blob: eaaac7294d2cd2061d72829a57c7d8f284a92b60 [file] [log] [blame]
/*
* Copyright (C) 2012 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "method_compiler.h"
#include "backend_types.h"
#include "compiler.h"
#include "inferred_reg_category_map.h"
#include "ir_builder.h"
#include "logging.h"
#include "object.h"
#include "object_utils.h"
#include "runtime_support_func.h"
#include "stl_util.h"
#include "stringprintf.h"
#include "utils_llvm.h"
#include <iomanip>
#include <llvm/Analysis/Verifier.h>
#include <llvm/BasicBlock.h>
#include <llvm/Function.h>
#include <llvm/GlobalVariable.h>
#include <llvm/Intrinsics.h>
namespace art {
namespace compiler_llvm {
using namespace runtime_support;
MethodCompiler::MethodCompiler(InstructionSet insn_set,
Compiler* compiler,
ClassLinker* class_linker,
ClassLoader const* class_loader,
DexFile const* dex_file,
DexCache* dex_cache,
DexFile::CodeItem const* code_item,
uint32_t method_idx,
uint32_t access_flags)
: insn_set_(insn_set),
compiler_(compiler), compiler_llvm_(compiler->GetCompilerLLVM()),
class_linker_(class_linker), class_loader_(class_loader),
dex_file_(dex_file), dex_cache_(dex_cache), code_item_(code_item),
method_(dex_cache->GetResolvedMethod(method_idx)),
method_helper_(method_), method_idx_(method_idx),
access_flags_(access_flags), module_(compiler_llvm_->GetModule()),
context_(compiler_llvm_->GetLLVMContext()),
irb_(*compiler_llvm_->GetIRBuilder()), func_(NULL), retval_reg_(NULL),
basic_block_reg_alloca_(NULL),
basic_block_reg_zero_init_(NULL), basic_block_reg_arg_init_(NULL),
basic_blocks_(code_item->insns_size_in_code_units_),
basic_block_landing_pads_(code_item->tries_size_, NULL),
basic_block_unwind_(NULL), basic_block_unreachable_(NULL) {
}
MethodCompiler::~MethodCompiler() {
STLDeleteElements(&regs_);
}
void MethodCompiler::CreateFunction() {
// LLVM function name
std::string func_name(LLVMLongName(method_));
// Get function type
llvm::FunctionType* func_type =
GetFunctionType(method_idx_, method_->IsStatic());
// Create function
func_ = llvm::Function::Create(func_type, llvm::Function::ExternalLinkage,
func_name, module_);
// Set argument name
llvm::Function::arg_iterator arg_iter(func_->arg_begin());
llvm::Function::arg_iterator arg_end(func_->arg_end());
DCHECK_NE(arg_iter, arg_end);
arg_iter->setName("method");
++arg_iter;
if (!method_->IsStatic()) {
DCHECK_NE(arg_iter, arg_end);
arg_iter->setName("this");
++arg_iter;
}
for (unsigned i = 0; arg_iter != arg_end; ++i, ++arg_iter) {
arg_iter->setName(StringPrintf("a%u", i));
}
}
llvm::FunctionType* MethodCompiler::GetFunctionType(uint32_t method_idx,
bool is_static) {
// Get method signature
DexFile::MethodId const& method_id = dex_file_->GetMethodId(method_idx);
int32_t shorty_size;
char const* shorty = dex_file_->GetMethodShorty(method_id, &shorty_size);
CHECK_GE(shorty_size, 1);
// Get return type
llvm::Type* ret_type = irb_.getJType(shorty[0], kAccurate);
// Get argument type
std::vector<llvm::Type*> args_type;
args_type.push_back(irb_.getJObjectTy()); // method object pointer
if (!is_static) {
args_type.push_back(irb_.getJType('L', kAccurate)); // "this" object pointer
}
for (int32_t i = 1; i < shorty_size; ++i) {
args_type.push_back(irb_.getJType(shorty[i], kAccurate));
}
return llvm::FunctionType::get(ret_type, args_type, false);
}
void MethodCompiler::EmitPrologue() {
// Create basic blocks for prologue
basic_block_reg_alloca_ =
llvm::BasicBlock::Create(*context_, "prologue.alloca", func_);
basic_block_reg_zero_init_ =
llvm::BasicBlock::Create(*context_, "prologue.zeroinit", func_);
basic_block_reg_arg_init_ =
llvm::BasicBlock::Create(*context_, "prologue.arginit", func_);
// Create register array
for (uint16_t r = 0; r < code_item_->registers_size_; ++r) {
regs_.push_back(DalvikReg::CreateLocalVarReg(*this, r));
}
retval_reg_.reset(DalvikReg::CreateRetValReg(*this));
// Store argument to dalvik register
irb_.SetInsertPoint(basic_block_reg_arg_init_);
EmitPrologueAssignArgRegister();
// Branch to start address
irb_.CreateBr(GetBasicBlock(0));
}
void MethodCompiler::EmitPrologueLastBranch() {
irb_.SetInsertPoint(basic_block_reg_alloca_);
irb_.CreateBr(basic_block_reg_zero_init_);
irb_.SetInsertPoint(basic_block_reg_zero_init_);
irb_.CreateBr(basic_block_reg_arg_init_);
}
void MethodCompiler::EmitPrologueAssignArgRegister() {
uint16_t arg_reg = code_item_->registers_size_ - code_item_->ins_size_;
llvm::Function::arg_iterator arg_iter(func_->arg_begin());
llvm::Function::arg_iterator arg_end(func_->arg_end());
char const* shorty = method_helper_.GetShorty();
int32_t shorty_size = method_helper_.GetShortyLength();
CHECK_LE(1, shorty_size);
++arg_iter; // skip method object
if (!method_->IsStatic()) {
EmitStoreDalvikReg(arg_reg, kObject, kAccurate, arg_iter);
++arg_iter;
++arg_reg;
}
for (int32_t i = 1; i < shorty_size; ++i, ++arg_iter) {
EmitStoreDalvikReg(arg_reg, shorty[i], kAccurate, arg_iter);
++arg_reg;
if (shorty[i] == 'J' || shorty[i] == 'D') {
// Wide types, such as long and double, are using a pair of registers
// to store the value, so we have to increase arg_reg again.
++arg_reg;
}
}
DCHECK_EQ(arg_end, arg_iter);
}
void MethodCompiler::EmitInstructions() {
uint32_t dex_pc = 0;
while (dex_pc < code_item_->insns_size_in_code_units_) {
Instruction const* insn = Instruction::At(code_item_->insns_ + dex_pc);
EmitInstruction(dex_pc, insn);
dex_pc += insn->SizeInCodeUnits();
}
}
void MethodCompiler::EmitInstruction(uint32_t dex_pc,
Instruction const* insn) {
// Set the IRBuilder insertion point
irb_.SetInsertPoint(GetBasicBlock(dex_pc));
#define ARGS dex_pc, insn
// Dispatch the instruction
switch (insn->Opcode()) {
case Instruction::NOP:
EmitInsn_Nop(ARGS);
break;
case Instruction::MOVE:
case Instruction::MOVE_FROM16:
case Instruction::MOVE_16:
EmitInsn_Move(ARGS, kInt);
break;
case Instruction::MOVE_WIDE:
case Instruction::MOVE_WIDE_FROM16:
case Instruction::MOVE_WIDE_16:
EmitInsn_Move(ARGS, kLong);
break;
case Instruction::MOVE_OBJECT:
case Instruction::MOVE_OBJECT_FROM16:
case Instruction::MOVE_OBJECT_16:
EmitInsn_Move(ARGS, kObject);
break;
case Instruction::MOVE_RESULT:
EmitInsn_MoveResult(ARGS, kInt);
break;
case Instruction::MOVE_RESULT_WIDE:
EmitInsn_MoveResult(ARGS, kLong);
break;
case Instruction::MOVE_RESULT_OBJECT:
EmitInsn_MoveResult(ARGS, kObject);
break;
case Instruction::MOVE_EXCEPTION:
EmitInsn_MoveException(ARGS);
break;
case Instruction::RETURN_VOID:
EmitInsn_ReturnVoid(ARGS);
break;
case Instruction::RETURN:
case Instruction::RETURN_WIDE:
case Instruction::RETURN_OBJECT:
EmitInsn_Return(ARGS);
break;
case Instruction::CONST_4:
case Instruction::CONST_16:
case Instruction::CONST:
case Instruction::CONST_HIGH16:
EmitInsn_LoadConstant(ARGS, kInt);
break;
case Instruction::CONST_WIDE_16:
case Instruction::CONST_WIDE_32:
case Instruction::CONST_WIDE:
case Instruction::CONST_WIDE_HIGH16:
EmitInsn_LoadConstant(ARGS, kLong);
break;
case Instruction::CONST_STRING:
case Instruction::CONST_STRING_JUMBO:
EmitInsn_LoadConstantString(ARGS);
break;
case Instruction::CONST_CLASS:
EmitInsn_LoadConstantClass(ARGS);
break;
case Instruction::MONITOR_ENTER:
EmitInsn_MonitorEnter(ARGS);
break;
case Instruction::MONITOR_EXIT:
EmitInsn_MonitorExit(ARGS);
break;
case Instruction::CHECK_CAST:
EmitInsn_CheckCast(ARGS);
break;
case Instruction::INSTANCE_OF:
EmitInsn_InstanceOf(ARGS);
break;
case Instruction::ARRAY_LENGTH:
EmitInsn_ArrayLength(ARGS);
break;
case Instruction::NEW_INSTANCE:
EmitInsn_NewInstance(ARGS);
break;
case Instruction::NEW_ARRAY:
EmitInsn_NewArray(ARGS);
break;
case Instruction::FILLED_NEW_ARRAY:
EmitInsn_FilledNewArray(ARGS, false);
break;
case Instruction::FILLED_NEW_ARRAY_RANGE:
EmitInsn_FilledNewArray(ARGS, true);
break;
case Instruction::FILL_ARRAY_DATA:
EmitInsn_FillArrayData(ARGS);
break;
case Instruction::THROW:
EmitInsn_ThrowException(ARGS);
break;
case Instruction::GOTO:
case Instruction::GOTO_16:
case Instruction::GOTO_32:
EmitInsn_UnconditionalBranch(ARGS);
break;
case Instruction::PACKED_SWITCH:
EmitInsn_PackedSwitch(ARGS);
break;
case Instruction::SPARSE_SWITCH:
EmitInsn_SparseSwitch(ARGS);
break;
case Instruction::CMPL_FLOAT:
EmitInsn_FPCompare(ARGS, kFloat, false);
break;
case Instruction::CMPG_FLOAT:
EmitInsn_FPCompare(ARGS, kFloat, true);
break;
case Instruction::CMPL_DOUBLE:
EmitInsn_FPCompare(ARGS, kDouble, false);
break;
case Instruction::CMPG_DOUBLE:
EmitInsn_FPCompare(ARGS, kDouble, true);
break;
case Instruction::CMP_LONG:
EmitInsn_LongCompare(ARGS);
break;
case Instruction::IF_EQ:
EmitInsn_BinaryConditionalBranch(ARGS, kCondBranch_EQ);
break;
case Instruction::IF_NE:
EmitInsn_BinaryConditionalBranch(ARGS, kCondBranch_NE);
break;
case Instruction::IF_LT:
EmitInsn_BinaryConditionalBranch(ARGS, kCondBranch_LT);
break;
case Instruction::IF_GE:
EmitInsn_BinaryConditionalBranch(ARGS, kCondBranch_GE);
break;
case Instruction::IF_GT:
EmitInsn_BinaryConditionalBranch(ARGS, kCondBranch_GT);
break;
case Instruction::IF_LE:
EmitInsn_BinaryConditionalBranch(ARGS, kCondBranch_LE);
break;
case Instruction::IF_EQZ:
EmitInsn_UnaryConditionalBranch(ARGS, kCondBranch_EQ);
break;
case Instruction::IF_NEZ:
EmitInsn_UnaryConditionalBranch(ARGS, kCondBranch_NE);
break;
case Instruction::IF_LTZ:
EmitInsn_UnaryConditionalBranch(ARGS, kCondBranch_LT);
break;
case Instruction::IF_GEZ:
EmitInsn_UnaryConditionalBranch(ARGS, kCondBranch_GE);
break;
case Instruction::IF_GTZ:
EmitInsn_UnaryConditionalBranch(ARGS, kCondBranch_GT);
break;
case Instruction::IF_LEZ:
EmitInsn_UnaryConditionalBranch(ARGS, kCondBranch_LE);
break;
case Instruction::AGET:
EmitInsn_AGet(ARGS, kInt);
break;
case Instruction::AGET_WIDE:
EmitInsn_AGet(ARGS, kLong);
break;
case Instruction::AGET_OBJECT:
EmitInsn_AGet(ARGS, kObject);
break;
case Instruction::AGET_BOOLEAN:
EmitInsn_AGet(ARGS, kBoolean);
break;
case Instruction::AGET_BYTE:
EmitInsn_AGet(ARGS, kByte);
break;
case Instruction::AGET_CHAR:
EmitInsn_AGet(ARGS, kChar);
break;
case Instruction::AGET_SHORT:
EmitInsn_AGet(ARGS, kShort);
break;
case Instruction::APUT:
EmitInsn_APut(ARGS, kInt);
break;
case Instruction::APUT_WIDE:
EmitInsn_APut(ARGS, kLong);
break;
case Instruction::APUT_OBJECT:
EmitInsn_APut(ARGS, kObject);
break;
case Instruction::APUT_BOOLEAN:
EmitInsn_APut(ARGS, kBoolean);
break;
case Instruction::APUT_BYTE:
EmitInsn_APut(ARGS, kByte);
break;
case Instruction::APUT_CHAR:
EmitInsn_APut(ARGS, kChar);
break;
case Instruction::APUT_SHORT:
EmitInsn_APut(ARGS, kShort);
break;
case Instruction::IGET:
EmitInsn_IGet(ARGS, kInt);
break;
case Instruction::IGET_WIDE:
EmitInsn_IGet(ARGS, kLong);
break;
case Instruction::IGET_OBJECT:
EmitInsn_IGet(ARGS, kObject);
break;
case Instruction::IGET_BOOLEAN:
EmitInsn_IGet(ARGS, kBoolean);
break;
case Instruction::IGET_BYTE:
EmitInsn_IGet(ARGS, kByte);
break;
case Instruction::IGET_CHAR:
EmitInsn_IGet(ARGS, kChar);
break;
case Instruction::IGET_SHORT:
EmitInsn_IGet(ARGS, kShort);
break;
case Instruction::IPUT:
EmitInsn_IPut(ARGS, kInt);
break;
case Instruction::IPUT_WIDE:
EmitInsn_IPut(ARGS, kLong);
break;
case Instruction::IPUT_OBJECT:
EmitInsn_IPut(ARGS, kObject);
break;
case Instruction::IPUT_BOOLEAN:
EmitInsn_IPut(ARGS, kBoolean);
break;
case Instruction::IPUT_BYTE:
EmitInsn_IPut(ARGS, kByte);
break;
case Instruction::IPUT_CHAR:
EmitInsn_IPut(ARGS, kChar);
break;
case Instruction::IPUT_SHORT:
EmitInsn_IPut(ARGS, kShort);
break;
case Instruction::SGET:
EmitInsn_SGet(ARGS, kInt);
break;
case Instruction::SGET_WIDE:
EmitInsn_SGet(ARGS, kLong);
break;
case Instruction::SGET_OBJECT:
EmitInsn_SGet(ARGS, kObject);
break;
case Instruction::SGET_BOOLEAN:
EmitInsn_SGet(ARGS, kBoolean);
break;
case Instruction::SGET_BYTE:
EmitInsn_SGet(ARGS, kByte);
break;
case Instruction::SGET_CHAR:
EmitInsn_SGet(ARGS, kChar);
break;
case Instruction::SGET_SHORT:
EmitInsn_SGet(ARGS, kShort);
break;
case Instruction::SPUT:
EmitInsn_SPut(ARGS, kInt);
break;
case Instruction::SPUT_WIDE:
EmitInsn_SPut(ARGS, kLong);
break;
case Instruction::SPUT_OBJECT:
EmitInsn_SPut(ARGS, kObject);
break;
case Instruction::SPUT_BOOLEAN:
EmitInsn_SPut(ARGS, kBoolean);
break;
case Instruction::SPUT_BYTE:
EmitInsn_SPut(ARGS, kByte);
break;
case Instruction::SPUT_CHAR:
EmitInsn_SPut(ARGS, kChar);
break;
case Instruction::SPUT_SHORT:
EmitInsn_SPut(ARGS, kShort);
break;
case Instruction::INVOKE_VIRTUAL:
EmitInsn_InvokeVirtual(ARGS, false);
break;
case Instruction::INVOKE_SUPER:
EmitInsn_InvokeSuper(ARGS, false);
break;
case Instruction::INVOKE_DIRECT:
EmitInsn_InvokeDirect(ARGS, false);
break;
case Instruction::INVOKE_STATIC:
EmitInsn_InvokeStatic(ARGS, false);
break;
case Instruction::INVOKE_INTERFACE:
EmitInsn_InvokeInterface(ARGS, false);
break;
case Instruction::INVOKE_VIRTUAL_RANGE:
EmitInsn_InvokeVirtual(ARGS, true);
break;
case Instruction::INVOKE_SUPER_RANGE:
EmitInsn_InvokeSuper(ARGS, true);
break;
case Instruction::INVOKE_DIRECT_RANGE:
EmitInsn_InvokeDirect(ARGS, true);
break;
case Instruction::INVOKE_STATIC_RANGE:
EmitInsn_InvokeStatic(ARGS, true);
break;
case Instruction::INVOKE_INTERFACE_RANGE:
EmitInsn_InvokeInterface(ARGS, true);
break;
case Instruction::NEG_INT:
EmitInsn_Neg(ARGS, kInt);
break;
case Instruction::NOT_INT:
EmitInsn_Not(ARGS, kInt);
break;
case Instruction::NEG_LONG:
EmitInsn_Neg(ARGS, kLong);
break;
case Instruction::NOT_LONG:
EmitInsn_Not(ARGS, kLong);
break;
case Instruction::NEG_FLOAT:
EmitInsn_FNeg(ARGS, kFloat);
break;
case Instruction::NEG_DOUBLE:
EmitInsn_FNeg(ARGS, kDouble);
break;
case Instruction::INT_TO_LONG:
EmitInsn_SExt(ARGS);
break;
case Instruction::INT_TO_FLOAT:
EmitInsn_IntToFP(ARGS, kInt, kFloat);
break;
case Instruction::INT_TO_DOUBLE:
EmitInsn_IntToFP(ARGS, kInt, kDouble);
break;
case Instruction::LONG_TO_INT:
EmitInsn_Trunc(ARGS);
break;
case Instruction::LONG_TO_FLOAT:
EmitInsn_IntToFP(ARGS, kLong, kFloat);
break;
case Instruction::LONG_TO_DOUBLE:
EmitInsn_IntToFP(ARGS, kLong, kDouble);
break;
case Instruction::FLOAT_TO_INT:
EmitInsn_FPToInt(ARGS, kFloat, kInt);
break;
case Instruction::FLOAT_TO_LONG:
EmitInsn_FPToInt(ARGS, kFloat, kLong);
break;
case Instruction::FLOAT_TO_DOUBLE:
EmitInsn_FExt(ARGS);
break;
case Instruction::DOUBLE_TO_INT:
EmitInsn_FPToInt(ARGS, kDouble, kInt);
break;
case Instruction::DOUBLE_TO_LONG:
EmitInsn_FPToInt(ARGS, kDouble, kLong);
break;
case Instruction::DOUBLE_TO_FLOAT:
EmitInsn_FTrunc(ARGS);
break;
case Instruction::INT_TO_BYTE:
EmitInsn_TruncAndSExt(ARGS, 8);
break;
case Instruction::INT_TO_CHAR:
EmitInsn_TruncAndZExt(ARGS, 16);
break;
case Instruction::INT_TO_SHORT:
EmitInsn_TruncAndSExt(ARGS, 16);
break;
case Instruction::ADD_INT:
EmitInsn_IntArithm(ARGS, kIntArithm_Add, kInt, false);
break;
case Instruction::SUB_INT:
EmitInsn_IntArithm(ARGS, kIntArithm_Sub, kInt, false);
break;
case Instruction::MUL_INT:
EmitInsn_IntArithm(ARGS, kIntArithm_Mul, kInt, false);
break;
case Instruction::DIV_INT:
EmitInsn_IntArithm(ARGS, kIntArithm_Div, kInt, false);
break;
case Instruction::REM_INT:
EmitInsn_IntArithm(ARGS, kIntArithm_Rem, kInt, false);
break;
case Instruction::AND_INT:
EmitInsn_IntArithm(ARGS, kIntArithm_And, kInt, false);
break;
case Instruction::OR_INT:
EmitInsn_IntArithm(ARGS, kIntArithm_Or, kInt, false);
break;
case Instruction::XOR_INT:
EmitInsn_IntArithm(ARGS, kIntArithm_Xor, kInt, false);
break;
case Instruction::SHL_INT:
EmitInsn_IntArithm(ARGS, kIntArithm_Shl, kInt, false);
break;
case Instruction::SHR_INT:
EmitInsn_IntArithm(ARGS, kIntArithm_Shr, kInt, false);
break;
case Instruction::USHR_INT:
EmitInsn_IntArithm(ARGS, kIntArithm_UShr, kInt, false);
break;
case Instruction::ADD_LONG:
EmitInsn_IntArithm(ARGS, kIntArithm_Add, kLong, false);
break;
case Instruction::SUB_LONG:
EmitInsn_IntArithm(ARGS, kIntArithm_Sub, kLong, false);
break;
case Instruction::MUL_LONG:
EmitInsn_IntArithm(ARGS, kIntArithm_Mul, kLong, false);
break;
case Instruction::DIV_LONG:
EmitInsn_IntArithm(ARGS, kIntArithm_Div, kLong, false);
break;
case Instruction::REM_LONG:
EmitInsn_IntArithm(ARGS, kIntArithm_Rem, kLong, false);
break;
case Instruction::AND_LONG:
EmitInsn_IntArithm(ARGS, kIntArithm_And, kLong, false);
break;
case Instruction::OR_LONG:
EmitInsn_IntArithm(ARGS, kIntArithm_Or, kLong, false);
break;
case Instruction::XOR_LONG:
EmitInsn_IntArithm(ARGS, kIntArithm_Xor, kLong, false);
break;
case Instruction::SHL_LONG:
EmitInsn_IntArithm(ARGS, kIntArithm_Shl, kLong, false);
break;
case Instruction::SHR_LONG:
EmitInsn_IntArithm(ARGS, kIntArithm_Shr, kLong, false);
break;
case Instruction::USHR_LONG:
EmitInsn_IntArithm(ARGS, kIntArithm_UShr, kLong, false);
break;
case Instruction::ADD_FLOAT:
EmitInsn_FPArithm(ARGS, kFPArithm_Add, kFloat, false);
break;
case Instruction::SUB_FLOAT:
EmitInsn_FPArithm(ARGS, kFPArithm_Sub, kFloat, false);
break;
case Instruction::MUL_FLOAT:
EmitInsn_FPArithm(ARGS, kFPArithm_Mul, kFloat, false);
break;
case Instruction::DIV_FLOAT:
EmitInsn_FPArithm(ARGS, kFPArithm_Div, kFloat, false);
break;
case Instruction::REM_FLOAT:
EmitInsn_FPArithm(ARGS, kFPArithm_Rem, kFloat, false);
break;
case Instruction::ADD_DOUBLE:
EmitInsn_FPArithm(ARGS, kFPArithm_Add, kDouble, false);
break;
case Instruction::SUB_DOUBLE:
EmitInsn_FPArithm(ARGS, kFPArithm_Sub, kDouble, false);
break;
case Instruction::MUL_DOUBLE:
EmitInsn_FPArithm(ARGS, kFPArithm_Mul, kDouble, false);
break;
case Instruction::DIV_DOUBLE:
EmitInsn_FPArithm(ARGS, kFPArithm_Div, kDouble, false);
break;
case Instruction::REM_DOUBLE:
EmitInsn_FPArithm(ARGS, kFPArithm_Rem, kDouble, false);
break;
case Instruction::ADD_INT_2ADDR:
EmitInsn_IntArithm(ARGS, kIntArithm_Add, kInt, true);
break;
case Instruction::SUB_INT_2ADDR:
EmitInsn_IntArithm(ARGS, kIntArithm_Sub, kInt, true);
break;
case Instruction::MUL_INT_2ADDR:
EmitInsn_IntArithm(ARGS, kIntArithm_Mul, kInt, true);
break;
case Instruction::DIV_INT_2ADDR:
EmitInsn_IntArithm(ARGS, kIntArithm_Div, kInt, true);
break;
case Instruction::REM_INT_2ADDR:
EmitInsn_IntArithm(ARGS, kIntArithm_Rem, kInt, true);
break;
case Instruction::AND_INT_2ADDR:
EmitInsn_IntArithm(ARGS, kIntArithm_And, kInt, true);
break;
case Instruction::OR_INT_2ADDR:
EmitInsn_IntArithm(ARGS, kIntArithm_Or, kInt, true);
break;
case Instruction::XOR_INT_2ADDR:
EmitInsn_IntArithm(ARGS, kIntArithm_Xor, kInt, true);
break;
case Instruction::SHL_INT_2ADDR:
EmitInsn_IntArithm(ARGS, kIntArithm_Shl, kInt, true);
break;
case Instruction::SHR_INT_2ADDR:
EmitInsn_IntArithm(ARGS, kIntArithm_Shr, kInt, true);
break;
case Instruction::USHR_INT_2ADDR:
EmitInsn_IntArithm(ARGS, kIntArithm_UShr, kInt, true);
break;
case Instruction::ADD_LONG_2ADDR:
EmitInsn_IntArithm(ARGS, kIntArithm_Add, kLong, true);
break;
case Instruction::SUB_LONG_2ADDR:
EmitInsn_IntArithm(ARGS, kIntArithm_Sub, kLong, true);
break;
case Instruction::MUL_LONG_2ADDR:
EmitInsn_IntArithm(ARGS, kIntArithm_Mul, kLong, true);
break;
case Instruction::DIV_LONG_2ADDR:
EmitInsn_IntArithm(ARGS, kIntArithm_Div, kLong, true);
break;
case Instruction::REM_LONG_2ADDR:
EmitInsn_IntArithm(ARGS, kIntArithm_Rem, kLong, true);
break;
case Instruction::AND_LONG_2ADDR:
EmitInsn_IntArithm(ARGS, kIntArithm_And, kLong, true);
break;
case Instruction::OR_LONG_2ADDR:
EmitInsn_IntArithm(ARGS, kIntArithm_Or, kLong, true);
break;
case Instruction::XOR_LONG_2ADDR:
EmitInsn_IntArithm(ARGS, kIntArithm_Xor, kLong, true);
break;
case Instruction::SHL_LONG_2ADDR:
EmitInsn_IntArithm(ARGS, kIntArithm_Shl, kLong, true);
break;
case Instruction::SHR_LONG_2ADDR:
EmitInsn_IntArithm(ARGS, kIntArithm_Shr, kLong, true);
break;
case Instruction::USHR_LONG_2ADDR:
EmitInsn_IntArithm(ARGS, kIntArithm_UShr, kLong, true);
break;
case Instruction::ADD_FLOAT_2ADDR:
EmitInsn_FPArithm(ARGS, kFPArithm_Add, kFloat, true);
break;
case Instruction::SUB_FLOAT_2ADDR:
EmitInsn_FPArithm(ARGS, kFPArithm_Sub, kFloat, true);
break;
case Instruction::MUL_FLOAT_2ADDR:
EmitInsn_FPArithm(ARGS, kFPArithm_Mul, kFloat, true);
break;
case Instruction::DIV_FLOAT_2ADDR:
EmitInsn_FPArithm(ARGS, kFPArithm_Div, kFloat, true);
break;
case Instruction::REM_FLOAT_2ADDR:
EmitInsn_FPArithm(ARGS, kFPArithm_Rem, kFloat, true);
break;
case Instruction::ADD_DOUBLE_2ADDR:
EmitInsn_FPArithm(ARGS, kFPArithm_Add, kDouble, true);
break;
case Instruction::SUB_DOUBLE_2ADDR:
EmitInsn_FPArithm(ARGS, kFPArithm_Sub, kDouble, true);
break;
case Instruction::MUL_DOUBLE_2ADDR:
EmitInsn_FPArithm(ARGS, kFPArithm_Mul, kDouble, true);
break;
case Instruction::DIV_DOUBLE_2ADDR:
EmitInsn_FPArithm(ARGS, kFPArithm_Div, kDouble, true);
break;
case Instruction::REM_DOUBLE_2ADDR:
EmitInsn_FPArithm(ARGS, kFPArithm_Rem, kDouble, true);
break;
case Instruction::ADD_INT_LIT16:
case Instruction::ADD_INT_LIT8:
EmitInsn_IntArithmImmediate(ARGS, kIntArithm_Add);
break;
case Instruction::RSUB_INT:
case Instruction::RSUB_INT_LIT8:
EmitInsn_RSubImmediate(ARGS);
break;
case Instruction::MUL_INT_LIT16:
case Instruction::MUL_INT_LIT8:
EmitInsn_IntArithmImmediate(ARGS, kIntArithm_Mul);
break;
case Instruction::DIV_INT_LIT16:
case Instruction::DIV_INT_LIT8:
EmitInsn_IntArithmImmediate(ARGS, kIntArithm_Div);
break;
case Instruction::REM_INT_LIT16:
case Instruction::REM_INT_LIT8:
EmitInsn_IntArithmImmediate(ARGS, kIntArithm_Rem);
break;
case Instruction::AND_INT_LIT16:
case Instruction::AND_INT_LIT8:
EmitInsn_IntArithmImmediate(ARGS, kIntArithm_And);
break;
case Instruction::OR_INT_LIT16:
case Instruction::OR_INT_LIT8:
EmitInsn_IntArithmImmediate(ARGS, kIntArithm_Or);
break;
case Instruction::XOR_INT_LIT16:
case Instruction::XOR_INT_LIT8:
EmitInsn_IntArithmImmediate(ARGS, kIntArithm_Xor);
break;
case Instruction::SHL_INT_LIT8:
EmitInsn_IntArithmImmediate(ARGS, kIntArithm_Shl);
break;
case Instruction::SHR_INT_LIT8:
EmitInsn_IntArithmImmediate(ARGS, kIntArithm_Shr);
break;
case Instruction::USHR_INT_LIT8:
EmitInsn_IntArithmImmediate(ARGS, kIntArithm_UShr);
break;
case Instruction::UNUSED_3E:
case Instruction::UNUSED_3F:
case Instruction::UNUSED_40:
case Instruction::UNUSED_41:
case Instruction::UNUSED_42:
case Instruction::UNUSED_43:
case Instruction::UNUSED_73:
case Instruction::UNUSED_79:
case Instruction::UNUSED_7A:
case Instruction::UNUSED_E3:
case Instruction::UNUSED_E4:
case Instruction::UNUSED_E5:
case Instruction::UNUSED_E6:
case Instruction::UNUSED_E7:
case Instruction::UNUSED_E8:
case Instruction::UNUSED_E9:
case Instruction::UNUSED_EA:
case Instruction::UNUSED_EB:
case Instruction::UNUSED_EC:
case Instruction::THROW_VERIFICATION_ERROR:
case Instruction::UNUSED_EE:
case Instruction::UNUSED_EF:
case Instruction::UNUSED_F0:
case Instruction::UNUSED_F1:
case Instruction::UNUSED_F2:
case Instruction::UNUSED_F3:
case Instruction::UNUSED_F4:
case Instruction::UNUSED_F5:
case Instruction::UNUSED_F6:
case Instruction::UNUSED_F7:
case Instruction::UNUSED_F8:
case Instruction::UNUSED_F9:
case Instruction::UNUSED_FA:
case Instruction::UNUSED_FB:
case Instruction::UNUSED_FC:
case Instruction::UNUSED_FD:
case Instruction::UNUSED_FE:
case Instruction::UNUSED_FF:
LOG(FATAL) << "Dex file contains UNUSED bytecode: " << insn->Opcode();
break;
}
#undef ARGS
}
void MethodCompiler::EmitInsn_Nop(uint32_t dex_pc,
Instruction const* insn) {
uint16_t insn_signature = code_item_->insns_[dex_pc];
if (insn_signature == Instruction::kPackedSwitchSignature ||
insn_signature == Instruction::kSparseSwitchSignature ||
insn_signature == Instruction::kArrayDataSignature) {
irb_.CreateUnreachable();
} else{
irb_.CreateBr(GetNextBasicBlock(dex_pc));
}
}
void MethodCompiler::EmitInsn_Move(uint32_t dex_pc,
Instruction const* insn,
JType jty) {
Instruction::DecodedInstruction dec_insn(insn);
llvm::Value* src_value = EmitLoadDalvikReg(dec_insn.vB_, jty, kReg);
EmitStoreDalvikReg(dec_insn.vA_, jty, kReg, src_value);
irb_.CreateBr(GetNextBasicBlock(dex_pc));
}
void MethodCompiler::EmitInsn_MoveResult(uint32_t dex_pc,
Instruction const* insn,
JType jty) {
Instruction::DecodedInstruction dec_insn(insn);
llvm::Value* src_value = EmitLoadDalvikRetValReg(jty, kReg);
EmitStoreDalvikReg(dec_insn.vA_, jty, kReg, src_value);
irb_.CreateBr(GetNextBasicBlock(dex_pc));
}
void MethodCompiler::EmitInsn_MoveException(uint32_t dex_pc,
Instruction const* insn) {
Instruction::DecodedInstruction dec_insn(insn);
// Get thread-local exception field address
llvm::Constant* exception_field_offset =
irb_.getPtrEquivInt(Thread::ExceptionOffset().Int32Value());
llvm::Value* thread_object_addr =
irb_.CreateCall(irb_.GetRuntime(GetCurrentThread));
llvm::Value* exception_field_addr =
irb_.CreatePtrDisp(thread_object_addr, exception_field_offset,
irb_.getJObjectTy()->getPointerTo());
// Get exception object address
llvm::Value* exception_object_addr = irb_.CreateLoad(exception_field_addr);
// Set thread-local exception field address to NULL
irb_.CreateStore(irb_.getJNull(), exception_field_addr);
// Keep the exception object in the Dalvik register
EmitStoreDalvikReg(dec_insn.vA_, kObject, kAccurate, exception_object_addr);
irb_.CreateBr(GetNextBasicBlock(dex_pc));
}
void MethodCompiler::EmitInsn_ThrowException(uint32_t dex_pc,
Instruction const* insn) {
Instruction::DecodedInstruction dec_insn(insn);
llvm::Value* exception_addr =
EmitLoadDalvikReg(dec_insn.vA_, kObject, kAccurate);
irb_.CreateCall(irb_.GetRuntime(ThrowException), exception_addr);
EmitBranchExceptionLandingPad(dex_pc);
}
void MethodCompiler::EmitInsn_ReturnVoid(uint32_t dex_pc,
Instruction const* insn) {
// Garbage collection safe-point
EmitGuard_GarbageCollectionSuspend(dex_pc);
// Return!
irb_.CreateRetVoid();
}
void MethodCompiler::EmitInsn_Return(uint32_t dex_pc,
Instruction const* insn) {
Instruction::DecodedInstruction dec_insn(insn);
// Garbage collection safe-point
EmitGuard_GarbageCollectionSuspend(dex_pc);
// Return!
char ret_shorty = method_helper_.GetShorty()[0];
llvm::Value* retval = EmitLoadDalvikReg(dec_insn.vA_, ret_shorty, kAccurate);
irb_.CreateRet(retval);
}
void MethodCompiler::EmitInsn_LoadConstant(uint32_t dex_pc,
Instruction const* insn,
JType imm_jty) {
Instruction::DecodedInstruction dec_insn(insn);
DCHECK(imm_jty == kInt || imm_jty == kLong) << imm_jty;
int64_t imm = 0;
switch (insn->Opcode()) {
// 32-bit Immediate
case Instruction::CONST_4:
case Instruction::CONST_16:
case Instruction::CONST:
case Instruction::CONST_WIDE_16:
case Instruction::CONST_WIDE_32:
imm = static_cast<int64_t>(static_cast<int32_t>(dec_insn.vB_));
break;
case Instruction::CONST_HIGH16:
imm = static_cast<int64_t>(static_cast<int32_t>(
static_cast<uint32_t>(static_cast<uint16_t>(dec_insn.vB_)) << 16));
break;
// 64-bit Immediate
case Instruction::CONST_WIDE:
imm = static_cast<int64_t>(dec_insn.vB_wide_);
break;
case Instruction::CONST_WIDE_HIGH16:
imm = static_cast<int64_t>(
static_cast<uint64_t>(static_cast<uint16_t>(dec_insn.vB_)) << 48);
break;
// Unknown opcode for load constant (unreachable)
default:
LOG(FATAL) << "Unknown opcode for load constant: " << insn->Opcode();
break;
}
// Store the non-object register
llvm::Type* imm_type = irb_.getJType(imm_jty, kAccurate);
llvm::Constant* imm_value = llvm::ConstantInt::getSigned(imm_type, imm);
EmitStoreDalvikReg(dec_insn.vA_, imm_jty, kAccurate, imm_value);
// Store the object register if it is possible to be null.
if (imm_jty == kInt && imm == 0) {
EmitStoreDalvikReg(dec_insn.vA_, kObject, kAccurate, irb_.getJNull());
}
irb_.CreateBr(GetNextBasicBlock(dex_pc));
}
void MethodCompiler::EmitInsn_LoadConstantString(uint32_t dex_pc,
Instruction const* insn) {
// UNIMPLEMENTED(WARNING);
irb_.CreateBr(GetNextBasicBlock(dex_pc));
}
llvm::Value* MethodCompiler::EmitLoadConstantClass(uint32_t dex_pc,
uint32_t type_idx) {
if (!compiler_->CanAccessTypeWithoutChecks(method_idx_, dex_cache_,
*dex_file_, type_idx)) {
llvm::Value* type_idx_value = irb_.getInt32(type_idx);
llvm::Value* method_object_addr = EmitLoadMethodObjectAddr();
llvm::Function* runtime_func =
irb_.GetRuntime(InitializeTypeAndVerifyAccess);
llvm::Value* type_object_addr =
irb_.CreateCall2(runtime_func, type_idx_value, method_object_addr);
EmitGuard_ExceptionLandingPad(dex_pc);
return type_object_addr;
} else {
// Try to load the class (type) object from the test cache.
llvm::Value* type_field_addr =
EmitLoadDexCacheResolvedTypeFieldAddr(type_idx);
llvm::Value* type_object_addr = irb_.CreateLoad(type_field_addr);
if (compiler_->CanAssumeTypeIsPresentInDexCache(dex_cache_, type_idx)) {
return type_object_addr;
}
llvm::BasicBlock* block_original = irb_.GetInsertBlock();
// Test whether class (type) object is in the dex cache or not
llvm::Value* equal_null =
irb_.CreateICmpEQ(type_object_addr, irb_.getJNull());
llvm::BasicBlock* block_cont =
CreateBasicBlockWithDexPC(dex_pc, "cont");
llvm::BasicBlock* block_load_class =
CreateBasicBlockWithDexPC(dex_pc, "load_class");
irb_.CreateCondBr(equal_null, block_load_class, block_cont);
// Failback routine to load the class object
irb_.SetInsertPoint(block_load_class);
llvm::Function* runtime_func = irb_.GetRuntime(InitializeType);
llvm::Constant* type_idx_value = irb_.getInt32(type_idx);
llvm::Value* method_object_addr = EmitLoadMethodObjectAddr();
llvm::Value* loaded_type_object_addr =
irb_.CreateCall2(runtime_func, type_idx_value, method_object_addr);
EmitGuard_ExceptionLandingPad(dex_pc);
llvm::BasicBlock* block_after_load_class = irb_.GetInsertBlock();
irb_.CreateBr(block_cont);
// Now the class object must be loaded
irb_.SetInsertPoint(block_cont);
llvm::PHINode* phi = irb_.CreatePHI(irb_.getJObjectTy(), 2);
phi->addIncoming(type_object_addr, block_original);
phi->addIncoming(loaded_type_object_addr, block_after_load_class);
return phi;
}
}
void MethodCompiler::EmitInsn_LoadConstantClass(uint32_t dex_pc,
Instruction const* insn) {
Instruction::DecodedInstruction dec_insn(insn);
llvm::Value* type_object_addr = EmitLoadConstantClass(dex_pc, dec_insn.vB_);
EmitStoreDalvikReg(dec_insn.vA_, kObject, kAccurate, type_object_addr);
irb_.CreateBr(GetNextBasicBlock(dex_pc));
}
void MethodCompiler::EmitInsn_MonitorEnter(uint32_t dex_pc,
Instruction const* insn) {
Instruction::DecodedInstruction dec_insn(insn);
llvm::Value* object_addr =
EmitLoadDalvikReg(dec_insn.vA_, kObject, kAccurate);
// TODO: Slow path always. May not need NullPointerException check.
EmitGuard_NullPointerException(dex_pc, object_addr);
irb_.CreateCall(irb_.GetRuntime(LockObject), object_addr);
EmitGuard_ExceptionLandingPad(dex_pc);
irb_.CreateBr(GetNextBasicBlock(dex_pc));
}
void MethodCompiler::EmitInsn_MonitorExit(uint32_t dex_pc,
Instruction const* insn) {
Instruction::DecodedInstruction dec_insn(insn);
llvm::Value* object_addr =
EmitLoadDalvikReg(dec_insn.vA_, kObject, kAccurate);
EmitGuard_NullPointerException(dex_pc, object_addr);
irb_.CreateCall(irb_.GetRuntime(UnlockObject), object_addr);
EmitGuard_ExceptionLandingPad(dex_pc);
irb_.CreateBr(GetNextBasicBlock(dex_pc));
}
void MethodCompiler::EmitInsn_CheckCast(uint32_t dex_pc,
Instruction const* insn) {
Instruction::DecodedInstruction dec_insn(insn);
llvm::BasicBlock* block_test_class =
CreateBasicBlockWithDexPC(dex_pc, "test_class");
llvm::BasicBlock* block_test_sub_class =
CreateBasicBlockWithDexPC(dex_pc, "test_sub_class");
llvm::Value* object_addr =
EmitLoadDalvikReg(dec_insn.vA_, kObject, kAccurate);
// Test: Is the reference equal to null? Act as no-op when it is null.
llvm::Value* equal_null = irb_.CreateICmpEQ(object_addr, irb_.getJNull());
irb_.CreateCondBr(equal_null,
GetNextBasicBlock(dex_pc),
block_test_class);
// Test: Is the object instantiated from the given class?
irb_.SetInsertPoint(block_test_class);
llvm::Value* type_object_addr = EmitLoadConstantClass(dex_pc, dec_insn.vB_);
DCHECK_EQ(Object::ClassOffset().Int32Value(), 0);
llvm::PointerType* jobject_ptr_ty = irb_.getJObjectTy();
llvm::Value* object_type_field_addr =
irb_.CreateBitCast(object_addr, jobject_ptr_ty->getPointerTo());
llvm::Value* object_type_object_addr =
irb_.CreateLoad(object_type_field_addr);
llvm::Value* equal_class =
irb_.CreateICmpEQ(type_object_addr, object_type_object_addr);
irb_.CreateCondBr(equal_class,
GetNextBasicBlock(dex_pc),
block_test_sub_class);
// Test: Is the object instantiated from the subclass of the given class?
irb_.SetInsertPoint(block_test_sub_class);
irb_.CreateCall2(irb_.GetRuntime(CheckCast),
type_object_addr, object_type_object_addr);
EmitGuard_ExceptionLandingPad(dex_pc);
irb_.CreateBr(GetNextBasicBlock(dex_pc));
}
void MethodCompiler::EmitInsn_InstanceOf(uint32_t dex_pc,
Instruction const* insn) {
Instruction::DecodedInstruction dec_insn(insn);
llvm::Constant* zero = irb_.getJInt(0);
llvm::Constant* one = irb_.getJInt(1);
llvm::BasicBlock* block_nullp = CreateBasicBlockWithDexPC(dex_pc, "nullp");
llvm::BasicBlock* block_test_class =
CreateBasicBlockWithDexPC(dex_pc, "test_class");
llvm::BasicBlock* block_class_equals =
CreateBasicBlockWithDexPC(dex_pc, "class_eq");
llvm::BasicBlock* block_test_sub_class =
CreateBasicBlockWithDexPC(dex_pc, "test_sub_class");
llvm::Value* object_addr =
EmitLoadDalvikReg(dec_insn.vB_, kObject, kAccurate);
// Overview of the following code :
// We check for null, if so, then false, otherwise check for class == . If so
// then true, otherwise do callout slowpath.
//
// Test: Is the reference equal to null? Set 0 when it is null.
llvm::Value* equal_null = irb_.CreateICmpEQ(object_addr, irb_.getJNull());
irb_.CreateCondBr(equal_null, block_nullp, block_test_class);
irb_.SetInsertPoint(block_nullp);
EmitStoreDalvikReg(dec_insn.vA_, kInt, kAccurate, zero);
irb_.CreateBr(GetNextBasicBlock(dex_pc));
// Test: Is the object instantiated from the given class?
irb_.SetInsertPoint(block_test_class);
llvm::Value* type_object_addr = EmitLoadConstantClass(dex_pc, dec_insn.vC_);
DCHECK_EQ(Object::ClassOffset().Int32Value(), 0);
llvm::PointerType* jobject_ptr_ty = irb_.getJObjectTy();
llvm::Value* object_type_field_addr =
irb_.CreateBitCast(object_addr, jobject_ptr_ty->getPointerTo());
llvm::Value* object_type_object_addr =
irb_.CreateLoad(object_type_field_addr);
llvm::Value* equal_class =
irb_.CreateICmpEQ(type_object_addr, object_type_object_addr);
irb_.CreateCondBr(equal_class, block_class_equals, block_test_sub_class);
irb_.SetInsertPoint(block_class_equals);
EmitStoreDalvikReg(dec_insn.vA_, kInt, kAccurate, one);
irb_.CreateBr(GetNextBasicBlock(dex_pc));
// Test: Is the object instantiated from the subclass of the given class?
irb_.SetInsertPoint(block_test_sub_class);
llvm::Value* result =
irb_.CreateCall2(irb_.GetRuntime(IsAssignable),
type_object_addr, object_type_object_addr);
EmitStoreDalvikReg(dec_insn.vA_, kInt, kAccurate, result);
irb_.CreateBr(GetNextBasicBlock(dex_pc));
}
llvm::Value* MethodCompiler::EmitLoadArrayLength(llvm::Value* array) {
// Load array length field address
llvm::Constant* array_len_field_offset =
irb_.getPtrEquivInt(Array::LengthOffset().Int32Value());
llvm::Value* array_len_field_addr =
irb_.CreatePtrDisp(array, array_len_field_offset,
irb_.getJIntTy()->getPointerTo());
// Load array length
return irb_.CreateLoad(array_len_field_addr);
}
void MethodCompiler::EmitInsn_ArrayLength(uint32_t dex_pc,
Instruction const* insn) {
Instruction::DecodedInstruction dec_insn(insn);
// Get the array object address
llvm::Value* array_addr = EmitLoadDalvikReg(dec_insn.vB_, kObject, kAccurate);
EmitGuard_NullPointerException(dex_pc, array_addr);
// Get the array length and store it to the register
llvm::Value* array_len = EmitLoadArrayLength(array_addr);
EmitStoreDalvikReg(dec_insn.vA_, kInt, kAccurate, array_len);
irb_.CreateBr(GetNextBasicBlock(dex_pc));
}
void MethodCompiler::EmitInsn_NewInstance(uint32_t dex_pc,
Instruction const* insn) {
Instruction::DecodedInstruction dec_insn(insn);
llvm::Function* runtime_func;
if (compiler_->CanAccessTypeWithoutChecks(method_idx_, dex_cache_,
*dex_file_, dec_insn.vB_)) {
runtime_func = irb_.GetRuntime(AllocObject);
} else {
runtime_func = irb_.GetRuntime(AllocObjectWithAccessCheck);
}
llvm::Constant* type_index_value = irb_.getInt32(dec_insn.vB_);
llvm::Value* method_object_addr = EmitLoadMethodObjectAddr();
llvm::Value* object_addr =
irb_.CreateCall2(runtime_func, type_index_value, method_object_addr);
EmitGuard_ExceptionLandingPad(dex_pc);
EmitStoreDalvikReg(dec_insn.vA_, kObject, kAccurate, object_addr);
irb_.CreateBr(GetNextBasicBlock(dex_pc));
}
llvm::Value* MethodCompiler::EmitAllocNewArray(uint32_t dex_pc,
int32_t length,
uint32_t type_idx,
bool is_filled_new_array) {
llvm::Function* runtime_func;
bool skip_access_check =
compiler_->CanAccessTypeWithoutChecks(method_idx_, dex_cache_,
*dex_file_, type_idx);
if (is_filled_new_array) {
runtime_func = skip_access_check ?
irb_.GetRuntime(CheckAndAllocArray) :
irb_.GetRuntime(CheckAndAllocArrayWithAccessCheck);
} else {
runtime_func = skip_access_check ?
irb_.GetRuntime(AllocArray) :
irb_.GetRuntime(AllocArrayWithAccessCheck);
}
llvm::Constant* type_index_value = irb_.getInt32(type_idx);
llvm::Value* method_object_addr = EmitLoadMethodObjectAddr();
llvm::Value* array_length_value = irb_.getInt32(length);
llvm::Value* object_addr =
irb_.CreateCall3(runtime_func, type_index_value, method_object_addr,
array_length_value);
EmitGuard_ExceptionLandingPad(dex_pc);
return object_addr;
}
void MethodCompiler::EmitInsn_NewArray(uint32_t dex_pc,
Instruction const* insn) {
Instruction::DecodedInstruction dec_insn(insn);
llvm::Value* object_addr =
EmitAllocNewArray(dex_pc, dec_insn.vB_, dec_insn.vC_, false);
EmitStoreDalvikReg(dec_insn.vA_, kObject, kAccurate, object_addr);
irb_.CreateBr(GetNextBasicBlock(dex_pc));
}
void MethodCompiler::EmitInsn_FilledNewArray(uint32_t dex_pc,
Instruction const* insn,
bool is_range) {
Instruction::DecodedInstruction dec_insn(insn);
llvm::Value* object_addr =
EmitAllocNewArray(dex_pc, dec_insn.vA_, dec_insn.vB_, true);
if (dec_insn.vA_ > 0) {
llvm::Value* object_addr_int =
irb_.CreatePtrToInt(object_addr, irb_.getPtrEquivIntTy());
llvm::Value* data_field_offset =
irb_.getPtrEquivInt(Array::DataOffset().Int32Value());
llvm::Value* data_field_addr_int =
irb_.CreateAdd(object_addr_int, data_field_offset);
Class* klass = method_->GetDexCacheResolvedTypes()->Get(dec_insn.vB_);
CHECK_NE(klass, static_cast<Class*>(NULL));
// Moved this below already: CHECK(!klass->IsPrimitive() || klass->IsPrimitiveInt());
llvm::Constant* word_size = irb_.getSizeOfPtrEquivIntValue();
llvm::Type* field_type;
if (klass->IsPrimitiveInt()) {
field_type = irb_.getJIntTy()->getPointerTo();
} else {
CHECK(!klass->IsPrimitive());
field_type = irb_.getJObjectTy()->getPointerTo();
}
// TODO: Tune this code. Currently we are generating one instruction for
// one element which may be very space consuming. Maybe changing to use
// memcpy may help; however, since we can't guarantee that the alloca of
// dalvik register are continuous, we can't perform such optimization yet.
for (uint32_t i = 0; i < dec_insn.vA_; ++i) {
llvm::Value* data_field_addr =
irb_.CreateIntToPtr(data_field_addr_int, field_type);
int reg_index;
if (is_range) {
reg_index = dec_insn.vC_ + i;
} else {
reg_index = dec_insn.arg_[i];
}
llvm::Value* reg_value;
if (klass->IsPrimitiveInt()) {
reg_value = EmitLoadDalvikReg(reg_index, kInt, kAccurate);
} else {
reg_value = EmitLoadDalvikReg(reg_index, kObject, kAccurate);
}
irb_.CreateStore(reg_value, data_field_addr);
data_field_addr_int = irb_.CreateAdd(data_field_addr_int, word_size);
}
}
EmitStoreDalvikRetValReg(kObject, kAccurate, object_addr);
irb_.CreateBr(GetNextBasicBlock(dex_pc));
}
void MethodCompiler::EmitInsn_FillArrayData(uint32_t dex_pc,
Instruction const* insn) {
// UNIMPLEMENTED(WARNING);
irb_.CreateBr(GetNextBasicBlock(dex_pc));
}
void MethodCompiler::EmitInsn_UnconditionalBranch(uint32_t dex_pc,
Instruction const* insn) {
Instruction::DecodedInstruction dec_insn(insn);
int32_t branch_offset = dec_insn.vA_;
if (branch_offset <= 0) {
// Garbage collection safe-point on backward branch
EmitGuard_GarbageCollectionSuspend(dex_pc);
}
irb_.CreateBr(GetBasicBlock(dex_pc + branch_offset));
}
void MethodCompiler::EmitInsn_PackedSwitch(uint32_t dex_pc,
Instruction const* insn) {
Instruction::DecodedInstruction dec_insn(insn);
struct PACKED Payload {
uint16_t ident_;
uint16_t num_cases_;
int32_t first_key_;
int32_t targets_[];
};
int32_t payload_offset = static_cast<int32_t>(dex_pc) +
static_cast<int32_t>(dec_insn.vB_);
Payload const* payload =
reinterpret_cast<Payload const*>(code_item_->insns_ + payload_offset);
llvm::Value* value = EmitLoadDalvikReg(dec_insn.vA_, kInt, kAccurate);
llvm::SwitchInst* sw =
irb_.CreateSwitch(value, GetNextBasicBlock(dex_pc), payload->num_cases_);
for (uint16_t i = 0; i < payload->num_cases_; ++i) {
sw->addCase(irb_.getInt32(payload->first_key_ + i),
GetBasicBlock(dex_pc + payload->targets_[i]));
}
}
void MethodCompiler::EmitInsn_SparseSwitch(uint32_t dex_pc,
Instruction const* insn) {
Instruction::DecodedInstruction dec_insn(insn);
struct PACKED Payload {
uint16_t ident_;
uint16_t num_cases_;
int32_t keys_and_targets_[];
};
int32_t payload_offset = static_cast<int32_t>(dex_pc) +
static_cast<int32_t>(dec_insn.vB_);
Payload const* payload =
reinterpret_cast<Payload const*>(code_item_->insns_ + payload_offset);
int32_t const* keys = payload->keys_and_targets_;
int32_t const* targets = payload->keys_and_targets_ + payload->num_cases_;
llvm::Value* value = EmitLoadDalvikReg(dec_insn.vA_, kInt, kAccurate);
llvm::SwitchInst* sw =
irb_.CreateSwitch(value, GetNextBasicBlock(dex_pc), payload->num_cases_);
for (size_t i = 0; i < payload->num_cases_; ++i) {
sw->addCase(irb_.getInt32(keys[i]), GetBasicBlock(dex_pc + targets[i]));
}
}
void MethodCompiler::EmitInsn_FPCompare(uint32_t dex_pc,
Instruction const* insn,
JType fp_jty,
bool gt_bias) {
Instruction::DecodedInstruction dec_insn(insn);
DCHECK(fp_jty == kFloat || fp_jty == kDouble) << "JType: " << fp_jty;
llvm::Value* src1_value = EmitLoadDalvikReg(dec_insn.vB_, fp_jty, kAccurate);
llvm::Value* src2_value = EmitLoadDalvikReg(dec_insn.vC_, fp_jty, kAccurate);
llvm::Value* cmp_eq = irb_.CreateFCmpOEQ(src1_value, src2_value);
llvm::Value* cmp_lt;
if (gt_bias) {
cmp_lt = irb_.CreateFCmpOLT(src1_value, src2_value);
} else {
cmp_lt = irb_.CreateFCmpULT(src1_value, src2_value);
}
llvm::Value* result = EmitCompareResultSelection(cmp_eq, cmp_lt);
EmitStoreDalvikReg(dec_insn.vA_, kInt, kAccurate, result);
irb_.CreateBr(GetNextBasicBlock(dex_pc));
}
void MethodCompiler::EmitInsn_LongCompare(uint32_t dex_pc,
Instruction const* insn) {
Instruction::DecodedInstruction dec_insn(insn);
llvm::Value* src1_value = EmitLoadDalvikReg(dec_insn.vB_, kLong, kAccurate);
llvm::Value* src2_value = EmitLoadDalvikReg(dec_insn.vC_, kLong, kAccurate);
llvm::Value* cmp_eq = irb_.CreateICmpEQ(src1_value, src2_value);
llvm::Value* cmp_lt = irb_.CreateICmpSLT(src1_value, src2_value);
llvm::Value* result = EmitCompareResultSelection(cmp_eq, cmp_lt);
EmitStoreDalvikReg(dec_insn.vA_, kInt, kAccurate, result);
irb_.CreateBr(GetNextBasicBlock(dex_pc));
}
llvm::Value* MethodCompiler::EmitCompareResultSelection(llvm::Value* cmp_eq,
llvm::Value* cmp_lt) {
llvm::Constant* zero = irb_.getJInt(0);
llvm::Constant* pos1 = irb_.getJInt(1);
llvm::Constant* neg1 = irb_.getJInt(-1);
llvm::Value* result_lt = irb_.CreateSelect(cmp_lt, neg1, pos1);
llvm::Value* result_eq = irb_.CreateSelect(cmp_eq, zero, result_lt);
return result_eq;
}
void MethodCompiler::EmitInsn_BinaryConditionalBranch(uint32_t dex_pc,
Instruction const* insn,
CondBranchKind cond) {
Instruction::DecodedInstruction dec_insn(insn);
int8_t src1_reg_cat = GetInferredRegCategory(dex_pc, dec_insn.vA_);
int8_t src2_reg_cat = GetInferredRegCategory(dex_pc, dec_insn.vB_);
DCHECK_NE(kRegUnknown, src1_reg_cat);
DCHECK_NE(kRegUnknown, src2_reg_cat);
DCHECK_NE(kRegCat2, src1_reg_cat);
DCHECK_NE(kRegCat2, src2_reg_cat);
int32_t branch_offset = dec_insn.vC_;
if (branch_offset <= 0) {
// Garbage collection safe-point on backward branch
EmitGuard_GarbageCollectionSuspend(dex_pc);
}
if (src1_reg_cat == kRegZero && src2_reg_cat == kRegZero) {
irb_.CreateBr(GetBasicBlock(dex_pc + branch_offset));
return;
}
llvm::Value* src1_value;
llvm::Value* src2_value;
if (src1_reg_cat != kRegZero && src2_reg_cat != kRegZero) {
CHECK_EQ(src1_reg_cat, src2_reg_cat);
if (src1_reg_cat == kRegCat1nr) {
src1_value = EmitLoadDalvikReg(dec_insn.vA_, kInt, kAccurate);
src2_value = EmitLoadDalvikReg(dec_insn.vB_, kInt, kAccurate);
} else {
src1_value = EmitLoadDalvikReg(dec_insn.vA_, kObject, kAccurate);
src2_value = EmitLoadDalvikReg(dec_insn.vB_, kObject, kAccurate);
}
} else {
DCHECK(src1_reg_cat == kRegZero ||
src2_reg_cat == kRegZero);
if (src1_reg_cat == kRegZero) {
if (src2_reg_cat == kRegCat1nr) {
src1_value = irb_.getJInt(0);
src2_value = EmitLoadDalvikReg(dec_insn.vA_, kInt, kAccurate);
} else {
src1_value = irb_.getJNull();
src2_value = EmitLoadDalvikReg(dec_insn.vA_, kObject, kAccurate);
}
} else { // src2_reg_cat == kRegZero
if (src2_reg_cat == kRegCat1nr) {
src1_value = EmitLoadDalvikReg(dec_insn.vA_, kInt, kAccurate);
src2_value = irb_.getJInt(0);
} else {
src1_value = EmitLoadDalvikReg(dec_insn.vA_, kObject, kAccurate);
src2_value = irb_.getJNull();
}
}
}
llvm::Value* cond_value =
EmitConditionResult(src1_value, src2_value, cond);
irb_.CreateCondBr(cond_value,
GetBasicBlock(dex_pc + branch_offset),
GetNextBasicBlock(dex_pc));
}
void MethodCompiler::EmitInsn_UnaryConditionalBranch(uint32_t dex_pc,
Instruction const* insn,
CondBranchKind cond) {
Instruction::DecodedInstruction dec_insn(insn);
int8_t src_reg_cat = GetInferredRegCategory(dex_pc, dec_insn.vA_);
DCHECK_NE(kRegUnknown, src_reg_cat);
DCHECK_NE(kRegCat2, src_reg_cat);
int32_t branch_offset = dec_insn.vB_;
if (branch_offset <= 0) {
// Garbage collection safe-point on backward branch
EmitGuard_GarbageCollectionSuspend(dex_pc);
}
if (src_reg_cat == kRegZero) {
irb_.CreateBr(GetBasicBlock(dex_pc + branch_offset));
return;
}
llvm::Value* src1_value;
llvm::Value* src2_value;
if (src_reg_cat == kRegCat1nr) {
src1_value = EmitLoadDalvikReg(dec_insn.vA_, kInt, kAccurate);
src2_value = irb_.getInt32(0);
} else {
src1_value = EmitLoadDalvikReg(dec_insn.vA_, kObject, kAccurate);
src2_value = irb_.getJNull();
}
llvm::Value* cond_value =
EmitConditionResult(src1_value, src2_value, cond);
irb_.CreateCondBr(cond_value,
GetBasicBlock(dex_pc + branch_offset),
GetNextBasicBlock(dex_pc));
}
RegCategory MethodCompiler::GetInferredRegCategory(uint32_t dex_pc,
uint16_t reg_idx) {
InferredRegCategoryMap const* map = method_->GetInferredRegCategoryMap();
CHECK_NE(map, static_cast<InferredRegCategoryMap*>(NULL));
return map->GetRegCategory(dex_pc, reg_idx);
}
llvm::Value* MethodCompiler::EmitConditionResult(llvm::Value* lhs,
llvm::Value* rhs,
CondBranchKind cond) {
switch (cond) {
case kCondBranch_EQ:
return irb_.CreateICmpEQ(lhs, rhs);
case kCondBranch_NE:
return irb_.CreateICmpNE(lhs, rhs);
case kCondBranch_LT:
return irb_.CreateICmpSLT(lhs, rhs);
case kCondBranch_GE:
return irb_.CreateICmpSGE(lhs, rhs);
case kCondBranch_GT:
return irb_.CreateICmpSGT(lhs, rhs);
case kCondBranch_LE:
return irb_.CreateICmpSLE(lhs, rhs);
default: // Unreachable
LOG(FATAL) << "Unknown conditional branch kind: " << cond;
return NULL;
}
}
void
MethodCompiler::EmitGuard_ArrayIndexOutOfBoundsException(uint32_t dex_pc,
llvm::Value* array,
llvm::Value* index) {
llvm::Value* array_len = EmitLoadArrayLength(array);
llvm::Value* cmp = irb_.CreateICmpUGE(index, array_len);
llvm::BasicBlock* block_exception =
CreateBasicBlockWithDexPC(dex_pc, "overflow");
llvm::BasicBlock* block_continue =
CreateBasicBlockWithDexPC(dex_pc, "cont");
irb_.CreateCondBr(cmp, block_exception, block_continue);
irb_.SetInsertPoint(block_exception);
irb_.CreateCall2(irb_.GetRuntime(ThrowIndexOutOfBounds), index, array_len);
EmitBranchExceptionLandingPad(dex_pc);
irb_.SetInsertPoint(block_continue);
}
void MethodCompiler::EmitGuard_ArrayException(uint32_t dex_pc,
llvm::Value* array,
llvm::Value* index) {
EmitGuard_NullPointerException(dex_pc, array);
EmitGuard_ArrayIndexOutOfBoundsException(dex_pc, array, index);
}
// Emit Array GetElementPtr
llvm::Value* MethodCompiler::EmitArrayGEP(llvm::Value* array_addr,
llvm::Value* index_value,
llvm::Type* elem_type) {
llvm::Constant* data_offset_value =
irb_.getPtrEquivInt(Array::DataOffset().Int32Value());
llvm::Value* array_data_addr =
irb_.CreatePtrDisp(array_addr, data_offset_value,
elem_type->getPointerTo());
return irb_.CreateGEP(array_data_addr, index_value);
}
void MethodCompiler::EmitInsn_AGet(uint32_t dex_pc,
Instruction const* insn,
JType elem_jty) {
Instruction::DecodedInstruction dec_insn(insn);
llvm::Value* array_addr = EmitLoadDalvikReg(dec_insn.vB_, kObject, kAccurate);
llvm::Value* index_value = EmitLoadDalvikReg(dec_insn.vC_, kInt, kAccurate);
EmitGuard_ArrayException(dex_pc, array_addr, index_value);
llvm::Type* elem_type = irb_.getJType(elem_jty, kArray);
llvm::Value* array_elem_addr =
EmitArrayGEP(array_addr, index_value, elem_type);
llvm::Value* array_elem_value = irb_.CreateLoad(array_elem_addr);
EmitStoreDalvikReg(dec_insn.vA_, elem_jty, kArray, array_elem_value);
irb_.CreateBr(GetNextBasicBlock(dex_pc));
}
void MethodCompiler::EmitInsn_APut(uint32_t dex_pc,
Instruction const* insn,
JType elem_jty) {
Instruction::DecodedInstruction dec_insn(insn);
llvm::Value* array_addr = EmitLoadDalvikReg(dec_insn.vB_, kObject, kAccurate);
llvm::Value* index_value = EmitLoadDalvikReg(dec_insn.vC_, kInt, kAccurate);
EmitGuard_ArrayException(dex_pc, array_addr, index_value);
llvm::Type* elem_type = irb_.getJType(elem_jty, kArray);
llvm::Value* array_elem_addr =
EmitArrayGEP(array_addr, index_value, elem_type);
llvm::Value* new_value = EmitLoadDalvikReg(dec_insn.vA_, elem_jty, kArray);
irb_.CreateStore(new_value, array_elem_addr);
irb_.CreateBr(GetNextBasicBlock(dex_pc));
}
void MethodCompiler::PrintUnresolvedFieldWarning(int32_t field_idx) {
DexFile const& dex_file = method_helper_.GetDexFile();
DexFile::FieldId const& field_id = dex_file.GetFieldId(field_idx);
LOG(WARNING) << "unable to resolve static field " << field_idx << " ("
<< dex_file.GetFieldName(field_id) << ") in "
<< dex_file.GetFieldDeclaringClassDescriptor(field_id);
}
void MethodCompiler::EmitInsn_IGet(uint32_t dex_pc,
Instruction const* insn,
JType field_jty) {
Instruction::DecodedInstruction dec_insn(insn);
uint32_t reg_idx = dec_insn.vB_;
uint32_t field_idx = dec_insn.vC_;
Field* field = dex_cache_->GetResolvedField(field_idx);
llvm::Value* object_addr = EmitLoadDalvikReg(reg_idx, kObject, kAccurate);
EmitGuard_NullPointerException(dex_pc, object_addr);
llvm::Value* field_value;
if (field == NULL) {
PrintUnresolvedFieldWarning(field_idx);
llvm::Function* runtime_func;
if (field_jty == kObject) {
runtime_func = irb_.GetRuntime(SetObjectInstance);
} else if (field_jty == kLong || field_jty == kDouble) {
runtime_func = irb_.GetRuntime(Set64Instance);
} else {
runtime_func = irb_.GetRuntime(Set32Instance);
}
llvm::ConstantInt* field_idx_value = irb_.getInt32(field_idx);
llvm::Value* method_object_addr = EmitLoadMethodObjectAddr();
field_value = irb_.CreateCall2(runtime_func, field_idx_value,
method_object_addr);
EmitGuard_ExceptionLandingPad(dex_pc);
} else {
llvm::PointerType* field_type =
irb_.getJType(field_jty, kField)->getPointerTo();
llvm::ConstantInt* field_offset =
irb_.getPtrEquivInt(field->GetOffset().Int32Value());
llvm::Value* field_addr =
irb_.CreatePtrDisp(object_addr, field_offset, field_type);
field_value = irb_.CreateLoad(field_addr);
}
EmitStoreDalvikReg(dec_insn.vA_, field_jty, kField, field_value);
irb_.CreateBr(GetNextBasicBlock(dex_pc));
}
void MethodCompiler::EmitInsn_IPut(uint32_t dex_pc,
Instruction const* insn,
JType field_jty) {
Instruction::DecodedInstruction dec_insn(insn);
uint32_t reg_idx = dec_insn.vB_;
uint32_t field_idx = dec_insn.vC_;
Field* field = dex_cache_->GetResolvedField(field_idx);
llvm::Value* object_addr = EmitLoadDalvikReg(reg_idx, kObject, kAccurate);
EmitGuard_NullPointerException(dex_pc, object_addr);
llvm::Value* new_value = EmitLoadDalvikReg(dec_insn.vA_, field_jty, kField);
if (field == NULL) {
PrintUnresolvedFieldWarning(field_idx);
llvm::Function* runtime_func;
if (field_jty == kObject) {
runtime_func = irb_.GetRuntime(SetObjectInstance);
} else if (field_jty == kLong || field_jty == kDouble) {
runtime_func = irb_.GetRuntime(Set64Instance);
} else {
runtime_func = irb_.GetRuntime(Set32Instance);
}
llvm::Value* field_idx_value = irb_.getInt32(field_idx);
llvm::Value* method_object_addr = EmitLoadMethodObjectAddr();
irb_.CreateCall3(runtime_func, field_idx_value,
method_object_addr, new_value);
EmitGuard_ExceptionLandingPad(dex_pc);
} else {
llvm::PointerType* field_type =
irb_.getJType(field_jty, kField)->getPointerTo();
llvm::Value* field_offset =
irb_.getPtrEquivInt(field->GetOffset().Int32Value());
llvm::Value* field_addr =
irb_.CreatePtrDisp(object_addr, field_offset, field_type);
irb_.CreateStore(new_value, field_addr);
}
irb_.CreateBr(GetNextBasicBlock(dex_pc));
}
void MethodCompiler::EmitInsn_SGet(uint32_t dex_pc,
Instruction const* insn,
JType field_jty) {
// UNIMPLEMENTED(WARNING);
irb_.CreateBr(GetNextBasicBlock(dex_pc));
}
void MethodCompiler::EmitInsn_SPut(uint32_t dex_pc,
Instruction const* insn,
JType field_jty) {
// UNIMPLEMENTED(WARNING);
irb_.CreateBr(GetNextBasicBlock(dex_pc));
}
void MethodCompiler::EmitInsn_InvokeVirtual(uint32_t dex_pc,
Instruction const* insn,
bool is_range) {
// UNIMPLEMENTED(WARNING);
irb_.CreateBr(GetNextBasicBlock(dex_pc));
}
void MethodCompiler::EmitInsn_InvokeSuper(uint32_t dex_pc,
Instruction const* insn,
bool is_range) {
// UNIMPLEMENTED(WARNING);
irb_.CreateBr(GetNextBasicBlock(dex_pc));
}
void MethodCompiler::EmitInsn_InvokeDirect(uint32_t dex_pc,
Instruction const* insn,
bool is_range) {
// UNIMPLEMENTED(WARNING);
irb_.CreateBr(GetNextBasicBlock(dex_pc));
}
void MethodCompiler::EmitInsn_InvokeStatic(uint32_t dex_pc,
Instruction const* insn,
bool is_range) {
// UNIMPLEMENTED(WARNING);
irb_.CreateBr(GetNextBasicBlock(dex_pc));
}
void MethodCompiler::EmitInsn_InvokeInterface(uint32_t dex_pc,
Instruction const* insn,
bool is_range) {
// UNIMPLEMENTED(WARNING);
irb_.CreateBr(GetNextBasicBlock(dex_pc));
}
void MethodCompiler::EmitInsn_Neg(uint32_t dex_pc,
Instruction const* insn,
JType op_jty) {
Instruction::DecodedInstruction dec_insn(insn);
DCHECK(op_jty == kInt || op_jty == kLong) << op_jty;
llvm::Value* src_value = EmitLoadDalvikReg(dec_insn.vB_, op_jty, kAccurate);
llvm::Value* result_value = irb_.CreateNeg(src_value);
EmitStoreDalvikReg(dec_insn.vA_, op_jty, kAccurate, result_value);
irb_.CreateBr(GetNextBasicBlock(dex_pc));
}
void MethodCompiler::EmitInsn_Not(uint32_t dex_pc,
Instruction const* insn,
JType op_jty) {
Instruction::DecodedInstruction dec_insn(insn);
DCHECK(op_jty == kInt || op_jty == kLong) << op_jty;
llvm::Value* src_value = EmitLoadDalvikReg(dec_insn.vB_, op_jty, kAccurate);
llvm::Value* result_value =
irb_.CreateXor(src_value, static_cast<uint64_t>(-1));
EmitStoreDalvikReg(dec_insn.vA_, op_jty, kAccurate, result_value);
irb_.CreateBr(GetNextBasicBlock(dex_pc));
}
void MethodCompiler::EmitInsn_SExt(uint32_t dex_pc,
Instruction const* insn) {
Instruction::DecodedInstruction dec_insn(insn);
llvm::Value* src_value = EmitLoadDalvikReg(dec_insn.vB_, kInt, kAccurate);
llvm::Value* result_value = irb_.CreateSExt(src_value, irb_.getJLongTy());
EmitStoreDalvikReg(dec_insn.vA_, kLong, kAccurate, result_value);
irb_.CreateBr(GetNextBasicBlock(dex_pc));
}
void MethodCompiler::EmitInsn_Trunc(uint32_t dex_pc,
Instruction const* insn) {
Instruction::DecodedInstruction dec_insn(insn);
llvm::Value* src_value = EmitLoadDalvikReg(dec_insn.vB_, kLong, kAccurate);
llvm::Value* result_value = irb_.CreateTrunc(src_value, irb_.getJIntTy());
EmitStoreDalvikReg(dec_insn.vA_, kInt, kAccurate, result_value);
irb_.CreateBr(GetNextBasicBlock(dex_pc));
}
void MethodCompiler::EmitInsn_TruncAndSExt(uint32_t dex_pc,
Instruction const* insn,
unsigned N) {
Instruction::DecodedInstruction dec_insn(insn);
llvm::Value* src_value = EmitLoadDalvikReg(dec_insn.vB_, kInt, kAccurate);
llvm::Value* trunc_value =
irb_.CreateTrunc(src_value, llvm::Type::getIntNTy(*context_, N));
llvm::Value* result_value = irb_.CreateSExt(trunc_value, irb_.getJIntTy());
EmitStoreDalvikReg(dec_insn.vA_, kInt, kAccurate, result_value);
irb_.CreateBr(GetNextBasicBlock(dex_pc));
}
void MethodCompiler::EmitInsn_TruncAndZExt(uint32_t dex_pc,
Instruction const* insn,
unsigned N) {
Instruction::DecodedInstruction dec_insn(insn);
llvm::Value* src_value = EmitLoadDalvikReg(dec_insn.vB_, kInt, kAccurate);
llvm::Value* trunc_value =
irb_.CreateTrunc(src_value, llvm::Type::getIntNTy(*context_, N));
llvm::Value* result_value = irb_.CreateZExt(trunc_value, irb_.getJIntTy());
EmitStoreDalvikReg(dec_insn.vA_, kInt, kAccurate, result_value);
irb_.CreateBr(GetNextBasicBlock(dex_pc));
}
void MethodCompiler::EmitInsn_FNeg(uint32_t dex_pc,
Instruction const* insn,
JType op_jty) {
Instruction::DecodedInstruction dec_insn(insn);
DCHECK(op_jty == kFloat || op_jty == kDouble) << op_jty;
llvm::Value* src_value = EmitLoadDalvikReg(dec_insn.vB_, op_jty, kAccurate);
llvm::Value* result_value = irb_.CreateFNeg(src_value);
EmitStoreDalvikReg(dec_insn.vA_, op_jty, kAccurate, result_value);
irb_.CreateBr(GetNextBasicBlock(dex_pc));
}
void MethodCompiler::EmitInsn_IntToFP(uint32_t dex_pc,
Instruction const* insn,
JType src_jty,
JType dest_jty) {
Instruction::DecodedInstruction dec_insn(insn);
DCHECK(src_jty == kInt || src_jty == kLong) << src_jty;
DCHECK(dest_jty == kFloat || dest_jty == kDouble) << dest_jty;
llvm::Value* src_value = EmitLoadDalvikReg(dec_insn.vB_, src_jty, kAccurate);
llvm::Type* dest_type = irb_.getJType(dest_jty, kAccurate);
llvm::Value* dest_value = irb_.CreateSIToFP(src_value, dest_type);
EmitStoreDalvikReg(dec_insn.vA_, dest_jty, kAccurate, dest_value);
irb_.CreateBr(GetNextBasicBlock(dex_pc));
}
void MethodCompiler::EmitInsn_FPToInt(uint32_t dex_pc,
Instruction const* insn,
JType src_jty,
JType dest_jty) {
Instruction::DecodedInstruction dec_insn(insn);
DCHECK(src_jty == kFloat || src_jty == kDouble) << src_jty;
DCHECK(dest_jty == kInt || dest_jty == kLong) << dest_jty;
llvm::Value* src_value = EmitLoadDalvikReg(dec_insn.vB_, src_jty, kAccurate);
llvm::Type* dest_type = irb_.getJType(dest_jty, kAccurate);
llvm::Value* dest_value = irb_.CreateFPToSI(src_value, dest_type);
EmitStoreDalvikReg(dec_insn.vA_, dest_jty, kAccurate, dest_value);
irb_.CreateBr(GetNextBasicBlock(dex_pc));
}
void MethodCompiler::EmitInsn_FExt(uint32_t dex_pc,
Instruction const* insn) {
Instruction::DecodedInstruction dec_insn(insn);
llvm::Value* src_value = EmitLoadDalvikReg(dec_insn.vB_, kFloat, kAccurate);
llvm::Value* result_value = irb_.CreateFPExt(src_value, irb_.getJDoubleTy());
EmitStoreDalvikReg(dec_insn.vA_, kDouble, kAccurate, result_value);
irb_.CreateBr(GetNextBasicBlock(dex_pc));
}
void MethodCompiler::EmitInsn_FTrunc(uint32_t dex_pc,
Instruction const* insn) {
Instruction::DecodedInstruction dec_insn(insn);
llvm::Value* src_value = EmitLoadDalvikReg(dec_insn.vB_, kDouble, kAccurate);
llvm::Value* result_value = irb_.CreateFPTrunc(src_value, irb_.getJFloatTy());
EmitStoreDalvikReg(dec_insn.vA_, kFloat, kAccurate, result_value);
irb_.CreateBr(GetNextBasicBlock(dex_pc));
}
void MethodCompiler::EmitInsn_IntArithm(uint32_t dex_pc,
Instruction const* insn,
IntArithmKind arithm,
JType op_jty,
bool is_2addr) {
Instruction::DecodedInstruction dec_insn(insn);
DCHECK(op_jty == kInt || op_jty == kLong) << op_jty;
llvm::Value* src1_value;
llvm::Value* src2_value;
if (is_2addr) {
src1_value = EmitLoadDalvikReg(dec_insn.vA_, op_jty, kAccurate);
src2_value = EmitLoadDalvikReg(dec_insn.vB_, op_jty, kAccurate);
} else {
src1_value = EmitLoadDalvikReg(dec_insn.vB_, op_jty, kAccurate);
src2_value = EmitLoadDalvikReg(dec_insn.vC_, op_jty, kAccurate);
}
llvm::Value* result_value =
EmitIntArithmResultComputation(dex_pc, src1_value, src2_value,
arithm, op_jty);
EmitStoreDalvikReg(dec_insn.vA_, op_jty, kAccurate, result_value);
irb_.CreateBr(GetNextBasicBlock(dex_pc));
}
void MethodCompiler::EmitInsn_IntArithmImmediate(uint32_t dex_pc,
Instruction const* insn,
IntArithmKind arithm) {
Instruction::DecodedInstruction dec_insn(insn);
llvm::Value* src_value = EmitLoadDalvikReg(dec_insn.vB_, kInt, kAccurate);
llvm::Value* imm_value = irb_.getInt32(dec_insn.vC_);
llvm::Value* result_value =
EmitIntArithmResultComputation(dex_pc, src_value, imm_value, arithm, kInt);
EmitStoreDalvikReg(dec_insn.vA_, kInt, kAccurate, result_value);
irb_.CreateBr(GetNextBasicBlock(dex_pc));
}
llvm::Value*
MethodCompiler::EmitIntArithmResultComputation(uint32_t dex_pc,
llvm::Value* lhs,
llvm::Value* rhs,
IntArithmKind arithm,
JType op_jty) {
DCHECK(op_jty == kInt || op_jty == kLong) << op_jty;
switch (arithm) {
case kIntArithm_Add:
return irb_.CreateAdd(lhs, rhs);
case kIntArithm_Sub:
return irb_.CreateSub(lhs, rhs);
case kIntArithm_Mul:
return irb_.CreateMul(lhs, rhs);
case kIntArithm_Div:
EmitGuard_DivZeroException(dex_pc, rhs, op_jty);
return irb_.CreateSDiv(lhs, rhs);
case kIntArithm_Rem:
EmitGuard_DivZeroException(dex_pc, rhs, op_jty);
return irb_.CreateSRem(lhs, rhs);
case kIntArithm_And:
return irb_.CreateAnd(lhs, rhs);
case kIntArithm_Or:
return irb_.CreateOr(lhs, rhs);
case kIntArithm_Xor:
return irb_.CreateXor(lhs, rhs);
case kIntArithm_Shl:
if (op_jty == kLong) {
return irb_.CreateShl(lhs, irb_.CreateAnd(rhs, 0x3f));
} else {
return irb_.CreateShl(lhs, irb_.CreateAnd(rhs, 0x1f));
}
case kIntArithm_Shr:
if (op_jty == kLong) {
return irb_.CreateAShr(lhs, irb_.CreateAnd(rhs, 0x3f));
} else {
return irb_.CreateAShr(lhs, irb_.CreateAnd(rhs, 0x1f));
}
case kIntArithm_UShr:
if (op_jty == kLong) {
return irb_.CreateLShr(lhs, irb_.CreateAnd(rhs, 0x3f));
} else {
return irb_.CreateLShr(lhs, irb_.CreateAnd(rhs, 0x1f));
}
default:
LOG(FATAL) << "Unknown integer arithmetic kind: " << arithm;
return NULL;
}
}
void MethodCompiler::EmitInsn_RSubImmediate(uint32_t dex_pc,
Instruction const* insn) {
Instruction::DecodedInstruction dec_insn(insn);
llvm::Value* src_value = EmitLoadDalvikReg(dec_insn.vB_, kInt, kAccurate);
llvm::Value* imm_value = irb_.getInt32(dec_insn.vC_);
llvm::Value* result_value = irb_.CreateSub(imm_value, src_value);
EmitStoreDalvikReg(dec_insn.vA_, kInt, kAccurate, result_value);
irb_.CreateBr(GetNextBasicBlock(dex_pc));
}
void MethodCompiler::EmitInsn_FPArithm(uint32_t dex_pc,
Instruction const* insn,
FPArithmKind arithm,
JType op_jty,
bool is_2addr) {
Instruction::DecodedInstruction dec_insn(insn);
DCHECK(op_jty == kFloat || op_jty == kDouble) << op_jty;
llvm::Value* src1_value;
llvm::Value* src2_value;
if (is_2addr) {
src1_value = EmitLoadDalvikReg(dec_insn.vA_, op_jty, kAccurate);
src2_value = EmitLoadDalvikReg(dec_insn.vB_, op_jty, kAccurate);
} else {
src1_value = EmitLoadDalvikReg(dec_insn.vB_, op_jty, kAccurate);
src2_value = EmitLoadDalvikReg(dec_insn.vC_, op_jty, kAccurate);
}
llvm::Value* result_value =
EmitFPArithmResultComputation(dex_pc, src1_value, src2_value, arithm);
EmitStoreDalvikReg(dec_insn.vA_, op_jty, kAccurate, result_value);
irb_.CreateBr(GetNextBasicBlock(dex_pc));
}
llvm::Value*
MethodCompiler::EmitFPArithmResultComputation(uint32_t dex_pc,
llvm::Value *lhs,
llvm::Value *rhs,
FPArithmKind arithm) {
switch (arithm) {
case kFPArithm_Add:
return irb_.CreateFAdd(lhs, rhs);
case kFPArithm_Sub:
return irb_.CreateFSub(lhs, rhs);
case kFPArithm_Mul:
return irb_.CreateFMul(lhs, rhs);
case kFPArithm_Div:
return irb_.CreateFDiv(lhs, rhs);
case kFPArithm_Rem:
return irb_.CreateFRem(lhs, rhs);
default:
LOG(FATAL) << "Unknown floating-point arithmetic kind: " << arithm;
return NULL;
}
}
void MethodCompiler::EmitGuard_DivZeroException(uint32_t dex_pc,
llvm::Value* denominator,
JType op_jty) {
DCHECK(op_jty == kInt || op_jty == kLong) << op_jty;
llvm::Constant* zero = irb_.getJZero(op_jty);
llvm::Value* equal_zero = irb_.CreateICmpEQ(denominator, zero);
llvm::BasicBlock* block_exception = CreateBasicBlockWithDexPC(dex_pc, "div0");
llvm::BasicBlock* block_continue = CreateBasicBlockWithDexPC(dex_pc, "cont");
irb_.CreateCondBr(equal_zero, block_exception, block_continue);
irb_.SetInsertPoint(block_exception);
irb_.CreateCall(irb_.GetRuntime(ThrowDivZeroException));
EmitBranchExceptionLandingPad(dex_pc);
irb_.SetInsertPoint(block_continue);
}
void MethodCompiler::EmitGuard_NullPointerException(uint32_t dex_pc,
llvm::Value* object) {
llvm::Value* equal_null = irb_.CreateICmpEQ(object, irb_.getJNull());
llvm::BasicBlock* block_exception =
CreateBasicBlockWithDexPC(dex_pc, "nullp");
llvm::BasicBlock* block_continue =
CreateBasicBlockWithDexPC(dex_pc, "cont");
irb_.CreateCondBr(equal_null, block_exception, block_continue);
irb_.SetInsertPoint(block_exception);
irb_.CreateCall(irb_.GetRuntime(ThrowNullPointerException));
EmitBranchExceptionLandingPad(dex_pc);
irb_.SetInsertPoint(block_continue);
}
llvm::Value* MethodCompiler::EmitLoadDexCacheAddr(MemberOffset offset) {
llvm::Value* method_object_addr = EmitLoadMethodObjectAddr();
llvm::Value* dex_cache_offset_value =
irb_.getPtrEquivInt(offset.Int32Value());
llvm::Value* dex_cache_field_addr =
irb_.CreatePtrDisp(method_object_addr, dex_cache_offset_value,
irb_.getJObjectTy()->getPointerTo());
return irb_.CreateLoad(dex_cache_field_addr);
}
void MethodCompiler::
EmitLoadDexCacheCodeAndDirectMethodFieldAddr(llvm::Value*& code_field_addr,
llvm::Value*& method_field_addr,
uint32_t method_idx) {
llvm::Value* cadms_dex_cache_addr =
EmitLoadDexCacheAddr(Method::GetDexCacheCodeAndDirectMethodsOffset());
llvm::Value* code_index_value =
irb_.getPtrEquivInt(CodeAndDirectMethods::CodeIndex(method_idx));
llvm::Value* method_index_value =
irb_.getPtrEquivInt(CodeAndDirectMethods::MethodIndex(method_idx));
// Return the field address
code_field_addr = EmitArrayGEP(cadms_dex_cache_addr, code_index_value,
irb_.getJIntTy());
method_field_addr = EmitArrayGEP(cadms_dex_cache_addr, method_index_value,
irb_.getJIntTy());
}
llvm::Value* MethodCompiler::
EmitLoadDexCacheStaticStorageFieldAddr(uint32_t type_idx) {
llvm::Value* static_storage_dex_cache_addr =
EmitLoadDexCacheAddr(Method::DexCacheInitializedStaticStorageOffset());
llvm::Value* type_idx_value = irb_.getPtrEquivInt(type_idx);
return EmitArrayGEP(static_storage_dex_cache_addr, type_idx_value,
irb_.getJObjectTy());
}
llvm::Value* MethodCompiler::
EmitLoadDexCacheResolvedTypeFieldAddr(uint32_t type_idx) {
llvm::Value* resolved_type_dex_cache_addr =
EmitLoadDexCacheAddr(Method::DexCacheResolvedTypesOffset());
llvm::Value* type_idx_value = irb_.getPtrEquivInt(type_idx);
return EmitArrayGEP(resolved_type_dex_cache_addr, type_idx_value,
irb_.getJObjectTy());
}
llvm::Value* MethodCompiler::
EmitLoadDexCacheStringFieldAddr(uint32_t string_idx) {
llvm::Value* string_dex_cache_addr =
EmitLoadDexCacheAddr(Method::DexCacheStringsOffset());
llvm::Value* string_idx_value = irb_.getPtrEquivInt(string_idx);
return EmitArrayGEP(string_dex_cache_addr, string_idx_value,
irb_.getJObjectTy());
}
CompiledMethod *MethodCompiler::Compile() {
// Code generation
CreateFunction();
EmitPrologue();
EmitInstructions();
EmitPrologueLastBranch();
// Verify the generated bitcode
llvm::verifyFunction(*func_, llvm::PrintMessageAction);
// Delete the inferred register category map (won't be used anymore)
method_->ResetInferredRegCategoryMap();
return new CompiledMethod(insn_set_, func_);
}
llvm::Value* MethodCompiler::EmitLoadMethodObjectAddr() {
return func_->arg_begin();
}
void MethodCompiler::EmitBranchExceptionLandingPad(uint32_t dex_pc) {
if (llvm::BasicBlock* lpad = GetLandingPadBasicBlock(dex_pc)) {
irb_.CreateBr(lpad);
} else {
irb_.CreateBr(GetUnwindBasicBlock());
}
}