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-rw-r--r--compiler/optimizing/inliner.cc142
1 files changed, 120 insertions, 22 deletions
diff --git a/compiler/optimizing/inliner.cc b/compiler/optimizing/inliner.cc
index 2e79df1b84..35109fa538 100644
--- a/compiler/optimizing/inliner.cc
+++ b/compiler/optimizing/inliner.cc
@@ -296,9 +296,29 @@ bool HInliner::TryInline(HInvoke* invoke_instruction) {
return false;
}
+HInstanceFieldGet* HInliner::BuildGetReceiverClass(ClassLinker* class_linker,
+ HInstruction* receiver,
+ uint32_t dex_pc) const {
+ ArtField* field = class_linker->GetClassRoot(ClassLinker::kJavaLangObject)->GetInstanceField(0);
+ DCHECK_EQ(std::string(field->GetName()), "shadow$_klass_");
+ return new (graph_->GetArena()) HInstanceFieldGet(
+ receiver,
+ Primitive::kPrimNot,
+ field->GetOffset(),
+ field->IsVolatile(),
+ field->GetDexFieldIndex(),
+ field->GetDeclaringClass()->GetDexClassDefIndex(),
+ *field->GetDexFile(),
+ handles_->NewHandle(field->GetDexCache()),
+ dex_pc);
+}
+
bool HInliner::TryInlineMonomorphicCall(HInvoke* invoke_instruction,
ArtMethod* resolved_method,
const InlineCache& ic) {
+ DCHECK(invoke_instruction->IsInvokeVirtual() || invoke_instruction->IsInvokeInterface())
+ << invoke_instruction->DebugName();
+
const DexFile& caller_dex_file = *caller_compilation_unit_.GetDexFile();
uint32_t class_index = FindClassIndexIn(ic.GetMonomorphicType(), caller_dex_file);
if (class_index == DexFile::kDexNoIndex) {
@@ -328,18 +348,8 @@ bool HInliner::TryInlineMonomorphicCall(HInvoke* invoke_instruction,
}
// We successfully inlined, now add a guard.
- ArtField* field = class_linker->GetClassRoot(ClassLinker::kJavaLangObject)->GetInstanceField(0);
- DCHECK_EQ(std::string(field->GetName()), "shadow$_klass_");
- HInstanceFieldGet* field_get = new (graph_->GetArena()) HInstanceFieldGet(
- receiver,
- Primitive::kPrimNot,
- field->GetOffset(),
- field->IsVolatile(),
- field->GetDexFieldIndex(),
- field->GetDeclaringClass()->GetDexClassDefIndex(),
- *field->GetDexFile(),
- handles_->NewHandle(field->GetDexCache()),
- invoke_instruction->GetDexPc());
+ HInstanceFieldGet* receiver_class = BuildGetReceiverClass(
+ class_linker, receiver, invoke_instruction->GetDexPc());
bool is_referrer =
(ic.GetMonomorphicType() == outermost_graph_->GetArtMethod()->GetDeclaringClass());
@@ -351,16 +361,16 @@ bool HInliner::TryInlineMonomorphicCall(HInvoke* invoke_instruction,
/* needs_access_check */ false,
/* is_in_dex_cache */ true);
- HNotEqual* compare = new (graph_->GetArena()) HNotEqual(load_class, field_get);
+ HNotEqual* compare = new (graph_->GetArena()) HNotEqual(load_class, receiver_class);
HDeoptimize* deoptimize = new (graph_->GetArena()) HDeoptimize(
compare, invoke_instruction->GetDexPc());
// TODO: Extend reference type propagation to understand the guard.
if (cursor != nullptr) {
- bb_cursor->InsertInstructionAfter(field_get, cursor);
+ bb_cursor->InsertInstructionAfter(receiver_class, cursor);
} else {
- bb_cursor->InsertInstructionBefore(field_get, bb_cursor->GetFirstInstruction());
+ bb_cursor->InsertInstructionBefore(receiver_class, bb_cursor->GetFirstInstruction());
}
- bb_cursor->InsertInstructionAfter(load_class, field_get);
+ bb_cursor->InsertInstructionAfter(load_class, receiver_class);
bb_cursor->InsertInstructionAfter(compare, load_class);
bb_cursor->InsertInstructionAfter(deoptimize, compare);
deoptimize->CopyEnvironmentFrom(invoke_instruction->GetEnvironment());
@@ -374,13 +384,101 @@ bool HInliner::TryInlineMonomorphicCall(HInvoke* invoke_instruction,
return true;
}
-bool HInliner::TryInlinePolymorphicCall(HInvoke* invoke_instruction ATTRIBUTE_UNUSED,
+bool HInliner::TryInlinePolymorphicCall(HInvoke* invoke_instruction,
ArtMethod* resolved_method,
- const InlineCache& ic ATTRIBUTE_UNUSED) {
- // TODO
- VLOG(compiler) << "Unimplemented polymorphic inlining for "
- << PrettyMethod(resolved_method);
- return false;
+ const InlineCache& ic) {
+ DCHECK(invoke_instruction->IsInvokeVirtual() || invoke_instruction->IsInvokeInterface())
+ << invoke_instruction->DebugName();
+ // This optimization only works under JIT for now.
+ DCHECK(Runtime::Current()->UseJit());
+ if (graph_->GetInstructionSet() == kMips || graph_->GetInstructionSet() == kMips64) {
+ // TODO: Support HClassTableGet for mips and mips64.
+ return false;
+ }
+ ClassLinker* class_linker = caller_compilation_unit_.GetClassLinker();
+ size_t pointer_size = class_linker->GetImagePointerSize();
+
+ DCHECK(resolved_method != nullptr);
+ ArtMethod* actual_method = nullptr;
+ // Check whether we are actually calling the same method among
+ // the different types seen.
+ for (size_t i = 0; i < InlineCache::kIndividualCacheSize; ++i) {
+ if (ic.GetTypeAt(i) == nullptr) {
+ break;
+ }
+ ArtMethod* new_method = nullptr;
+ if (invoke_instruction->IsInvokeInterface()) {
+ new_method = ic.GetTypeAt(i)->FindVirtualMethodForInterface(
+ resolved_method, pointer_size);
+ } else {
+ DCHECK(invoke_instruction->IsInvokeVirtual());
+ new_method = ic.GetTypeAt(i)->FindVirtualMethodForVirtual(
+ resolved_method, pointer_size);
+ }
+ if (actual_method == nullptr) {
+ actual_method = new_method;
+ } else if (actual_method != new_method) {
+ // Different methods, bailout.
+ return false;
+ }
+ }
+
+ HInstruction* receiver = invoke_instruction->InputAt(0);
+ HInstruction* cursor = invoke_instruction->GetPrevious();
+ HBasicBlock* bb_cursor = invoke_instruction->GetBlock();
+
+ if (!TryInline(invoke_instruction, actual_method, /* do_rtp */ false)) {
+ return false;
+ }
+
+ // We successfully inlined, now add a guard.
+ HInstanceFieldGet* receiver_class = BuildGetReceiverClass(
+ class_linker, receiver, invoke_instruction->GetDexPc());
+
+ size_t method_offset = invoke_instruction->IsInvokeVirtual()
+ ? actual_method->GetVtableIndex()
+ : invoke_instruction->AsInvokeInterface()->GetImtIndex();
+
+ Primitive::Type type = Is64BitInstructionSet(graph_->GetInstructionSet())
+ ? Primitive::kPrimLong
+ : Primitive::kPrimInt;
+ HClassTableGet* class_table_get = new (graph_->GetArena()) HClassTableGet(
+ receiver_class,
+ type,
+ invoke_instruction->IsInvokeVirtual() ? HClassTableGet::kVTable : HClassTableGet::kIMTable,
+ method_offset,
+ invoke_instruction->GetDexPc());
+
+ HConstant* constant;
+ if (type == Primitive::kPrimLong) {
+ constant = graph_->GetLongConstant(
+ reinterpret_cast<intptr_t>(actual_method), invoke_instruction->GetDexPc());
+ } else {
+ constant = graph_->GetIntConstant(
+ reinterpret_cast<intptr_t>(actual_method), invoke_instruction->GetDexPc());
+ }
+
+ HNotEqual* compare = new (graph_->GetArena()) HNotEqual(class_table_get, constant);
+ HDeoptimize* deoptimize = new (graph_->GetArena()) HDeoptimize(
+ compare, invoke_instruction->GetDexPc());
+ // TODO: Extend reference type propagation to understand the guard.
+ if (cursor != nullptr) {
+ bb_cursor->InsertInstructionAfter(receiver_class, cursor);
+ } else {
+ bb_cursor->InsertInstructionBefore(receiver_class, bb_cursor->GetFirstInstruction());
+ }
+ bb_cursor->InsertInstructionAfter(class_table_get, receiver_class);
+ bb_cursor->InsertInstructionAfter(compare, class_table_get);
+ bb_cursor->InsertInstructionAfter(deoptimize, compare);
+ deoptimize->CopyEnvironmentFrom(invoke_instruction->GetEnvironment());
+
+ // Run type propagation to get the guard typed.
+ ReferenceTypePropagation rtp_fixup(graph_, handles_);
+ rtp_fixup.Run();
+
+ MaybeRecordStat(kInlinedPolymorphicCall);
+
+ return true;
}
bool HInliner::TryInline(HInvoke* invoke_instruction, ArtMethod* method, bool do_rtp) {
generated by cgit v1.2.3-59-g8ed1b (git 2.39.0) at 2025-10-24 14:19:09 +0000