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/*
* Copyright (C) 2014 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 "compiler.h"
#include "base/logging.h"
#include "dex/quick/quick_compiler.h"
#include "driver/compiler_driver.h"
#include "llvm/llvm_compiler.h"
#include "optimizing/optimizing_compiler.h"
namespace art {
#ifdef ART_SEA_IR_MODE
constexpr bool kCanUseSeaIR = true;
#else
constexpr bool kCanUseSeaIR = false;
#endif
extern "C" art::CompiledMethod* SeaIrCompileMethod(const art::DexFile::CodeItem* code_item ATTRIBUTE_UNUSED,
uint32_t access_flags ATTRIBUTE_UNUSED,
art::InvokeType invoke_type ATTRIBUTE_UNUSED,
uint16_t class_def_idx ATTRIBUTE_UNUSED,
uint32_t method_idx ATTRIBUTE_UNUSED,
jobject class_loader ATTRIBUTE_UNUSED,
const art::DexFile& dex_file ATTRIBUTE_UNUSED)
#ifdef ART_SEA_IR_MODE
; // NOLINT(whitespace/semicolon)
#else
{
UNREACHABLE();
}
#endif
CompiledMethod* Compiler::TryCompileWithSeaIR(const art::DexFile::CodeItem* code_item,
uint32_t access_flags,
art::InvokeType invoke_type,
uint16_t class_def_idx,
uint32_t method_idx,
jobject class_loader,
const art::DexFile& dex_file) {
bool use_sea = kCanUseSeaIR &&
(std::string::npos != PrettyMethod(method_idx, dex_file).find("fibonacci"));
if (use_sea) {
LOG(INFO) << "Using SEA IR to compile..." << std::endl;
return SeaIrCompileMethod(code_item,
access_flags,
invoke_type,
class_def_idx,
method_idx,
class_loader,
dex_file);
}
return nullptr;
}
Compiler* Compiler::Create(CompilerDriver* driver, Compiler::Kind kind) {
switch (kind) {
case kQuick:
return CreateQuickCompiler(driver);
case kOptimizing:
return CreateOptimizingCompiler(driver);
case kPortable:
{
Compiler* compiler = CreateLLVMCompiler(driver);
CHECK(compiler != nullptr) << "Portable compiler not compiled";
return compiler;
}
default:
LOG(FATAL) << "UNREACHABLE";
UNREACHABLE();
}
}
bool Compiler::IsPathologicalCase(const DexFile::CodeItem& code_item,
uint32_t method_idx,
const DexFile& dex_file) {
/*
* Skip compilation for pathologically large methods - either by instruction count or num vregs.
* Dalvik uses 16-bit uints for instruction and register counts. We'll limit to a quarter
* of that, which also guarantees we cannot overflow our 16-bit internal Quick SSA name space.
*/
if (code_item.insns_size_in_code_units_ >= UINT16_MAX / 4) {
LOG(INFO) << "Method exceeds compiler instruction limit: "
<< code_item.insns_size_in_code_units_
<< " in " << PrettyMethod(method_idx, dex_file);
return true;
}
if (code_item.registers_size_ >= UINT16_MAX / 4) {
LOG(INFO) << "Method exceeds compiler virtual register limit: "
<< code_item.registers_size_ << " in " << PrettyMethod(method_idx, dex_file);
return true;
}
return false;
}
} // namespace art
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