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/*
* Copyright (C) 2023 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 "profiling_info_builder.h"
#include "art_method-inl.h"
#include "code_generator.h"
#include "driver/compiler_options.h"
#include "dex/code_item_accessors-inl.h"
#include "inliner.h"
#include "jit/profiling_info.h"
#include "optimizing_compiler_stats.h"
#include "scoped_thread_state_change-inl.h"
namespace art HIDDEN {
void ProfilingInfoBuilder::Run() {
DCHECK_EQ(GetGraph()->GetProfilingInfo(), nullptr);
// Order does not matter.
for (HBasicBlock* block : GetGraph()->GetReversePostOrder()) {
// No need to visit the phis.
VisitNonPhiInstructions(block);
}
ScopedObjectAccess soa(Thread::Current());
GetGraph()->SetProfilingInfo(
ProfilingInfo::Create(soa.Self(), GetGraph()->GetArtMethod(), inline_caches_));
}
uint32_t ProfilingInfoBuilder::EncodeInlinedDexPc(const HInliner* inliner,
const CompilerOptions& compiler_options,
HInvoke* invoke) {
DCHECK(inliner->GetCallerEnvironment() != nullptr);
DCHECK(inliner->GetParent() != nullptr);
std::vector<uint32_t> temp_vector;
temp_vector.push_back(invoke->GetDexPc());
while (inliner->GetCallerEnvironment() != nullptr) {
temp_vector.push_back(inliner->GetCallerEnvironment()->GetDexPc());
inliner = inliner->GetParent();
}
DCHECK_EQ(inliner->GetOutermostGraph(), inliner->GetGraph());
return InlineCache::EncodeDexPc(
inliner->GetOutermostGraph()->GetArtMethod(),
temp_vector,
compiler_options.GetInlineMaxCodeUnits());
}
static uint32_t EncodeDexPc(HInvoke* invoke, const CompilerOptions& compiler_options) {
std::vector<uint32_t> dex_pcs;
ArtMethod* outer_method = nullptr;
for (HEnvironment* environment = invoke->GetEnvironment();
environment != nullptr;
environment = environment->GetParent()) {
outer_method = environment->GetMethod();
dex_pcs.push_back(environment->GetDexPc());
}
ScopedObjectAccess soa(Thread::Current());
return InlineCache::EncodeDexPc(
outer_method,
dex_pcs,
compiler_options.GetInlineMaxCodeUnits());
}
void ProfilingInfoBuilder::HandleInvoke(HInvoke* invoke) {
if (IsInlineCacheUseful(invoke, codegen_)) {
uint32_t dex_pc = EncodeDexPc(invoke, compiler_options_);
if (dex_pc != kNoDexPc) {
inline_caches_.push_back(dex_pc);
} else {
ScopedObjectAccess soa(Thread::Current());
LOG(WARNING) << "Could not encode dex pc for "
<< invoke->GetResolvedMethod()->PrettyMethod();
}
}
}
void ProfilingInfoBuilder::VisitInvokeInterface(HInvokeInterface* invoke) {
HandleInvoke(invoke);
}
void ProfilingInfoBuilder::VisitInvokeVirtual(HInvokeVirtual* invoke) {
HandleInvoke(invoke);
}
bool ProfilingInfoBuilder::IsInlineCacheUseful(HInvoke* invoke, CodeGenerator* codegen) {
DCHECK(invoke->IsInvokeVirtual() || invoke->IsInvokeInterface());
if (codegen->IsImplementedIntrinsic(invoke)) {
return false;
}
if (!invoke->GetBlock()->GetGraph()->IsCompilingBaseline()) {
return false;
}
if (Runtime::Current()->IsAotCompiler()) {
return false;
}
if (invoke->InputAt(0)->GetReferenceTypeInfo().IsExact()) {
return false;
}
if (invoke->GetResolvedMethod() != nullptr) {
ScopedObjectAccess soa(Thread::Current());
if (invoke->GetResolvedMethod()->IsFinal() ||
invoke->GetResolvedMethod()->GetDeclaringClass()->IsFinal()) {
return false;
}
}
return true;
}
InlineCache* ProfilingInfoBuilder::GetInlineCache(ProfilingInfo* info,
const CompilerOptions& compiler_options,
HInvoke* instruction) {
ScopedObjectAccess soa(Thread::Current());
uint32_t dex_pc = EncodeDexPc(instruction, compiler_options);
if (dex_pc == kNoDexPc) {
return nullptr;
}
return info->GetInlineCache(dex_pc);
}
} // namespace art
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