//
// The LLVM Compiler Infrastructure
//
-// This file was developed by the LLVM research group and is distributed under
-// the University of Illinois Open Source License. See LICENSE.TXT for details.
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
#include "llvm/Support/GetElementPtrTypeIterator.h"
#include "llvm/ADT/APInt.h"
#include "llvm/ADT/Statistic.h"
+#include "llvm/Support/CommandLine.h"
#include "llvm/Support/Debug.h"
+#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/MathExtras.h"
+#include <algorithm>
#include <cmath>
+#include <cstring>
using namespace llvm;
STATISTIC(NumDynamicInsts, "Number of dynamic instructions executed");
-static Interpreter *TheEE = 0;
+
+static cl::opt<bool> PrintVolatile("interpreter-print-volatile", cl::Hidden,
+ cl::desc("make the interpreter print every volatile load and store"));
//===----------------------------------------------------------------------===//
// Various Helper Functions
//===----------------------------------------------------------------------===//
-inline void initializeAPInt(GenericValue &GV, const Type* Ty,
- ExecutionContext &SF) {
- if (const IntegerType *ITy = dyn_cast<IntegerType>(Ty))
- GV.APIntVal = SF.getAPInt(ITy->getBitWidth());
-}
-
-static inline uint64_t doSignExtension(uint64_t Val, const IntegerType* ITy) {
- // Determine if the value is signed or not
- bool isSigned = (Val & (1 << (ITy->getBitWidth()-1))) != 0;
- // If its signed, extend the sign bits
- if (isSigned)
- Val |= ~ITy->getBitMask();
- return Val;
-}
-
-static inline void maskToBitWidth(GenericValue& GV, unsigned BitWidth) {
- uint64_t BitMask = ~(uint64_t)(0ull) >> (64-BitWidth);
- if (BitWidth <= 8)
- GV.Int8Val &= BitMask;
- else if (BitWidth <= 16)
- GV.Int16Val &= BitMask;
- else if (BitWidth <= 32)
- GV.Int32Val &= BitMask;
- else if (BitWidth <= 64)
- GV.Int64Val &= BitMask;
- else {
- assert(GV.APIntVal && "Unallocated GV.APIntVal");
- *(GV.APIntVal) &= APInt::getAllOnesValue(BitWidth);
- }
-}
-
static void SetValue(Value *V, GenericValue Val, ExecutionContext &SF) {
SF.Values[V] = Val;
}
-void Interpreter::initializeExecutionEngine() {
- TheEE = this;
-}
-
//===----------------------------------------------------------------------===//
// Binary Instruction Implementations
//===----------------------------------------------------------------------===//
#define IMPLEMENT_BINARY_OPERATOR(OP, TY) \
- case Type::TY##TyID: Dest.TY##Val = Src1.TY##Val OP Src2.TY##Val; break
-
-#define IMPLEMENT_INTEGER_BINOP(OP, TY) \
- case Type::IntegerTyID: { \
- unsigned BitWidth = cast<IntegerType>(TY)->getBitWidth(); \
- if (BitWidth == 1) {\
- Dest.Int1Val = Src1.Int1Val OP Src2.Int1Val; \
- maskToBitWidth(Dest, BitWidth); \
- } else if (BitWidth <= 8) {\
- Dest.Int8Val = Src1.Int8Val OP Src2.Int8Val; \
- maskToBitWidth(Dest, BitWidth); \
- } else if (BitWidth <= 16) {\
- Dest.Int16Val = Src1.Int16Val OP Src2.Int16Val; \
- maskToBitWidth(Dest, BitWidth); \
- } else if (BitWidth <= 32) {\
- Dest.Int32Val = Src1.Int32Val OP Src2.Int32Val; \
- maskToBitWidth(Dest, BitWidth); \
- } else if (BitWidth <= 64) {\
- Dest.Int64Val = Src1.Int64Val OP Src2.Int64Val; \
- maskToBitWidth(Dest, BitWidth); \
- } else \
- *(Dest.APIntVal) = *(Src1.APIntVal) OP *(Src2.APIntVal); \
- break; \
- }
-
-#define IMPLEMENT_SIGNED_BINOP(OP, TY, APOP) \
- if (const IntegerType *ITy = dyn_cast<IntegerType>(TY)) { \
- unsigned BitWidth = ITy->getBitWidth(); \
- if (BitWidth <= 8) { \
- Dest.Int8Val = ((int8_t)Src1.Int8Val) OP ((int8_t)Src2.Int8Val); \
- maskToBitWidth(Dest, BitWidth); \
- } else if (BitWidth <= 16) { \
- Dest.Int16Val = ((int16_t)Src1.Int16Val) OP ((int16_t)Src2.Int16Val); \
- maskToBitWidth(Dest, BitWidth); \
- } else if (BitWidth <= 32) { \
- Dest.Int32Val = ((int32_t)Src1.Int32Val) OP ((int32_t)Src2.Int32Val); \
- maskToBitWidth(Dest, BitWidth); \
- } else if (BitWidth <= 64) { \
- Dest.Int64Val = ((int64_t)Src1.Int64Val) OP ((int64_t)Src2.Int64Val); \
- maskToBitWidth(Dest, BitWidth); \
- } else \
- *(Dest.APIntVal) = Src1.APIntVal->APOP(*(Src2.APIntVal)); \
- } else { \
- cerr << "Unhandled type for " #OP " operator: " << *Ty << "\n"; \
- abort(); \
- }
-
-#define IMPLEMENT_UNSIGNED_BINOP(OP, TY, APOP) \
- if (const IntegerType *ITy = dyn_cast<IntegerType>(TY)) { \
- unsigned BitWidth = ITy->getBitWidth(); \
- if (BitWidth <= 8) {\
- Dest.Int8Val = ((uint8_t)Src1.Int8Val) OP ((uint8_t)Src2.Int8Val); \
- maskToBitWidth(Dest, BitWidth); \
- } else if (BitWidth <= 16) {\
- Dest.Int16Val = ((uint16_t)Src1.Int16Val) OP ((uint16_t)Src2.Int16Val); \
- maskToBitWidth(Dest, BitWidth); \
- } else if (BitWidth <= 32) {\
- Dest.Int32Val = ((uint32_t)Src1.Int32Val) OP ((uint32_t)Src2.Int32Val); \
- maskToBitWidth(Dest, BitWidth); \
- } else if (BitWidth <= 64) {\
- Dest.Int64Val = ((uint64_t)Src1.Int64Val) OP ((uint64_t)Src2.Int64Val); \
- maskToBitWidth(Dest, BitWidth); \
- } else \
- *(Dest.APIntVal) = Src1.APIntVal->APOP(*(Src2.APIntVal)); \
- } else { \
- cerr << "Unhandled type for " #OP " operator: " << *Ty << "\n"; \
- abort(); \
- }
+ case Type::TY##TyID: \
+ Dest.TY##Val = Src1.TY##Val OP Src2.TY##Val; \
+ break
-static void executeAddInst(GenericValue &Dest, GenericValue Src1,
- GenericValue Src2, const Type *Ty) {
+static void executeFAddInst(GenericValue &Dest, GenericValue Src1,
+ GenericValue Src2, const Type *Ty) {
switch (Ty->getTypeID()) {
- IMPLEMENT_INTEGER_BINOP(+, Ty);
IMPLEMENT_BINARY_OPERATOR(+, Float);
IMPLEMENT_BINARY_OPERATOR(+, Double);
default:
- cerr << "Unhandled type for Add instruction: " << *Ty << "\n";
- abort();
+ cerr << "Unhandled type for FAdd instruction: " << *Ty << "\n";
+ llvm_unreachable();
}
}
-static void executeSubInst(GenericValue &Dest, GenericValue Src1,
- GenericValue Src2, const Type *Ty) {
+static void executeFSubInst(GenericValue &Dest, GenericValue Src1,
+ GenericValue Src2, const Type *Ty) {
switch (Ty->getTypeID()) {
- IMPLEMENT_INTEGER_BINOP(-, Ty);
IMPLEMENT_BINARY_OPERATOR(-, Float);
IMPLEMENT_BINARY_OPERATOR(-, Double);
default:
- cerr << "Unhandled type for Sub instruction: " << *Ty << "\n";
- abort();
+ cerr << "Unhandled type for FSub instruction: " << *Ty << "\n";
+ llvm_unreachable();
}
}
-static void executeMulInst(GenericValue &Dest, GenericValue Src1,
- GenericValue Src2, const Type *Ty) {
+static void executeFMulInst(GenericValue &Dest, GenericValue Src1,
+ GenericValue Src2, const Type *Ty) {
switch (Ty->getTypeID()) {
- IMPLEMENT_INTEGER_BINOP(*, Ty);
IMPLEMENT_BINARY_OPERATOR(*, Float);
IMPLEMENT_BINARY_OPERATOR(*, Double);
default:
- cerr << "Unhandled type for Mul instruction: " << *Ty << "\n";
- abort();
+ cerr << "Unhandled type for FMul instruction: " << *Ty << "\n";
+ llvm_unreachable();
}
}
-static void executeUDivInst(GenericValue &Dest, GenericValue Src1,
- GenericValue Src2, const Type *Ty) {
- IMPLEMENT_UNSIGNED_BINOP(/,Ty,udiv)
-}
-
-static void executeSDivInst(GenericValue &Dest, GenericValue Src1,
- GenericValue Src2, const Type *Ty) {
- IMPLEMENT_SIGNED_BINOP(/,Ty,sdiv)
-}
-
static void executeFDivInst(GenericValue &Dest, GenericValue Src1,
GenericValue Src2, const Type *Ty) {
switch (Ty->getTypeID()) {
IMPLEMENT_BINARY_OPERATOR(/, Double);
default:
cerr << "Unhandled type for FDiv instruction: " << *Ty << "\n";
- abort();
+ llvm_unreachable();
}
}
-static void executeURemInst(GenericValue &Dest, GenericValue Src1,
- GenericValue Src2, const Type *Ty) {
- IMPLEMENT_UNSIGNED_BINOP(%,Ty,urem)
-}
-
-static void executeSRemInst(GenericValue &Dest, GenericValue Src1,
- GenericValue Src2, const Type *Ty) {
- IMPLEMENT_SIGNED_BINOP(%,Ty,srem)
-}
-
static void executeFRemInst(GenericValue &Dest, GenericValue Src1,
GenericValue Src2, const Type *Ty) {
switch (Ty->getTypeID()) {
break;
default:
cerr << "Unhandled type for Rem instruction: " << *Ty << "\n";
- abort();
+ llvm_unreachable();
}
}
-static void executeAndInst(GenericValue &Dest, GenericValue Src1,
- GenericValue Src2, const Type *Ty) {
- IMPLEMENT_UNSIGNED_BINOP(&,Ty,And)
-}
-
-static void executeOrInst(GenericValue &Dest, GenericValue Src1,
- GenericValue Src2, const Type *Ty) {
- IMPLEMENT_UNSIGNED_BINOP(|,Ty,Or)
-}
-
-static void executeXorInst(GenericValue &Dest, GenericValue Src1,
- GenericValue Src2, const Type *Ty) {
- IMPLEMENT_UNSIGNED_BINOP(^,Ty,Xor)
-}
-
-#define IMPLEMENT_SIGNED_ICMP(OP, TY, APOP) \
- case Type::IntegerTyID: { \
- const IntegerType* ITy = cast<IntegerType>(TY); \
- unsigned BitWidth = ITy->getBitWidth(); \
- int64_t LHS = 0, RHS = 0; \
- if (BitWidth <= 8) { \
- LHS = int64_t(doSignExtension(uint64_t(Src1.Int8Val), ITy)); \
- RHS = int64_t(doSignExtension(uint64_t(Src2.Int8Val), ITy)); \
- Dest.Int1Val = LHS OP RHS; \
- } else if (BitWidth <= 16) { \
- LHS = int64_t(doSignExtension(uint64_t(Src1.Int16Val), ITy)); \
- RHS = int64_t(doSignExtension(uint64_t(Src2.Int16Val), ITy)); \
- Dest.Int1Val = LHS OP RHS; \
- } else if (BitWidth <= 32) { \
- LHS = int64_t(doSignExtension(uint64_t(Src1.Int32Val), ITy)); \
- RHS = int64_t(doSignExtension(uint64_t(Src2.Int32Val), ITy)); \
- Dest.Int1Val = LHS OP RHS; \
- } else if (BitWidth <= 64) { \
- LHS = int64_t(doSignExtension(uint64_t(Src1.Int64Val), ITy)); \
- RHS = int64_t(doSignExtension(uint64_t(Src2.Int64Val), ITy)); \
- Dest.Int1Val = LHS OP RHS; \
- } else { \
- Dest.Int1Val = Src1.APIntVal->APOP(*(Src2.APIntVal)); \
- } \
- break; \
- }
-
-#define IMPLEMENT_UNSIGNED_ICMP(OP, TY, APOP) \
- case Type::IntegerTyID: { \
- unsigned BitWidth = cast<IntegerType>(TY)->getBitWidth(); \
- if (BitWidth == 1) { \
- Dest.Int1Val = ((uint8_t)Src1.Int1Val) OP ((uint8_t)Src2.Int1Val); \
- maskToBitWidth(Dest, BitWidth); \
- } else if (BitWidth <= 8) { \
- Dest.Int1Val = ((uint8_t)Src1.Int8Val) OP ((uint8_t)Src2.Int8Val); \
- maskToBitWidth(Dest, BitWidth); \
- } else if (BitWidth <= 16) { \
- Dest.Int1Val = ((uint16_t)Src1.Int16Val) OP ((uint16_t)Src2.Int16Val); \
- maskToBitWidth(Dest, BitWidth); \
- } else if (BitWidth <= 32) { \
- Dest.Int1Val = ((uint32_t)Src1.Int32Val) OP ((uint32_t)Src2.Int32Val); \
- maskToBitWidth(Dest, BitWidth); \
- } else if (BitWidth <= 64) { \
- Dest.Int1Val = ((uint64_t)Src1.Int64Val) OP ((uint64_t)Src2.Int64Val); \
- maskToBitWidth(Dest, BitWidth); \
- } else { \
- Dest.Int1Val = Src1.APIntVal->APOP(*(Src2.APIntVal)); \
- } \
- break; \
- }
+#define IMPLEMENT_INTEGER_ICMP(OP, TY) \
+ case Type::IntegerTyID: \
+ Dest.IntVal = APInt(1,Src1.IntVal.OP(Src2.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
// comparisons if they contain garbage.
#define IMPLEMENT_POINTER_ICMP(OP) \
case Type::PointerTyID: \
- Dest.Int1Val = (void*)(intptr_t)Src1.PointerVal OP \
- (void*)(intptr_t)Src2.PointerVal; break
+ Dest.IntVal = APInt(1,(void*)(intptr_t)Src1.PointerVal OP \
+ (void*)(intptr_t)Src2.PointerVal); \
+ break;
static GenericValue executeICMP_EQ(GenericValue Src1, GenericValue Src2,
const Type *Ty) {
GenericValue Dest;
switch (Ty->getTypeID()) {
- IMPLEMENT_UNSIGNED_ICMP(==, Ty, eq);
+ IMPLEMENT_INTEGER_ICMP(eq,Ty);
IMPLEMENT_POINTER_ICMP(==);
default:
cerr << "Unhandled type for ICMP_EQ predicate: " << *Ty << "\n";
- abort();
+ llvm_unreachable();
}
return Dest;
}
const Type *Ty) {
GenericValue Dest;
switch (Ty->getTypeID()) {
- IMPLEMENT_UNSIGNED_ICMP(!=, Ty, ne);
+ IMPLEMENT_INTEGER_ICMP(ne,Ty);
IMPLEMENT_POINTER_ICMP(!=);
default:
cerr << "Unhandled type for ICMP_NE predicate: " << *Ty << "\n";
- abort();
+ llvm_unreachable();
}
return Dest;
}
const Type *Ty) {
GenericValue Dest;
switch (Ty->getTypeID()) {
- IMPLEMENT_UNSIGNED_ICMP(<, Ty, ult);
+ IMPLEMENT_INTEGER_ICMP(ult,Ty);
IMPLEMENT_POINTER_ICMP(<);
default:
cerr << "Unhandled type for ICMP_ULT predicate: " << *Ty << "\n";
- abort();
+ llvm_unreachable();
}
return Dest;
}
const Type *Ty) {
GenericValue Dest;
switch (Ty->getTypeID()) {
- IMPLEMENT_SIGNED_ICMP(<, Ty, slt);
+ IMPLEMENT_INTEGER_ICMP(slt,Ty);
IMPLEMENT_POINTER_ICMP(<);
default:
cerr << "Unhandled type for ICMP_SLT predicate: " << *Ty << "\n";
- abort();
+ llvm_unreachable();
}
return Dest;
}
const Type *Ty) {
GenericValue Dest;
switch (Ty->getTypeID()) {
- IMPLEMENT_UNSIGNED_ICMP(>, Ty, ugt);
+ IMPLEMENT_INTEGER_ICMP(ugt,Ty);
IMPLEMENT_POINTER_ICMP(>);
default:
cerr << "Unhandled type for ICMP_UGT predicate: " << *Ty << "\n";
- abort();
+ llvm_unreachable();
}
return Dest;
}
const Type *Ty) {
GenericValue Dest;
switch (Ty->getTypeID()) {
- IMPLEMENT_SIGNED_ICMP(>, Ty, sgt);
+ IMPLEMENT_INTEGER_ICMP(sgt,Ty);
IMPLEMENT_POINTER_ICMP(>);
default:
cerr << "Unhandled type for ICMP_SGT predicate: " << *Ty << "\n";
- abort();
+ llvm_unreachable();
}
return Dest;
}
const Type *Ty) {
GenericValue Dest;
switch (Ty->getTypeID()) {
- IMPLEMENT_UNSIGNED_ICMP(<=, Ty, ule);
+ IMPLEMENT_INTEGER_ICMP(ule,Ty);
IMPLEMENT_POINTER_ICMP(<=);
default:
cerr << "Unhandled type for ICMP_ULE predicate: " << *Ty << "\n";
- abort();
+ llvm_unreachable();
}
return Dest;
}
const Type *Ty) {
GenericValue Dest;
switch (Ty->getTypeID()) {
- IMPLEMENT_SIGNED_ICMP(<=, Ty, sle);
+ IMPLEMENT_INTEGER_ICMP(sle,Ty);
IMPLEMENT_POINTER_ICMP(<=);
default:
cerr << "Unhandled type for ICMP_SLE predicate: " << *Ty << "\n";
- abort();
+ llvm_unreachable();
}
return Dest;
}
const Type *Ty) {
GenericValue Dest;
switch (Ty->getTypeID()) {
- IMPLEMENT_UNSIGNED_ICMP(>=, Ty, uge);
+ IMPLEMENT_INTEGER_ICMP(uge,Ty);
IMPLEMENT_POINTER_ICMP(>=);
default:
cerr << "Unhandled type for ICMP_UGE predicate: " << *Ty << "\n";
- abort();
+ llvm_unreachable();
}
return Dest;
}
const Type *Ty) {
GenericValue Dest;
switch (Ty->getTypeID()) {
- IMPLEMENT_SIGNED_ICMP(>=, Ty, sge);
+ IMPLEMENT_INTEGER_ICMP(sge,Ty);
IMPLEMENT_POINTER_ICMP(>=);
default:
cerr << "Unhandled type for ICMP_SGE predicate: " << *Ty << "\n";
- abort();
+ llvm_unreachable();
}
return Dest;
}
case ICmpInst::ICMP_SGE: R = executeICMP_SGE(Src1, Src2, Ty); break;
default:
cerr << "Don't know how to handle this ICmp predicate!\n-->" << I;
- abort();
+ llvm_unreachable();
}
SetValue(&I, R, SF);
}
#define IMPLEMENT_FCMP(OP, TY) \
- case Type::TY##TyID: Dest.Int1Val = Src1.TY##Val OP Src2.TY##Val; break
+ case Type::TY##TyID: \
+ Dest.IntVal = APInt(1,Src1.TY##Val OP Src2.TY##Val); \
+ break
static GenericValue executeFCMP_OEQ(GenericValue Src1, GenericValue Src2,
const Type *Ty) {
IMPLEMENT_FCMP(==, Double);
default:
cerr << "Unhandled type for FCmp EQ instruction: " << *Ty << "\n";
- abort();
+ llvm_unreachable();
}
return Dest;
}
default:
cerr << "Unhandled type for FCmp NE instruction: " << *Ty << "\n";
- abort();
+ llvm_unreachable();
}
return Dest;
}
IMPLEMENT_FCMP(<=, Double);
default:
cerr << "Unhandled type for FCmp LE instruction: " << *Ty << "\n";
- abort();
+ llvm_unreachable();
}
return Dest;
}
IMPLEMENT_FCMP(>=, Double);
default:
cerr << "Unhandled type for FCmp GE instruction: " << *Ty << "\n";
- abort();
+ llvm_unreachable();
}
return Dest;
}
IMPLEMENT_FCMP(<, Double);
default:
cerr << "Unhandled type for FCmp LT instruction: " << *Ty << "\n";
- abort();
+ llvm_unreachable();
}
return Dest;
}
IMPLEMENT_FCMP(>, Double);
default:
cerr << "Unhandled type for FCmp GT instruction: " << *Ty << "\n";
- abort();
+ llvm_unreachable();
}
return Dest;
}
-#define IMPLEMENT_UNORDERED(TY, X,Y) \
- if (TY == Type::FloatTy) \
- if (X.FloatVal != X.FloatVal || Y.FloatVal != Y.FloatVal) { \
- Dest.Int1Val = true; \
- return Dest; \
- } \
- else if (X.DoubleVal != X.DoubleVal || Y.DoubleVal != Y.DoubleVal) { \
- Dest.Int1Val = true; \
- return Dest; \
- }
+#define IMPLEMENT_UNORDERED(TY, X,Y) \
+ if (TY == Type::FloatTy) { \
+ if (X.FloatVal != X.FloatVal || Y.FloatVal != Y.FloatVal) { \
+ Dest.IntVal = APInt(1,true); \
+ return Dest; \
+ } \
+ } else if (X.DoubleVal != X.DoubleVal || Y.DoubleVal != Y.DoubleVal) { \
+ Dest.IntVal = APInt(1,true); \
+ return Dest; \
+ }
static GenericValue executeFCMP_UEQ(GenericValue Src1, GenericValue Src2,
const Type *Ty) {
GenericValue Dest;
if (Ty == Type::FloatTy)
- Dest.Int1Val = (Src1.FloatVal == Src1.FloatVal &&
- Src2.FloatVal == Src2.FloatVal);
+ Dest.IntVal = APInt(1,(Src1.FloatVal == Src1.FloatVal &&
+ Src2.FloatVal == Src2.FloatVal));
else
- Dest.Int1Val = (Src1.DoubleVal == Src1.DoubleVal &&
- Src2.DoubleVal == Src2.DoubleVal);
+ Dest.IntVal = APInt(1,(Src1.DoubleVal == Src1.DoubleVal &&
+ Src2.DoubleVal == Src2.DoubleVal));
return Dest;
}
const Type *Ty) {
GenericValue Dest;
if (Ty == Type::FloatTy)
- Dest.Int1Val = (Src1.FloatVal != Src1.FloatVal ||
- Src2.FloatVal != Src2.FloatVal);
+ Dest.IntVal = APInt(1,(Src1.FloatVal != Src1.FloatVal ||
+ Src2.FloatVal != Src2.FloatVal));
else
- Dest.Int1Val = (Src1.DoubleVal != Src1.DoubleVal ||
- Src2.DoubleVal != Src2.DoubleVal);
+ Dest.IntVal = APInt(1,(Src1.DoubleVal != Src1.DoubleVal ||
+ Src2.DoubleVal != Src2.DoubleVal));
return Dest;
}
GenericValue R; // Result
switch (I.getPredicate()) {
- case FCmpInst::FCMP_FALSE: R.Int1Val = false; break;
- case FCmpInst::FCMP_TRUE: R.Int1Val = true; break;
+ case FCmpInst::FCMP_FALSE: R.IntVal = APInt(1,false); break;
+ case FCmpInst::FCMP_TRUE: R.IntVal = APInt(1,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_OGE: R = executeFCMP_OGE(Src1, Src2, Ty); break;
default:
cerr << "Don't know how to handle this FCmp predicate!\n-->" << I;
- abort();
+ llvm_unreachable();
}
SetValue(&I, R, SF);
case FCmpInst::FCMP_UGE: return executeFCMP_UGE(Src1, Src2, Ty);
case FCmpInst::FCMP_FALSE: {
GenericValue Result;
- Result.Int1Val = false;
+ Result.IntVal = APInt(1, false);
return Result;
}
case FCmpInst::FCMP_TRUE: {
GenericValue Result;
- Result.Int1Val = true;
+ Result.IntVal = APInt(1, true);
return Result;
}
default:
cerr << "Unhandled Cmp predicate\n";
- abort();
+ llvm_unreachable();
}
}
GenericValue Src1 = getOperandValue(I.getOperand(0), SF);
GenericValue Src2 = getOperandValue(I.getOperand(1), SF);
GenericValue R; // Result
- initializeAPInt(R, Ty, SF);
switch (I.getOpcode()) {
- case Instruction::Add: executeAddInst (R, Src1, Src2, Ty); break;
- case Instruction::Sub: executeSubInst (R, Src1, Src2, Ty); break;
- case Instruction::Mul: executeMulInst (R, Src1, Src2, Ty); break;
- case Instruction::UDiv: executeUDivInst (R, Src1, Src2, Ty); break;
- case Instruction::SDiv: executeSDivInst (R, Src1, Src2, Ty); break;
- case Instruction::FDiv: executeFDivInst (R, Src1, Src2, Ty); break;
- case Instruction::URem: executeURemInst (R, Src1, Src2, Ty); break;
- case Instruction::SRem: executeSRemInst (R, Src1, Src2, Ty); break;
- case Instruction::FRem: executeFRemInst (R, Src1, Src2, Ty); break;
- case Instruction::And: executeAndInst (R, Src1, Src2, Ty); break;
- case Instruction::Or: executeOrInst (R, Src1, Src2, Ty); break;
- case Instruction::Xor: executeXorInst (R, Src1, Src2, Ty); break;
+ case Instruction::Add: R.IntVal = Src1.IntVal + Src2.IntVal; break;
+ case Instruction::Sub: R.IntVal = Src1.IntVal - Src2.IntVal; break;
+ case Instruction::Mul: R.IntVal = Src1.IntVal * Src2.IntVal; break;
+ case Instruction::FAdd: executeFAddInst(R, Src1, Src2, Ty); break;
+ case Instruction::FSub: executeFSubInst(R, Src1, Src2, Ty); break;
+ case Instruction::FMul: executeFMulInst(R, Src1, Src2, Ty); break;
+ case Instruction::FDiv: executeFDivInst(R, Src1, Src2, Ty); break;
+ case Instruction::FRem: executeFRemInst(R, Src1, Src2, Ty); break;
+ case Instruction::UDiv: R.IntVal = Src1.IntVal.udiv(Src2.IntVal); break;
+ case Instruction::SDiv: R.IntVal = Src1.IntVal.sdiv(Src2.IntVal); break;
+ case Instruction::URem: R.IntVal = Src1.IntVal.urem(Src2.IntVal); break;
+ 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;
default:
cerr << "Don't know how to handle this binary operator!\n-->" << I;
- abort();
+ llvm_unreachable();
}
SetValue(&I, R, SF);
static GenericValue executeSelectInst(GenericValue Src1, GenericValue Src2,
GenericValue Src3) {
- return Src1.Int1Val ? Src2 : Src3;
+ return Src1.IntVal == 0 ? Src3 : Src2;
}
void Interpreter::visitSelectInst(SelectInst &I) {
GenericValue Src1 = getOperandValue(I.getOperand(0), SF);
GenericValue Src2 = getOperandValue(I.getOperand(1), SF);
GenericValue Src3 = getOperandValue(I.getOperand(2), SF);
- GenericValue R;
- initializeAPInt(R, I.getOperand(1)->getType(), SF);
- R = executeSelectInst(Src1, Src2, Src3);
+ GenericValue R = executeSelectInst(Src1, Src2, Src3);
SetValue(&I, R, SF);
}
// the stack before interpreting atexit handlers.
ECStack.clear ();
runAtExitHandlers ();
- exit (GV.Int32Val);
+ exit (GV.IntVal.zextOrTrunc(32).getZExtValue());
}
/// Pop the last stack frame off of ECStack and then copy the result
if (RetTy && RetTy->isInteger()) { // Nonvoid return type?
ExitValue = Result; // Capture the exit value of the program
} else {
- memset(&ExitValue, 0, sizeof(ExitValue));
+ memset(&ExitValue.Untyped, 0, sizeof(ExitValue.Untyped));
}
} else {
// If we have a previous stack frame, and we have a previous call,
do {
ECStack.pop_back ();
if (ECStack.empty ())
- abort ();
+ llvm_report_error("Empty stack during unwind!");
Inst = ECStack.back ().Caller.getInstruction ();
} while (!(Inst && isa<InvokeInst> (Inst)));
}
void Interpreter::visitUnreachableInst(UnreachableInst &I) {
- cerr << "ERROR: Program executed an 'unreachable' instruction!\n";
- abort();
+ llvm_report_error("ERROR: Program executed an 'unreachable' instruction!");
}
void Interpreter::visitBranchInst(BranchInst &I) {
Dest = I.getSuccessor(0); // Uncond branches have a fixed dest...
if (!I.isUnconditional()) {
Value *Cond = I.getCondition();
- if (getOperandValue(Cond, SF).Int1Val == 0) // If false cond...
+ if (getOperandValue(Cond, SF).IntVal == 0) // If false cond...
Dest = I.getSuccessor(1);
}
SwitchToNewBasicBlock(Dest, SF);
// Check to see if any of the cases match...
BasicBlock *Dest = 0;
for (unsigned i = 2, e = I.getNumOperands(); i != e; i += 2)
- if (executeICMP_EQ(CondVal,
- getOperandValue(I.getOperand(i), SF), ElTy).Int1Val) {
+ if (executeICMP_EQ(CondVal, getOperandValue(I.getOperand(i), SF), ElTy)
+ .IntVal != 0) {
Dest = cast<BasicBlock>(I.getOperand(i+1));
break;
}
const 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).Int32Val;
+ 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(NumElements * (size_t)TD.getTypeSize(Ty));
+ void *Memory = malloc(MemToAlloc);
+
+ DOUT << "Allocated Type: " << *Ty << " (" << TypeSize << " bytes) x "
+ << NumElements << " (Total: " << MemToAlloc << ") at "
+ << uintptr_t(Memory) << '\n';
GenericValue Result = PTOGV(Memory);
assert(Result.PointerVal != 0 && "Null pointer returned by malloc!");
assert(isa<PointerType>(Ptr->getType()) &&
"Cannot getElementOffset of a nonpointer type!");
- PointerTy Total = 0;
+ uint64_t Total = 0;
for (; I != E; ++I) {
if (const StructType *STy = dyn_cast<StructType>(*I)) {
const ConstantInt *CPU = cast<ConstantInt>(I.getOperand());
unsigned Index = unsigned(CPU->getZExtValue());
- Total += (PointerTy)SLO->getElementOffset(Index);
+ Total += SLO->getElementOffset(Index);
} else {
const SequentialType *ST = cast<SequentialType>(*I);
// Get the index number for the array... which must be long type...
unsigned BitWidth =
cast<IntegerType>(I.getOperand()->getType())->getBitWidth();
if (BitWidth == 32)
- Idx = (int64_t)(int32_t)IdxGV.Int32Val;
- else if (BitWidth == 64)
- Idx = (int64_t)IdxGV.Int64Val;
- else
- assert(0 && "Invalid index type for getelementptr");
- Total += PointerTy(TD.getTypeSize(ST->getElementType())*Idx);
+ 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;
}
}
GenericValue Result;
- Result.PointerVal = getOperandValue(Ptr, SF).PointerVal + Total;
+ Result.PointerVal = ((char*)getOperandValue(Ptr, SF).PointerVal) + Total;
+ DOUT << "GEP Index " << Total << " bytes.\n";
return Result;
}
void Interpreter::visitGetElementPtrInst(GetElementPtrInst &I) {
ExecutionContext &SF = ECStack.back();
- SetValue(&I, TheEE->executeGEPOperation(I.getPointerOperand(),
+ SetValue(&I, executeGEPOperation(I.getPointerOperand(),
gep_type_begin(I), gep_type_end(I), SF), SF);
}
GenericValue SRC = getOperandValue(I.getPointerOperand(), SF);
GenericValue *Ptr = (GenericValue*)GVTOP(SRC);
GenericValue Result;
- initializeAPInt(Result, I.getType(), SF);
LoadValueFromMemory(Result, Ptr, I.getType());
SetValue(&I, Result, SF);
+ if (I.isVolatile() && PrintVolatile)
+ cerr << "Volatile load " << I;
}
void Interpreter::visitStoreInst(StoreInst &I) {
GenericValue SRC = getOperandValue(I.getPointerOperand(), SF);
StoreValueToMemory(Val, (GenericValue *)GVTOP(SRC),
I.getOperand(0)->getType());
+ if (I.isVolatile() && PrintVolatile)
+ cerr << "Volatile store: " << I;
}
//===----------------------------------------------------------------------===//
ExecutionContext &SF = ECStack.back();
// Check to see if this is an intrinsic function call...
- if (Function *F = CS.getCalledFunction())
- if (F->isDeclaration ())
+ Function *F = CS.getCalledFunction();
+ if (F && F->isDeclaration ())
switch (F->getIntrinsicID()) {
case Intrinsic::not_intrinsic:
break;
// If it is an unknown intrinsic function, use the intrinsic lowering
// class to transform it into hopefully tasty LLVM code.
//
- Instruction *Prev = CS.getInstruction()->getPrev();
+ BasicBlock::iterator me(CS.getInstruction());
BasicBlock *Parent = CS.getInstruction()->getParent();
+ bool atBegin(Parent->begin() == me);
+ if (!atBegin)
+ --me;
IL->LowerIntrinsicCall(cast<CallInst>(CS.getInstruction()));
// Restore the CurInst pointer to the first instruction newly inserted, if
// any.
- if (!Prev) {
+ if (atBegin) {
SF.CurInst = Parent->begin();
} else {
- SF.CurInst = Prev;
+ SF.CurInst = me;
++SF.CurInst;
}
return;
}
+
SF.Caller = CS;
std::vector<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) {
+ e = SF.Caller.arg_end(); i != e; ++i, ++pNum) {
Value *V = *i;
ArgVals.push_back(getOperandValue(V, SF));
- // Promote all integral types whose size is < sizeof(int) into ints. We do
- // this by zero or sign extending the value as appropriate according to the
- // source type.
+ // Promote all integral types whose size is < sizeof(i32) into i32.
+ // We do this by zero or sign extending the value as appropriate
+ // according to the parameter attributes
const Type *Ty = V->getType();
- if (Ty->isInteger()) {
- if (Ty->getPrimitiveSizeInBits() == 1)
- ArgVals.back().Int32Val = ArgVals.back().Int1Val;
- else if (Ty->getPrimitiveSizeInBits() <= 8)
- ArgVals.back().Int32Val = ArgVals.back().Int8Val;
- else if (Ty->getPrimitiveSizeInBits() <= 16)
- ArgVals.back().Int32Val = ArgVals.back().Int16Val;
+ if (Ty->isInteger() && (ArgVals.back().IntVal.getBitWidth() < 32)) {
+ if (CS.paramHasAttr(pNum, Attribute::ZExt))
+ ArgVals.back().IntVal = ArgVals.back().IntVal.zext(32);
+ else if (CS.paramHasAttr(pNum, Attribute::SExt))
+ ArgVals.back().IntVal = ArgVals.back().IntVal.sext(32);
}
}
callFunction((Function*)GVTOP(SRC), ArgVals);
}
-static void executeShlInst(GenericValue &Dest, GenericValue Src1,
- GenericValue Src2, const Type *Ty) {
- if (const IntegerType *ITy = cast<IntegerType>(Ty)) {
- unsigned BitWidth = ITy->getBitWidth();
- if (BitWidth <= 8) {
- Dest.Int8Val = ((uint8_t)Src1.Int8Val) << ((uint32_t)Src2.Int8Val);
- maskToBitWidth(Dest, BitWidth);
- } else if (BitWidth <= 16) {
- Dest.Int16Val = ((uint16_t)Src1.Int16Val) << ((uint32_t)Src2.Int16Val);
- maskToBitWidth(Dest, BitWidth);
- } else if (BitWidth <= 32) {
- Dest.Int32Val = ((uint32_t)Src1.Int32Val) << ((uint32_t)Src2.Int32Val);
- maskToBitWidth(Dest, BitWidth);
- } else if (BitWidth <= 64) {
- Dest.Int64Val = ((uint64_t)Src1.Int64Val) << ((uint32_t)Src2.Int64Val);
- maskToBitWidth(Dest, BitWidth);
- } else {
- *(Dest.APIntVal) = Src1.APIntVal->shl(Src2.APIntVal->getZExtValue());
- }
- } else {
- cerr << "Unhandled type for Shl instruction: " << *Ty << "\n";
- abort();
- }
-}
-
-static void executeLShrInst(GenericValue &Dest, GenericValue Src1,
- GenericValue Src2, const Type *Ty) {
- if (const IntegerType *ITy = cast<IntegerType>(Ty)) {
- unsigned BitWidth = ITy->getBitWidth();
- if (BitWidth <= 8) {
- Dest.Int8Val = ((uint8_t)Src1.Int8Val) >> ((uint32_t)Src2.Int8Val);
- maskToBitWidth(Dest, BitWidth);
- } else if (BitWidth <= 16) {
- Dest.Int16Val = ((uint16_t)Src1.Int16Val) >> ((uint32_t)Src2.Int16Val);
- maskToBitWidth(Dest, BitWidth);
- } else if (BitWidth <= 32) {
- Dest.Int32Val = ((uint32_t)Src1.Int32Val) >> ((uint32_t)Src2.Int32Val);
- maskToBitWidth(Dest, BitWidth);
- } else if (BitWidth <= 64) {
- Dest.Int64Val = ((uint64_t)Src1.Int64Val) >> ((uint32_t)Src2.Int64Val);
- maskToBitWidth(Dest, BitWidth);
- } else {
- *(Dest.APIntVal) = Src1.APIntVal->lshr(Src2.APIntVal->getZExtValue());
- }
- } else {
- cerr << "Unhandled type for LShr instruction: " << *Ty << "\n";
- abort();
- }
-}
-
-static void executeAShrInst(GenericValue &Dest, GenericValue Src1,
- GenericValue Src2, const Type *Ty) {
- if (const IntegerType *ITy = cast<IntegerType>(Ty)) {
- unsigned BitWidth = ITy->getBitWidth();
- if (BitWidth <= 8) {
- Dest.Int8Val = ((int8_t)Src1.Int8Val) >> ((int32_t)Src2.Int8Val);
- maskToBitWidth(Dest, BitWidth);
- } else if (BitWidth <= 16) {
- Dest.Int16Val = ((int16_t)Src1.Int16Val) >> ((int32_t)Src2.Int8Val);
- maskToBitWidth(Dest, BitWidth);
- } else if (BitWidth <= 32) {
- Dest.Int32Val = ((int32_t)Src1.Int32Val) >> ((int32_t)Src2.Int8Val);
- maskToBitWidth(Dest, BitWidth);
- } else if (BitWidth <= 64) {
- Dest.Int64Val = ((int64_t)Src1.Int64Val) >> ((int32_t)Src2.Int8Val);
- maskToBitWidth(Dest, BitWidth);
- } else {
- *(Dest.APIntVal) = Src1.APIntVal->ashr(Src2.APIntVal->getZExtValue());
- }
- } else {
- cerr << "Unhandled type for AShr instruction: " << *Ty << "\n";
- abort();
- }
-}
-
void Interpreter::visitShl(BinaryOperator &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 Dest;
- initializeAPInt(Dest, Ty, SF);
- executeShlInst (Dest, Src1, Src2, Ty);
+ if (Src2.IntVal.getZExtValue() < Src1.IntVal.getBitWidth())
+ Dest.IntVal = Src1.IntVal.shl(Src2.IntVal.getZExtValue());
+ else
+ Dest.IntVal = Src1.IntVal;
+
SetValue(&I, Dest, SF);
}
void Interpreter::visitLShr(BinaryOperator &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 Dest;
- initializeAPInt(Dest, Ty, SF);
- executeLShrInst (Dest, Src1, Src2, Ty);
+ if (Src2.IntVal.getZExtValue() < Src1.IntVal.getBitWidth())
+ Dest.IntVal = Src1.IntVal.lshr(Src2.IntVal.getZExtValue());
+ else
+ Dest.IntVal = Src1.IntVal;
+
SetValue(&I, Dest, SF);
}
void Interpreter::visitAShr(BinaryOperator &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 Dest;
- initializeAPInt(Dest, Ty, SF);
- executeAShrInst (Dest, Src1, Src2, Ty);
+ if (Src2.IntVal.getZExtValue() < Src1.IntVal.getBitWidth())
+ Dest.IntVal = Src1.IntVal.ashr(Src2.IntVal.getZExtValue());
+ else
+ Dest.IntVal = Src1.IntVal;
+
SetValue(&I, Dest, SF);
}
-#define INTEGER_ASSIGN(DEST, BITWIDTH, VAL) \
- { \
- uint64_t Mask = ~(uint64_t)(0ull) >> (64-BITWIDTH); \
- if (BITWIDTH == 1) { \
- Dest.Int1Val = (bool) (VAL & Mask); \
- } else if (BITWIDTH <= 8) { \
- Dest.Int8Val = (uint8_t) (VAL & Mask); \
- } else if (BITWIDTH <= 16) { \
- Dest.Int16Val = (uint16_t) (VAL & Mask); \
- } else if (BITWIDTH <= 32) { \
- Dest.Int32Val = (uint32_t) (VAL & Mask); \
- } else \
- Dest.Int64Val = (uint64_t) (VAL & Mask); \
- }
-
GenericValue Interpreter::executeTruncInst(Value *SrcVal, const Type *DstTy,
ExecutionContext &SF) {
- const Type *SrcTy = SrcVal->getType();
GenericValue Dest, Src = getOperandValue(SrcVal, SF);
const IntegerType *DITy = cast<IntegerType>(DstTy);
- const IntegerType *SITy = cast<IntegerType>(SrcTy);
unsigned DBitWidth = DITy->getBitWidth();
- unsigned SBitWidth = SITy->getBitWidth();
- assert(SBitWidth > DBitWidth && "Invalid truncate");
-
- if (DBitWidth > 64) {
- // Both values are APInt, just use the APInt trunc
- initializeAPInt(Dest, DstTy, SF);
- *(Dest.APIntVal) = Src.APIntVal->trunc(DBitWidth);
- return Dest;
- }
-
- uint64_t MaskedVal = 0;
- uint64_t Mask = (1ULL << DBitWidth) - 1;
-
- // Mask the source value to its actual bit width. This ensures that any
- // high order bits are cleared.
- if (SBitWidth <= 8)
- MaskedVal = Src.Int8Val & Mask;
- else if (SBitWidth <= 16)
- MaskedVal = Src.Int16Val & Mask;
- else if (SBitWidth <= 32)
- MaskedVal = Src.Int32Val & Mask;
- else if (SBitWidth <= 64)
- MaskedVal = Src.Int64Val & Mask;
- else
- MaskedVal = Src.APIntVal->trunc(DBitWidth).getZExtValue();
-
- INTEGER_ASSIGN(Dest, DBitWidth, MaskedVal);
+ Dest.IntVal = Src.IntVal.trunc(DBitWidth);
return Dest;
}
GenericValue Interpreter::executeSExtInst(Value *SrcVal, const Type *DstTy,
ExecutionContext &SF) {
- const Type *SrcTy = SrcVal->getType();
GenericValue Dest, Src = getOperandValue(SrcVal, SF);
const IntegerType *DITy = cast<IntegerType>(DstTy);
- const IntegerType *SITy = cast<IntegerType>(SrcTy);
unsigned DBitWidth = DITy->getBitWidth();
- unsigned SBitWidth = SITy->getBitWidth();
- assert(SBitWidth < DBitWidth && "Invalid sign extend");
-
- if (SBitWidth > 64) {
- // Both values are APInt, just use the APInt::sext method;
- initializeAPInt(Dest, DstTy, SF);
- *(Dest.APIntVal) = Src.APIntVal->sext(DBitWidth);
- return Dest;
- }
-
- // Normalize to a 64-bit value.
- uint64_t Normalized = 0;
- if (SBitWidth <= 8)
- Normalized = Src.Int8Val;
- else if (SBitWidth <= 16)
- Normalized = Src.Int16Val;
- else if (SBitWidth <= 32)
- Normalized = Src.Int32Val;
- else
- Normalized = Src.Int64Val;
-
- if (DBitWidth > 64) {
- // Destination is an APint, construct it and return
- initializeAPInt(Dest, DstTy, SF);
- *(Dest.APIntVal) = APInt(SBitWidth, Normalized).sext(DBitWidth);
- return Dest;
- }
-
- Normalized = doSignExtension(Normalized, SITy);
-
- // Now that we have a sign extended value, assign it to the destination
- INTEGER_ASSIGN(Dest, DBitWidth, Normalized);
+ Dest.IntVal = Src.IntVal.sext(DBitWidth);
return Dest;
}
GenericValue Interpreter::executeZExtInst(Value *SrcVal, const Type *DstTy,
ExecutionContext &SF) {
- const Type *SrcTy = SrcVal->getType();
GenericValue Dest, Src = getOperandValue(SrcVal, SF);
const IntegerType *DITy = cast<IntegerType>(DstTy);
- const IntegerType *SITy = cast<IntegerType>(SrcTy);
unsigned DBitWidth = DITy->getBitWidth();
- unsigned SBitWidth = SITy->getBitWidth();
- assert(SBitWidth < DBitWidth && "Invalid sign extend");
-
- if (SBitWidth > 64) {
- // Both values are APInt, just use the APInt::sext method;
- initializeAPInt(Dest, DstTy, SF);
- *(Dest.APIntVal) = Src.APIntVal->zext(DBitWidth);
- return Dest;
- }
-
- uint64_t Extended = 0;
- if (SBitWidth == 1)
- // For sign extension from bool, we must extend the source bits.
- Extended = (uint64_t) (Src.Int1Val & 1);
- else if (SBitWidth <= 8)
- Extended = (uint64_t) (uint8_t)Src.Int8Val;
- else if (SBitWidth <= 16)
- Extended = (uint64_t) (uint16_t)Src.Int16Val;
- else if (SBitWidth <= 32)
- Extended = (uint64_t) (uint32_t)Src.Int32Val;
- else
- Extended = (uint64_t) Src.Int64Val;
-
- if (DBitWidth > 64) {
- // Destination is an APint, construct it and return
- initializeAPInt(Dest, DstTy, SF);
- *(Dest.APIntVal) = APInt(SBitWidth, Extended).zext(DBitWidth);
- return Dest;
- }
-
- // Now that we have a sign extended value, assign it to the destination
- INTEGER_ASSIGN(Dest, DBitWidth, Extended);
+ Dest.IntVal = Src.IntVal.zext(DBitWidth);
return Dest;
}
GenericValue Interpreter::executeFPTruncInst(Value *SrcVal, const Type *DstTy,
ExecutionContext &SF) {
- const Type *SrcTy = SrcVal->getType();
GenericValue Dest, Src = getOperandValue(SrcVal, SF);
- assert(SrcTy == Type::DoubleTy && DstTy == Type::FloatTy &&
+ assert(SrcVal->getType() == Type::DoubleTy && DstTy == Type::FloatTy &&
"Invalid FPTrunc instruction");
Dest.FloatVal = (float) Src.DoubleVal;
return Dest;
GenericValue Interpreter::executeFPExtInst(Value *SrcVal, const Type *DstTy,
ExecutionContext &SF) {
- const Type *SrcTy = SrcVal->getType();
GenericValue Dest, Src = getOperandValue(SrcVal, SF);
- assert(SrcTy == Type::FloatTy && DstTy == Type::DoubleTy &&
+ assert(SrcVal->getType() == Type::FloatTy && DstTy == Type::DoubleTy &&
"Invalid FPTrunc instruction");
Dest.DoubleVal = (double) Src.FloatVal;
return Dest;
GenericValue Interpreter::executeFPToUIInst(Value *SrcVal, const Type *DstTy,
ExecutionContext &SF) {
const Type *SrcTy = SrcVal->getType();
+ uint32_t DBitWidth = cast<IntegerType>(DstTy)->getBitWidth();
GenericValue Dest, Src = getOperandValue(SrcVal, SF);
- const IntegerType *DITy = cast<IntegerType>(DstTy);
- unsigned DBitWidth = DITy->getBitWidth();
assert(SrcTy->isFloatingPoint() && "Invalid FPToUI instruction");
- if (DBitWidth > 64) {
- initializeAPInt(Dest, DITy, SF);
- if (SrcTy->getTypeID() == Type::FloatTyID)
- *(Dest.APIntVal) = APIntOps::RoundFloatToAPInt(Src.FloatVal, DBitWidth);
- else
- *(Dest.APIntVal) = APIntOps::RoundDoubleToAPInt(Src.DoubleVal, DBitWidth);
- return Dest;
- }
-
- uint64_t Converted = 0;
if (SrcTy->getTypeID() == Type::FloatTyID)
- Converted = (uint64_t) Src.FloatVal;
+ Dest.IntVal = APIntOps::RoundFloatToAPInt(Src.FloatVal, DBitWidth);
else
- Converted = (uint64_t) Src.DoubleVal;
-
- INTEGER_ASSIGN(Dest, DBitWidth, Converted);
+ Dest.IntVal = APIntOps::RoundDoubleToAPInt(Src.DoubleVal, DBitWidth);
return Dest;
}
GenericValue Interpreter::executeFPToSIInst(Value *SrcVal, const Type *DstTy,
ExecutionContext &SF) {
const Type *SrcTy = SrcVal->getType();
+ uint32_t DBitWidth = cast<IntegerType>(DstTy)->getBitWidth();
GenericValue Dest, Src = getOperandValue(SrcVal, SF);
- const IntegerType *DITy = cast<IntegerType>(DstTy);
- unsigned DBitWidth = DITy->getBitWidth();
assert(SrcTy->isFloatingPoint() && "Invalid FPToSI instruction");
- if (DBitWidth > 64) {
- initializeAPInt(Dest, DITy, SF);
- if (SrcTy->getTypeID() == Type::FloatTyID)
- *(Dest.APIntVal) = APIntOps::RoundFloatToAPInt(Src.FloatVal, DBitWidth);
- else
- *(Dest.APIntVal) = APIntOps::RoundDoubleToAPInt(Src.DoubleVal, DBitWidth);
- return Dest;
- }
-
- int64_t Converted = 0;
if (SrcTy->getTypeID() == Type::FloatTyID)
- Converted = (int64_t) Src.FloatVal;
+ Dest.IntVal = APIntOps::RoundFloatToAPInt(Src.FloatVal, DBitWidth);
else
- Converted = (int64_t) Src.DoubleVal;
-
- INTEGER_ASSIGN(Dest, DBitWidth, Converted);
+ Dest.IntVal = APIntOps::RoundDoubleToAPInt(Src.DoubleVal, DBitWidth);
return Dest;
}
GenericValue Interpreter::executeUIToFPInst(Value *SrcVal, const Type *DstTy,
ExecutionContext &SF) {
- const Type *SrcTy = SrcVal->getType();
GenericValue Dest, Src = getOperandValue(SrcVal, SF);
- const IntegerType *SITy = cast<IntegerType>(SrcTy);
- unsigned SBitWidth = SITy->getBitWidth();
assert(DstTy->isFloatingPoint() && "Invalid UIToFP instruction");
- if (SBitWidth > 64) {
- if (DstTy->getTypeID() == Type::FloatTyID)
- Dest.FloatVal = APIntOps::RoundAPIntToFloat(*(Src.APIntVal));
- else
- Dest.DoubleVal = APIntOps::RoundAPIntToDouble(*(Src.APIntVal));
- return Dest;
- }
-
- uint64_t Converted = 0;
- if (SBitWidth == 1)
- Converted = (uint64_t) Src.Int1Val;
- else if (SBitWidth <= 8)
- Converted = (uint64_t) Src.Int8Val;
- else if (SBitWidth <= 16)
- Converted = (uint64_t) Src.Int16Val;
- else if (SBitWidth <= 32)
- Converted = (uint64_t) Src.Int32Val;
- else
- Converted = (uint64_t) Src.Int64Val;
-
if (DstTy->getTypeID() == Type::FloatTyID)
- Dest.FloatVal = (float) Converted;
+ Dest.FloatVal = APIntOps::RoundAPIntToFloat(Src.IntVal);
else
- Dest.DoubleVal = (double) Converted;
+ Dest.DoubleVal = APIntOps::RoundAPIntToDouble(Src.IntVal);
return Dest;
}
GenericValue Interpreter::executeSIToFPInst(Value *SrcVal, const Type *DstTy,
ExecutionContext &SF) {
- const Type *SrcTy = SrcVal->getType();
GenericValue Dest, Src = getOperandValue(SrcVal, SF);
- const IntegerType *SITy = cast<IntegerType>(SrcTy);
- unsigned SBitWidth = SITy->getBitWidth();
assert(DstTy->isFloatingPoint() && "Invalid SIToFP instruction");
- if (SBitWidth > 64) {
- if (DstTy->getTypeID() == Type::FloatTyID)
- Dest.FloatVal = APIntOps::RoundSignedAPIntToFloat(*(Src.APIntVal));
- else
- Dest.DoubleVal = APIntOps::RoundSignedAPIntToDouble(*(Src.APIntVal));
- return Dest;
- }
-
- int64_t Converted = 0;
- if (SBitWidth == 1)
- Converted = 0LL - Src.Int1Val;
- else if (SBitWidth <= 8)
- Converted = (int64_t) (int8_t)Src.Int8Val;
- else if (SBitWidth <= 16)
- Converted = (int64_t) (int16_t)Src.Int16Val;
- else if (SBitWidth <= 32)
- Converted = (int64_t) (int32_t)Src.Int32Val;
- else
- Converted = (int64_t) Src.Int64Val;
-
if (DstTy->getTypeID() == Type::FloatTyID)
- Dest.FloatVal = (float) Converted;
+ Dest.FloatVal = APIntOps::RoundSignedAPIntToFloat(Src.IntVal);
else
- Dest.DoubleVal = (double) Converted;
+ Dest.DoubleVal = APIntOps::RoundSignedAPIntToDouble(Src.IntVal);
return Dest;
+
}
GenericValue Interpreter::executePtrToIntInst(Value *SrcVal, const Type *DstTy,
ExecutionContext &SF) {
- const Type *SrcTy = SrcVal->getType();
+ uint32_t DBitWidth = cast<IntegerType>(DstTy)->getBitWidth();
GenericValue Dest, Src = getOperandValue(SrcVal, SF);
- const IntegerType *DITy = cast<IntegerType>(DstTy);
- unsigned DBitWidth = DITy->getBitWidth();
- assert(isa<PointerType>(SrcTy) && "Invalid PtrToInt instruction");
+ assert(isa<PointerType>(SrcVal->getType()) && "Invalid PtrToInt instruction");
- if (DBitWidth > 64) {
- initializeAPInt(Dest, DstTy, SF);
- *(Dest.APIntVal) = (intptr_t) Src.PointerVal;
- }
-
- INTEGER_ASSIGN(Dest, DBitWidth, (intptr_t) Src.PointerVal);
+ Dest.IntVal = APInt(DBitWidth, (intptr_t) Src.PointerVal);
return Dest;
}
GenericValue Interpreter::executeIntToPtrInst(Value *SrcVal, const Type *DstTy,
ExecutionContext &SF) {
- const Type *SrcTy = SrcVal->getType();
GenericValue Dest, Src = getOperandValue(SrcVal, SF);
- const IntegerType *SITy = cast<IntegerType>(SrcTy);
- unsigned SBitWidth = SITy->getBitWidth();
assert(isa<PointerType>(DstTy) && "Invalid PtrToInt instruction");
- uint64_t Converted = 0;
- if (SBitWidth == 1)
- Converted = (uint64_t) Src.Int1Val;
- else if (SBitWidth <= 8)
- Converted = (uint64_t) Src.Int8Val;
- else if (SBitWidth <= 16)
- Converted = (uint64_t) Src.Int16Val;
- else if (SBitWidth <= 32)
- Converted = (uint64_t) Src.Int32Val;
- else if (SBitWidth <= 64)
- Converted = (uint64_t) Src.Int64Val;
- else
- Converted = (uint64_t) Src.APIntVal->trunc(64).getZExtValue();
+ uint32_t PtrSize = TD.getPointerSizeInBits();
+ if (PtrSize != Src.IntVal.getBitWidth())
+ Src.IntVal = Src.IntVal.zextOrTrunc(PtrSize);
- Dest.PointerVal = (PointerTy) Converted;
+ Dest.PointerVal = PointerTy(intptr_t(Src.IntVal.getZExtValue()));
return Dest;
}
assert(isa<PointerType>(SrcTy) && "Invalid BitCast");
Dest.PointerVal = Src.PointerVal;
} else if (DstTy->isInteger()) {
- const IntegerType *DITy = cast<IntegerType>(DstTy);
- unsigned DBitWidth = DITy->getBitWidth();
if (SrcTy == Type::FloatTy) {
- Dest.Int32Val = FloatToBits(Src.FloatVal);
+ Dest.IntVal.zext(sizeof(Src.FloatVal) * CHAR_BIT);
+ Dest.IntVal.floatToBits(Src.FloatVal);
} else if (SrcTy == Type::DoubleTy) {
- Dest.Int64Val = DoubleToBits(Src.DoubleVal);
+ Dest.IntVal.zext(sizeof(Src.DoubleVal) * CHAR_BIT);
+ Dest.IntVal.doubleToBits(Src.DoubleVal);
} else if (SrcTy->isInteger()) {
- const IntegerType *SITy = cast<IntegerType>(SrcTy);
- unsigned SBitWidth = SITy->getBitWidth();
- assert(SBitWidth == DBitWidth && "Invalid BitCast");
- if (SBitWidth == 1) {
- Dest.Int1Val = Src.Int1Val;
- maskToBitWidth(Dest, DBitWidth);
- } else if (SBitWidth <= 8) {
- Dest.Int8Val = Src.Int8Val;
- maskToBitWidth(Dest, DBitWidth);
- } else if (SBitWidth <= 16) {
- Dest.Int16Val = Src.Int16Val;
- maskToBitWidth(Dest, DBitWidth);
- } else if (SBitWidth <= 32) {
- Dest.Int32Val = Src.Int32Val;
- maskToBitWidth(Dest, DBitWidth);
- } else if (SBitWidth <= 64) {
- Dest.Int64Val = Src.Int64Val;
- maskToBitWidth(Dest, DBitWidth);
- } else {
- *(Dest.APIntVal) = *(Src.APIntVal);
- }
+ Dest.IntVal = Src.IntVal;
} else
- assert(0 && "Invalid BitCast");
+ LLVM_UNREACHABLE("Invalid BitCast");
} else if (DstTy == Type::FloatTy) {
if (SrcTy->isInteger())
- Dest.FloatVal = BitsToFloat(Src.Int32Val);
+ Dest.FloatVal = Src.IntVal.bitsToFloat();
else
Dest.FloatVal = Src.FloatVal;
} else if (DstTy == Type::DoubleTy) {
if (SrcTy->isInteger())
- Dest.DoubleVal = BitsToDouble(Src.Int64Val);
+ Dest.DoubleVal = Src.IntVal.bitsToDouble();
else
Dest.DoubleVal = Src.DoubleVal;
} else
- assert(0 && "Invalid Bitcast");
+ LLVM_UNREACHABLE("Invalid Bitcast");
return Dest;
}
GenericValue VAList = getOperandValue(I.getOperand(0), SF);
GenericValue Dest;
GenericValue Src = ECStack[VAList.UIntPairVal.first]
- .VarArgs[VAList.UIntPairVal.second];
+ .VarArgs[VAList.UIntPairVal.second];
const Type *Ty = I.getType();
switch (Ty->getTypeID()) {
- case Type::IntegerTyID: {
- unsigned BitWidth = cast<IntegerType>(Ty)->getBitWidth();
- if (BitWidth == 1) {
- Dest.Int1Val = Src.Int1Val;
- maskToBitWidth(Dest, BitWidth);
- } else if (BitWidth <= 8) {
- Dest.Int8Val = Src.Int8Val;
- maskToBitWidth(Dest, BitWidth);
- } else if (BitWidth <= 16) {
- Dest.Int16Val = Src.Int16Val;
- maskToBitWidth(Dest, BitWidth);
- } else if (BitWidth <= 32) {
- Dest.Int32Val = Src.Int32Val;
- maskToBitWidth(Dest, BitWidth);
- } else if (BitWidth <= 64) {
- Dest.Int64Val = Src.Int64Val;
- maskToBitWidth(Dest, BitWidth);
- } else {
- *(Dest.APIntVal) = *(Src.APIntVal);
- }
- }
+ case Type::IntegerTyID: Dest.IntVal = Src.IntVal;
IMPLEMENT_VAARG(Pointer);
IMPLEMENT_VAARG(Float);
IMPLEMENT_VAARG(Double);
default:
cerr << "Unhandled dest type for vaarg instruction: " << *Ty << "\n";
- abort();
+ llvm_unreachable();
}
// Set the Value of this Instruction.
// 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;
- initializeAPInt(Dest, CE->getType(), SF);
+ const Type * Ty = CE->getOperand(0)->getType();
switch (CE->getOpcode()) {
- case Instruction::Add:
- executeAddInst(Dest, getOperandValue(CE->getOperand(0), SF),
- getOperandValue(CE->getOperand(1), SF),
- CE->getOperand(0)->getType());
- case Instruction::Sub:
- executeSubInst(Dest, getOperandValue(CE->getOperand(0), SF),
- getOperandValue(CE->getOperand(1), SF),
- CE->getOperand(0)->getType());
- case Instruction::Mul:
- executeMulInst(Dest, getOperandValue(CE->getOperand(0), SF),
- getOperandValue(CE->getOperand(1), SF),
- CE->getOperand(0)->getType());
- case Instruction::SDiv:
- executeSDivInst(Dest, getOperandValue(CE->getOperand(0), SF),
- getOperandValue(CE->getOperand(1), SF),
- CE->getOperand(0)->getType());
- case Instruction::UDiv:
- executeUDivInst(Dest, getOperandValue(CE->getOperand(0), SF),
- getOperandValue(CE->getOperand(1), SF),
- CE->getOperand(0)->getType());
- case Instruction::FDiv:
- executeFDivInst(Dest, getOperandValue(CE->getOperand(0), SF),
- getOperandValue(CE->getOperand(1), SF),
- CE->getOperand(0)->getType());
- case Instruction::URem:
- executeURemInst(Dest, getOperandValue(CE->getOperand(0), SF),
- getOperandValue(CE->getOperand(1), SF),
- CE->getOperand(0)->getType());
- case Instruction::SRem:
- executeSRemInst(Dest, getOperandValue(CE->getOperand(0), SF),
- getOperandValue(CE->getOperand(1), SF),
- CE->getOperand(0)->getType());
- case Instruction::FRem:
- executeFRemInst(Dest, getOperandValue(CE->getOperand(0), SF),
- getOperandValue(CE->getOperand(1), SF),
- CE->getOperand(0)->getType());
- case Instruction::And:
- executeAndInst(Dest, getOperandValue(CE->getOperand(0), SF),
- getOperandValue(CE->getOperand(1), SF),
- CE->getOperand(0)->getType());
- case Instruction::Or:
- executeOrInst(Dest, getOperandValue(CE->getOperand(0), SF),
- getOperandValue(CE->getOperand(1), SF),
- CE->getOperand(0)->getType());
- case Instruction::Xor:
- executeXorInst(Dest, getOperandValue(CE->getOperand(0), SF),
- getOperandValue(CE->getOperand(1), SF),
- CE->getOperand(0)->getType());
- case Instruction::Shl:
- executeShlInst(Dest, getOperandValue(CE->getOperand(0), SF),
- getOperandValue(CE->getOperand(1), SF),
- CE->getOperand(0)->getType());
- case Instruction::LShr:
- executeLShrInst(Dest, getOperandValue(CE->getOperand(0), SF),
- getOperandValue(CE->getOperand(1), SF),
- CE->getOperand(0)->getType());
- case Instruction::AShr:
- executeAShrInst(Dest, getOperandValue(CE->getOperand(0), SF),
- getOperandValue(CE->getOperand(1), SF),
- CE->getOperand(0)->getType());
+ 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:
cerr << "Unhandled ConstantExpr: " << *CE << "\n";
- abort();
+ llvm_unreachable();
return GenericValue();
}
return Dest;
// Handle non-varargs arguments...
unsigned i = 0;
- for (Function::arg_iterator AI = F->arg_begin(), E = F->arg_end(); AI != E; ++AI, ++i)
+ for (Function::arg_iterator AI = F->arg_begin(), E = F->arg_end();
+ AI != E; ++AI, ++i)
SetValue(AI, ArgVals[i], StackFrame);
// Handle varargs arguments...
StackFrame.VarArgs.assign(ArgVals.begin()+i, ArgVals.end());
}
+
void Interpreter::run() {
while (!ECStack.empty()) {
// Interpret a single instruction & increment the "PC".
DOUT << "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.
+#ifndef NDEBUG
+ if (!isa<CallInst>(I) && !isa<InvokeInst>(I) &&
+ I.getType() != Type::VoidTy) {
+ DOUT << " --> ";
+ const GenericValue &Val = SF.Values[&I];
+ switch (I.getType()->getTypeID()) {
+ default: LLVM_UNREACHABLE("Invalid GenericValue Type");
+ case Type::VoidTyID: DOUT << "void"; break;
+ case Type::FloatTyID: DOUT << "float " << Val.FloatVal; break;
+ case Type::DoubleTyID: DOUT << "double " << Val.DoubleVal; break;
+ case Type::PointerTyID: DOUT << "void* " << intptr_t(Val.PointerVal);
+ break;
+ case Type::IntegerTyID:
+ DOUT << "i" << Val.IntVal.getBitWidth() << " "
+ << Val.IntVal.toStringUnsigned(10)
+ << " (0x" << Val.IntVal.toStringUnsigned(16) << ")\n";
+ break;
+ }
+ }
+#endif
+#endif
}
}
projects / oota-llvm.git / blobdiff