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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.
*/
#ifndef ART_COMPILER_DEX_PASS_DRIVER_ME_H_
#define ART_COMPILER_DEX_PASS_DRIVER_ME_H_
#include "bb_optimizations.h"
#include "dataflow_iterator.h"
#include "dataflow_iterator-inl.h"
#include "pass_driver.h"
#include "pass_me.h"
namespace art {
template <typename PassDriverType>
class PassDriverME: public PassDriver<PassDriverType> {
public:
explicit PassDriverME(CompilationUnit* cu)
: pass_me_data_holder_(), dump_cfg_folder_("/sdcard/") {
pass_me_data_holder_.bb = nullptr;
pass_me_data_holder_.c_unit = cu;
}
~PassDriverME() {
}
void DispatchPass(const Pass* pass) {
VLOG(compiler) << "Dispatching " << pass->GetName();
const PassME* me_pass = down_cast<const PassME*>(pass);
DataFlowAnalysisMode mode = me_pass->GetTraversal();
switch (mode) {
case kPreOrderDFSTraversal:
DoWalkBasicBlocks<PreOrderDfsIterator>(&pass_me_data_holder_, me_pass);
break;
case kRepeatingPreOrderDFSTraversal:
DoWalkBasicBlocks<RepeatingPreOrderDfsIterator>(&pass_me_data_holder_, me_pass);
break;
case kRepeatingPostOrderDFSTraversal:
DoWalkBasicBlocks<RepeatingPostOrderDfsIterator>(&pass_me_data_holder_, me_pass);
break;
case kReversePostOrderDFSTraversal:
DoWalkBasicBlocks<ReversePostOrderDfsIterator>(&pass_me_data_holder_, me_pass);
break;
case kRepeatingReversePostOrderDFSTraversal:
DoWalkBasicBlocks<RepeatingReversePostOrderDfsIterator>(&pass_me_data_holder_, me_pass);
break;
case kPostOrderDOMTraversal:
DoWalkBasicBlocks<PostOrderDOMIterator>(&pass_me_data_holder_, me_pass);
break;
case kAllNodes:
DoWalkBasicBlocks<AllNodesIterator>(&pass_me_data_holder_, me_pass);
break;
case kNoNodes:
break;
default:
LOG(FATAL) << "Iterator mode not handled in dispatcher: " << mode;
break;
}
}
bool RunPass(const Pass* pass, bool time_split) {
// Paranoid: c_unit and pass cannot be nullptr, and the pass should have a name
DCHECK(pass != nullptr);
DCHECK(pass->GetName() != nullptr && pass->GetName()[0] != 0);
CompilationUnit* c_unit = pass_me_data_holder_.c_unit;
DCHECK(c_unit != nullptr);
// Do we perform a time split
if (time_split) {
c_unit->NewTimingSplit(pass->GetName());
}
// Check the pass gate first.
bool should_apply_pass = pass->Gate(&pass_me_data_holder_);
if (should_apply_pass) {
bool old_print_pass = c_unit->print_pass;
c_unit->print_pass = PassDriver<PassDriverType>::default_print_passes_;
const char* print_pass_list = PassDriver<PassDriverType>::print_pass_list_.c_str();
if (print_pass_list != nullptr && strstr(print_pass_list, pass->GetName()) != nullptr) {
c_unit->print_pass = true;
}
// Applying the pass: first start, doWork, and end calls.
this->ApplyPass(&pass_me_data_holder_, pass);
bool should_dump = ((c_unit->enable_debug & (1 << kDebugDumpCFG)) != 0);
const char* dump_pass_list = PassDriver<PassDriverType>::dump_pass_list_.c_str();
if (dump_pass_list != nullptr) {
bool found = strstr(dump_pass_list, pass->GetName());
should_dump = (should_dump || found);
}
if (should_dump) {
// Do we want to log it?
if ((c_unit->enable_debug& (1 << kDebugDumpCFG)) != 0) {
// Do we have a pass folder?
const PassME* me_pass = (down_cast<const PassME*>(pass));
const char* passFolder = me_pass->GetDumpCFGFolder();
DCHECK(passFolder != nullptr);
if (passFolder[0] != 0) {
// Create directory prefix.
std::string prefix = GetDumpCFGFolder();
prefix += passFolder;
prefix += "/";
c_unit->mir_graph->DumpCFG(prefix.c_str(), false);
}
}
}
c_unit->print_pass = old_print_pass;
}
// If the pass gate passed, we can declare success.
return should_apply_pass;
}
const char* GetDumpCFGFolder() const {
return dump_cfg_folder_;
}
protected:
/** @brief The data holder that contains data needed for the PassDriverME. */
PassMEDataHolder pass_me_data_holder_;
/** @brief Dump CFG base folder: where is the base folder for dumping CFGs. */
const char* dump_cfg_folder_;
static void DoWalkBasicBlocks(PassMEDataHolder* data, const PassME* pass,
DataflowIterator* iterator) {
// Paranoid: Check the iterator before walking the BasicBlocks.
DCHECK(iterator != nullptr);
bool change = false;
for (BasicBlock* bb = iterator->Next(change); bb != nullptr; bb = iterator->Next(change)) {
data->bb = bb;
change = pass->Worker(data);
}
}
template <typename Iterator>
inline static void DoWalkBasicBlocks(PassMEDataHolder* data, const PassME* pass) {
DCHECK(data != nullptr);
CompilationUnit* c_unit = data->c_unit;
DCHECK(c_unit != nullptr);
Iterator iterator(c_unit->mir_graph.get());
DoWalkBasicBlocks(data, pass, &iterator);
}
};
} // namespace art
#endif // ART_COMPILER_DEX_PASS_DRIVER_ME_H_
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