//===-- Execution.cpp - Implement code to simulate the program ------------===//
-//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
// This file contains the actual instruction interpreter.
//
//===----------------------------------------------------------------------===//
#include "Interpreter.h"
-#include "ExecutionAnnotations.h"
-#include "llvm/iPHINode.h"
-#include "llvm/iOther.h"
-#include "llvm/iTerminators.h"
-#include "llvm/iMemory.h"
-#include "llvm/DerivedTypes.h"
-#include "llvm/Constants.h"
-#include "llvm/Assembly/Writer.h"
-#include "llvm/Target/TargetData.h"
-#include "Support/CommandLine.h"
-#include <math.h> // For fmod
-#include <signal.h>
-#include <setjmp.h>
-using std::vector;
-using std::cout;
-using std::cerr;
-
-static cl::opt<bool>
-QuietMode("quiet", cl::desc("Do not emit any non-program output"));
-
-static cl::alias
-QuietModeA("q", cl::desc("Alias for -quiet"), cl::aliasopt(QuietMode));
-
-static cl::opt<bool>
-ArrayChecksEnabled("array-checks", cl::desc("Enable array bound checks"));
-
-static cl::opt<bool>
-AbortOnExceptions("abort-on-exception",
- cl::desc("Halt execution on a machine exception"));
-
-// Create a TargetData structure to handle memory addressing and size/alignment
-// computations
-//
-TargetData TD("lli Interpreter");
-CachedWriter CW; // Object to accelerate printing of LLVM
-
-
-#ifdef PROFILE_STRUCTURE_FIELDS
-static cl::opt<bool>
-ProfileStructureFields("profilestructfields",
- cl::desc("Profile Structure Field Accesses"));
-#include <map>
-static std::map<const StructType *, vector<unsigned> > FieldAccessCounts;
-#endif
-
-sigjmp_buf SignalRecoverBuffer;
-static bool InInstruction = false;
-
-extern "C" {
-static void SigHandler(int Signal) {
- if (InInstruction)
- siglongjmp(SignalRecoverBuffer, Signal);
-}
-}
-
-static void initializeSignalHandlers() {
- struct sigaction Action;
- Action.sa_handler = SigHandler;
- Action.sa_flags = SA_SIGINFO;
- sigemptyset(&Action.sa_mask);
- sigaction(SIGSEGV, &Action, 0);
- sigaction(SIGBUS, &Action, 0);
- sigaction(SIGINT, &Action, 0);
- sigaction(SIGFPE, &Action, 0);
-}
-
+#include "llvm/ADT/APInt.h"
+#include "llvm/ADT/Statistic.h"
+#include "llvm/CodeGen/IntrinsicLowering.h"
+#include "llvm/IR/Constants.h"
+#include "llvm/IR/DerivedTypes.h"
+#include "llvm/IR/GetElementPtrTypeIterator.h"
+#include "llvm/IR/Instructions.h"
+#include "llvm/Support/CommandLine.h"
+#include "llvm/Support/Debug.h"
+#include "llvm/Support/ErrorHandling.h"
+#include "llvm/Support/MathExtras.h"
+#include <algorithm>
+#include <cmath>
+using namespace llvm;
+
+#define DEBUG_TYPE "interpreter"
+
+STATISTIC(NumDynamicInsts, "Number of dynamic instructions executed");
+
+static cl::opt<bool> PrintVolatile("interpreter-print-volatile", cl::Hidden,
+ cl::desc("make the interpreter print every volatile load and store"));
//===----------------------------------------------------------------------===//
-// Value Manipulation code
+// Various Helper Functions
//===----------------------------------------------------------------------===//
-static unsigned getOperandSlot(Value *V) {
- SlotNumber *SN = (SlotNumber*)V->getAnnotation(SlotNumberAID);
- assert(SN && "Operand does not have a slot number annotation!");
- return SN->SlotNum;
-}
-
-#define GET_CONST_VAL(TY, CLASS) \
- case Type::TY##TyID: Result.TY##Val = cast<CLASS>(C)->getValue(); break
-
-// Operations used by constant expr implementations...
-static GenericValue executeCastOperation(Value *Src, const Type *DestTy,
- ExecutionContext &SF);
-static GenericValue executeGEPOperation(Value *Src, User::op_iterator IdxBegin,
- User::op_iterator IdxEnd,
- ExecutionContext &SF);
-static GenericValue executeAddInst(GenericValue Src1, GenericValue Src2,
- const Type *Ty, ExecutionContext &SF);
-
-static GenericValue getConstantValue(const Constant *C) {
- GenericValue Result;
- switch (C->getType()->getPrimitiveID()) {
- GET_CONST_VAL(Bool , ConstantBool);
- GET_CONST_VAL(UByte , ConstantUInt);
- GET_CONST_VAL(SByte , ConstantSInt);
- GET_CONST_VAL(UShort , ConstantUInt);
- GET_CONST_VAL(Short , ConstantSInt);
- GET_CONST_VAL(UInt , ConstantUInt);
- GET_CONST_VAL(Int , ConstantSInt);
- GET_CONST_VAL(ULong , ConstantUInt);
- GET_CONST_VAL(Long , ConstantSInt);
- GET_CONST_VAL(Float , ConstantFP);
- GET_CONST_VAL(Double , ConstantFP);
- case Type::PointerTyID:
- if (isa<ConstantPointerNull>(C)) {
- Result.PointerVal = 0;
- } else if (const ConstantPointerRef *CPR = dyn_cast<ConstantPointerRef>(C)){
- GlobalAddress *Address =
- (GlobalAddress*)CPR->getValue()->getOrCreateAnnotation(GlobalAddressAID);
- Result.PointerVal = (PointerTy)Address->Ptr;
- } else {
- assert(0 && "Unknown constant pointer type!");
- }
- break;
- default:
- cout << "ERROR: Constant unimp for type: " << C->getType() << "\n";
- }
- return Result;
-}
-
-static GenericValue getOperandValue(Value *V, ExecutionContext &SF) {
- if (ConstantExpr *CE = dyn_cast<ConstantExpr>(V)) {
- switch (CE->getOpcode()) {
- case Instruction::Cast:
- return executeCastOperation(CE->getOperand(0), CE->getType(), SF);
- case Instruction::GetElementPtr:
- return executeGEPOperation(CE->getOperand(0), CE->op_begin()+1,
- CE->op_end(), SF);
- case Instruction::Add:
- return executeAddInst(getOperandValue(CE->getOperand(0), SF),
- getOperandValue(CE->getOperand(1), SF),
- CE->getType(), SF);
- default:
- cerr << "Unhandled ConstantExpr: " << CE << "\n";
- abort();
- { GenericValue V; return V; }
- }
- } else if (Constant *CPV = dyn_cast<Constant>(V)) {
- return getConstantValue(CPV);
- } else if (GlobalValue *GV = dyn_cast<GlobalValue>(V)) {
- GlobalAddress *Address =
- (GlobalAddress*)GV->getOrCreateAnnotation(GlobalAddressAID);
- GenericValue Result;
- Result.PointerVal = (PointerTy)(GenericValue*)Address->Ptr;
- return Result;
- } else {
- unsigned TyP = V->getType()->getUniqueID(); // TypePlane for value
- unsigned OpSlot = getOperandSlot(V);
- assert(TyP < SF.Values.size() &&
- OpSlot < SF.Values[TyP].size() && "Value out of range!");
- return SF.Values[TyP][getOperandSlot(V)];
- }
-}
-
-static void printOperandInfo(Value *V, ExecutionContext &SF) {
- if (isa<Constant>(V)) {
- cout << "Constant Pool Value\n";
- } else if (isa<GlobalValue>(V)) {
- cout << "Global Value\n";
- } else {
- unsigned TyP = V->getType()->getUniqueID(); // TypePlane for value
- unsigned Slot = getOperandSlot(V);
- cout << "Value=" << (void*)V << " TypeID=" << TyP << " Slot=" << Slot
- << " Addr=" << &SF.Values[TyP][Slot] << " SF=" << &SF
- << " Contents=0x";
-
- const unsigned char *Buf = (const unsigned char*)&SF.Values[TyP][Slot];
- for (unsigned i = 0; i < sizeof(GenericValue); ++i) {
- unsigned char Cur = Buf[i];
- cout << ( Cur >= 160? char((Cur>>4)+'A'-10) : char((Cur>>4) + '0'))
- << ((Cur&15) >= 10? char((Cur&15)+'A'-10) : char((Cur&15) + '0'));
- }
- cout << "\n";
- }
-}
-
-
-
static void SetValue(Value *V, GenericValue Val, ExecutionContext &SF) {
- unsigned TyP = V->getType()->getUniqueID(); // TypePlane for value
-
- //cout << "Setting value: " << &SF.Values[TyP][getOperandSlot(V)] << "\n";
- SF.Values[TyP][getOperandSlot(V)] = Val;
-}
-
-
-//===----------------------------------------------------------------------===//
-// Annotation Wrangling code
-//===----------------------------------------------------------------------===//
-
-void Interpreter::initializeExecutionEngine() {
- AnnotationManager::registerAnnotationFactory(MethodInfoAID,
- &MethodInfo::Create);
- AnnotationManager::registerAnnotationFactory(GlobalAddressAID,
- &GlobalAddress::Create);
- initializeSignalHandlers();
-}
-
-static void StoreValueToMemory(GenericValue Val, GenericValue *Ptr,
- const Type *Ty);
-
-// InitializeMemory - Recursive function to apply a Constant value into the
-// specified memory location...
-//
-static void InitializeMemory(const Constant *Init, char *Addr) {
-
- if (Init->getType()->isFirstClassType()) {
- GenericValue Val = getConstantValue(Init);
- StoreValueToMemory(Val, (GenericValue*)Addr, Init->getType());
- return;
- }
-
- switch (Init->getType()->getPrimitiveID()) {
- case Type::ArrayTyID: {
- const ConstantArray *CPA = cast<ConstantArray>(Init);
- const vector<Use> &Val = CPA->getValues();
- unsigned ElementSize =
- TD.getTypeSize(cast<ArrayType>(CPA->getType())->getElementType());
- for (unsigned i = 0; i < Val.size(); ++i)
- InitializeMemory(cast<Constant>(Val[i].get()), Addr+i*ElementSize);
- return;
- }
-
- case Type::StructTyID: {
- const ConstantStruct *CPS = cast<ConstantStruct>(Init);
- const StructLayout *SL=TD.getStructLayout(cast<StructType>(CPS->getType()));
- const vector<Use> &Val = CPS->getValues();
- for (unsigned i = 0; i < Val.size(); ++i)
- InitializeMemory(cast<Constant>(Val[i].get()),
- Addr+SL->MemberOffsets[i]);
- return;
- }
-
- default:
- CW << "Bad Type: " << Init->getType() << "\n";
- assert(0 && "Unknown constant type to initialize memory with!");
- }
-}
-
-Annotation *GlobalAddress::Create(AnnotationID AID, const Annotable *O, void *){
- assert(AID == GlobalAddressAID);
-
- // This annotation will only be created on GlobalValue objects...
- GlobalValue *GVal = cast<GlobalValue>((Value*)O);
-
- if (isa<Function>(GVal)) {
- // The GlobalAddress object for a function is just a pointer to function
- // itself. Don't delete it when the annotation is gone though!
- return new GlobalAddress(GVal, false);
- }
-
- // Handle the case of a global variable...
- assert(isa<GlobalVariable>(GVal) &&
- "Global value found that isn't a function or global variable!");
- GlobalVariable *GV = cast<GlobalVariable>(GVal);
-
- // First off, we must allocate space for the global variable to point at...
- const Type *Ty = GV->getType()->getElementType(); // Type to be allocated
-
- // Allocate enough memory to hold the type...
- void *Addr = calloc(1, TD.getTypeSize(Ty));
- assert(Addr != 0 && "Null pointer returned by malloc!");
-
- // Initialize the memory if there is an initializer...
- if (GV->hasInitializer())
- InitializeMemory(GV->getInitializer(), (char*)Addr);
-
- return new GlobalAddress(Addr, true); // Simply invoke the ctor
+ SF.Values[V] = Val;
}
//===----------------------------------------------------------------------===//
//===----------------------------------------------------------------------===//
#define IMPLEMENT_BINARY_OPERATOR(OP, TY) \
- case Type::TY##TyID: Dest.TY##Val = Src1.TY##Val OP Src2.TY##Val; break
+ case Type::TY##TyID: \
+ Dest.TY##Val = Src1.TY##Val OP Src2.TY##Val; \
+ break
-static GenericValue executeAddInst(GenericValue Src1, GenericValue Src2,
- const Type *Ty, ExecutionContext &SF) {
- GenericValue Dest;
- switch (Ty->getPrimitiveID()) {
- IMPLEMENT_BINARY_OPERATOR(+, UByte);
- IMPLEMENT_BINARY_OPERATOR(+, SByte);
- IMPLEMENT_BINARY_OPERATOR(+, UShort);
- IMPLEMENT_BINARY_OPERATOR(+, Short);
- IMPLEMENT_BINARY_OPERATOR(+, UInt);
- IMPLEMENT_BINARY_OPERATOR(+, Int);
- IMPLEMENT_BINARY_OPERATOR(+, ULong);
- IMPLEMENT_BINARY_OPERATOR(+, Long);
+static void executeFAddInst(GenericValue &Dest, GenericValue Src1,
+ GenericValue Src2, Type *Ty) {
+ switch (Ty->getTypeID()) {
IMPLEMENT_BINARY_OPERATOR(+, Float);
IMPLEMENT_BINARY_OPERATOR(+, Double);
- IMPLEMENT_BINARY_OPERATOR(+, Pointer);
default:
- cout << "Unhandled type for Add instruction: " << Ty << "\n";
+ dbgs() << "Unhandled type for FAdd instruction: " << *Ty << "\n";
+ llvm_unreachable(nullptr);
}
- return Dest;
}
-static GenericValue executeSubInst(GenericValue Src1, GenericValue Src2,
- const Type *Ty, ExecutionContext &SF) {
- GenericValue Dest;
- switch (Ty->getPrimitiveID()) {
- IMPLEMENT_BINARY_OPERATOR(-, UByte);
- IMPLEMENT_BINARY_OPERATOR(-, SByte);
- IMPLEMENT_BINARY_OPERATOR(-, UShort);
- IMPLEMENT_BINARY_OPERATOR(-, Short);
- IMPLEMENT_BINARY_OPERATOR(-, UInt);
- IMPLEMENT_BINARY_OPERATOR(-, Int);
- IMPLEMENT_BINARY_OPERATOR(-, ULong);
- IMPLEMENT_BINARY_OPERATOR(-, Long);
+static void executeFSubInst(GenericValue &Dest, GenericValue Src1,
+ GenericValue Src2, Type *Ty) {
+ switch (Ty->getTypeID()) {
IMPLEMENT_BINARY_OPERATOR(-, Float);
IMPLEMENT_BINARY_OPERATOR(-, Double);
- IMPLEMENT_BINARY_OPERATOR(-, Pointer);
default:
- cout << "Unhandled type for Sub instruction: " << Ty << "\n";
+ dbgs() << "Unhandled type for FSub instruction: " << *Ty << "\n";
+ llvm_unreachable(nullptr);
}
- return Dest;
}
-static GenericValue executeMulInst(GenericValue Src1, GenericValue Src2,
- const Type *Ty, ExecutionContext &SF) {
- GenericValue Dest;
- switch (Ty->getPrimitiveID()) {
- IMPLEMENT_BINARY_OPERATOR(*, UByte);
- IMPLEMENT_BINARY_OPERATOR(*, SByte);
- IMPLEMENT_BINARY_OPERATOR(*, UShort);
- IMPLEMENT_BINARY_OPERATOR(*, Short);
- IMPLEMENT_BINARY_OPERATOR(*, UInt);
- IMPLEMENT_BINARY_OPERATOR(*, Int);
- IMPLEMENT_BINARY_OPERATOR(*, ULong);
- IMPLEMENT_BINARY_OPERATOR(*, Long);
+static void executeFMulInst(GenericValue &Dest, GenericValue Src1,
+ GenericValue Src2, Type *Ty) {
+ switch (Ty->getTypeID()) {
IMPLEMENT_BINARY_OPERATOR(*, Float);
IMPLEMENT_BINARY_OPERATOR(*, Double);
- IMPLEMENT_BINARY_OPERATOR(*, Pointer);
default:
- cout << "Unhandled type for Mul instruction: " << Ty << "\n";
+ dbgs() << "Unhandled type for FMul instruction: " << *Ty << "\n";
+ llvm_unreachable(nullptr);
}
- return Dest;
}
-static GenericValue executeDivInst(GenericValue Src1, GenericValue Src2,
- const Type *Ty, ExecutionContext &SF) {
- GenericValue Dest;
- switch (Ty->getPrimitiveID()) {
- IMPLEMENT_BINARY_OPERATOR(/, UByte);
- IMPLEMENT_BINARY_OPERATOR(/, SByte);
- IMPLEMENT_BINARY_OPERATOR(/, UShort);
- IMPLEMENT_BINARY_OPERATOR(/, Short);
- IMPLEMENT_BINARY_OPERATOR(/, UInt);
- IMPLEMENT_BINARY_OPERATOR(/, Int);
- IMPLEMENT_BINARY_OPERATOR(/, ULong);
- IMPLEMENT_BINARY_OPERATOR(/, Long);
+static void executeFDivInst(GenericValue &Dest, GenericValue Src1,
+ GenericValue Src2, Type *Ty) {
+ switch (Ty->getTypeID()) {
IMPLEMENT_BINARY_OPERATOR(/, Float);
IMPLEMENT_BINARY_OPERATOR(/, Double);
- IMPLEMENT_BINARY_OPERATOR(/, Pointer);
default:
- cout << "Unhandled type for Div instruction: " << Ty << "\n";
+ dbgs() << "Unhandled type for FDiv instruction: " << *Ty << "\n";
+ llvm_unreachable(nullptr);
}
- return Dest;
}
-static GenericValue executeRemInst(GenericValue Src1, GenericValue Src2,
- const Type *Ty, ExecutionContext &SF) {
- GenericValue Dest;
- switch (Ty->getPrimitiveID()) {
- IMPLEMENT_BINARY_OPERATOR(%, UByte);
- IMPLEMENT_BINARY_OPERATOR(%, SByte);
- IMPLEMENT_BINARY_OPERATOR(%, UShort);
- IMPLEMENT_BINARY_OPERATOR(%, Short);
- IMPLEMENT_BINARY_OPERATOR(%, UInt);
- IMPLEMENT_BINARY_OPERATOR(%, Int);
- IMPLEMENT_BINARY_OPERATOR(%, ULong);
- IMPLEMENT_BINARY_OPERATOR(%, Long);
- IMPLEMENT_BINARY_OPERATOR(%, Pointer);
+static void executeFRemInst(GenericValue &Dest, GenericValue Src1,
+ GenericValue Src2, Type *Ty) {
+ switch (Ty->getTypeID()) {
case Type::FloatTyID:
Dest.FloatVal = fmod(Src1.FloatVal, Src2.FloatVal);
break;
Dest.DoubleVal = fmod(Src1.DoubleVal, Src2.DoubleVal);
break;
default:
- cout << "Unhandled type for Rem instruction: " << Ty << "\n";
+ dbgs() << "Unhandled type for Rem instruction: " << *Ty << "\n";
+ llvm_unreachable(nullptr);
}
- return Dest;
}
-static GenericValue executeAndInst(GenericValue Src1, GenericValue Src2,
- const Type *Ty, ExecutionContext &SF) {
+#define IMPLEMENT_INTEGER_ICMP(OP, TY) \
+ case Type::IntegerTyID: \
+ Dest.IntVal = APInt(1,Src1.IntVal.OP(Src2.IntVal)); \
+ break;
+
+#define IMPLEMENT_VECTOR_INTEGER_ICMP(OP, TY) \
+ case Type::VectorTyID: { \
+ assert(Src1.AggregateVal.size() == Src2.AggregateVal.size()); \
+ Dest.AggregateVal.resize( Src1.AggregateVal.size() ); \
+ for( uint32_t _i=0;_i<Src1.AggregateVal.size();_i++) \
+ Dest.AggregateVal[_i].IntVal = APInt(1, \
+ Src1.AggregateVal[_i].IntVal.OP(Src2.AggregateVal[_i].IntVal));\
+ } break;
+
+// Handle pointers specially because they must be compared with only as much
+// width as the host has. We _do not_ want to be comparing 64 bit values when
+// running on a 32-bit target, otherwise the upper 32 bits might mess up
+// comparisons if they contain garbage.
+#define IMPLEMENT_POINTER_ICMP(OP) \
+ case Type::PointerTyID: \
+ Dest.IntVal = APInt(1,(void*)(intptr_t)Src1.PointerVal OP \
+ (void*)(intptr_t)Src2.PointerVal); \
+ break;
+
+static GenericValue executeICMP_EQ(GenericValue Src1, GenericValue Src2,
+ Type *Ty) {
GenericValue Dest;
- switch (Ty->getPrimitiveID()) {
- IMPLEMENT_BINARY_OPERATOR(&, UByte);
- IMPLEMENT_BINARY_OPERATOR(&, SByte);
- IMPLEMENT_BINARY_OPERATOR(&, UShort);
- IMPLEMENT_BINARY_OPERATOR(&, Short);
- IMPLEMENT_BINARY_OPERATOR(&, UInt);
- IMPLEMENT_BINARY_OPERATOR(&, Int);
- IMPLEMENT_BINARY_OPERATOR(&, ULong);
- IMPLEMENT_BINARY_OPERATOR(&, Long);
- IMPLEMENT_BINARY_OPERATOR(&, Pointer);
+ switch (Ty->getTypeID()) {
+ IMPLEMENT_INTEGER_ICMP(eq,Ty);
+ IMPLEMENT_VECTOR_INTEGER_ICMP(eq,Ty);
+ IMPLEMENT_POINTER_ICMP(==);
default:
- cout << "Unhandled type for And instruction: " << Ty << "\n";
+ dbgs() << "Unhandled type for ICMP_EQ predicate: " << *Ty << "\n";
+ llvm_unreachable(nullptr);
}
return Dest;
}
-
-static GenericValue executeOrInst(GenericValue Src1, GenericValue Src2,
- const Type *Ty, ExecutionContext &SF) {
+static GenericValue executeICMP_NE(GenericValue Src1, GenericValue Src2,
+ Type *Ty) {
GenericValue Dest;
- switch (Ty->getPrimitiveID()) {
- IMPLEMENT_BINARY_OPERATOR(|, UByte);
- IMPLEMENT_BINARY_OPERATOR(|, SByte);
- IMPLEMENT_BINARY_OPERATOR(|, UShort);
- IMPLEMENT_BINARY_OPERATOR(|, Short);
- IMPLEMENT_BINARY_OPERATOR(|, UInt);
- IMPLEMENT_BINARY_OPERATOR(|, Int);
- IMPLEMENT_BINARY_OPERATOR(|, ULong);
- IMPLEMENT_BINARY_OPERATOR(|, Long);
- IMPLEMENT_BINARY_OPERATOR(|, Pointer);
+ switch (Ty->getTypeID()) {
+ IMPLEMENT_INTEGER_ICMP(ne,Ty);
+ IMPLEMENT_VECTOR_INTEGER_ICMP(ne,Ty);
+ IMPLEMENT_POINTER_ICMP(!=);
default:
- cout << "Unhandled type for Or instruction: " << Ty << "\n";
+ dbgs() << "Unhandled type for ICMP_NE predicate: " << *Ty << "\n";
+ llvm_unreachable(nullptr);
}
return Dest;
}
-
-static GenericValue executeXorInst(GenericValue Src1, GenericValue Src2,
- const Type *Ty, ExecutionContext &SF) {
+static GenericValue executeICMP_ULT(GenericValue Src1, GenericValue Src2,
+ Type *Ty) {
GenericValue Dest;
- switch (Ty->getPrimitiveID()) {
- IMPLEMENT_BINARY_OPERATOR(^, UByte);
- IMPLEMENT_BINARY_OPERATOR(^, SByte);
- IMPLEMENT_BINARY_OPERATOR(^, UShort);
- IMPLEMENT_BINARY_OPERATOR(^, Short);
- IMPLEMENT_BINARY_OPERATOR(^, UInt);
- IMPLEMENT_BINARY_OPERATOR(^, Int);
- IMPLEMENT_BINARY_OPERATOR(^, ULong);
- IMPLEMENT_BINARY_OPERATOR(^, Long);
- IMPLEMENT_BINARY_OPERATOR(^, Pointer);
+ switch (Ty->getTypeID()) {
+ IMPLEMENT_INTEGER_ICMP(ult,Ty);
+ IMPLEMENT_VECTOR_INTEGER_ICMP(ult,Ty);
+ IMPLEMENT_POINTER_ICMP(<);
default:
- cout << "Unhandled type for Xor instruction: " << Ty << "\n";
+ dbgs() << "Unhandled type for ICMP_ULT predicate: " << *Ty << "\n";
+ llvm_unreachable(nullptr);
}
return Dest;
}
-
-#define IMPLEMENT_SETCC(OP, TY) \
- case Type::TY##TyID: Dest.BoolVal = Src1.TY##Val OP Src2.TY##Val; break
-
-static GenericValue executeSetEQInst(GenericValue Src1, GenericValue Src2,
- const Type *Ty, ExecutionContext &SF) {
+static GenericValue executeICMP_SLT(GenericValue Src1, GenericValue Src2,
+ Type *Ty) {
GenericValue Dest;
- switch (Ty->getPrimitiveID()) {
- IMPLEMENT_SETCC(==, UByte);
- IMPLEMENT_SETCC(==, SByte);
- IMPLEMENT_SETCC(==, UShort);
- IMPLEMENT_SETCC(==, Short);
- IMPLEMENT_SETCC(==, UInt);
- IMPLEMENT_SETCC(==, Int);
- IMPLEMENT_SETCC(==, ULong);
- IMPLEMENT_SETCC(==, Long);
- IMPLEMENT_SETCC(==, Float);
- IMPLEMENT_SETCC(==, Double);
- IMPLEMENT_SETCC(==, Pointer);
+ switch (Ty->getTypeID()) {
+ IMPLEMENT_INTEGER_ICMP(slt,Ty);
+ IMPLEMENT_VECTOR_INTEGER_ICMP(slt,Ty);
+ IMPLEMENT_POINTER_ICMP(<);
default:
- cout << "Unhandled type for SetEQ instruction: " << Ty << "\n";
+ dbgs() << "Unhandled type for ICMP_SLT predicate: " << *Ty << "\n";
+ llvm_unreachable(nullptr);
}
return Dest;
}
-static GenericValue executeSetNEInst(GenericValue Src1, GenericValue Src2,
- const Type *Ty, ExecutionContext &SF) {
+static GenericValue executeICMP_UGT(GenericValue Src1, GenericValue Src2,
+ Type *Ty) {
GenericValue Dest;
- switch (Ty->getPrimitiveID()) {
- IMPLEMENT_SETCC(!=, UByte);
- IMPLEMENT_SETCC(!=, SByte);
- IMPLEMENT_SETCC(!=, UShort);
- IMPLEMENT_SETCC(!=, Short);
- IMPLEMENT_SETCC(!=, UInt);
- IMPLEMENT_SETCC(!=, Int);
- IMPLEMENT_SETCC(!=, ULong);
- IMPLEMENT_SETCC(!=, Long);
- IMPLEMENT_SETCC(!=, Float);
- IMPLEMENT_SETCC(!=, Double);
- IMPLEMENT_SETCC(!=, Pointer);
+ switch (Ty->getTypeID()) {
+ IMPLEMENT_INTEGER_ICMP(ugt,Ty);
+ IMPLEMENT_VECTOR_INTEGER_ICMP(ugt,Ty);
+ IMPLEMENT_POINTER_ICMP(>);
+ default:
+ dbgs() << "Unhandled type for ICMP_UGT predicate: " << *Ty << "\n";
+ llvm_unreachable(nullptr);
+ }
+ return Dest;
+}
+static GenericValue executeICMP_SGT(GenericValue Src1, GenericValue Src2,
+ Type *Ty) {
+ GenericValue Dest;
+ switch (Ty->getTypeID()) {
+ IMPLEMENT_INTEGER_ICMP(sgt,Ty);
+ IMPLEMENT_VECTOR_INTEGER_ICMP(sgt,Ty);
+ IMPLEMENT_POINTER_ICMP(>);
default:
- cout << "Unhandled type for SetNE instruction: " << Ty << "\n";
+ dbgs() << "Unhandled type for ICMP_SGT predicate: " << *Ty << "\n";
+ llvm_unreachable(nullptr);
}
return Dest;
}
-static GenericValue executeSetLEInst(GenericValue Src1, GenericValue Src2,
- const Type *Ty, ExecutionContext &SF) {
+static GenericValue executeICMP_ULE(GenericValue Src1, GenericValue Src2,
+ Type *Ty) {
GenericValue Dest;
- switch (Ty->getPrimitiveID()) {
- IMPLEMENT_SETCC(<=, UByte);
- IMPLEMENT_SETCC(<=, SByte);
- IMPLEMENT_SETCC(<=, UShort);
- IMPLEMENT_SETCC(<=, Short);
- IMPLEMENT_SETCC(<=, UInt);
- IMPLEMENT_SETCC(<=, Int);
- IMPLEMENT_SETCC(<=, ULong);
- IMPLEMENT_SETCC(<=, Long);
- IMPLEMENT_SETCC(<=, Float);
- IMPLEMENT_SETCC(<=, Double);
- IMPLEMENT_SETCC(<=, Pointer);
+ switch (Ty->getTypeID()) {
+ IMPLEMENT_INTEGER_ICMP(ule,Ty);
+ IMPLEMENT_VECTOR_INTEGER_ICMP(ule,Ty);
+ IMPLEMENT_POINTER_ICMP(<=);
default:
- cout << "Unhandled type for SetLE instruction: " << Ty << "\n";
+ dbgs() << "Unhandled type for ICMP_ULE predicate: " << *Ty << "\n";
+ llvm_unreachable(nullptr);
}
return Dest;
}
-static GenericValue executeSetGEInst(GenericValue Src1, GenericValue Src2,
- const Type *Ty, ExecutionContext &SF) {
+static GenericValue executeICMP_SLE(GenericValue Src1, GenericValue Src2,
+ Type *Ty) {
GenericValue Dest;
- switch (Ty->getPrimitiveID()) {
- IMPLEMENT_SETCC(>=, UByte);
- IMPLEMENT_SETCC(>=, SByte);
- IMPLEMENT_SETCC(>=, UShort);
- IMPLEMENT_SETCC(>=, Short);
- IMPLEMENT_SETCC(>=, UInt);
- IMPLEMENT_SETCC(>=, Int);
- IMPLEMENT_SETCC(>=, ULong);
- IMPLEMENT_SETCC(>=, Long);
- IMPLEMENT_SETCC(>=, Float);
- IMPLEMENT_SETCC(>=, Double);
- IMPLEMENT_SETCC(>=, Pointer);
+ switch (Ty->getTypeID()) {
+ IMPLEMENT_INTEGER_ICMP(sle,Ty);
+ IMPLEMENT_VECTOR_INTEGER_ICMP(sle,Ty);
+ IMPLEMENT_POINTER_ICMP(<=);
default:
- cout << "Unhandled type for SetGE instruction: " << Ty << "\n";
+ dbgs() << "Unhandled type for ICMP_SLE predicate: " << *Ty << "\n";
+ llvm_unreachable(nullptr);
}
return Dest;
}
-static GenericValue executeSetLTInst(GenericValue Src1, GenericValue Src2,
- const Type *Ty, ExecutionContext &SF) {
+static GenericValue executeICMP_UGE(GenericValue Src1, GenericValue Src2,
+ Type *Ty) {
GenericValue Dest;
- switch (Ty->getPrimitiveID()) {
- IMPLEMENT_SETCC(<, UByte);
- IMPLEMENT_SETCC(<, SByte);
- IMPLEMENT_SETCC(<, UShort);
- IMPLEMENT_SETCC(<, Short);
- IMPLEMENT_SETCC(<, UInt);
- IMPLEMENT_SETCC(<, Int);
- IMPLEMENT_SETCC(<, ULong);
- IMPLEMENT_SETCC(<, Long);
- IMPLEMENT_SETCC(<, Float);
- IMPLEMENT_SETCC(<, Double);
- IMPLEMENT_SETCC(<, Pointer);
+ switch (Ty->getTypeID()) {
+ IMPLEMENT_INTEGER_ICMP(uge,Ty);
+ IMPLEMENT_VECTOR_INTEGER_ICMP(uge,Ty);
+ IMPLEMENT_POINTER_ICMP(>=);
default:
- cout << "Unhandled type for SetLT instruction: " << Ty << "\n";
+ dbgs() << "Unhandled type for ICMP_UGE predicate: " << *Ty << "\n";
+ llvm_unreachable(nullptr);
}
return Dest;
}
-static GenericValue executeSetGTInst(GenericValue Src1, GenericValue Src2,
- const Type *Ty, ExecutionContext &SF) {
+static GenericValue executeICMP_SGE(GenericValue Src1, GenericValue Src2,
+ Type *Ty) {
GenericValue Dest;
- switch (Ty->getPrimitiveID()) {
- IMPLEMENT_SETCC(>, UByte);
- IMPLEMENT_SETCC(>, SByte);
- IMPLEMENT_SETCC(>, UShort);
- IMPLEMENT_SETCC(>, Short);
- IMPLEMENT_SETCC(>, UInt);
- IMPLEMENT_SETCC(>, Int);
- IMPLEMENT_SETCC(>, ULong);
- IMPLEMENT_SETCC(>, Long);
- IMPLEMENT_SETCC(>, Float);
- IMPLEMENT_SETCC(>, Double);
- IMPLEMENT_SETCC(>, Pointer);
+ switch (Ty->getTypeID()) {
+ IMPLEMENT_INTEGER_ICMP(sge,Ty);
+ IMPLEMENT_VECTOR_INTEGER_ICMP(sge,Ty);
+ IMPLEMENT_POINTER_ICMP(>=);
default:
- cout << "Unhandled type for SetGT instruction: " << Ty << "\n";
+ dbgs() << "Unhandled type for ICMP_SGE predicate: " << *Ty << "\n";
+ llvm_unreachable(nullptr);
}
return Dest;
}
-static void executeBinaryInst(BinaryOperator &I, ExecutionContext &SF) {
- const Type *Ty = I.getOperand(0)->getType();
+void Interpreter::visitICmpInst(ICmpInst &I) {
+ ExecutionContext &SF = ECStack.back();
+ Type *Ty = I.getOperand(0)->getType();
GenericValue Src1 = getOperandValue(I.getOperand(0), SF);
GenericValue Src2 = getOperandValue(I.getOperand(1), SF);
GenericValue R; // Result
-
- switch (I.getOpcode()) {
- case Instruction::Add: R = executeAddInst (Src1, Src2, Ty, SF); break;
- case Instruction::Sub: R = executeSubInst (Src1, Src2, Ty, SF); break;
- case Instruction::Mul: R = executeMulInst (Src1, Src2, Ty, SF); break;
- case Instruction::Div: R = executeDivInst (Src1, Src2, Ty, SF); break;
- case Instruction::Rem: R = executeRemInst (Src1, Src2, Ty, SF); break;
- case Instruction::And: R = executeAndInst (Src1, Src2, Ty, SF); break;
- case Instruction::Or: R = executeOrInst (Src1, Src2, Ty, SF); break;
- case Instruction::Xor: R = executeXorInst (Src1, Src2, Ty, SF); break;
- case Instruction::SetEQ: R = executeSetEQInst(Src1, Src2, Ty, SF); break;
- case Instruction::SetNE: R = executeSetNEInst(Src1, Src2, Ty, SF); break;
- case Instruction::SetLE: R = executeSetLEInst(Src1, Src2, Ty, SF); break;
- case Instruction::SetGE: R = executeSetGEInst(Src1, Src2, Ty, SF); break;
- case Instruction::SetLT: R = executeSetLTInst(Src1, Src2, Ty, SF); break;
- case Instruction::SetGT: R = executeSetGTInst(Src1, Src2, Ty, SF); break;
+
+ switch (I.getPredicate()) {
+ case ICmpInst::ICMP_EQ: R = executeICMP_EQ(Src1, Src2, Ty); break;
+ case ICmpInst::ICMP_NE: R = executeICMP_NE(Src1, Src2, Ty); break;
+ case ICmpInst::ICMP_ULT: R = executeICMP_ULT(Src1, Src2, Ty); break;
+ case ICmpInst::ICMP_SLT: R = executeICMP_SLT(Src1, Src2, Ty); break;
+ case ICmpInst::ICMP_UGT: R = executeICMP_UGT(Src1, Src2, Ty); break;
+ case ICmpInst::ICMP_SGT: R = executeICMP_SGT(Src1, Src2, Ty); break;
+ case ICmpInst::ICMP_ULE: R = executeICMP_ULE(Src1, Src2, Ty); break;
+ case ICmpInst::ICMP_SLE: R = executeICMP_SLE(Src1, Src2, Ty); break;
+ case ICmpInst::ICMP_UGE: R = executeICMP_UGE(Src1, Src2, Ty); break;
+ case ICmpInst::ICMP_SGE: R = executeICMP_SGE(Src1, Src2, Ty); break;
default:
- cout << "Don't know how to handle this binary operator!\n-->" << I;
- R = Src1;
+ dbgs() << "Don't know how to handle this ICmp predicate!\n-->" << I;
+ llvm_unreachable(nullptr);
}
-
+
SetValue(&I, R, SF);
}
-//===----------------------------------------------------------------------===//
-// Terminator Instruction Implementations
-//===----------------------------------------------------------------------===//
-
-static void PerformExitStuff() {
-#ifdef PROFILE_STRUCTURE_FIELDS
- // Print out structure field accounting information...
- if (!FieldAccessCounts.empty()) {
- CW << "Profile Field Access Counts:\n";
- std::map<const StructType *, vector<unsigned> >::iterator
- I = FieldAccessCounts.begin(), E = FieldAccessCounts.end();
- for (; I != E; ++I) {
- vector<unsigned> &OfC = I->second;
- CW << " '" << (Value*)I->first << "'\t- Sum=";
-
- unsigned Sum = 0;
- for (unsigned i = 0; i < OfC.size(); ++i)
- Sum += OfC[i];
- CW << Sum << " - ";
-
- for (unsigned i = 0; i < OfC.size(); ++i) {
- if (i) CW << ", ";
- CW << OfC[i];
- }
- CW << "\n";
- }
- CW << "\n";
-
- CW << "Profile Field Access Percentages:\n";
- cout.precision(3);
- for (I = FieldAccessCounts.begin(); I != E; ++I) {
- vector<unsigned> &OfC = I->second;
- unsigned Sum = 0;
- for (unsigned i = 0; i < OfC.size(); ++i)
- Sum += OfC[i];
-
- CW << " '" << (Value*)I->first << "'\t- ";
- for (unsigned i = 0; i < OfC.size(); ++i) {
- if (i) CW << ", ";
- CW << double(OfC[i])/Sum;
- }
- CW << "\n";
+#define IMPLEMENT_FCMP(OP, TY) \
+ case Type::TY##TyID: \
+ Dest.IntVal = APInt(1,Src1.TY##Val OP Src2.TY##Val); \
+ break
+
+#define IMPLEMENT_VECTOR_FCMP_T(OP, TY) \
+ assert(Src1.AggregateVal.size() == Src2.AggregateVal.size()); \
+ Dest.AggregateVal.resize( Src1.AggregateVal.size() ); \
+ for( uint32_t _i=0;_i<Src1.AggregateVal.size();_i++) \
+ Dest.AggregateVal[_i].IntVal = APInt(1, \
+ Src1.AggregateVal[_i].TY##Val OP Src2.AggregateVal[_i].TY##Val);\
+ break;
+
+#define IMPLEMENT_VECTOR_FCMP(OP) \
+ case Type::VectorTyID: \
+ if(dyn_cast<VectorType>(Ty)->getElementType()->isFloatTy()) { \
+ IMPLEMENT_VECTOR_FCMP_T(OP, Float); \
+ } else { \
+ IMPLEMENT_VECTOR_FCMP_T(OP, Double); \
}
- CW << "\n";
- FieldAccessCounts.clear();
+static GenericValue executeFCMP_OEQ(GenericValue Src1, GenericValue Src2,
+ Type *Ty) {
+ GenericValue Dest;
+ switch (Ty->getTypeID()) {
+ IMPLEMENT_FCMP(==, Float);
+ IMPLEMENT_FCMP(==, Double);
+ IMPLEMENT_VECTOR_FCMP(==);
+ default:
+ dbgs() << "Unhandled type for FCmp EQ instruction: " << *Ty << "\n";
+ llvm_unreachable(nullptr);
}
-#endif
+ return Dest;
}
-void Interpreter::exitCalled(GenericValue GV) {
- if (!QuietMode) {
- cout << "Program returned ";
- print(Type::IntTy, GV);
- cout << " via 'void exit(int)'\n";
+#define IMPLEMENT_SCALAR_NANS(TY, X,Y) \
+ if (TY->isFloatTy()) { \
+ if (X.FloatVal != X.FloatVal || Y.FloatVal != Y.FloatVal) { \
+ Dest.IntVal = APInt(1,false); \
+ return Dest; \
+ } \
+ } else { \
+ if (X.DoubleVal != X.DoubleVal || Y.DoubleVal != Y.DoubleVal) { \
+ Dest.IntVal = APInt(1,false); \
+ return Dest; \
+ } \
}
- ExitCode = GV.SByteVal;
- ECStack.clear();
- PerformExitStuff();
-}
-
-void Interpreter::executeRetInst(ReturnInst &I, ExecutionContext &SF) {
- const Type *RetTy = 0;
- GenericValue Result;
-
- // Save away the return value... (if we are not 'ret void')
- if (I.getNumOperands()) {
- RetTy = I.getReturnValue()->getType();
- Result = getOperandValue(I.getReturnValue(), SF);
+#define MASK_VECTOR_NANS_T(X,Y, TZ, FLAG) \
+ assert(X.AggregateVal.size() == Y.AggregateVal.size()); \
+ Dest.AggregateVal.resize( X.AggregateVal.size() ); \
+ for( uint32_t _i=0;_i<X.AggregateVal.size();_i++) { \
+ if (X.AggregateVal[_i].TZ##Val != X.AggregateVal[_i].TZ##Val || \
+ Y.AggregateVal[_i].TZ##Val != Y.AggregateVal[_i].TZ##Val) \
+ Dest.AggregateVal[_i].IntVal = APInt(1,FLAG); \
+ else { \
+ Dest.AggregateVal[_i].IntVal = APInt(1,!FLAG); \
+ } \
}
- // Save previously executing meth
- const Function *M = ECStack.back().CurMethod;
-
- // Pop the current stack frame... this invalidates SF
- ECStack.pop_back();
+#define MASK_VECTOR_NANS(TY, X,Y, FLAG) \
+ if (TY->isVectorTy()) { \
+ if (dyn_cast<VectorType>(TY)->getElementType()->isFloatTy()) { \
+ MASK_VECTOR_NANS_T(X, Y, Float, FLAG) \
+ } else { \
+ MASK_VECTOR_NANS_T(X, Y, Double, FLAG) \
+ } \
+ } \
- if (ECStack.empty()) { // Finished main. Put result into exit code...
- if (RetTy) { // Nonvoid return type?
- if (!QuietMode) {
- CW << "Function " << M->getType() << " \"" << M->getName()
- << "\" returned ";
- print(RetTy, Result);
- cout << "\n";
- }
- if (RetTy->isIntegral())
- ExitCode = Result.IntVal; // Capture the exit code of the program
- } else {
- ExitCode = 0;
- }
- PerformExitStuff();
- return;
+static GenericValue executeFCMP_ONE(GenericValue Src1, GenericValue Src2,
+ Type *Ty)
+{
+ GenericValue Dest;
+ // if input is scalar value and Src1 or Src2 is NaN return false
+ IMPLEMENT_SCALAR_NANS(Ty, Src1, Src2)
+ // if vector input detect NaNs and fill mask
+ MASK_VECTOR_NANS(Ty, Src1, Src2, false)
+ GenericValue DestMask = Dest;
+ switch (Ty->getTypeID()) {
+ IMPLEMENT_FCMP(!=, Float);
+ IMPLEMENT_FCMP(!=, Double);
+ IMPLEMENT_VECTOR_FCMP(!=);
+ default:
+ dbgs() << "Unhandled type for FCmp NE instruction: " << *Ty << "\n";
+ llvm_unreachable(nullptr);
}
+ // in vector case mask out NaN elements
+ if (Ty->isVectorTy())
+ for( size_t _i=0; _i<Src1.AggregateVal.size(); _i++)
+ if (DestMask.AggregateVal[_i].IntVal == false)
+ Dest.AggregateVal[_i].IntVal = APInt(1,false);
- // If we have a previous stack frame, and we have a previous call, fill in
- // the return value...
- //
- ExecutionContext &NewSF = ECStack.back();
- if (NewSF.Caller) {
- if (NewSF.Caller->getType() != Type::VoidTy) // Save result...
- SetValue(NewSF.Caller, Result, NewSF);
+ return Dest;
+}
- NewSF.Caller = 0; // We returned from the call...
- } else if (!QuietMode) {
- // This must be a function that is executing because of a user 'call'
- // instruction.
- CW << "Function " << M->getType() << " \"" << M->getName()
- << "\" returned ";
- print(RetTy, Result);
- cout << "\n";
+static GenericValue executeFCMP_OLE(GenericValue Src1, GenericValue Src2,
+ Type *Ty) {
+ GenericValue Dest;
+ switch (Ty->getTypeID()) {
+ IMPLEMENT_FCMP(<=, Float);
+ IMPLEMENT_FCMP(<=, Double);
+ IMPLEMENT_VECTOR_FCMP(<=);
+ default:
+ dbgs() << "Unhandled type for FCmp LE instruction: " << *Ty << "\n";
+ llvm_unreachable(nullptr);
}
+ return Dest;
}
-void Interpreter::executeBrInst(BranchInst &I, ExecutionContext &SF) {
- SF.PrevBB = SF.CurBB; // Update PrevBB so that PHI nodes work...
- BasicBlock *Dest;
+static GenericValue executeFCMP_OGE(GenericValue Src1, GenericValue Src2,
+ Type *Ty) {
+ GenericValue Dest;
+ switch (Ty->getTypeID()) {
+ IMPLEMENT_FCMP(>=, Float);
+ IMPLEMENT_FCMP(>=, Double);
+ IMPLEMENT_VECTOR_FCMP(>=);
+ default:
+ dbgs() << "Unhandled type for FCmp GE instruction: " << *Ty << "\n";
+ llvm_unreachable(nullptr);
+ }
+ return Dest;
+}
- Dest = I.getSuccessor(0); // Uncond branches have a fixed dest...
- if (!I.isUnconditional()) {
- Value *Cond = I.getCondition();
- GenericValue CondVal = getOperandValue(Cond, SF);
- if (CondVal.BoolVal == 0) // If false cond...
- Dest = I.getSuccessor(1);
+static GenericValue executeFCMP_OLT(GenericValue Src1, GenericValue Src2,
+ Type *Ty) {
+ GenericValue Dest;
+ switch (Ty->getTypeID()) {
+ IMPLEMENT_FCMP(<, Float);
+ IMPLEMENT_FCMP(<, Double);
+ IMPLEMENT_VECTOR_FCMP(<);
+ default:
+ dbgs() << "Unhandled type for FCmp LT instruction: " << *Ty << "\n";
+ llvm_unreachable(nullptr);
}
- SF.CurBB = Dest; // Update CurBB to branch destination
- SF.CurInst = SF.CurBB->begin(); // Update new instruction ptr...
+ return Dest;
}
-//===----------------------------------------------------------------------===//
-// Memory Instruction Implementations
-//===----------------------------------------------------------------------===//
+static GenericValue executeFCMP_OGT(GenericValue Src1, GenericValue Src2,
+ Type *Ty) {
+ GenericValue Dest;
+ switch (Ty->getTypeID()) {
+ IMPLEMENT_FCMP(>, Float);
+ IMPLEMENT_FCMP(>, Double);
+ IMPLEMENT_VECTOR_FCMP(>);
+ default:
+ dbgs() << "Unhandled type for FCmp GT instruction: " << *Ty << "\n";
+ llvm_unreachable(nullptr);
+ }
+ return Dest;
+}
-void Interpreter::executeAllocInst(AllocationInst &I, ExecutionContext &SF) {
- const Type *Ty = I.getType()->getElementType(); // Type to be allocated
+#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; \
+ }
- // Get the number of elements being allocated by the array...
- unsigned NumElements = getOperandValue(I.getOperand(0), SF).UIntVal;
+#define IMPLEMENT_VECTOR_UNORDERED(TY, X,Y, _FUNC) \
+ if (TY->isVectorTy()) { \
+ GenericValue DestMask = Dest; \
+ Dest = _FUNC(Src1, Src2, Ty); \
+ for( size_t _i=0; _i<Src1.AggregateVal.size(); _i++) \
+ if (DestMask.AggregateVal[_i].IntVal == true) \
+ Dest.AggregateVal[_i].IntVal = APInt(1,true); \
+ return Dest; \
+ }
- // Allocate enough memory to hold the type...
- // FIXME: Don't use CALLOC, use a tainted malloc.
- void *Memory = calloc(NumElements, TD.getTypeSize(Ty));
+static GenericValue executeFCMP_UEQ(GenericValue Src1, GenericValue Src2,
+ Type *Ty) {
+ GenericValue Dest;
+ IMPLEMENT_UNORDERED(Ty, Src1, Src2)
+ MASK_VECTOR_NANS(Ty, Src1, Src2, true)
+ IMPLEMENT_VECTOR_UNORDERED(Ty, Src1, Src2, executeFCMP_OEQ)
+ return executeFCMP_OEQ(Src1, Src2, Ty);
- GenericValue Result;
- Result.PointerVal = (PointerTy)Memory;
- assert(Result.PointerVal != 0 && "Null pointer returned by malloc!");
- SetValue(&I, Result, SF);
+}
- if (I.getOpcode() == Instruction::Alloca)
- ECStack.back().Allocas.add(Memory);
+static GenericValue executeFCMP_UNE(GenericValue Src1, GenericValue Src2,
+ Type *Ty) {
+ GenericValue Dest;
+ IMPLEMENT_UNORDERED(Ty, Src1, Src2)
+ MASK_VECTOR_NANS(Ty, Src1, Src2, true)
+ IMPLEMENT_VECTOR_UNORDERED(Ty, Src1, Src2, executeFCMP_ONE)
+ return executeFCMP_ONE(Src1, Src2, Ty);
}
-static void executeFreeInst(FreeInst &I, ExecutionContext &SF) {
- assert(isa<PointerType>(I.getOperand(0)->getType()) && "Freeing nonptr?");
- GenericValue Value = getOperandValue(I.getOperand(0), SF);
- // TODO: Check to make sure memory is allocated
- free((void*)Value.PointerVal); // Free memory
+static GenericValue executeFCMP_ULE(GenericValue Src1, GenericValue Src2,
+ Type *Ty) {
+ GenericValue Dest;
+ IMPLEMENT_UNORDERED(Ty, Src1, Src2)
+ MASK_VECTOR_NANS(Ty, Src1, Src2, true)
+ IMPLEMENT_VECTOR_UNORDERED(Ty, Src1, Src2, executeFCMP_OLE)
+ return executeFCMP_OLE(Src1, Src2, Ty);
}
+static GenericValue executeFCMP_UGE(GenericValue Src1, GenericValue Src2,
+ Type *Ty) {
+ GenericValue Dest;
+ IMPLEMENT_UNORDERED(Ty, Src1, Src2)
+ MASK_VECTOR_NANS(Ty, Src1, Src2, true)
+ IMPLEMENT_VECTOR_UNORDERED(Ty, Src1, Src2, executeFCMP_OGE)
+ return executeFCMP_OGE(Src1, Src2, Ty);
+}
-// getElementOffset - The workhorse for getelementptr.
-//
-static GenericValue executeGEPOperation(Value *Ptr, User::op_iterator I,
- User::op_iterator E,
- ExecutionContext &SF) {
- assert(isa<PointerType>(Ptr->getType()) &&
- "Cannot getElementOffset of a nonpointer type!");
+static GenericValue executeFCMP_ULT(GenericValue Src1, GenericValue Src2,
+ Type *Ty) {
+ GenericValue Dest;
+ IMPLEMENT_UNORDERED(Ty, Src1, Src2)
+ MASK_VECTOR_NANS(Ty, Src1, Src2, true)
+ IMPLEMENT_VECTOR_UNORDERED(Ty, Src1, Src2, executeFCMP_OLT)
+ return executeFCMP_OLT(Src1, Src2, Ty);
+}
- PointerTy Total = 0;
- const Type *Ty = Ptr->getType();
+static GenericValue executeFCMP_UGT(GenericValue Src1, GenericValue Src2,
+ Type *Ty) {
+ GenericValue Dest;
+ IMPLEMENT_UNORDERED(Ty, Src1, Src2)
+ MASK_VECTOR_NANS(Ty, Src1, Src2, true)
+ IMPLEMENT_VECTOR_UNORDERED(Ty, Src1, Src2, executeFCMP_OGT)
+ return executeFCMP_OGT(Src1, Src2, Ty);
+}
- for (; I != E; ++I) {
- if (const StructType *STy = dyn_cast<StructType>(Ty)) {
- const StructLayout *SLO = TD.getStructLayout(STy);
-
- // Indicies must be ubyte constants...
- const ConstantUInt *CPU = cast<ConstantUInt>(*I);
- assert(CPU->getType() == Type::UByteTy);
- unsigned Index = CPU->getValue();
-
-#ifdef PROFILE_STRUCTURE_FIELDS
- if (ProfileStructureFields) {
- // Do accounting for this field...
- vector<unsigned> &OfC = FieldAccessCounts[STy];
- if (OfC.size() == 0) OfC.resize(STy->getElementTypes().size());
- OfC[Index]++;
- }
-#endif
-
- Total += SLO->MemberOffsets[Index];
- Ty = STy->getElementTypes()[Index];
- } else if (const SequentialType *ST = cast<SequentialType>(Ty)) {
-
- // Get the index number for the array... which must be uint type...
- assert((*I)->getType() == Type::LongTy);
- unsigned Idx = getOperandValue(*I, SF).LongVal;
- if (const ArrayType *AT = dyn_cast<ArrayType>(ST))
- if (Idx >= AT->getNumElements() && ArrayChecksEnabled) {
- cerr << "Out of range memory access to element #" << Idx
- << " of a " << AT->getNumElements() << " element array."
- << " Subscript #" << *I << "\n";
- // Get outta here!!!
- siglongjmp(SignalRecoverBuffer, SIGTRAP);
- }
+static GenericValue executeFCMP_ORD(GenericValue Src1, GenericValue Src2,
+ Type *Ty) {
+ GenericValue Dest;
+ if(Ty->isVectorTy()) {
+ assert(Src1.AggregateVal.size() == Src2.AggregateVal.size());
+ Dest.AggregateVal.resize( Src1.AggregateVal.size() );
+ if(dyn_cast<VectorType>(Ty)->getElementType()->isFloatTy()) {
+ for( size_t _i=0;_i<Src1.AggregateVal.size();_i++)
+ Dest.AggregateVal[_i].IntVal = APInt(1,
+ ( (Src1.AggregateVal[_i].FloatVal ==
+ Src1.AggregateVal[_i].FloatVal) &&
+ (Src2.AggregateVal[_i].FloatVal ==
+ Src2.AggregateVal[_i].FloatVal)));
+ } else {
+ for( size_t _i=0;_i<Src1.AggregateVal.size();_i++)
+ Dest.AggregateVal[_i].IntVal = APInt(1,
+ ( (Src1.AggregateVal[_i].DoubleVal ==
+ Src1.AggregateVal[_i].DoubleVal) &&
+ (Src2.AggregateVal[_i].DoubleVal ==
+ Src2.AggregateVal[_i].DoubleVal)));
+ }
+ } else if (Ty->isFloatTy())
+ Dest.IntVal = APInt(1,(Src1.FloatVal == Src1.FloatVal &&
+ Src2.FloatVal == Src2.FloatVal));
+ else {
+ Dest.IntVal = APInt(1,(Src1.DoubleVal == Src1.DoubleVal &&
+ Src2.DoubleVal == Src2.DoubleVal));
+ }
+ return Dest;
+}
- Ty = ST->getElementType();
- unsigned Size = TD.getTypeSize(Ty);
- Total += Size*Idx;
- }
+static GenericValue executeFCMP_UNO(GenericValue Src1, GenericValue Src2,
+ Type *Ty) {
+ GenericValue Dest;
+ if(Ty->isVectorTy()) {
+ assert(Src1.AggregateVal.size() == Src2.AggregateVal.size());
+ Dest.AggregateVal.resize( Src1.AggregateVal.size() );
+ if(dyn_cast<VectorType>(Ty)->getElementType()->isFloatTy()) {
+ for( size_t _i=0;_i<Src1.AggregateVal.size();_i++)
+ Dest.AggregateVal[_i].IntVal = APInt(1,
+ ( (Src1.AggregateVal[_i].FloatVal !=
+ Src1.AggregateVal[_i].FloatVal) ||
+ (Src2.AggregateVal[_i].FloatVal !=
+ Src2.AggregateVal[_i].FloatVal)));
+ } else {
+ for( size_t _i=0;_i<Src1.AggregateVal.size();_i++)
+ Dest.AggregateVal[_i].IntVal = APInt(1,
+ ( (Src1.AggregateVal[_i].DoubleVal !=
+ Src1.AggregateVal[_i].DoubleVal) ||
+ (Src2.AggregateVal[_i].DoubleVal !=
+ Src2.AggregateVal[_i].DoubleVal)));
+ }
+ } else if (Ty->isFloatTy())
+ Dest.IntVal = APInt(1,(Src1.FloatVal != Src1.FloatVal ||
+ Src2.FloatVal != Src2.FloatVal));
+ else {
+ Dest.IntVal = APInt(1,(Src1.DoubleVal != Src1.DoubleVal ||
+ Src2.DoubleVal != Src2.DoubleVal));
}
+ return Dest;
+}
- GenericValue Result;
- Result.PointerVal = getOperandValue(Ptr, SF).PointerVal + Total;
- return Result;
+static GenericValue executeFCMP_BOOL(GenericValue Src1, GenericValue Src2,
+ const Type *Ty, const bool val) {
+ GenericValue Dest;
+ if(Ty->isVectorTy()) {
+ assert(Src1.AggregateVal.size() == Src2.AggregateVal.size());
+ Dest.AggregateVal.resize( Src1.AggregateVal.size() );
+ for( size_t _i=0; _i<Src1.AggregateVal.size(); _i++)
+ Dest.AggregateVal[_i].IntVal = APInt(1,val);
+ } else {
+ Dest.IntVal = APInt(1, val);
+ }
+
+ return Dest;
}
-static void executeGEPInst(GetElementPtrInst &I, ExecutionContext &SF) {
- SetValue(&I, executeGEPOperation(I.getPointerOperand(),
- I.idx_begin(), I.idx_end(), SF), SF);
+void Interpreter::visitFCmpInst(FCmpInst &I) {
+ ExecutionContext &SF = ECStack.back();
+ Type *Ty = I.getOperand(0)->getType();
+ GenericValue Src1 = getOperandValue(I.getOperand(0), SF);
+ GenericValue Src2 = getOperandValue(I.getOperand(1), SF);
+ GenericValue R; // Result
+
+ switch (I.getPredicate()) {
+ default:
+ dbgs() << "Don't know how to handle this FCmp predicate!\n-->" << I;
+ llvm_unreachable(nullptr);
+ break;
+ case FCmpInst::FCMP_FALSE: R = executeFCMP_BOOL(Src1, Src2, Ty, false);
+ break;
+ case FCmpInst::FCMP_TRUE: R = executeFCMP_BOOL(Src1, Src2, Ty, true);
+ break;
+ case FCmpInst::FCMP_ORD: R = executeFCMP_ORD(Src1, Src2, Ty); break;
+ case FCmpInst::FCMP_UNO: R = executeFCMP_UNO(Src1, Src2, Ty); break;
+ case FCmpInst::FCMP_UEQ: R = executeFCMP_UEQ(Src1, Src2, Ty); break;
+ case FCmpInst::FCMP_OEQ: R = executeFCMP_OEQ(Src1, Src2, Ty); break;
+ case FCmpInst::FCMP_UNE: R = executeFCMP_UNE(Src1, Src2, Ty); break;
+ case FCmpInst::FCMP_ONE: R = executeFCMP_ONE(Src1, Src2, Ty); break;
+ case FCmpInst::FCMP_ULT: R = executeFCMP_ULT(Src1, Src2, Ty); break;
+ case FCmpInst::FCMP_OLT: R = executeFCMP_OLT(Src1, Src2, Ty); break;
+ case FCmpInst::FCMP_UGT: R = executeFCMP_UGT(Src1, Src2, Ty); break;
+ case FCmpInst::FCMP_OGT: R = executeFCMP_OGT(Src1, Src2, Ty); break;
+ case FCmpInst::FCMP_ULE: R = executeFCMP_ULE(Src1, Src2, Ty); break;
+ case FCmpInst::FCMP_OLE: R = executeFCMP_OLE(Src1, Src2, Ty); break;
+ case FCmpInst::FCMP_UGE: R = executeFCMP_UGE(Src1, Src2, Ty); break;
+ case FCmpInst::FCMP_OGE: R = executeFCMP_OGE(Src1, Src2, Ty); break;
+ }
+
+ SetValue(&I, R, SF);
}
-static void executeLoadInst(LoadInst &I, ExecutionContext &SF) {
- GenericValue SRC = getOperandValue(I.getPointerOperand(), SF);
- GenericValue *Ptr = (GenericValue*)SRC.PointerVal;
+static GenericValue executeCmpInst(unsigned predicate, GenericValue Src1,
+ GenericValue Src2, Type *Ty) {
GenericValue Result;
-
- if (TD.isLittleEndian()) {
- switch (I.getType()->getPrimitiveID()) {
- case Type::BoolTyID:
- case Type::UByteTyID:
- case Type::SByteTyID: Result.Untyped[0] = Ptr->UByteVal; break;
- case Type::UShortTyID:
- case Type::ShortTyID: Result.Untyped[0] = Ptr->UShortVal & 255;
- Result.Untyped[1] = (Ptr->UShortVal >> 8) & 255;
- break;
- case Type::FloatTyID:
- case Type::UIntTyID:
- case Type::IntTyID: Result.Untyped[0] = Ptr->UIntVal & 255;
- Result.Untyped[1] = (Ptr->UIntVal >> 8) & 255;
- Result.Untyped[2] = (Ptr->UIntVal >> 16) & 255;
- Result.Untyped[3] = (Ptr->UIntVal >> 24) & 255;
- break;
- case Type::DoubleTyID:
- case Type::ULongTyID:
- case Type::LongTyID:
- case Type::PointerTyID: Result.Untyped[0] = Ptr->ULongVal & 255;
- Result.Untyped[1] = (Ptr->ULongVal >> 8) & 255;
- Result.Untyped[2] = (Ptr->ULongVal >> 16) & 255;
- Result.Untyped[3] = (Ptr->ULongVal >> 24) & 255;
- Result.Untyped[4] = (Ptr->ULongVal >> 32) & 255;
- Result.Untyped[5] = (Ptr->ULongVal >> 40) & 255;
- Result.Untyped[6] = (Ptr->ULongVal >> 48) & 255;
- Result.Untyped[7] = (Ptr->ULongVal >> 56) & 255;
- break;
- default:
- cout << "Cannot load value of type " << I.getType() << "!\n";
- }
- } else {
- switch (I.getType()->getPrimitiveID()) {
- case Type::BoolTyID:
- case Type::UByteTyID:
- case Type::SByteTyID: Result.Untyped[0] = Ptr->UByteVal; break;
- case Type::UShortTyID:
- case Type::ShortTyID: Result.Untyped[1] = Ptr->UShortVal & 255;
- Result.Untyped[0] = (Ptr->UShortVal >> 8) & 255;
- break;
- case Type::FloatTyID:
- case Type::UIntTyID:
- case Type::IntTyID: Result.Untyped[3] = Ptr->UIntVal & 255;
- Result.Untyped[2] = (Ptr->UIntVal >> 8) & 255;
- Result.Untyped[1] = (Ptr->UIntVal >> 16) & 255;
- Result.Untyped[0] = (Ptr->UIntVal >> 24) & 255;
- break;
- case Type::DoubleTyID:
- case Type::ULongTyID:
- case Type::LongTyID:
- case Type::PointerTyID: Result.Untyped[7] = Ptr->ULongVal & 255;
- Result.Untyped[6] = (Ptr->ULongVal >> 8) & 255;
- Result.Untyped[5] = (Ptr->ULongVal >> 16) & 255;
- Result.Untyped[4] = (Ptr->ULongVal >> 24) & 255;
- Result.Untyped[3] = (Ptr->ULongVal >> 32) & 255;
- Result.Untyped[2] = (Ptr->ULongVal >> 40) & 255;
- Result.Untyped[1] = (Ptr->ULongVal >> 48) & 255;
- Result.Untyped[0] = (Ptr->ULongVal >> 56) & 255;
- break;
- default:
- cout << "Cannot load value of type " << I.getType() << "!\n";
- }
+ switch (predicate) {
+ case ICmpInst::ICMP_EQ: return executeICMP_EQ(Src1, Src2, Ty);
+ case ICmpInst::ICMP_NE: return executeICMP_NE(Src1, Src2, Ty);
+ case ICmpInst::ICMP_UGT: return executeICMP_UGT(Src1, Src2, Ty);
+ case ICmpInst::ICMP_SGT: return executeICMP_SGT(Src1, Src2, Ty);
+ case ICmpInst::ICMP_ULT: return executeICMP_ULT(Src1, Src2, Ty);
+ case ICmpInst::ICMP_SLT: return executeICMP_SLT(Src1, Src2, Ty);
+ case ICmpInst::ICMP_UGE: return executeICMP_UGE(Src1, Src2, Ty);
+ case ICmpInst::ICMP_SGE: return executeICMP_SGE(Src1, Src2, Ty);
+ case ICmpInst::ICMP_ULE: return executeICMP_ULE(Src1, Src2, Ty);
+ case ICmpInst::ICMP_SLE: return executeICMP_SLE(Src1, Src2, Ty);
+ case FCmpInst::FCMP_ORD: return executeFCMP_ORD(Src1, Src2, Ty);
+ case FCmpInst::FCMP_UNO: return executeFCMP_UNO(Src1, Src2, Ty);
+ case FCmpInst::FCMP_OEQ: return executeFCMP_OEQ(Src1, Src2, Ty);
+ case FCmpInst::FCMP_UEQ: return executeFCMP_UEQ(Src1, Src2, Ty);
+ case FCmpInst::FCMP_ONE: return executeFCMP_ONE(Src1, Src2, Ty);
+ case FCmpInst::FCMP_UNE: return executeFCMP_UNE(Src1, Src2, Ty);
+ case FCmpInst::FCMP_OLT: return executeFCMP_OLT(Src1, Src2, Ty);
+ case FCmpInst::FCMP_ULT: return executeFCMP_ULT(Src1, Src2, Ty);
+ case FCmpInst::FCMP_OGT: return executeFCMP_OGT(Src1, Src2, Ty);
+ case FCmpInst::FCMP_UGT: return executeFCMP_UGT(Src1, Src2, Ty);
+ case FCmpInst::FCMP_OLE: return executeFCMP_OLE(Src1, Src2, Ty);
+ case FCmpInst::FCMP_ULE: return executeFCMP_ULE(Src1, Src2, Ty);
+ case FCmpInst::FCMP_OGE: return executeFCMP_OGE(Src1, Src2, Ty);
+ case FCmpInst::FCMP_UGE: return executeFCMP_UGE(Src1, Src2, Ty);
+ case FCmpInst::FCMP_FALSE: return executeFCMP_BOOL(Src1, Src2, Ty, false);
+ case FCmpInst::FCMP_TRUE: return executeFCMP_BOOL(Src1, Src2, Ty, true);
+ default:
+ dbgs() << "Unhandled Cmp predicate\n";
+ llvm_unreachable(nullptr);
}
+}
- SetValue(&I, Result, SF);
+void Interpreter::visitBinaryOperator(BinaryOperator &I) {
+ ExecutionContext &SF = ECStack.back();
+ Type *Ty = I.getOperand(0)->getType();
+ GenericValue Src1 = getOperandValue(I.getOperand(0), SF);
+ GenericValue Src2 = getOperandValue(I.getOperand(1), SF);
+ GenericValue R; // Result
+
+ // First process vector operation
+ if (Ty->isVectorTy()) {
+ assert(Src1.AggregateVal.size() == Src2.AggregateVal.size());
+ R.AggregateVal.resize(Src1.AggregateVal.size());
+
+ // Macros to execute binary operation 'OP' over integer vectors
+#define INTEGER_VECTOR_OPERATION(OP) \
+ for (unsigned i = 0; i < R.AggregateVal.size(); ++i) \
+ R.AggregateVal[i].IntVal = \
+ Src1.AggregateVal[i].IntVal OP Src2.AggregateVal[i].IntVal;
+
+ // Additional macros to execute binary operations udiv/sdiv/urem/srem since
+ // they have different notation.
+#define INTEGER_VECTOR_FUNCTION(OP) \
+ for (unsigned i = 0; i < R.AggregateVal.size(); ++i) \
+ R.AggregateVal[i].IntVal = \
+ Src1.AggregateVal[i].IntVal.OP(Src2.AggregateVal[i].IntVal);
+
+ // Macros to execute binary operation 'OP' over floating point type TY
+ // (float or double) vectors
+#define FLOAT_VECTOR_FUNCTION(OP, TY) \
+ for (unsigned i = 0; i < R.AggregateVal.size(); ++i) \
+ R.AggregateVal[i].TY = \
+ Src1.AggregateVal[i].TY OP Src2.AggregateVal[i].TY;
+
+ // Macros to choose appropriate TY: float or double and run operation
+ // execution
+#define FLOAT_VECTOR_OP(OP) { \
+ if (dyn_cast<VectorType>(Ty)->getElementType()->isFloatTy()) \
+ FLOAT_VECTOR_FUNCTION(OP, FloatVal) \
+ else { \
+ if (dyn_cast<VectorType>(Ty)->getElementType()->isDoubleTy()) \
+ FLOAT_VECTOR_FUNCTION(OP, DoubleVal) \
+ else { \
+ dbgs() << "Unhandled type for OP instruction: " << *Ty << "\n"; \
+ llvm_unreachable(0); \
+ } \
+ } \
}
-static void StoreValueToMemory(GenericValue Val, GenericValue *Ptr,
- const Type *Ty) {
- if (TD.isLittleEndian()) {
- switch (Ty->getPrimitiveID()) {
- case Type::BoolTyID:
- case Type::UByteTyID:
- case Type::SByteTyID: Ptr->Untyped[0] = Val.UByteVal; break;
- case Type::UShortTyID:
- case Type::ShortTyID: Ptr->Untyped[0] = Val.UShortVal & 255;
- Ptr->Untyped[1] = (Val.UShortVal >> 8) & 255;
- break;
- case Type::FloatTyID:
- case Type::UIntTyID:
- case Type::IntTyID: Ptr->Untyped[0] = Val.UIntVal & 255;
- Ptr->Untyped[1] = (Val.UIntVal >> 8) & 255;
- Ptr->Untyped[2] = (Val.UIntVal >> 16) & 255;
- Ptr->Untyped[3] = (Val.UIntVal >> 24) & 255;
- break;
- case Type::DoubleTyID:
- case Type::ULongTyID:
- case Type::LongTyID:
- case Type::PointerTyID: Ptr->Untyped[0] = Val.ULongVal & 255;
- Ptr->Untyped[1] = (Val.ULongVal >> 8) & 255;
- Ptr->Untyped[2] = (Val.ULongVal >> 16) & 255;
- Ptr->Untyped[3] = (Val.ULongVal >> 24) & 255;
- Ptr->Untyped[4] = (Val.ULongVal >> 32) & 255;
- Ptr->Untyped[5] = (Val.ULongVal >> 40) & 255;
- Ptr->Untyped[6] = (Val.ULongVal >> 48) & 255;
- Ptr->Untyped[7] = (Val.ULongVal >> 56) & 255;
- break;
+ switch(I.getOpcode()){
default:
- cout << "Cannot load value of type " << Ty << "!\n";
+ dbgs() << "Don't know how to handle this binary operator!\n-->" << I;
+ llvm_unreachable(nullptr);
+ break;
+ case Instruction::Add: INTEGER_VECTOR_OPERATION(+) break;
+ case Instruction::Sub: INTEGER_VECTOR_OPERATION(-) break;
+ case Instruction::Mul: INTEGER_VECTOR_OPERATION(*) break;
+ case Instruction::UDiv: INTEGER_VECTOR_FUNCTION(udiv) break;
+ case Instruction::SDiv: INTEGER_VECTOR_FUNCTION(sdiv) break;
+ case Instruction::URem: INTEGER_VECTOR_FUNCTION(urem) break;
+ case Instruction::SRem: INTEGER_VECTOR_FUNCTION(srem) break;
+ case Instruction::And: INTEGER_VECTOR_OPERATION(&) break;
+ case Instruction::Or: INTEGER_VECTOR_OPERATION(|) break;
+ case Instruction::Xor: INTEGER_VECTOR_OPERATION(^) break;
+ case Instruction::FAdd: FLOAT_VECTOR_OP(+) break;
+ case Instruction::FSub: FLOAT_VECTOR_OP(-) break;
+ case Instruction::FMul: FLOAT_VECTOR_OP(*) break;
+ case Instruction::FDiv: FLOAT_VECTOR_OP(/) break;
+ case Instruction::FRem:
+ if (dyn_cast<VectorType>(Ty)->getElementType()->isFloatTy())
+ for (unsigned i = 0; i < R.AggregateVal.size(); ++i)
+ R.AggregateVal[i].FloatVal =
+ fmod(Src1.AggregateVal[i].FloatVal, Src2.AggregateVal[i].FloatVal);
+ else {
+ if (dyn_cast<VectorType>(Ty)->getElementType()->isDoubleTy())
+ for (unsigned i = 0; i < R.AggregateVal.size(); ++i)
+ R.AggregateVal[i].DoubleVal =
+ fmod(Src1.AggregateVal[i].DoubleVal, Src2.AggregateVal[i].DoubleVal);
+ else {
+ dbgs() << "Unhandled type for Rem instruction: " << *Ty << "\n";
+ llvm_unreachable(nullptr);
+ }
+ }
+ break;
}
} else {
- switch (Ty->getPrimitiveID()) {
- case Type::BoolTyID:
- case Type::UByteTyID:
- case Type::SByteTyID: Ptr->Untyped[0] = Val.UByteVal; break;
- case Type::UShortTyID:
- case Type::ShortTyID: Ptr->Untyped[1] = Val.UShortVal & 255;
- Ptr->Untyped[0] = (Val.UShortVal >> 8) & 255;
- break;
- case Type::FloatTyID:
- case Type::UIntTyID:
- case Type::IntTyID: Ptr->Untyped[3] = Val.UIntVal & 255;
- Ptr->Untyped[2] = (Val.UIntVal >> 8) & 255;
- Ptr->Untyped[1] = (Val.UIntVal >> 16) & 255;
- Ptr->Untyped[0] = (Val.UIntVal >> 24) & 255;
- break;
- case Type::DoubleTyID:
- case Type::ULongTyID:
- case Type::LongTyID:
- case Type::PointerTyID: Ptr->Untyped[7] = Val.ULongVal & 255;
- Ptr->Untyped[6] = (Val.ULongVal >> 8) & 255;
- Ptr->Untyped[5] = (Val.ULongVal >> 16) & 255;
- Ptr->Untyped[4] = (Val.ULongVal >> 24) & 255;
- Ptr->Untyped[3] = (Val.ULongVal >> 32) & 255;
- Ptr->Untyped[2] = (Val.ULongVal >> 40) & 255;
- Ptr->Untyped[1] = (Val.ULongVal >> 48) & 255;
- Ptr->Untyped[0] = (Val.ULongVal >> 56) & 255;
- break;
+ switch (I.getOpcode()) {
default:
- cout << "Cannot load value of type " << Ty << "!\n";
+ dbgs() << "Don't know how to handle this binary operator!\n-->" << I;
+ llvm_unreachable(nullptr);
+ 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;
+ case Instruction::SRem: R.IntVal = Src1.IntVal.srem(Src2.IntVal); break;
+ case Instruction::And: R.IntVal = Src1.IntVal & Src2.IntVal; break;
+ case Instruction::Or: R.IntVal = Src1.IntVal | Src2.IntVal; break;
+ case Instruction::Xor: R.IntVal = Src1.IntVal ^ Src2.IntVal; break;
}
}
+ SetValue(&I, R, SF);
}
-static void executeStoreInst(StoreInst &I, ExecutionContext &SF) {
- GenericValue Val = getOperandValue(I.getOperand(0), SF);
- GenericValue SRC = getOperandValue(I.getPointerOperand(), SF);
- StoreValueToMemory(Val, (GenericValue *)SRC.PointerVal, I.getType());
+static GenericValue executeSelectInst(GenericValue Src1, GenericValue Src2,
+ GenericValue Src3, const Type *Ty) {
+ GenericValue Dest;
+ if(Ty->isVectorTy()) {
+ assert(Src1.AggregateVal.size() == Src2.AggregateVal.size());
+ assert(Src2.AggregateVal.size() == Src3.AggregateVal.size());
+ Dest.AggregateVal.resize( Src1.AggregateVal.size() );
+ for (size_t i = 0; i < Src1.AggregateVal.size(); ++i)
+ Dest.AggregateVal[i] = (Src1.AggregateVal[i].IntVal == 0) ?
+ Src3.AggregateVal[i] : Src2.AggregateVal[i];
+ } else {
+ Dest = (Src1.IntVal == 0) ? Src3 : Src2;
+ }
+ return Dest;
}
+void Interpreter::visitSelectInst(SelectInst &I) {
+ ExecutionContext &SF = ECStack.back();
+ const Type * Ty = I.getOperand(0)->getType();
+ GenericValue Src1 = getOperandValue(I.getOperand(0), SF);
+ GenericValue Src2 = getOperandValue(I.getOperand(1), SF);
+ GenericValue Src3 = getOperandValue(I.getOperand(2), SF);
+ GenericValue R = executeSelectInst(Src1, Src2, Src3, Ty);
+ SetValue(&I, R, SF);
+}
//===----------------------------------------------------------------------===//
-// Miscellaneous Instruction Implementations
+// Terminator Instruction Implementations
//===----------------------------------------------------------------------===//
-void Interpreter::executeCallInst(CallInst &I, ExecutionContext &SF) {
- ECStack.back().Caller = &I;
- vector<GenericValue> ArgVals;
- ArgVals.reserve(I.getNumOperands()-1);
- for (unsigned i = 1; i < I.getNumOperands(); ++i)
- ArgVals.push_back(getOperandValue(I.getOperand(i), SF));
+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());
+}
- // To handle indirect calls, we must get the pointer value from the argument
- // and treat it as a function pointer.
- GenericValue SRC = getOperandValue(I.getCalledValue(), SF);
-
- callMethod((Function*)SRC.PointerVal, ArgVals);
+/// Pop the last stack frame off of ECStack and then copy the result
+/// back into the result variable if we are not returning void. The
+/// result variable may be the ExitValue, or the Value of the calling
+/// CallInst if there was a previous stack frame. This method may
+/// invalidate any ECStack iterators you have. This method also takes
+/// care of switching to the normal destination BB, if we are returning
+/// from an invoke.
+///
+void Interpreter::popStackAndReturnValueToCaller(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->isVoidTy()) { // Nonvoid return type?
+ ExitValue = Result; // Capture the exit value of the program
+ } else {
+ 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()) {
+ // Save result...
+ if (!CallingSF.Caller.getType()->isVoidTy())
+ SetValue(I, Result, CallingSF);
+ if (InvokeInst *II = dyn_cast<InvokeInst> (I))
+ SwitchToNewBasicBlock (II->getNormalDest (), CallingSF);
+ CallingSF.Caller = CallSite(); // We returned from the call...
+ }
+ }
}
-static void executePHINode(PHINode &I, ExecutionContext &SF) {
- BasicBlock *PrevBB = SF.PrevBB;
- Value *IncomingValue = 0;
+void Interpreter::visitReturnInst(ReturnInst &I) {
+ ExecutionContext &SF = ECStack.back();
+ Type *RetTy = Type::getVoidTy(I.getContext());
+ GenericValue Result;
+
+ // Save away the return value... (if we are not 'ret void')
+ if (I.getNumOperands()) {
+ RetTy = I.getReturnValue()->getType();
+ Result = getOperandValue(I.getReturnValue(), SF);
+ }
+
+ popStackAndReturnValueToCaller(RetTy, Result);
+}
+
+void Interpreter::visitUnreachableInst(UnreachableInst &I) {
+ report_fatal_error("Program executed an 'unreachable' instruction!");
+}
+
+void Interpreter::visitBranchInst(BranchInst &I) {
+ ExecutionContext &SF = ECStack.back();
+ BasicBlock *Dest;
+
+ Dest = I.getSuccessor(0); // Uncond branches have a fixed dest...
+ if (!I.isUnconditional()) {
+ Value *Cond = I.getCondition();
+ if (getOperandValue(Cond, SF).IntVal == 0) // If false cond...
+ Dest = I.getSuccessor(1);
+ }
+ SwitchToNewBasicBlock(Dest, SF);
+}
- // Search for the value corresponding to this previous bb...
- for (unsigned i = I.getNumIncomingValues(); i > 0;) {
- if (I.getIncomingBlock(--i) == PrevBB) {
- IncomingValue = I.getIncomingValue(i);
+void Interpreter::visitSwitchInst(SwitchInst &I) {
+ ExecutionContext &SF = ECStack.back();
+ Value* Cond = I.getCondition();
+ Type *ElTy = Cond->getType();
+ GenericValue CondVal = getOperandValue(Cond, SF);
+
+ // Check to see if any of the cases match...
+ BasicBlock *Dest = nullptr;
+ for (SwitchInst::CaseIt i = I.case_begin(), e = I.case_end(); i != e; ++i) {
+ GenericValue CaseVal = getOperandValue(i.getCaseValue(), SF);
+ if (executeICMP_EQ(CondVal, CaseVal, ElTy).IntVal != 0) {
+ Dest = cast<BasicBlock>(i.getCaseSuccessor());
break;
}
}
- assert(IncomingValue && "No PHI node predecessor for current PrevBB!");
+ if (!Dest) Dest = I.getDefaultDest(); // No cases matched: use default
+ 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.
+//
+// This method does this because all of the PHI nodes must be executed
+// atomically, reading their inputs before any of the results are updated. Not
+// doing this can cause problems if the PHI nodes depend on other PHI nodes for
+// their inputs. If the input PHI node is updated before it is read, incorrect
+// results can happen. Thus we use a two phase approach.
+//
+void Interpreter::SwitchToNewBasicBlock(BasicBlock *Dest, ExecutionContext &SF){
+ BasicBlock *PrevBB = SF.CurBB; // Remember where we came from...
+ SF.CurBB = Dest; // Update CurBB to branch destination
+ SF.CurInst = SF.CurBB->begin(); // Update new instruction ptr...
+
+ if (!isa<PHINode>(SF.CurInst)) return; // Nothing fancy to do
+
+ // Loop over all of the PHI nodes in the current block, reading their inputs.
+ std::vector<GenericValue> ResultValues;
+
+ for (; PHINode *PN = dyn_cast<PHINode>(SF.CurInst); ++SF.CurInst) {
+ // Search for the value corresponding to this previous bb...
+ int i = PN->getBasicBlockIndex(PrevBB);
+ assert(i != -1 && "PHINode doesn't contain entry for predecessor??");
+ Value *IncomingValue = PN->getIncomingValue(i);
+
+ // Save the incoming value for this PHI node...
+ ResultValues.push_back(getOperandValue(IncomingValue, SF));
+ }
+
+ // Now loop over all of the PHI nodes setting their values...
+ SF.CurInst = SF.CurBB->begin();
+ for (unsigned i = 0; isa<PHINode>(SF.CurInst); ++SF.CurInst, ++i) {
+ PHINode *PN = cast<PHINode>(SF.CurInst);
+ SetValue(PN, ResultValues[i], SF);
+ }
+}
+
+//===----------------------------------------------------------------------===//
+// Memory Instruction Implementations
+//===----------------------------------------------------------------------===//
+
+void Interpreter::visitAllocaInst(AllocaInst &I) {
+ ExecutionContext &SF = ECStack.back();
+
+ Type *Ty = I.getType()->getElementType(); // Type to be allocated
+
+ // Get the number of elements being allocated by the array...
+ unsigned NumElements =
+ getOperandValue(I.getOperand(0), SF).IntVal.getZExtValue();
+
+ unsigned TypeSize = (size_t)TD.getTypeAllocSize(Ty);
+
+ // 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);
+
+ DEBUG(dbgs() << "Allocated Type: " << *Ty << " (" << TypeSize << " bytes) x "
+ << NumElements << " (Total: " << MemToAlloc << ") at "
+ << uintptr_t(Memory) << '\n');
+
+ GenericValue Result = PTOGV(Memory);
+ assert(Result.PointerVal && "Null pointer returned by malloc!");
+ SetValue(&I, Result, SF);
+
+ if (I.getOpcode() == Instruction::Alloca)
+ ECStack.back().Allocas.add(Memory);
+}
+
+// getElementOffset - The workhorse for getelementptr.
+//
+GenericValue Interpreter::executeGEPOperation(Value *Ptr, gep_type_iterator I,
+ gep_type_iterator E,
+ ExecutionContext &SF) {
+ assert(Ptr->getType()->isPointerTy() &&
+ "Cannot getElementOffset of a nonpointer type!");
+
+ uint64_t Total = 0;
+
+ for (; I != E; ++I) {
+ if (StructType *STy = dyn_cast<StructType>(*I)) {
+ const StructLayout *SLO = TD.getStructLayout(STy);
+
+ const ConstantInt *CPU = cast<ConstantInt>(I.getOperand());
+ unsigned Index = unsigned(CPU->getZExtValue());
+
+ Total += SLO->getElementOffset(Index);
+ } else {
+ SequentialType *ST = cast<SequentialType>(*I);
+ // Get the index number for the array... which must be long type...
+ GenericValue IdxGV = getOperandValue(I.getOperand(), SF);
+
+ int64_t Idx;
+ unsigned BitWidth =
+ cast<IntegerType>(I.getOperand()->getType())->getBitWidth();
+ if (BitWidth == 32)
+ Idx = (int64_t)(int32_t)IdxGV.IntVal.getZExtValue();
+ else {
+ assert(BitWidth == 64 && "Invalid index type for getelementptr");
+ Idx = (int64_t)IdxGV.IntVal.getZExtValue();
+ }
+ Total += TD.getTypeAllocSize(ST->getElementType())*Idx;
+ }
+ }
- // Found the value, set as the result...
- SetValue(&I, getOperandValue(IncomingValue, SF), SF);
+ GenericValue Result;
+ Result.PointerVal = ((char*)getOperandValue(Ptr, SF).PointerVal) + Total;
+ DEBUG(dbgs() << "GEP Index " << Total << " bytes.\n");
+ return Result;
}
-#define IMPLEMENT_SHIFT(OP, TY) \
- case Type::TY##TyID: Dest.TY##Val = Src1.TY##Val OP Src2.UByteVal; break
+void Interpreter::visitGetElementPtrInst(GetElementPtrInst &I) {
+ ExecutionContext &SF = ECStack.back();
+ SetValue(&I, executeGEPOperation(I.getPointerOperand(),
+ gep_type_begin(I), gep_type_end(I), SF), SF);
+}
-static void executeShlInst(ShiftInst &I, ExecutionContext &SF) {
- const Type *Ty = I.getOperand(0)->getType();
+void Interpreter::visitLoadInst(LoadInst &I) {
+ ExecutionContext &SF = ECStack.back();
+ GenericValue SRC = getOperandValue(I.getPointerOperand(), SF);
+ GenericValue *Ptr = (GenericValue*)GVTOP(SRC);
+ GenericValue Result;
+ LoadValueFromMemory(Result, Ptr, I.getType());
+ SetValue(&I, Result, SF);
+ if (I.isVolatile() && PrintVolatile)
+ dbgs() << "Volatile load " << I;
+}
+
+void Interpreter::visitStoreInst(StoreInst &I) {
+ ExecutionContext &SF = ECStack.back();
+ GenericValue Val = getOperandValue(I.getOperand(0), SF);
+ GenericValue SRC = getOperandValue(I.getPointerOperand(), SF);
+ StoreValueToMemory(Val, (GenericValue *)GVTOP(SRC),
+ I.getOperand(0)->getType());
+ if (I.isVolatile() && PrintVolatile)
+ dbgs() << "Volatile store: " << I;
+}
+
+//===----------------------------------------------------------------------===//
+// Miscellaneous Instruction Implementations
+//===----------------------------------------------------------------------===//
+
+void Interpreter::visitCallSite(CallSite CS) {
+ ExecutionContext &SF = ECStack.back();
+
+ // Check to see if this is an intrinsic function call...
+ Function *F = CS.getCalledFunction();
+ if (F && F->isDeclaration())
+ switch (F->getIntrinsicID()) {
+ case Intrinsic::not_intrinsic:
+ break;
+ case Intrinsic::vastart: { // va_start
+ GenericValue ArgIndex;
+ ArgIndex.UIntPairVal.first = ECStack.size() - 1;
+ ArgIndex.UIntPairVal.second = 0;
+ SetValue(CS.getInstruction(), ArgIndex, SF);
+ return;
+ }
+ case Intrinsic::vaend: // va_end is a noop for the interpreter
+ return;
+ case Intrinsic::vacopy: // va_copy: dest = src
+ SetValue(CS.getInstruction(), getOperandValue(*CS.arg_begin(), SF), SF);
+ return;
+ default:
+ // If it is an unknown intrinsic function, use the intrinsic lowering
+ // class to transform it into hopefully tasty LLVM code.
+ //
+ BasicBlock::iterator me(CS.getInstruction());
+ BasicBlock *Parent = CS.getInstruction()->getParent();
+ bool atBegin(Parent->begin() == me);
+ if (!atBegin)
+ --me;
+ IL->LowerIntrinsicCall(cast<CallInst>(CS.getInstruction()));
+
+ // Restore the CurInst pointer to the first instruction newly inserted, if
+ // any.
+ if (atBegin) {
+ SF.CurInst = Parent->begin();
+ } else {
+ SF.CurInst = me;
+ ++SF.CurInst;
+ }
+ return;
+ }
+
+
+ SF.Caller = CS;
+ std::vector<GenericValue> 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, ++pNum) {
+ Value *V = *i;
+ ArgVals.push_back(getOperandValue(V, SF));
+ }
+
+ // To handle indirect calls, we must get the pointer value from the argument
+ // and treat it as a function pointer.
+ GenericValue SRC = getOperandValue(SF.Caller.getCalledValue(), SF);
+ callFunction((Function*)GVTOP(SRC), ArgVals);
+}
+
+// auxiliary function for shift operations
+static unsigned getShiftAmount(uint64_t orgShiftAmount,
+ llvm::APInt valueToShift) {
+ unsigned valueWidth = valueToShift.getBitWidth();
+ if (orgShiftAmount < (uint64_t)valueWidth)
+ return orgShiftAmount;
+ // according to the llvm documentation, if orgShiftAmount > valueWidth,
+ // the result is undfeined. but we do shift by this rule:
+ return (NextPowerOf2(valueWidth-1) - 1) & orgShiftAmount;
+}
+
+
+void Interpreter::visitShl(BinaryOperator &I) {
+ ExecutionContext &SF = ECStack.back();
GenericValue Src1 = getOperandValue(I.getOperand(0), SF);
GenericValue Src2 = getOperandValue(I.getOperand(1), SF);
GenericValue Dest;
-
- switch (Ty->getPrimitiveID()) {
- IMPLEMENT_SHIFT(<<, UByte);
- IMPLEMENT_SHIFT(<<, SByte);
- IMPLEMENT_SHIFT(<<, UShort);
- IMPLEMENT_SHIFT(<<, Short);
- IMPLEMENT_SHIFT(<<, UInt);
- IMPLEMENT_SHIFT(<<, Int);
- IMPLEMENT_SHIFT(<<, ULong);
- IMPLEMENT_SHIFT(<<, Long);
- IMPLEMENT_SHIFT(<<, Pointer);
- default:
- cout << "Unhandled type for Shl instruction: " << Ty << "\n";
+ const Type *Ty = I.getType();
+
+ if (Ty->isVectorTy()) {
+ uint32_t src1Size = uint32_t(Src1.AggregateVal.size());
+ assert(src1Size == Src2.AggregateVal.size());
+ for (unsigned i = 0; i < src1Size; i++) {
+ GenericValue Result;
+ uint64_t shiftAmount = Src2.AggregateVal[i].IntVal.getZExtValue();
+ llvm::APInt valueToShift = Src1.AggregateVal[i].IntVal;
+ Result.IntVal = valueToShift.shl(getShiftAmount(shiftAmount, valueToShift));
+ Dest.AggregateVal.push_back(Result);
+ }
+ } else {
+ // scalar
+ uint64_t shiftAmount = Src2.IntVal.getZExtValue();
+ llvm::APInt valueToShift = Src1.IntVal;
+ Dest.IntVal = valueToShift.shl(getShiftAmount(shiftAmount, valueToShift));
}
+
SetValue(&I, Dest, SF);
}
-static void executeShrInst(ShiftInst &I, ExecutionContext &SF) {
- const Type *Ty = I.getOperand(0)->getType();
+void Interpreter::visitLShr(BinaryOperator &I) {
+ ExecutionContext &SF = ECStack.back();
GenericValue Src1 = getOperandValue(I.getOperand(0), SF);
GenericValue Src2 = getOperandValue(I.getOperand(1), SF);
GenericValue Dest;
+ const Type *Ty = I.getType();
+
+ if (Ty->isVectorTy()) {
+ uint32_t src1Size = uint32_t(Src1.AggregateVal.size());
+ assert(src1Size == Src2.AggregateVal.size());
+ for (unsigned i = 0; i < src1Size; i++) {
+ GenericValue Result;
+ uint64_t shiftAmount = Src2.AggregateVal[i].IntVal.getZExtValue();
+ llvm::APInt valueToShift = Src1.AggregateVal[i].IntVal;
+ Result.IntVal = valueToShift.lshr(getShiftAmount(shiftAmount, valueToShift));
+ Dest.AggregateVal.push_back(Result);
+ }
+ } else {
+ // scalar
+ uint64_t shiftAmount = Src2.IntVal.getZExtValue();
+ llvm::APInt valueToShift = Src1.IntVal;
+ Dest.IntVal = valueToShift.lshr(getShiftAmount(shiftAmount, valueToShift));
+ }
- switch (Ty->getPrimitiveID()) {
- IMPLEMENT_SHIFT(>>, UByte);
- IMPLEMENT_SHIFT(>>, SByte);
- IMPLEMENT_SHIFT(>>, UShort);
- IMPLEMENT_SHIFT(>>, Short);
- IMPLEMENT_SHIFT(>>, UInt);
- IMPLEMENT_SHIFT(>>, Int);
- IMPLEMENT_SHIFT(>>, ULong);
- IMPLEMENT_SHIFT(>>, Long);
- IMPLEMENT_SHIFT(>>, Pointer);
- default:
- cout << "Unhandled type for Shr instruction: " << Ty << "\n";
+ SetValue(&I, Dest, SF);
+}
+
+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;
+ const Type *Ty = I.getType();
+
+ if (Ty->isVectorTy()) {
+ size_t src1Size = Src1.AggregateVal.size();
+ assert(src1Size == Src2.AggregateVal.size());
+ for (unsigned i = 0; i < src1Size; i++) {
+ GenericValue Result;
+ uint64_t shiftAmount = Src2.AggregateVal[i].IntVal.getZExtValue();
+ llvm::APInt valueToShift = Src1.AggregateVal[i].IntVal;
+ Result.IntVal = valueToShift.ashr(getShiftAmount(shiftAmount, valueToShift));
+ Dest.AggregateVal.push_back(Result);
+ }
+ } else {
+ // scalar
+ uint64_t shiftAmount = Src2.IntVal.getZExtValue();
+ llvm::APInt valueToShift = Src1.IntVal;
+ Dest.IntVal = valueToShift.ashr(getShiftAmount(shiftAmount, valueToShift));
}
+
SetValue(&I, Dest, SF);
}
-#define IMPLEMENT_CAST(DTY, DCTY, STY) \
- case Type::STY##TyID: Dest.DTY##Val = DCTY Src.STY##Val; break;
-
-#define IMPLEMENT_CAST_CASE_START(DESTTY, DESTCTY) \
- case Type::DESTTY##TyID: \
- switch (SrcTy->getPrimitiveID()) { \
- IMPLEMENT_CAST(DESTTY, DESTCTY, Bool); \
- IMPLEMENT_CAST(DESTTY, DESTCTY, UByte); \
- IMPLEMENT_CAST(DESTTY, DESTCTY, SByte); \
- IMPLEMENT_CAST(DESTTY, DESTCTY, UShort); \
- IMPLEMENT_CAST(DESTTY, DESTCTY, Short); \
- IMPLEMENT_CAST(DESTTY, DESTCTY, UInt); \
- IMPLEMENT_CAST(DESTTY, DESTCTY, Int); \
- IMPLEMENT_CAST(DESTTY, DESTCTY, ULong); \
- IMPLEMENT_CAST(DESTTY, DESTCTY, Long); \
- IMPLEMENT_CAST(DESTTY, DESTCTY, Pointer);
-
-#define IMPLEMENT_CAST_CASE_FP_IMP(DESTTY, DESTCTY) \
- IMPLEMENT_CAST(DESTTY, DESTCTY, Float); \
- IMPLEMENT_CAST(DESTTY, DESTCTY, Double)
-
-#define IMPLEMENT_CAST_CASE_END() \
- default: cout << "Unhandled cast: " << SrcTy << " to " << Ty << "\n"; \
- break; \
- } \
- break
-
-#define IMPLEMENT_CAST_CASE(DESTTY, DESTCTY) \
- IMPLEMENT_CAST_CASE_START(DESTTY, DESTCTY); \
- IMPLEMENT_CAST_CASE_FP_IMP(DESTTY, DESTCTY); \
- IMPLEMENT_CAST_CASE_END()
-
-static GenericValue executeCastOperation(Value *SrcVal, const Type *Ty,
- ExecutionContext &SF) {
- const Type *SrcTy = SrcVal->getType();
+GenericValue Interpreter::executeTruncInst(Value *SrcVal, Type *DstTy,
+ ExecutionContext &SF) {
GenericValue Dest, Src = getOperandValue(SrcVal, SF);
+ Type *SrcTy = SrcVal->getType();
+ if (SrcTy->isVectorTy()) {
+ Type *DstVecTy = DstTy->getScalarType();
+ unsigned DBitWidth = cast<IntegerType>(DstVecTy)->getBitWidth();
+ unsigned NumElts = Src.AggregateVal.size();
+ // the sizes of src and dst vectors must be equal
+ Dest.AggregateVal.resize(NumElts);
+ for (unsigned i = 0; i < NumElts; i++)
+ Dest.AggregateVal[i].IntVal = Src.AggregateVal[i].IntVal.trunc(DBitWidth);
+ } else {
+ IntegerType *DITy = cast<IntegerType>(DstTy);
+ unsigned DBitWidth = DITy->getBitWidth();
+ Dest.IntVal = Src.IntVal.trunc(DBitWidth);
+ }
+ return Dest;
+}
- switch (Ty->getPrimitiveID()) {
- IMPLEMENT_CAST_CASE(UByte , (unsigned char));
- IMPLEMENT_CAST_CASE(SByte , ( signed char));
- IMPLEMENT_CAST_CASE(UShort , (unsigned short));
- IMPLEMENT_CAST_CASE(Short , ( signed short));
- IMPLEMENT_CAST_CASE(UInt , (unsigned int ));
- IMPLEMENT_CAST_CASE(Int , ( signed int ));
- IMPLEMENT_CAST_CASE(ULong , (uint64_t));
- IMPLEMENT_CAST_CASE(Long , ( int64_t));
- IMPLEMENT_CAST_CASE(Pointer, (PointerTy)(uint32_t));
- IMPLEMENT_CAST_CASE(Float , (float));
- IMPLEMENT_CAST_CASE(Double , (double));
- default:
- cout << "Unhandled dest type for cast instruction: " << Ty << "\n";
+GenericValue Interpreter::executeSExtInst(Value *SrcVal, Type *DstTy,
+ ExecutionContext &SF) {
+ const Type *SrcTy = SrcVal->getType();
+ GenericValue Dest, Src = getOperandValue(SrcVal, SF);
+ if (SrcTy->isVectorTy()) {
+ const Type *DstVecTy = DstTy->getScalarType();
+ unsigned DBitWidth = cast<IntegerType>(DstVecTy)->getBitWidth();
+ unsigned size = Src.AggregateVal.size();
+ // the sizes of src and dst vectors must be equal.
+ Dest.AggregateVal.resize(size);
+ for (unsigned i = 0; i < size; i++)
+ Dest.AggregateVal[i].IntVal = Src.AggregateVal[i].IntVal.sext(DBitWidth);
+ } else {
+ const IntegerType *DITy = cast<IntegerType>(DstTy);
+ unsigned DBitWidth = DITy->getBitWidth();
+ Dest.IntVal = Src.IntVal.sext(DBitWidth);
}
+ return Dest;
+}
+GenericValue Interpreter::executeZExtInst(Value *SrcVal, Type *DstTy,
+ ExecutionContext &SF) {
+ const Type *SrcTy = SrcVal->getType();
+ GenericValue Dest, Src = getOperandValue(SrcVal, SF);
+ if (SrcTy->isVectorTy()) {
+ const Type *DstVecTy = DstTy->getScalarType();
+ unsigned DBitWidth = cast<IntegerType>(DstVecTy)->getBitWidth();
+
+ unsigned size = Src.AggregateVal.size();
+ // the sizes of src and dst vectors must be equal.
+ Dest.AggregateVal.resize(size);
+ for (unsigned i = 0; i < size; i++)
+ Dest.AggregateVal[i].IntVal = Src.AggregateVal[i].IntVal.zext(DBitWidth);
+ } else {
+ const IntegerType *DITy = cast<IntegerType>(DstTy);
+ unsigned DBitWidth = DITy->getBitWidth();
+ Dest.IntVal = Src.IntVal.zext(DBitWidth);
+ }
return Dest;
}
+GenericValue Interpreter::executeFPTruncInst(Value *SrcVal, Type *DstTy,
+ ExecutionContext &SF) {
+ GenericValue Dest, Src = getOperandValue(SrcVal, SF);
-static void executeCastInst(CastInst &I, ExecutionContext &SF) {
- SetValue(&I, executeCastOperation(I.getOperand(0), I.getType(), SF), SF);
+ if (SrcVal->getType()->getTypeID() == Type::VectorTyID) {
+ assert(SrcVal->getType()->getScalarType()->isDoubleTy() &&
+ DstTy->getScalarType()->isFloatTy() &&
+ "Invalid FPTrunc instruction");
+
+ unsigned size = Src.AggregateVal.size();
+ // the sizes of src and dst vectors must be equal.
+ Dest.AggregateVal.resize(size);
+ for (unsigned i = 0; i < size; i++)
+ Dest.AggregateVal[i].FloatVal = (float)Src.AggregateVal[i].DoubleVal;
+ } else {
+ assert(SrcVal->getType()->isDoubleTy() && DstTy->isFloatTy() &&
+ "Invalid FPTrunc instruction");
+ Dest.FloatVal = (float)Src.DoubleVal;
+ }
+
+ return Dest;
}
+GenericValue Interpreter::executeFPExtInst(Value *SrcVal, Type *DstTy,
+ ExecutionContext &SF) {
+ GenericValue Dest, Src = getOperandValue(SrcVal, SF);
-//===----------------------------------------------------------------------===//
-// Dispatch and Execution Code
-//===----------------------------------------------------------------------===//
+ if (SrcVal->getType()->getTypeID() == Type::VectorTyID) {
+ assert(SrcVal->getType()->getScalarType()->isFloatTy() &&
+ DstTy->getScalarType()->isDoubleTy() && "Invalid FPExt instruction");
-MethodInfo::MethodInfo(Function *F) : Annotation(MethodInfoAID) {
- // Assign slot numbers to the function arguments...
- for (Function::const_aiterator AI = F->abegin(), E = F->aend(); AI != E; ++AI)
- AI->addAnnotation(new SlotNumber(getValueSlot(AI)));
+ unsigned size = Src.AggregateVal.size();
+ // the sizes of src and dst vectors must be equal.
+ Dest.AggregateVal.resize(size);
+ for (unsigned i = 0; i < size; i++)
+ Dest.AggregateVal[i].DoubleVal = (double)Src.AggregateVal[i].FloatVal;
+ } else {
+ assert(SrcVal->getType()->isFloatTy() && DstTy->isDoubleTy() &&
+ "Invalid FPExt instruction");
+ Dest.DoubleVal = (double)Src.FloatVal;
+ }
- // Iterate over all of the instructions...
- unsigned InstNum = 0;
- for (Function::iterator BB = F->begin(), BBE = F->end(); BB != BBE; ++BB)
- for (BasicBlock::iterator II = BB->begin(), IE = BB->end(); II != IE; ++II)
- // For each instruction... Add Annote
- II->addAnnotation(new InstNumber(++InstNum, getValueSlot(II)));
+ return Dest;
}
-unsigned MethodInfo::getValueSlot(const Value *V) {
- unsigned Plane = V->getType()->getUniqueID();
- if (Plane >= NumPlaneElements.size())
- NumPlaneElements.resize(Plane+1, 0);
- return NumPlaneElements[Plane]++;
+GenericValue Interpreter::executeFPToUIInst(Value *SrcVal, Type *DstTy,
+ ExecutionContext &SF) {
+ Type *SrcTy = SrcVal->getType();
+ GenericValue Dest, Src = getOperandValue(SrcVal, SF);
+
+ if (SrcTy->getTypeID() == Type::VectorTyID) {
+ const Type *DstVecTy = DstTy->getScalarType();
+ const Type *SrcVecTy = SrcTy->getScalarType();
+ uint32_t DBitWidth = cast<IntegerType>(DstVecTy)->getBitWidth();
+ unsigned size = Src.AggregateVal.size();
+ // the sizes of src and dst vectors must be equal.
+ Dest.AggregateVal.resize(size);
+
+ if (SrcVecTy->getTypeID() == Type::FloatTyID) {
+ assert(SrcVecTy->isFloatingPointTy() && "Invalid FPToUI instruction");
+ for (unsigned i = 0; i < size; i++)
+ Dest.AggregateVal[i].IntVal = APIntOps::RoundFloatToAPInt(
+ Src.AggregateVal[i].FloatVal, DBitWidth);
+ } else {
+ for (unsigned i = 0; i < size; i++)
+ Dest.AggregateVal[i].IntVal = APIntOps::RoundDoubleToAPInt(
+ Src.AggregateVal[i].DoubleVal, DBitWidth);
+ }
+ } else {
+ // scalar
+ uint32_t DBitWidth = cast<IntegerType>(DstTy)->getBitWidth();
+ assert(SrcTy->isFloatingPointTy() && "Invalid FPToUI instruction");
+
+ if (SrcTy->getTypeID() == Type::FloatTyID)
+ Dest.IntVal = APIntOps::RoundFloatToAPInt(Src.FloatVal, DBitWidth);
+ else {
+ Dest.IntVal = APIntOps::RoundDoubleToAPInt(Src.DoubleVal, DBitWidth);
+ }
+ }
+
+ return Dest;
}
+GenericValue Interpreter::executeFPToSIInst(Value *SrcVal, Type *DstTy,
+ ExecutionContext &SF) {
+ Type *SrcTy = SrcVal->getType();
+ GenericValue Dest, Src = getOperandValue(SrcVal, SF);
-//===----------------------------------------------------------------------===//
-// callMethod - Execute the specified function...
-//
-void Interpreter::callMethod(Function *M, const vector<GenericValue> &ArgVals) {
- assert((ECStack.empty() || ECStack.back().Caller == 0 ||
- ECStack.back().Caller->getNumOperands()-1 == ArgVals.size()) &&
- "Incorrect number of arguments passed into function call!");
- if (M->isExternal()) {
- GenericValue Result = callExternalMethod(M, ArgVals);
- const Type *RetTy = M->getReturnType();
-
- // Copy the result back into the result variable if we are not returning
- // void.
- if (RetTy != Type::VoidTy) {
- if (!ECStack.empty() && ECStack.back().Caller) {
- ExecutionContext &SF = ECStack.back();
- SetValue(SF.Caller, Result, SF);
-
- SF.Caller = 0; // We returned from the call...
- } else if (!QuietMode) {
- // print it.
- CW << "Function " << M->getType() << " \"" << M->getName()
- << "\" returned ";
- print(RetTy, Result);
- cout << "\n";
-
- if (RetTy->isIntegral())
- ExitCode = Result.IntVal; // Capture the exit code of the program
- }
+ if (SrcTy->getTypeID() == Type::VectorTyID) {
+ const Type *DstVecTy = DstTy->getScalarType();
+ const Type *SrcVecTy = SrcTy->getScalarType();
+ uint32_t DBitWidth = cast<IntegerType>(DstVecTy)->getBitWidth();
+ unsigned size = Src.AggregateVal.size();
+ // the sizes of src and dst vectors must be equal
+ Dest.AggregateVal.resize(size);
+
+ if (SrcVecTy->getTypeID() == Type::FloatTyID) {
+ assert(SrcVecTy->isFloatingPointTy() && "Invalid FPToSI instruction");
+ for (unsigned i = 0; i < size; i++)
+ Dest.AggregateVal[i].IntVal = APIntOps::RoundFloatToAPInt(
+ Src.AggregateVal[i].FloatVal, DBitWidth);
+ } else {
+ for (unsigned i = 0; i < size; i++)
+ Dest.AggregateVal[i].IntVal = APIntOps::RoundDoubleToAPInt(
+ Src.AggregateVal[i].DoubleVal, DBitWidth);
+ }
+ } else {
+ // scalar
+ unsigned DBitWidth = cast<IntegerType>(DstTy)->getBitWidth();
+ assert(SrcTy->isFloatingPointTy() && "Invalid FPToSI instruction");
+
+ if (SrcTy->getTypeID() == Type::FloatTyID)
+ Dest.IntVal = APIntOps::RoundFloatToAPInt(Src.FloatVal, DBitWidth);
+ else {
+ Dest.IntVal = APIntOps::RoundDoubleToAPInt(Src.DoubleVal, DBitWidth);
}
-
- return;
}
+ return Dest;
+}
- // Process the function, assigning instruction numbers to the instructions in
- // the function. Also calculate the number of values for each type slot
- // active.
- //
- MethodInfo *MethInfo = (MethodInfo*)M->getOrCreateAnnotation(MethodInfoAID);
- ECStack.push_back(ExecutionContext()); // Make a new stack frame...
+GenericValue Interpreter::executeUIToFPInst(Value *SrcVal, Type *DstTy,
+ ExecutionContext &SF) {
+ GenericValue Dest, Src = getOperandValue(SrcVal, SF);
- ExecutionContext &StackFrame = ECStack.back(); // Fill it in...
- StackFrame.CurMethod = M;
- StackFrame.CurBB = M->begin();
- StackFrame.CurInst = StackFrame.CurBB->begin();
- StackFrame.MethInfo = MethInfo;
+ if (SrcVal->getType()->getTypeID() == Type::VectorTyID) {
+ const Type *DstVecTy = DstTy->getScalarType();
+ unsigned size = Src.AggregateVal.size();
+ // the sizes of src and dst vectors must be equal
+ Dest.AggregateVal.resize(size);
+
+ if (DstVecTy->getTypeID() == Type::FloatTyID) {
+ assert(DstVecTy->isFloatingPointTy() && "Invalid UIToFP instruction");
+ for (unsigned i = 0; i < size; i++)
+ Dest.AggregateVal[i].FloatVal =
+ APIntOps::RoundAPIntToFloat(Src.AggregateVal[i].IntVal);
+ } else {
+ for (unsigned i = 0; i < size; i++)
+ Dest.AggregateVal[i].DoubleVal =
+ APIntOps::RoundAPIntToDouble(Src.AggregateVal[i].IntVal);
+ }
+ } else {
+ // scalar
+ assert(DstTy->isFloatingPointTy() && "Invalid UIToFP instruction");
+ if (DstTy->getTypeID() == Type::FloatTyID)
+ Dest.FloatVal = APIntOps::RoundAPIntToFloat(Src.IntVal);
+ else {
+ Dest.DoubleVal = APIntOps::RoundAPIntToDouble(Src.IntVal);
+ }
+ }
+ return Dest;
+}
+
+GenericValue Interpreter::executeSIToFPInst(Value *SrcVal, Type *DstTy,
+ ExecutionContext &SF) {
+ GenericValue Dest, Src = getOperandValue(SrcVal, SF);
- // Initialize the values to nothing...
- StackFrame.Values.resize(MethInfo->NumPlaneElements.size());
- for (unsigned i = 0; i < MethInfo->NumPlaneElements.size(); ++i) {
- StackFrame.Values[i].resize(MethInfo->NumPlaneElements[i]);
+ if (SrcVal->getType()->getTypeID() == Type::VectorTyID) {
+ const Type *DstVecTy = DstTy->getScalarType();
+ unsigned size = Src.AggregateVal.size();
+ // the sizes of src and dst vectors must be equal
+ Dest.AggregateVal.resize(size);
+
+ if (DstVecTy->getTypeID() == Type::FloatTyID) {
+ assert(DstVecTy->isFloatingPointTy() && "Invalid SIToFP instruction");
+ for (unsigned i = 0; i < size; i++)
+ Dest.AggregateVal[i].FloatVal =
+ APIntOps::RoundSignedAPIntToFloat(Src.AggregateVal[i].IntVal);
+ } else {
+ for (unsigned i = 0; i < size; i++)
+ Dest.AggregateVal[i].DoubleVal =
+ APIntOps::RoundSignedAPIntToDouble(Src.AggregateVal[i].IntVal);
+ }
+ } else {
+ // scalar
+ assert(DstTy->isFloatingPointTy() && "Invalid SIToFP instruction");
- // Taint the initial values of stuff
- memset(&StackFrame.Values[i][0], 42,
- MethInfo->NumPlaneElements[i]*sizeof(GenericValue));
+ if (DstTy->getTypeID() == Type::FloatTyID)
+ Dest.FloatVal = APIntOps::RoundSignedAPIntToFloat(Src.IntVal);
+ else {
+ Dest.DoubleVal = APIntOps::RoundSignedAPIntToDouble(Src.IntVal);
+ }
}
- StackFrame.PrevBB = 0; // No previous BB for PHI nodes...
+ return Dest;
+}
+GenericValue Interpreter::executePtrToIntInst(Value *SrcVal, Type *DstTy,
+ ExecutionContext &SF) {
+ uint32_t DBitWidth = cast<IntegerType>(DstTy)->getBitWidth();
+ GenericValue Dest, Src = getOperandValue(SrcVal, SF);
+ assert(SrcVal->getType()->isPointerTy() && "Invalid PtrToInt instruction");
- // Run through the function arguments and initialize their values...
- assert(ArgVals.size() == M->asize() &&
- "Invalid number of values passed to function invocation!");
- unsigned i = 0;
- for (Function::aiterator AI = M->abegin(), E = M->aend(); AI != E; ++AI, ++i)
- SetValue(AI, ArgVals[i], StackFrame);
+ Dest.IntVal = APInt(DBitWidth, (intptr_t) Src.PointerVal);
+ return Dest;
}
-// executeInstruction - Interpret a single instruction, increment the "PC", and
-// return true if the next instruction is a breakpoint...
-//
-bool Interpreter::executeInstruction() {
- assert(!ECStack.empty() && "No program running, cannot execute inst!");
-
- ExecutionContext &SF = ECStack.back(); // Current stack frame
- Instruction &I = *SF.CurInst++; // Increment before execute
-
- if (Trace)
- CW << "Run:" << I;
-
- // Set a sigsetjmp buffer so that we can recover if an error happens during
- // instruction execution...
- //
- if (int SigNo = sigsetjmp(SignalRecoverBuffer, 1)) {
- --SF.CurInst; // Back up to erroring instruction
- if (SigNo != SIGINT) {
- cout << "EXCEPTION OCCURRED [" << strsignal(SigNo) << "]:\n";
- printStackTrace();
- // If -abort-on-exception was specified, terminate LLI instead of trying
- // to debug it.
- //
- if (AbortOnExceptions) exit(1);
- } else if (SigNo == SIGINT) {
- cout << "CTRL-C Detected, execution halted.\n";
+GenericValue Interpreter::executeIntToPtrInst(Value *SrcVal, Type *DstTy,
+ ExecutionContext &SF) {
+ GenericValue Dest, Src = getOperandValue(SrcVal, SF);
+ assert(DstTy->isPointerTy() && "Invalid PtrToInt instruction");
+
+ uint32_t PtrSize = TD.getPointerSizeInBits();
+ if (PtrSize != Src.IntVal.getBitWidth())
+ Src.IntVal = Src.IntVal.zextOrTrunc(PtrSize);
+
+ Dest.PointerVal = PointerTy(intptr_t(Src.IntVal.getZExtValue()));
+ return Dest;
+}
+
+GenericValue Interpreter::executeBitCastInst(Value *SrcVal, Type *DstTy,
+ ExecutionContext &SF) {
+
+ // This instruction supports bitwise conversion of vectors to integers and
+ // to vectors of other types (as long as they have the same size)
+ Type *SrcTy = SrcVal->getType();
+ GenericValue Dest, Src = getOperandValue(SrcVal, SF);
+
+ if ((SrcTy->getTypeID() == Type::VectorTyID) ||
+ (DstTy->getTypeID() == Type::VectorTyID)) {
+ // vector src bitcast to vector dst or vector src bitcast to scalar dst or
+ // scalar src bitcast to vector dst
+ bool isLittleEndian = TD.isLittleEndian();
+ GenericValue TempDst, TempSrc, SrcVec;
+ const Type *SrcElemTy;
+ const Type *DstElemTy;
+ unsigned SrcBitSize;
+ unsigned DstBitSize;
+ unsigned SrcNum;
+ unsigned DstNum;
+
+ if (SrcTy->getTypeID() == Type::VectorTyID) {
+ SrcElemTy = SrcTy->getScalarType();
+ SrcBitSize = SrcTy->getScalarSizeInBits();
+ SrcNum = Src.AggregateVal.size();
+ SrcVec = Src;
+ } else {
+ // if src is scalar value, make it vector <1 x type>
+ SrcElemTy = SrcTy;
+ SrcBitSize = SrcTy->getPrimitiveSizeInBits();
+ SrcNum = 1;
+ SrcVec.AggregateVal.push_back(Src);
}
- InInstruction = false;
- return true;
- }
- InInstruction = true;
- if (I.isBinaryOp()) {
- executeBinaryInst(cast<BinaryOperator>(I), SF);
- } else {
- switch (I.getOpcode()) {
- // Terminators
- case Instruction::Ret: executeRetInst (cast<ReturnInst>(I), SF); break;
- case Instruction::Br: executeBrInst (cast<BranchInst>(I), SF); break;
- // Memory Instructions
- case Instruction::Alloca:
- case Instruction::Malloc: executeAllocInst((AllocationInst&)I, SF); break;
- case Instruction::Free: executeFreeInst (cast<FreeInst> (I), SF); break;
- case Instruction::Load: executeLoadInst (cast<LoadInst> (I), SF); break;
- case Instruction::Store: executeStoreInst(cast<StoreInst>(I), SF); break;
- case Instruction::GetElementPtr:
- executeGEPInst(cast<GetElementPtrInst>(I), SF); break;
-
- // Miscellaneous Instructions
- case Instruction::Call: executeCallInst (cast<CallInst> (I), SF); break;
- case Instruction::PHINode: executePHINode (cast<PHINode> (I), SF); break;
- case Instruction::Shl: executeShlInst (cast<ShiftInst>(I), SF); break;
- case Instruction::Shr: executeShrInst (cast<ShiftInst>(I), SF); break;
- case Instruction::Cast: executeCastInst (cast<CastInst> (I), SF); break;
- default:
- cout << "Don't know how to execute this instruction!\n-->" << I;
+ if (DstTy->getTypeID() == Type::VectorTyID) {
+ DstElemTy = DstTy->getScalarType();
+ DstBitSize = DstTy->getScalarSizeInBits();
+ DstNum = (SrcNum * SrcBitSize) / DstBitSize;
+ } else {
+ DstElemTy = DstTy;
+ DstBitSize = DstTy->getPrimitiveSizeInBits();
+ DstNum = 1;
+ }
+
+ if (SrcNum * SrcBitSize != DstNum * DstBitSize)
+ llvm_unreachable("Invalid BitCast");
+
+ // If src is floating point, cast to integer first.
+ TempSrc.AggregateVal.resize(SrcNum);
+ if (SrcElemTy->isFloatTy()) {
+ for (unsigned i = 0; i < SrcNum; i++)
+ TempSrc.AggregateVal[i].IntVal =
+ APInt::floatToBits(SrcVec.AggregateVal[i].FloatVal);
+
+ } else if (SrcElemTy->isDoubleTy()) {
+ for (unsigned i = 0; i < SrcNum; i++)
+ TempSrc.AggregateVal[i].IntVal =
+ APInt::doubleToBits(SrcVec.AggregateVal[i].DoubleVal);
+ } else if (SrcElemTy->isIntegerTy()) {
+ for (unsigned i = 0; i < SrcNum; i++)
+ TempSrc.AggregateVal[i].IntVal = SrcVec.AggregateVal[i].IntVal;
+ } else {
+ // Pointers are not allowed as the element type of vector.
+ llvm_unreachable("Invalid Bitcast");
+ }
+
+ // now TempSrc is integer type vector
+ if (DstNum < SrcNum) {
+ // Example: bitcast <4 x i32> <i32 0, i32 1, i32 2, i32 3> to <2 x i64>
+ unsigned Ratio = SrcNum / DstNum;
+ unsigned SrcElt = 0;
+ for (unsigned i = 0; i < DstNum; i++) {
+ GenericValue Elt;
+ Elt.IntVal = 0;
+ Elt.IntVal = Elt.IntVal.zext(DstBitSize);
+ unsigned ShiftAmt = isLittleEndian ? 0 : SrcBitSize * (Ratio - 1);
+ for (unsigned j = 0; j < Ratio; j++) {
+ APInt Tmp;
+ Tmp = Tmp.zext(SrcBitSize);
+ Tmp = TempSrc.AggregateVal[SrcElt++].IntVal;
+ Tmp = Tmp.zext(DstBitSize);
+ Tmp = Tmp.shl(ShiftAmt);
+ ShiftAmt += isLittleEndian ? SrcBitSize : -SrcBitSize;
+ Elt.IntVal |= Tmp;
+ }
+ TempDst.AggregateVal.push_back(Elt);
+ }
+ } else {
+ // Example: bitcast <2 x i64> <i64 0, i64 1> to <4 x i32>
+ unsigned Ratio = DstNum / SrcNum;
+ for (unsigned i = 0; i < SrcNum; i++) {
+ unsigned ShiftAmt = isLittleEndian ? 0 : DstBitSize * (Ratio - 1);
+ for (unsigned j = 0; j < Ratio; j++) {
+ GenericValue Elt;
+ Elt.IntVal = Elt.IntVal.zext(SrcBitSize);
+ Elt.IntVal = TempSrc.AggregateVal[i].IntVal;
+ Elt.IntVal = Elt.IntVal.lshr(ShiftAmt);
+ // it could be DstBitSize == SrcBitSize, so check it
+ if (DstBitSize < SrcBitSize)
+ Elt.IntVal = Elt.IntVal.trunc(DstBitSize);
+ ShiftAmt += isLittleEndian ? DstBitSize : -DstBitSize;
+ TempDst.AggregateVal.push_back(Elt);
+ }
+ }
+ }
+
+ // convert result from integer to specified type
+ if (DstTy->getTypeID() == Type::VectorTyID) {
+ if (DstElemTy->isDoubleTy()) {
+ Dest.AggregateVal.resize(DstNum);
+ for (unsigned i = 0; i < DstNum; i++)
+ Dest.AggregateVal[i].DoubleVal =
+ TempDst.AggregateVal[i].IntVal.bitsToDouble();
+ } else if (DstElemTy->isFloatTy()) {
+ Dest.AggregateVal.resize(DstNum);
+ for (unsigned i = 0; i < DstNum; i++)
+ Dest.AggregateVal[i].FloatVal =
+ TempDst.AggregateVal[i].IntVal.bitsToFloat();
+ } else {
+ Dest = TempDst;
+ }
+ } else {
+ if (DstElemTy->isDoubleTy())
+ Dest.DoubleVal = TempDst.AggregateVal[0].IntVal.bitsToDouble();
+ else if (DstElemTy->isFloatTy()) {
+ Dest.FloatVal = TempDst.AggregateVal[0].IntVal.bitsToFloat();
+ } else {
+ Dest.IntVal = TempDst.AggregateVal[0].IntVal;
+ }
+ }
+ } else { // if ((SrcTy->getTypeID() == Type::VectorTyID) ||
+ // (DstTy->getTypeID() == Type::VectorTyID))
+
+ // scalar src bitcast to scalar dst
+ if (DstTy->isPointerTy()) {
+ assert(SrcTy->isPointerTy() && "Invalid BitCast");
+ Dest.PointerVal = Src.PointerVal;
+ } else if (DstTy->isIntegerTy()) {
+ if (SrcTy->isFloatTy())
+ Dest.IntVal = APInt::floatToBits(Src.FloatVal);
+ else if (SrcTy->isDoubleTy()) {
+ Dest.IntVal = APInt::doubleToBits(Src.DoubleVal);
+ } else if (SrcTy->isIntegerTy()) {
+ Dest.IntVal = Src.IntVal;
+ } else {
+ llvm_unreachable("Invalid BitCast");
+ }
+ } else if (DstTy->isFloatTy()) {
+ if (SrcTy->isIntegerTy())
+ Dest.FloatVal = Src.IntVal.bitsToFloat();
+ else {
+ Dest.FloatVal = Src.FloatVal;
+ }
+ } else if (DstTy->isDoubleTy()) {
+ if (SrcTy->isIntegerTy())
+ Dest.DoubleVal = Src.IntVal.bitsToDouble();
+ else {
+ Dest.DoubleVal = Src.DoubleVal;
+ }
+ } else {
+ llvm_unreachable("Invalid Bitcast");
}
}
- InInstruction = false;
-
- // Reset the current frame location to the top of stack
- CurFrame = ECStack.size()-1;
- if (CurFrame == -1) return false; // No breakpoint if no code
+ return Dest;
+}
- // Return true if there is a breakpoint annotation on the instruction...
- return ECStack[CurFrame].CurInst->getAnnotation(BreakpointAID) != 0;
+void Interpreter::visitTruncInst(TruncInst &I) {
+ ExecutionContext &SF = ECStack.back();
+ SetValue(&I, executeTruncInst(I.getOperand(0), I.getType(), SF), SF);
}
-void Interpreter::stepInstruction() { // Do the 'step' command
- if (ECStack.empty()) {
- cout << "Error: no program running, cannot step!\n";
- return;
- }
+void Interpreter::visitSExtInst(SExtInst &I) {
+ ExecutionContext &SF = ECStack.back();
+ SetValue(&I, executeSExtInst(I.getOperand(0), I.getType(), SF), SF);
+}
- // Run an instruction...
- executeInstruction();
+void Interpreter::visitZExtInst(ZExtInst &I) {
+ ExecutionContext &SF = ECStack.back();
+ SetValue(&I, executeZExtInst(I.getOperand(0), I.getType(), SF), SF);
+}
- // Print the next instruction to execute...
- printCurrentInstruction();
+void Interpreter::visitFPTruncInst(FPTruncInst &I) {
+ ExecutionContext &SF = ECStack.back();
+ SetValue(&I, executeFPTruncInst(I.getOperand(0), I.getType(), SF), SF);
}
-// --- UI Stuff...
-void Interpreter::nextInstruction() { // Do the 'next' command
- if (ECStack.empty()) {
- cout << "Error: no program running, cannot 'next'!\n";
- return;
+void Interpreter::visitFPExtInst(FPExtInst &I) {
+ ExecutionContext &SF = ECStack.back();
+ SetValue(&I, executeFPExtInst(I.getOperand(0), I.getType(), SF), SF);
+}
+
+void Interpreter::visitUIToFPInst(UIToFPInst &I) {
+ ExecutionContext &SF = ECStack.back();
+ SetValue(&I, executeUIToFPInst(I.getOperand(0), I.getType(), SF), SF);
+}
+
+void Interpreter::visitSIToFPInst(SIToFPInst &I) {
+ ExecutionContext &SF = ECStack.back();
+ SetValue(&I, executeSIToFPInst(I.getOperand(0), I.getType(), SF), SF);
+}
+
+void Interpreter::visitFPToUIInst(FPToUIInst &I) {
+ ExecutionContext &SF = ECStack.back();
+ SetValue(&I, executeFPToUIInst(I.getOperand(0), I.getType(), SF), SF);
+}
+
+void Interpreter::visitFPToSIInst(FPToSIInst &I) {
+ ExecutionContext &SF = ECStack.back();
+ SetValue(&I, executeFPToSIInst(I.getOperand(0), I.getType(), SF), SF);
+}
+
+void Interpreter::visitPtrToIntInst(PtrToIntInst &I) {
+ ExecutionContext &SF = ECStack.back();
+ SetValue(&I, executePtrToIntInst(I.getOperand(0), I.getType(), SF), SF);
+}
+
+void Interpreter::visitIntToPtrInst(IntToPtrInst &I) {
+ ExecutionContext &SF = ECStack.back();
+ SetValue(&I, executeIntToPtrInst(I.getOperand(0), I.getType(), SF), SF);
+}
+
+void Interpreter::visitBitCastInst(BitCastInst &I) {
+ ExecutionContext &SF = ECStack.back();
+ SetValue(&I, executeBitCastInst(I.getOperand(0), I.getType(), SF), SF);
+}
+
+#define IMPLEMENT_VAARG(TY) \
+ case Type::TY##TyID: Dest.TY##Val = Src.TY##Val; break
+
+void Interpreter::visitVAArgInst(VAArgInst &I) {
+ ExecutionContext &SF = ECStack.back();
+
+ // Get the incoming valist parameter. LLI treats the valist as a
+ // (ec-stack-depth var-arg-index) pair.
+ GenericValue VAList = getOperandValue(I.getOperand(0), SF);
+ GenericValue Dest;
+ GenericValue Src = ECStack[VAList.UIntPairVal.first]
+ .VarArgs[VAList.UIntPairVal.second];
+ Type *Ty = I.getType();
+ switch (Ty->getTypeID()) {
+ case Type::IntegerTyID:
+ Dest.IntVal = Src.IntVal;
+ break;
+ IMPLEMENT_VAARG(Pointer);
+ IMPLEMENT_VAARG(Float);
+ IMPLEMENT_VAARG(Double);
+ default:
+ dbgs() << "Unhandled dest type for vaarg instruction: " << *Ty << "\n";
+ llvm_unreachable(nullptr);
}
- // If this is a call instruction, step over the call instruction...
- // TODO: ICALL, CALL WITH, ...
- if (ECStack.back().CurInst->getOpcode() == Instruction::Call) {
- unsigned StackSize = ECStack.size();
- // Step into the function...
- if (executeInstruction()) {
- // Hit a breakpoint, print current instruction, then return to user...
- cout << "Breakpoint hit!\n";
- printCurrentInstruction();
- return;
- }
+ // Set the Value of this Instruction.
+ SetValue(&I, Dest, SF);
- // If we we able to step into the function, finish it now. We might not be
- // able the step into a function, if it's external for example.
- if (ECStack.size() != StackSize)
- finish(); // Finish executing the function...
- else
- printCurrentInstruction();
+ // Move the pointer to the next vararg.
+ ++VAList.UIntPairVal.second;
+}
+
+void Interpreter::visitExtractElementInst(ExtractElementInst &I) {
+ ExecutionContext &SF = ECStack.back();
+ GenericValue Src1 = getOperandValue(I.getOperand(0), SF);
+ GenericValue Src2 = getOperandValue(I.getOperand(1), SF);
+ GenericValue Dest;
+
+ Type *Ty = I.getType();
+ const unsigned indx = unsigned(Src2.IntVal.getZExtValue());
+ if(Src1.AggregateVal.size() > indx) {
+ switch (Ty->getTypeID()) {
+ default:
+ dbgs() << "Unhandled destination type for extractelement instruction: "
+ << *Ty << "\n";
+ llvm_unreachable(nullptr);
+ break;
+ case Type::IntegerTyID:
+ Dest.IntVal = Src1.AggregateVal[indx].IntVal;
+ break;
+ case Type::FloatTyID:
+ Dest.FloatVal = Src1.AggregateVal[indx].FloatVal;
+ break;
+ case Type::DoubleTyID:
+ Dest.DoubleVal = Src1.AggregateVal[indx].DoubleVal;
+ break;
+ }
} else {
- // Normal instruction, just step...
- stepInstruction();
+ dbgs() << "Invalid index in extractelement instruction\n";
}
+
+ SetValue(&I, Dest, SF);
}
-void Interpreter::run() {
- if (ECStack.empty()) {
- cout << "Error: no program running, cannot run!\n";
- return;
- }
+void Interpreter::visitInsertElementInst(InsertElementInst &I) {
+ ExecutionContext &SF = ECStack.back();
+ Type *Ty = I.getType();
- bool HitBreakpoint = false;
- while (!ECStack.empty() && !HitBreakpoint) {
- // Run an instruction...
- HitBreakpoint = executeInstruction();
- }
+ if(!(Ty->isVectorTy()) )
+ llvm_unreachable("Unhandled dest type for insertelement instruction");
+
+ GenericValue Src1 = getOperandValue(I.getOperand(0), SF);
+ GenericValue Src2 = getOperandValue(I.getOperand(1), SF);
+ GenericValue Src3 = getOperandValue(I.getOperand(2), SF);
+ GenericValue Dest;
- if (HitBreakpoint) {
- cout << "Breakpoint hit!\n";
+ Type *TyContained = Ty->getContainedType(0);
+
+ const unsigned indx = unsigned(Src3.IntVal.getZExtValue());
+ Dest.AggregateVal = Src1.AggregateVal;
+
+ if(Src1.AggregateVal.size() <= indx)
+ llvm_unreachable("Invalid index in insertelement instruction");
+ switch (TyContained->getTypeID()) {
+ default:
+ llvm_unreachable("Unhandled dest type for insertelement instruction");
+ case Type::IntegerTyID:
+ Dest.AggregateVal[indx].IntVal = Src2.IntVal;
+ break;
+ case Type::FloatTyID:
+ Dest.AggregateVal[indx].FloatVal = Src2.FloatVal;
+ break;
+ case Type::DoubleTyID:
+ Dest.AggregateVal[indx].DoubleVal = Src2.DoubleVal;
+ break;
}
- // Print the next instruction to execute...
- printCurrentInstruction();
+ SetValue(&I, Dest, SF);
}
-void Interpreter::finish() {
- if (ECStack.empty()) {
- cout << "Error: no program running, cannot run!\n";
- return;
+void Interpreter::visitShuffleVectorInst(ShuffleVectorInst &I){
+ ExecutionContext &SF = ECStack.back();
+
+ Type *Ty = I.getType();
+ if(!(Ty->isVectorTy()))
+ llvm_unreachable("Unhandled dest type for shufflevector instruction");
+
+ GenericValue Src1 = getOperandValue(I.getOperand(0), SF);
+ GenericValue Src2 = getOperandValue(I.getOperand(1), SF);
+ GenericValue Src3 = getOperandValue(I.getOperand(2), SF);
+ GenericValue Dest;
+
+ // There is no need to check types of src1 and src2, because the compiled
+ // bytecode can't contain different types for src1 and src2 for a
+ // shufflevector instruction.
+
+ Type *TyContained = Ty->getContainedType(0);
+ unsigned src1Size = (unsigned)Src1.AggregateVal.size();
+ unsigned src2Size = (unsigned)Src2.AggregateVal.size();
+ unsigned src3Size = (unsigned)Src3.AggregateVal.size();
+
+ Dest.AggregateVal.resize(src3Size);
+
+ switch (TyContained->getTypeID()) {
+ default:
+ llvm_unreachable("Unhandled dest type for insertelement instruction");
+ break;
+ case Type::IntegerTyID:
+ for( unsigned i=0; i<src3Size; i++) {
+ unsigned j = Src3.AggregateVal[i].IntVal.getZExtValue();
+ if(j < src1Size)
+ Dest.AggregateVal[i].IntVal = Src1.AggregateVal[j].IntVal;
+ else if(j < src1Size + src2Size)
+ Dest.AggregateVal[i].IntVal = Src2.AggregateVal[j-src1Size].IntVal;
+ else
+ // The selector may not be greater than sum of lengths of first and
+ // second operands and llasm should not allow situation like
+ // %tmp = shufflevector <2 x i32> <i32 3, i32 4>, <2 x i32> undef,
+ // <2 x i32> < i32 0, i32 5 >,
+ // where i32 5 is invalid, but let it be additional check here:
+ llvm_unreachable("Invalid mask in shufflevector instruction");
+ }
+ break;
+ case Type::FloatTyID:
+ for( unsigned i=0; i<src3Size; i++) {
+ unsigned j = Src3.AggregateVal[i].IntVal.getZExtValue();
+ if(j < src1Size)
+ Dest.AggregateVal[i].FloatVal = Src1.AggregateVal[j].FloatVal;
+ else if(j < src1Size + src2Size)
+ Dest.AggregateVal[i].FloatVal = Src2.AggregateVal[j-src1Size].FloatVal;
+ else
+ llvm_unreachable("Invalid mask in shufflevector instruction");
+ }
+ break;
+ case Type::DoubleTyID:
+ for( unsigned i=0; i<src3Size; i++) {
+ unsigned j = Src3.AggregateVal[i].IntVal.getZExtValue();
+ if(j < src1Size)
+ Dest.AggregateVal[i].DoubleVal = Src1.AggregateVal[j].DoubleVal;
+ else if(j < src1Size + src2Size)
+ Dest.AggregateVal[i].DoubleVal =
+ Src2.AggregateVal[j-src1Size].DoubleVal;
+ else
+ llvm_unreachable("Invalid mask in shufflevector instruction");
+ }
+ break;
}
+ SetValue(&I, Dest, SF);
+}
- unsigned StackSize = ECStack.size();
- bool HitBreakpoint = false;
- while (ECStack.size() >= StackSize && !HitBreakpoint) {
- // Run an instruction...
- HitBreakpoint = executeInstruction();
+void Interpreter::visitExtractValueInst(ExtractValueInst &I) {
+ ExecutionContext &SF = ECStack.back();
+ Value *Agg = I.getAggregateOperand();
+ GenericValue Dest;
+ GenericValue Src = getOperandValue(Agg, SF);
+
+ ExtractValueInst::idx_iterator IdxBegin = I.idx_begin();
+ unsigned Num = I.getNumIndices();
+ GenericValue *pSrc = &Src;
+
+ for (unsigned i = 0 ; i < Num; ++i) {
+ pSrc = &pSrc->AggregateVal[*IdxBegin];
+ ++IdxBegin;
}
- if (HitBreakpoint) {
- cout << "Breakpoint hit!\n";
+ Type *IndexedType = ExtractValueInst::getIndexedType(Agg->getType(), I.getIndices());
+ switch (IndexedType->getTypeID()) {
+ default:
+ llvm_unreachable("Unhandled dest type for extractelement instruction");
+ break;
+ case Type::IntegerTyID:
+ Dest.IntVal = pSrc->IntVal;
+ break;
+ case Type::FloatTyID:
+ Dest.FloatVal = pSrc->FloatVal;
+ break;
+ case Type::DoubleTyID:
+ Dest.DoubleVal = pSrc->DoubleVal;
+ break;
+ case Type::ArrayTyID:
+ case Type::StructTyID:
+ case Type::VectorTyID:
+ Dest.AggregateVal = pSrc->AggregateVal;
+ break;
+ case Type::PointerTyID:
+ Dest.PointerVal = pSrc->PointerVal;
+ break;
}
- // Print the next instruction to execute...
- printCurrentInstruction();
+ SetValue(&I, Dest, SF);
}
+void Interpreter::visitInsertValueInst(InsertValueInst &I) {
+ ExecutionContext &SF = ECStack.back();
+ Value *Agg = I.getAggregateOperand();
-// printCurrentInstruction - Print out the instruction that the virtual PC is
-// at, or fail silently if no program is running.
-//
-void Interpreter::printCurrentInstruction() {
- if (!ECStack.empty()) {
- if (ECStack.back().CurBB->begin() == ECStack.back().CurInst) // print label
- WriteAsOperand(cout, ECStack.back().CurBB) << ":\n";
-
- Instruction &I = *ECStack.back().CurInst;
- InstNumber *IN = (InstNumber*)I.getAnnotation(SlotNumberAID);
- assert(IN && "Instruction has no numbering annotation!");
- cout << "#" << IN->InstNum << I;
- }
-}
-
-void Interpreter::printValue(const Type *Ty, GenericValue V) {
- switch (Ty->getPrimitiveID()) {
- case Type::BoolTyID: cout << (V.BoolVal?"true":"false"); break;
- case Type::SByteTyID:
- cout << (int)V.SByteVal << " '" << V.SByteVal << "'"; break;
- case Type::UByteTyID:
- cout << (unsigned)V.UByteVal << " '" << V.UByteVal << "'"; break;
- case Type::ShortTyID: cout << V.ShortVal; break;
- case Type::UShortTyID: cout << V.UShortVal; break;
- case Type::IntTyID: cout << V.IntVal; break;
- case Type::UIntTyID: cout << V.UIntVal; break;
- case Type::LongTyID: cout << (long)V.LongVal; break;
- case Type::ULongTyID: cout << (unsigned long)V.ULongVal; break;
- case Type::FloatTyID: cout << V.FloatVal; break;
- case Type::DoubleTyID: cout << V.DoubleVal; break;
- case Type::PointerTyID:cout << (void*)V.PointerVal; break;
- default:
- cout << "- Don't know how to print value of this type!";
+ GenericValue Src1 = getOperandValue(Agg, SF);
+ GenericValue Src2 = getOperandValue(I.getOperand(1), SF);
+ GenericValue Dest = Src1; // Dest is a slightly changed Src1
+
+ ExtractValueInst::idx_iterator IdxBegin = I.idx_begin();
+ unsigned Num = I.getNumIndices();
+
+ GenericValue *pDest = &Dest;
+ for (unsigned i = 0 ; i < Num; ++i) {
+ pDest = &pDest->AggregateVal[*IdxBegin];
+ ++IdxBegin;
+ }
+ // pDest points to the target value in the Dest now
+
+ Type *IndexedType = ExtractValueInst::getIndexedType(Agg->getType(), I.getIndices());
+
+ switch (IndexedType->getTypeID()) {
+ default:
+ llvm_unreachable("Unhandled dest type for insertelement instruction");
+ break;
+ case Type::IntegerTyID:
+ pDest->IntVal = Src2.IntVal;
+ break;
+ case Type::FloatTyID:
+ pDest->FloatVal = Src2.FloatVal;
+ break;
+ case Type::DoubleTyID:
+ pDest->DoubleVal = Src2.DoubleVal;
+ break;
+ case Type::ArrayTyID:
+ case Type::StructTyID:
+ case Type::VectorTyID:
+ pDest->AggregateVal = Src2.AggregateVal;
+ break;
+ case Type::PointerTyID:
+ pDest->PointerVal = Src2.PointerVal;
break;
}
-}
-void Interpreter::print(const Type *Ty, GenericValue V) {
- CW << Ty << " ";
- printValue(Ty, V);
+ SetValue(&I, Dest, SF);
}
-void Interpreter::print(const std::string &Name) {
- Value *PickedVal = ChooseOneOption(Name, LookupMatchingNames(Name));
- if (!PickedVal) return;
+GenericValue Interpreter::getConstantExprValue (ConstantExpr *CE,
+ ExecutionContext &SF) {
+ switch (CE->getOpcode()) {
+ case Instruction::Trunc:
+ return executeTruncInst(CE->getOperand(0), CE->getType(), SF);
+ case Instruction::ZExt:
+ return executeZExtInst(CE->getOperand(0), CE->getType(), SF);
+ case Instruction::SExt:
+ return executeSExtInst(CE->getOperand(0), CE->getType(), SF);
+ case Instruction::FPTrunc:
+ return executeFPTruncInst(CE->getOperand(0), CE->getType(), SF);
+ case Instruction::FPExt:
+ return executeFPExtInst(CE->getOperand(0), CE->getType(), SF);
+ case Instruction::UIToFP:
+ return executeUIToFPInst(CE->getOperand(0), CE->getType(), SF);
+ case Instruction::SIToFP:
+ return executeSIToFPInst(CE->getOperand(0), CE->getType(), SF);
+ case Instruction::FPToUI:
+ return executeFPToUIInst(CE->getOperand(0), CE->getType(), SF);
+ case Instruction::FPToSI:
+ return executeFPToSIInst(CE->getOperand(0), CE->getType(), SF);
+ case Instruction::PtrToInt:
+ return executePtrToIntInst(CE->getOperand(0), CE->getType(), SF);
+ case Instruction::IntToPtr:
+ return executeIntToPtrInst(CE->getOperand(0), CE->getType(), SF);
+ case Instruction::BitCast:
+ return executeBitCastInst(CE->getOperand(0), CE->getType(), SF);
+ case Instruction::GetElementPtr:
+ return executeGEPOperation(CE->getOperand(0), gep_type_begin(CE),
+ gep_type_end(CE), SF);
+ case Instruction::FCmp:
+ case Instruction::ICmp:
+ return executeCmpInst(CE->getPredicate(),
+ getOperandValue(CE->getOperand(0), SF),
+ getOperandValue(CE->getOperand(1), SF),
+ CE->getOperand(0)->getType());
+ case Instruction::Select:
+ return executeSelectInst(getOperandValue(CE->getOperand(0), SF),
+ getOperandValue(CE->getOperand(1), SF),
+ getOperandValue(CE->getOperand(2), SF),
+ CE->getOperand(0)->getType());
+ default :
+ break;
+ }
- if (const Function *F = dyn_cast<const Function>(PickedVal)) {
- CW << F; // Print the function
- } else if (const Type *Ty = dyn_cast<const Type>(PickedVal)) {
- CW << "type %" << Name << " = " << Ty->getDescription() << "\n";
- } else if (const BasicBlock *BB = dyn_cast<const BasicBlock>(PickedVal)) {
- CW << BB; // Print the basic block
- } else { // Otherwise there should be an annotation for the slot#
- print(PickedVal->getType(),
- getOperandValue(PickedVal, ECStack[CurFrame]));
- cout << "\n";
+ // The cases below here require a GenericValue parameter for the result
+ // so we initialize one, compute it and then return it.
+ GenericValue Op0 = getOperandValue(CE->getOperand(0), SF);
+ GenericValue Op1 = getOperandValue(CE->getOperand(1), SF);
+ GenericValue Dest;
+ Type * Ty = CE->getOperand(0)->getType();
+ switch (CE->getOpcode()) {
+ 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 & 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;
+ case Instruction::LShr:
+ Dest.IntVal = Op0.IntVal.lshr(Op1.IntVal.getZExtValue());
+ break;
+ case Instruction::AShr:
+ Dest.IntVal = Op0.IntVal.ashr(Op1.IntVal.getZExtValue());
+ break;
+ default:
+ dbgs() << "Unhandled ConstantExpr: " << *CE << "\n";
+ llvm_unreachable("Unhandled ConstantExpr");
}
+ return Dest;
}
-void Interpreter::infoValue(const std::string &Name) {
- Value *PickedVal = ChooseOneOption(Name, LookupMatchingNames(Name));
- if (!PickedVal) return;
-
- cout << "Value: ";
- print(PickedVal->getType(),
- getOperandValue(PickedVal, ECStack[CurFrame]));
- cout << "\n";
- printOperandInfo(PickedVal, ECStack[CurFrame]);
+GenericValue Interpreter::getOperandValue(Value *V, ExecutionContext &SF) {
+ if (ConstantExpr *CE = dyn_cast<ConstantExpr>(V)) {
+ return getConstantExprValue(CE, SF);
+ } else if (Constant *CPV = dyn_cast<Constant>(V)) {
+ return getConstantValue(CPV);
+ } else if (GlobalValue *GV = dyn_cast<GlobalValue>(V)) {
+ return PTOGV(getPointerToGlobal(GV));
+ } else {
+ return SF.Values[V];
+ }
}
-// printStackFrame - Print information about the specified stack frame, or -1
-// for the default one.
+//===----------------------------------------------------------------------===//
+// Dispatch and Execution Code
+//===----------------------------------------------------------------------===//
+
+//===----------------------------------------------------------------------===//
+// callFunction - Execute the specified function...
//
-void Interpreter::printStackFrame(int FrameNo) {
- if (FrameNo == -1) FrameNo = CurFrame;
- Function *F = ECStack[FrameNo].CurMethod;
- const Type *RetTy = F->getReturnType();
+void Interpreter::callFunction(Function *F,
+ const std::vector<GenericValue> &ArgVals) {
+ assert((ECStack.empty() || !ECStack.back().Caller.getInstruction() ||
+ ECStack.back().Caller.arg_size() == ArgVals.size()) &&
+ "Incorrect number of arguments passed into function call!");
+ // Make a new stack frame... and fill it in.
+ ECStack.push_back(ExecutionContext());
+ ExecutionContext &StackFrame = ECStack.back();
+ StackFrame.CurFunction = F;
+
+ // Special handling for external functions.
+ if (F->isDeclaration()) {
+ GenericValue Result = callExternalFunction (F, ArgVals);
+ // Simulate a 'ret' instruction of the appropriate type.
+ popStackAndReturnValueToCaller (F->getReturnType (), Result);
+ return;
+ }
- CW << ((FrameNo == CurFrame) ? '>' : '-') << "#" << FrameNo << ". "
- << (Value*)RetTy << " \"" << F->getName() << "\"(";
-
+ // Get pointers to first LLVM BB & Instruction in function.
+ StackFrame.CurBB = F->begin();
+ StackFrame.CurInst = StackFrame.CurBB->begin();
+
+ // Run through the function arguments and initialize their values...
+ assert((ArgVals.size() == F->arg_size() ||
+ (ArgVals.size() > F->arg_size() && F->getFunctionType()->isVarArg()))&&
+ "Invalid number of values passed to function invocation!");
+
+ // Handle non-varargs arguments...
unsigned i = 0;
- for (Function::aiterator I = F->abegin(), E = F->aend(); I != E; ++I, ++i) {
- if (i != 0) cout << ", ";
- CW << *I << "=";
-
- printValue(I->getType(), getOperandValue(I, ECStack[FrameNo]));
- }
+ 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());
+}
- cout << ")\n";
- if (FrameNo != int(ECStack.size()-1)) {
- BasicBlock::iterator I = ECStack[FrameNo].CurInst;
- CW << --I;
- } else {
- CW << *ECStack[FrameNo].CurInst;
+void Interpreter::run() {
+ while (!ECStack.empty()) {
+ // Interpret a single instruction & increment the "PC".
+ ExecutionContext &SF = ECStack.back(); // Current stack frame
+ Instruction &I = *SF.CurInst++; // Increment before execute
+
+ // Track the number of dynamic instructions executed.
+ ++NumDynamicInsts;
+
+ 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<CallInst>(I) && !isa<InvokeInst>(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
}
}
-
projects / oota-llvm.git / blobdiff