executed. ++NumDynamicInsts; - DOUT << "About to interpret: " << I; + DEBUG(dbgs() << "About to interpret: " << I); visit(I); // Dispatch to one of the visit* methods... +#if 0 + // This is not safe, as visiting the instruction could lower it and free I. +DEBUG( + if (!isa(I) && !isa(I) && + I.getType() != Type::VoidTy) { + dbgs() << " --> "; + const GenericValue &Val = SF.Values[&I]; + switch (I.getType()->getTypeID()) { + default: llvm_unreachable("Invalid GenericValue Type"); + case Type::VoidTyID: dbgs() << "void"; break; + case Type::FloatTyID: dbgs() << "float " << Val.FloatVal; break; + case Type::DoubleTyID: dbgs() << "double " << Val.DoubleVal; break; + case Type::PointerTyID: dbgs() << "void* " << intptr_t(Val.PointerVal); + break; + case Type::IntegerTyID: + dbgs() << "i" << Val.IntVal.getBitWidth() << " " + << Val.IntVal.toStringUnsigned(10) + << " (0x" << Val.IntVal.toStringUnsigned(16) << ")\n"; + break; + } + }); +#endif } }