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@ -99,7 +99,7 @@ static void NORETURN jit_exception_handler(void) |
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void llvm_error_handler(void *user_data, const std::string &reason) |
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{ |
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// Output it to stderr, it might exceed the 1k/4k limit of cli_errmsg
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errs() << reason; |
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errs() << MODULE << reason; |
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jit_exception_handler(); |
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} |
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@ -179,6 +179,7 @@ public: |
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const Type *get(uint16_t ty) |
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{ |
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ty &= 0x7fff; |
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if (ty < 69) |
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return getStatic(ty); |
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ty -= 69; |
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@ -225,9 +226,12 @@ private: |
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return Values[operand]; |
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if (operand < func->numValues) { |
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Value *V = Values[operand]; |
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if (V->getType() == Ty) |
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if (func->types[operand]&0x8000 && V->getType() == Ty) { |
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return V; |
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} |
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V = Builder.CreateLoad(V); |
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assert(V->getType() == Ty); |
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return V; |
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return Builder.CreateLoad(V); |
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} |
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unsigned w = (Ty->getPrimitiveSizeInBits()+7)/8; |
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return convertOperand(func, map[w], operand); |
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@ -243,8 +247,11 @@ private: |
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unsigned w, operand_t operand) { |
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if (operand < func->numArgs) |
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return Values[operand]; |
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if (operand < func->numValues) |
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if (operand < func->numValues) { |
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if (func->types[operand]&0x8000) |
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return Values[operand]; |
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return Builder.CreateLoad(Values[operand]); |
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} |
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if (operand & 0x80000000) { |
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operand &= 0x7fffffff; |
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@ -309,7 +316,7 @@ private: |
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const Type* mapType(uint16_t typeID) |
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{ |
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return TypeMap->get(typeID); |
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return TypeMap->get(typeID&0x7fffffff); |
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} |
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Constant *buildConstant(const Type *Ty, uint64_t *components, unsigned &c) |
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@ -364,6 +371,31 @@ public: |
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} |
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} |
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template <typename InputIterator> |
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bool createGEP(unsigned dest, Value *Base, InputIterator Start, InputIterator End) { |
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assert(dest >= numArgs && dest < numLocals+numArgs && "Instruction destination out of range"); |
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const Type *Ty = GetElementPtrInst::getIndexedType(Base->getType(), Start, End); |
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const Type *ETy = cast<PointerType>(cast<PointerType>(Values[dest]->getType())->getElementType())->getElementType(); |
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if (!Ty || (Ty != ETy && (!isa<IntegerType>(Ty) || !isa<IntegerType>(ETy)))) { |
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errs() << MODULE << "Wrong indices for GEP opcode: " |
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<< " expected type: " << *ETy; |
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if (Ty) |
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errs() << " actual type: " << *Ty; |
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errs() << " base: " << *Base << " indices: "; |
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for (InputIterator I=Start; I != End; I++) { |
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errs() << **I << ", "; |
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} |
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errs() << "\n"; |
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return false; |
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} |
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Value *V = Builder.CreateGEP(Base, Start, End); |
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if (Ty != ETy) { |
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V = Builder.CreateBitCast(V, PointerType::getUnqual(ETy)); |
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} |
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Store(dest, V); |
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return true; |
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} |
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bool generate() { |
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TypeMap = new LLVMTypeMapper(Context, bc->types + 4, bc->num_types - 5); |
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@ -383,6 +415,55 @@ public: |
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FHandler->addFnAttr(Attribute::NoInline); |
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EE->addGlobalMapping(FHandler, (void*)jit_exception_handler); |
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std::vector<const Type*> args; |
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args.push_back(PointerType::getUnqual(Type::getInt8Ty(Context))); |
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args.push_back(Type::getInt8Ty(Context)); |
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args.push_back(Type::getInt32Ty(Context)); |
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args.push_back(Type::getInt32Ty(Context)); |
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FunctionType* FuncTy_3 = FunctionType::get(Type::getVoidTy(Context), |
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args, false); |
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Function *FMemset = Function::Create(FuncTy_3, GlobalValue::ExternalLinkage, |
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"llvm.memset.i32", M); |
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FMemset->setDoesNotThrow(); |
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FMemset->setDoesNotCapture(1, true); |
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args.clear(); |
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args.push_back(PointerType::getUnqual(Type::getInt8Ty(Context))); |
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args.push_back(PointerType::getUnqual(Type::getInt8Ty(Context))); |
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args.push_back(Type::getInt32Ty(Context)); |
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args.push_back(Type::getInt32Ty(Context)); |
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FunctionType* FuncTy_4 = FunctionType::get(Type::getVoidTy(Context), |
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args, false); |
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Function *FMemmove = Function::Create(FuncTy_4, GlobalValue::ExternalLinkage, |
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"llvm.memmove.i32", M); |
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FMemmove->setDoesNotThrow(); |
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FMemmove->setDoesNotCapture(1, true); |
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Function *FMemcpy = Function::Create(FuncTy_4, GlobalValue::ExternalLinkage, |
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"llvm.memcpy.i32", M); |
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FMemcpy->setDoesNotThrow(); |
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FMemcpy->setDoesNotCapture(1, true); |
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FunctionType* DummyTy = FunctionType::get(Type::getVoidTy(Context), false); |
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Function *FRealMemset = Function::Create(DummyTy, GlobalValue::ExternalLinkage, |
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"memset", M); |
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EE->addGlobalMapping(FRealMemset, (void*)memset); |
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Function *FRealMemmove = Function::Create(DummyTy, GlobalValue::ExternalLinkage, |
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"memmove", M); |
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EE->addGlobalMapping(FRealMemmove, (void*)memmove); |
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Function *FRealMemcpy = Function::Create(DummyTy, GlobalValue::ExternalLinkage, |
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"memcpy", M); |
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EE->addGlobalMapping(FRealMemcpy, (void*)memcpy); |
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args.clear(); |
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args.push_back(PointerType::getUnqual(Type::getInt8Ty(Context))); |
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args.push_back(PointerType::getUnqual(Type::getInt8Ty(Context))); |
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args.push_back(EE->getTargetData()->getIntPtrType(Context)); |
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FunctionType* FuncTy_5 = FunctionType::get(Type::getInt32Ty(Context), |
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args, false); |
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Function* FRealMemcmp = Function::Create(FuncTy_5, GlobalValue::ExternalLinkage, "memcmp", M); |
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EE->addGlobalMapping(FRealMemcmp, (void*)memcmp); |
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// The hidden ctx param to all functions
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const Type *HiddenCtx = PointerType::getUnqual(Type::getInt8Ty(Context)); |
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@ -399,8 +480,6 @@ public: |
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if (isa<PointerType>(Ty)) { |
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unsigned g = bc->globals[i][1]; |
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if (GVoffsetMap.count(g)) { |
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const Type *MTy = GVtypeMap[g]; |
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assert(Ty == MTy); |
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FakeGVs.set(i); |
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globals.push_back(0); |
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continue; |
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@ -477,16 +556,21 @@ public: |
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offset); |
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Value *GEP = Builder.CreateInBoundsGEP(Ctx, Idx); |
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const Type *Ty = GVtypeMap[g]; |
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Value *Cast = Builder.CreateBitCast(GEP, |
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PointerType::getUnqual(Ty)); |
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Ty = PointerType::getUnqual(PointerType::getUnqual(Ty)); |
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Value *Cast = Builder.CreateBitCast(GEP, Ty); |
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Value *SpecialGV = Builder.CreateLoad(Cast); |
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Constant *C = ConstantInt::get(Type::getInt32Ty(Context), bc->globals[i][0]); |
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globals[i] = Builder.CreateInBoundsGEP(SpecialGV, C); |
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Value *C[] = { |
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ConstantInt::get(Type::getInt32Ty(Context), 0), |
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ConstantInt::get(Type::getInt32Ty(Context), bc->globals[i][0]) |
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}; |
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globals[i] = Builder.CreateInBoundsGEP(SpecialGV, C, |
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C+2); |
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} |
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} |
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// Generate LLVM IR for each BB
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for (unsigned i=0;i<func->numBB;i++) { |
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bool unreachable = false; |
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const struct cli_bc_bb *bb = &func->BB[i]; |
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Builder.SetInsertPoint(BB[i]); |
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for (unsigned j=0;j<bb->numInsts;j++) { |
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@ -507,6 +591,7 @@ public: |
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case OP_BC_GEPN: |
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case OP_BC_STORE: |
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case OP_BC_COPY: |
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case OP_BC_RET: |
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// these instructions represents operands differently
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break; |
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default: |
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@ -624,8 +709,11 @@ public: |
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break; |
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} |
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case OP_BC_RET: |
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{ |
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Op0 = convertOperand(func, F->getReturnType(), inst->u.unaryop); |
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Builder.CreateRet(Op0); |
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break; |
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} |
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case OP_BC_RET_VOID: |
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Builder.CreateRetVoid(); |
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break; |
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@ -698,44 +786,110 @@ public: |
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} |
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case OP_BC_GEP1: |
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{ |
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Value *V = Values[inst->u.binop[0]]; |
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Value *V = convertOperand(func, inst, inst->u.binop[0]); |
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Value *Op = convertOperand(func, I32Ty, inst->u.binop[1]); |
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Store(inst->dest, Builder.CreateGEP(V, Op)); |
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if (!createGEP(inst->dest, V, &Op, &Op+1)) |
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return false; |
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break; |
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} |
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case OP_BC_GEP2: |
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{ |
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std::vector<Value*> Idxs; |
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Value *V = Values[inst->u.three[0]]; |
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Value *V = convertOperand(func, inst, inst->u.three[0]); |
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Idxs.push_back(convertOperand(func, I32Ty, inst->u.three[1])); |
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Idxs.push_back(convertOperand(func, I32Ty, inst->u.three[2])); |
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Store(inst->dest, Builder.CreateGEP(V, Idxs.begin(), Idxs.end())); |
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if (!createGEP(inst->dest, V, Idxs.begin(), Idxs.end())) |
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return false; |
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break; |
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} |
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case OP_BC_GEPN: |
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{ |
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std::vector<Value*> Idxs; |
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assert(inst->u.ops.numOps > 1); |
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Value *V = Values[inst->u.ops.ops[0]]; |
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Value *V = convertOperand(func, inst, inst->u.binop[0]); |
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for (unsigned a=1;a<inst->u.ops.numOps;a++) |
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Idxs.push_back(convertOperand(func, I32Ty, inst->u.ops.ops[a])); |
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Store(inst->dest, Builder.CreateGEP(V, Idxs.begin(), Idxs.end())); |
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if (!createGEP(inst->dest, V, Idxs.begin(), Idxs.end())) |
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return false; |
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break; |
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} |
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case OP_BC_STORE: |
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{ |
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Value *Dest = convertOperand(func, inst, inst->u.binop[1]); |
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const Type *ETy = cast<PointerType>(Dest->getType())->getElementType(); |
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Builder.CreateStore(getOperand(func, ETy, inst->u.binop[0]), |
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Builder.CreateStore(convertOperand(func, ETy, inst->u.binop[0]), |
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Dest); |
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break; |
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} |
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case OP_BC_LOAD: |
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{ |
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Op0 = Builder.CreateBitCast(Op0, |
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Values[inst->dest]->getType()); |
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Op0 = Builder.CreateLoad(Op0); |
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Store(inst->dest, Op0); |
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break; |
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} |
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case OP_BC_MEMSET: |
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{ |
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Value *Dst = convertOperand(func, inst, inst->u.three[0]); |
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Value *Val = convertOperand(func, Type::getInt8Ty(Context), inst->u.three[1]); |
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Value *Len = convertOperand(func, Type::getInt32Ty(Context), inst->u.three[2]); |
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CallInst *c = Builder.CreateCall4(FMemset, Dst, Val, Len, |
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ConstantInt::get(Type::getInt32Ty(Context), 1)); |
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c->setTailCall(true); |
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c->setDoesNotThrow(); |
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break; |
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} |
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case OP_BC_MEMCPY: |
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{ |
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Value *Dst = convertOperand(func, inst, inst->u.three[0]); |
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Value *Src = convertOperand(func, inst, inst->u.three[1]); |
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Value *Len = convertOperand(func, Type::getInt32Ty(Context), inst->u.three[2]); |
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CallInst *c = Builder.CreateCall4(FMemcpy, Dst, Src, Len, |
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ConstantInt::get(Type::getInt32Ty(Context), 1)); |
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c->setTailCall(true); |
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c->setDoesNotThrow(); |
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break; |
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} |
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case OP_BC_MEMMOVE: |
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{ |
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Value *Dst = convertOperand(func, inst, inst->u.three[0]); |
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Value *Src = convertOperand(func, inst, inst->u.three[1]); |
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Value *Len = convertOperand(func, Type::getInt32Ty(Context), inst->u.three[2]); |
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CallInst *c = Builder.CreateCall4(FMemmove, Dst, Src, Len, |
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ConstantInt::get(Type::getInt32Ty(Context), 1)); |
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c->setTailCall(true); |
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c->setDoesNotThrow(); |
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break; |
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} |
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case OP_BC_MEMCMP: |
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{ |
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Value *Dst = convertOperand(func, inst, inst->u.three[0]); |
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Value *Src = convertOperand(func, inst, inst->u.three[1]); |
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Value *Len = convertOperand(func, EE->getTargetData()->getIntPtrType(Context), inst->u.three[2]); |
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CallInst *c = Builder.CreateCall4(FRealMemcmp, Dst, Src, Len, |
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ConstantInt::get(Type::getInt32Ty(Context), 1)); |
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c->setTailCall(true); |
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c->setDoesNotThrow(); |
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Store(inst->dest, c); |
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break; |
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} |
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case OP_BC_ISBIGENDIAN: |
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Store(inst->dest, WORDS_BIGENDIAN ? |
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ConstantInt::getTrue(Context) : |
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ConstantInt::getFalse(Context)); |
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break; |
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case OP_BC_ABORT: |
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if (!unreachable) { |
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CallInst *CI = Builder.CreateCall(FHandler); |
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CI->setDoesNotReturn(); |
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CI->setDoesNotThrow(); |
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Builder.CreateUnreachable(); |
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unreachable = true; |
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} |
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break; |
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default: |
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errs() << "JIT doesn't implement opcode " << |
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errs() << MODULE << "JIT doesn't implement opcode " << |
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inst->opcode << " yet!\n"; |
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return false; |
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} |
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@ -744,6 +898,7 @@ public: |
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if (verifyFunction(*F, PrintMessageAction)) { |
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errs() << MODULE << "Verification failed\n"; |
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F->dump(); |
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// verification failed
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return false; |
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} |
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@ -754,7 +909,7 @@ public: |
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DEBUG(M->dump()); |
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delete TypeMap; |
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std::vector<const Type*> args; |
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args.clear(); |
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args.push_back(PointerType::getUnqual(Type::getInt8Ty(Context))); |
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FunctionType *Callable = FunctionType::get(Type::getInt32Ty(Context), |
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args, false); |
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@ -866,6 +1021,10 @@ int cli_bytecode_prepare_jit(struct cli_all_bc *bcs) |
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OurFPM.add(createPromoteMemoryToRegisterPass()); |
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// Delete dead instructions
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OurFPM.add(createDeadCodeEliminationPass()); |
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// Fold constants
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OurFPM.add(createConstantPropagationPass()); |
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// SimplifyCFG
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OurFPM.add(createCFGSimplificationPass()); |
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OurFPM.doInitialization(); |
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//TODO: create a wrapper that calls pthread_getspecific
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Török Edvin
16 years ago