Optimizing: Try pattern substitution when we cannot inline.
Change-Id: I7c01f4494bac8498accc0f087044ec509fee4c98
diff --git a/runtime/quick/inline_method_analyser.cc b/runtime/quick/inline_method_analyser.cc
index 6554394..17306c9 100644
--- a/runtime/quick/inline_method_analyser.cc
+++ b/runtime/quick/inline_method_analyser.cc
@@ -71,14 +71,37 @@
// we need to be able to detect possibly inlined method, we pass a null inline method to indicate
// we don't want to take unresolved methods and fields into account during analysis.
bool InlineMethodAnalyser::AnalyseMethodCode(verifier::MethodVerifier* verifier,
- InlineMethod* method) {
+ InlineMethod* result) {
DCHECK(verifier != nullptr);
if (!Runtime::Current()->UseJit()) {
- DCHECK_EQ(verifier->CanLoadClasses(), method != nullptr);
+ DCHECK_EQ(verifier->CanLoadClasses(), result != nullptr);
}
+
+ // Note: verifier->GetMethod() may be null.
+ return AnalyseMethodCode(verifier->CodeItem(),
+ verifier->GetMethodReference(),
+ (verifier->GetAccessFlags() & kAccStatic) != 0u,
+ verifier->GetMethod(),
+ result);
+}
+
+bool InlineMethodAnalyser::AnalyseMethodCode(ArtMethod* method, InlineMethod* result) {
+ const DexFile::CodeItem* code_item = method->GetCodeItem();
+ if (code_item == nullptr) {
+ // Native or abstract.
+ return false;
+ }
+ return AnalyseMethodCode(
+ code_item, method->ToMethodReference(), method->IsStatic(), method, result);
+}
+
+bool InlineMethodAnalyser::AnalyseMethodCode(const DexFile::CodeItem* code_item,
+ const MethodReference& method_ref,
+ bool is_static,
+ ArtMethod* method,
+ InlineMethod* result) {
// We currently support only plain return or 2-instruction methods.
- const DexFile::CodeItem* code_item = verifier->CodeItem();
DCHECK_NE(code_item->insns_size_in_code_units_, 0u);
const Instruction* instruction = Instruction::At(code_item->insns_);
Instruction::Code opcode = instruction->Opcode();
@@ -86,21 +109,21 @@
switch (opcode) {
case Instruction::RETURN_VOID:
if (method != nullptr) {
- method->opcode = kInlineOpNop;
- method->flags = kInlineSpecial;
- method->d.data = 0u;
+ result->opcode = kInlineOpNop;
+ result->flags = kInlineSpecial;
+ result->d.data = 0u;
}
return true;
case Instruction::RETURN:
case Instruction::RETURN_OBJECT:
case Instruction::RETURN_WIDE:
- return AnalyseReturnMethod(code_item, method);
+ return AnalyseReturnMethod(code_item, result);
case Instruction::CONST:
case Instruction::CONST_4:
case Instruction::CONST_16:
case Instruction::CONST_HIGH16:
// TODO: Support wide constants (RETURN_WIDE).
- return AnalyseConstMethod(code_item, method);
+ return AnalyseConstMethod(code_item, result);
case Instruction::IGET:
case Instruction::IGET_OBJECT:
case Instruction::IGET_BOOLEAN:
@@ -112,7 +135,7 @@
// case Instruction::IGET_QUICK:
// case Instruction::IGET_WIDE_QUICK:
// case Instruction::IGET_OBJECT_QUICK:
- return AnalyseIGetMethod(verifier, method);
+ return AnalyseIGetMethod(code_item, method_ref, is_static, method, result);
case Instruction::IPUT:
case Instruction::IPUT_OBJECT:
case Instruction::IPUT_BOOLEAN:
@@ -124,7 +147,7 @@
// case Instruction::IPUT_QUICK:
// case Instruction::IPUT_WIDE_QUICK:
// case Instruction::IPUT_OBJECT_QUICK:
- return AnalyseIPutMethod(verifier, method);
+ return AnalyseIPutMethod(code_item, method_ref, is_static, method, result);
default:
return false;
}
@@ -194,9 +217,11 @@
return true;
}
-bool InlineMethodAnalyser::AnalyseIGetMethod(verifier::MethodVerifier* verifier,
+bool InlineMethodAnalyser::AnalyseIGetMethod(const DexFile::CodeItem* code_item,
+ const MethodReference& method_ref,
+ bool is_static,
+ ArtMethod* method,
InlineMethod* result) {
- const DexFile::CodeItem* code_item = verifier->CodeItem();
const Instruction* instruction = Instruction::At(code_item->insns_);
Instruction::Code opcode = instruction->Opcode();
DCHECK(IsInstructionIGet(opcode));
@@ -227,10 +252,10 @@
return false; // Not returning the value retrieved by IGET?
}
- if ((verifier->GetAccessFlags() & kAccStatic) != 0u || object_arg != 0u) {
+ if (is_static || object_arg != 0u) {
// TODO: Implement inlining of IGET on non-"this" registers (needs correct stack trace for NPE).
// Allow synthetic accessors. We don't care about losing their stack frame in NPE.
- if (!IsSyntheticAccessor(verifier->GetMethodReference())) {
+ if (!IsSyntheticAccessor(method_ref)) {
return false;
}
}
@@ -243,13 +268,13 @@
if (result != nullptr) {
InlineIGetIPutData* data = &result->d.ifield_data;
- if (!ComputeSpecialAccessorInfo(field_idx, false, verifier, data)) {
+ if (!ComputeSpecialAccessorInfo(method, field_idx, false, data)) {
return false;
}
result->opcode = kInlineOpIGet;
result->flags = kInlineSpecial;
data->op_variant = IGetVariant(opcode);
- data->method_is_static = (verifier->GetAccessFlags() & kAccStatic) != 0u ? 1u : 0u;
+ data->method_is_static = is_static ? 1u : 0u;
data->object_arg = object_arg; // Allow IGET on any register, not just "this".
data->src_arg = 0u;
data->return_arg_plus1 = 0u;
@@ -257,9 +282,11 @@
return true;
}
-bool InlineMethodAnalyser::AnalyseIPutMethod(verifier::MethodVerifier* verifier,
+bool InlineMethodAnalyser::AnalyseIPutMethod(const DexFile::CodeItem* code_item,
+ const MethodReference& method_ref,
+ bool is_static,
+ ArtMethod* method,
InlineMethod* result) {
- const DexFile::CodeItem* code_item = verifier->CodeItem();
const Instruction* instruction = Instruction::At(code_item->insns_);
Instruction::Code opcode = instruction->Opcode();
DCHECK(IsInstructionIPut(opcode));
@@ -292,10 +319,10 @@
uint32_t object_arg = object_reg - arg_start;
uint32_t src_arg = src_reg - arg_start;
- if ((verifier->GetAccessFlags() & kAccStatic) != 0u || object_arg != 0u) {
+ if (is_static || object_arg != 0u) {
// TODO: Implement inlining of IPUT on non-"this" registers (needs correct stack trace for NPE).
// Allow synthetic accessors. We don't care about losing their stack frame in NPE.
- if (!IsSyntheticAccessor(verifier->GetMethodReference())) {
+ if (!IsSyntheticAccessor(method_ref)) {
return false;
}
}
@@ -310,13 +337,13 @@
if (result != nullptr) {
InlineIGetIPutData* data = &result->d.ifield_data;
- if (!ComputeSpecialAccessorInfo(field_idx, true, verifier, data)) {
+ if (!ComputeSpecialAccessorInfo(method, field_idx, true, data)) {
return false;
}
result->opcode = kInlineOpIPut;
result->flags = kInlineSpecial;
data->op_variant = IPutVariant(opcode);
- data->method_is_static = (verifier->GetAccessFlags() & kAccStatic) != 0u ? 1u : 0u;
+ data->method_is_static = is_static ? 1u : 0u;
data->object_arg = object_arg; // Allow IPUT on any register, not just "this".
data->src_arg = src_arg;
data->return_arg_plus1 = return_arg_plus1;
@@ -324,15 +351,17 @@
return true;
}
-bool InlineMethodAnalyser::ComputeSpecialAccessorInfo(uint32_t field_idx, bool is_put,
- verifier::MethodVerifier* verifier,
+bool InlineMethodAnalyser::ComputeSpecialAccessorInfo(ArtMethod* method,
+ uint32_t field_idx,
+ bool is_put,
InlineIGetIPutData* result) {
- mirror::DexCache* dex_cache = verifier->GetDexCache();
- uint32_t method_idx = verifier->GetMethodReference().dex_method_index;
- auto* cl = Runtime::Current()->GetClassLinker();
- ArtMethod* method = dex_cache->GetResolvedMethod(method_idx, cl->GetImagePointerSize());
- ArtField* field = cl->GetResolvedField(field_idx, dex_cache);
- if (method == nullptr || field == nullptr || field->IsStatic()) {
+ if (method == nullptr) {
+ return false;
+ }
+ mirror::DexCache* dex_cache = method->GetDexCache();
+ size_t pointer_size = Runtime::Current()->GetClassLinker()->GetImagePointerSize();
+ ArtField* field = dex_cache->GetResolvedField(field_idx, pointer_size);
+ if (field == nullptr || field->IsStatic()) {
return false;
}
mirror::Class* method_class = method->GetDeclaringClass();