Move mirror::ArtMethod to native
Optimizing + quick tests are passing, devices boot.
TODO: Test and fix bugs in mips64.
Saves 16 bytes per most ArtMethod, 7.5MB reduction in system PSS.
Some of the savings are from removal of virtual methods and direct
methods object arrays.
Bug: 19264997
Change-Id: I622469a0cfa0e7082a2119f3d6a9491eb61e3f3d
diff --git a/compiler/driver/compiler_driver.cc b/compiler/driver/compiler_driver.cc
index f988812..5ff8a53 100644
--- a/compiler/driver/compiler_driver.cc
+++ b/compiler/driver/compiler_driver.cc
@@ -28,6 +28,7 @@
#endif
#include "art_field-inl.h"
+#include "art_method-inl.h"
#include "base/stl_util.h"
#include "base/time_utils.h"
#include "base/timing_logger.h"
@@ -50,8 +51,8 @@
#include "runtime.h"
#include "gc/accounting/card_table-inl.h"
#include "gc/accounting/heap_bitmap.h"
+#include "gc/space/image_space.h"
#include "gc/space/space.h"
-#include "mirror/art_method-inl.h"
#include "mirror/class_loader.h"
#include "mirror/class-inl.h"
#include "mirror/dex_cache-inl.h"
@@ -542,7 +543,7 @@
}
}
-void CompilerDriver::CompileOne(Thread* self, mirror::ArtMethod* method, TimingLogger* timings) {
+void CompilerDriver::CompileOne(Thread* self, ArtMethod* method, TimingLogger* timings) {
DCHECK(!Runtime::Current()->IsStarted());
jobject jclass_loader;
const DexFile* dex_file;
@@ -586,7 +587,7 @@
self->TransitionFromSuspendedToRunnable();
}
-CompiledMethod* CompilerDriver::CompileMethod(Thread* self, mirror::ArtMethod* method) {
+CompiledMethod* CompilerDriver::CompileMethod(Thread* self, ArtMethod* method) {
const uint32_t method_idx = method->GetDexMethodIndex();
const uint32_t access_flags = method->GetAccessFlags();
const InvokeType invoke_type = method->GetInvokeType();
@@ -688,8 +689,8 @@
return methods_to_compile_->find(tmp.c_str()) != methods_to_compile_->end();
}
-static void ResolveExceptionsForMethod(MutableHandle<mirror::ArtMethod> method_handle,
- std::set<std::pair<uint16_t, const DexFile*>>& exceptions_to_resolve)
+static void ResolveExceptionsForMethod(
+ ArtMethod* method_handle, std::set<std::pair<uint16_t, const DexFile*>>& exceptions_to_resolve)
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
const DexFile::CodeItem* code_item = method_handle->GetCodeItem();
if (code_item == nullptr) {
@@ -728,17 +729,14 @@
static bool ResolveCatchBlockExceptionsClassVisitor(mirror::Class* c, void* arg)
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
- std::set<std::pair<uint16_t, const DexFile*>>* exceptions_to_resolve =
+ auto* exceptions_to_resolve =
reinterpret_cast<std::set<std::pair<uint16_t, const DexFile*>>*>(arg);
- StackHandleScope<1> hs(Thread::Current());
- MutableHandle<mirror::ArtMethod> method_handle(hs.NewHandle<mirror::ArtMethod>(nullptr));
- for (size_t i = 0; i < c->NumVirtualMethods(); ++i) {
- method_handle.Assign(c->GetVirtualMethod(i));
- ResolveExceptionsForMethod(method_handle, *exceptions_to_resolve);
+ const auto pointer_size = Runtime::Current()->GetClassLinker()->GetImagePointerSize();
+ for (auto& m : c->GetVirtualMethods(pointer_size)) {
+ ResolveExceptionsForMethod(&m, *exceptions_to_resolve);
}
- for (size_t i = 0; i < c->NumDirectMethods(); ++i) {
- method_handle.Assign(c->GetDirectMethod(i));
- ResolveExceptionsForMethod(method_handle, *exceptions_to_resolve);
+ for (auto& m : c->GetDirectMethods(pointer_size)) {
+ ResolveExceptionsForMethod(&m, *exceptions_to_resolve);
}
return true;
}
@@ -826,6 +824,7 @@
// Make a copy of the handle so that we don't clobber it doing Assign.
MutableHandle<mirror::Class> klass(hs.NewHandle(c.Get()));
std::string temp;
+ const size_t pointer_size = Runtime::Current()->GetClassLinker()->GetImagePointerSize();
while (!klass->IsObjectClass()) {
const char* descriptor = klass->GetDescriptor(&temp);
std::pair<std::unordered_set<std::string>::iterator, bool> result =
@@ -839,6 +838,12 @@
MaybeAddToImageClasses(hs2.NewHandle(mirror::Class::GetDirectInterface(self, klass, i)),
image_classes);
}
+ for (auto& m : c->GetVirtualMethods(pointer_size)) {
+ if (m.IsMiranda() || (true)) {
+ StackHandleScope<1> hs2(self);
+ MaybeAddToImageClasses(hs2.NewHandle(m.GetDeclaringClass()), image_classes);
+ }
+ }
if (klass->IsArrayClass()) {
StackHandleScope<1> hs2(self);
MaybeAddToImageClasses(hs2.NewHandle(klass->GetComponentType()), image_classes);
@@ -855,10 +860,7 @@
Thread* self, ClassLinker* linker, std::string* error_msg) {
std::unique_ptr<ClinitImageUpdate> res(new ClinitImageUpdate(image_class_descriptors, self,
linker));
- if (res->art_method_class_ == nullptr) {
- *error_msg = "Could not find ArtMethod class.";
- return nullptr;
- } else if (res->dex_cache_class_ == nullptr) {
+ if (res->dex_cache_class_ == nullptr) {
*error_msg = "Could not find DexCache class.";
return nullptr;
}
@@ -903,8 +905,6 @@
old_cause_ = self->StartAssertNoThreadSuspension("Boot image closure");
// Find the interesting classes.
- art_method_class_ = linker->LookupClass(self, "Ljava/lang/reflect/ArtMethod;",
- ComputeModifiedUtf8Hash("Ljava/lang/reflect/ArtMethod;"), nullptr);
dex_cache_class_ = linker->LookupClass(self, "Ljava/lang/DexCache;",
ComputeModifiedUtf8Hash("Ljava/lang/DexCache;"), nullptr);
@@ -922,7 +922,8 @@
data->image_classes_.push_back(klass);
} else {
// Check whether it is initialized and has a clinit. They must be kept, too.
- if (klass->IsInitialized() && klass->FindClassInitializer() != nullptr) {
+ if (klass->IsInitialized() && klass->FindClassInitializer(
+ Runtime::Current()->GetClassLinker()->GetImagePointerSize()) != nullptr) {
data->image_classes_.push_back(klass);
}
}
@@ -950,9 +951,9 @@
VisitClinitClassesObject(object->GetClass());
}
- // If it is not a dex cache or an ArtMethod, visit all references.
+ // If it is not a DexCache, visit all references.
mirror::Class* klass = object->GetClass();
- if (klass != art_method_class_ && klass != dex_cache_class_) {
+ if (klass != dex_cache_class_) {
object->VisitReferences<false /* visit class */>(*this, *this);
}
}
@@ -960,7 +961,6 @@
mutable std::unordered_set<mirror::Object*> marked_objects_;
std::unordered_set<std::string>* const image_class_descriptors_;
std::vector<mirror::Class*> image_classes_;
- const mirror::Class* art_method_class_;
const mirror::Class* dex_cache_class_;
Thread* const self_;
const char* old_cause_;
@@ -1334,7 +1334,7 @@
void CompilerDriver::GetCodeAndMethodForDirectCall(InvokeType* type, InvokeType sharp_type,
bool no_guarantee_of_dex_cache_entry,
const mirror::Class* referrer_class,
- mirror::ArtMethod* method,
+ ArtMethod* method,
int* stats_flags,
MethodReference* target_method,
uintptr_t* direct_code,
@@ -1347,6 +1347,8 @@
*direct_method = 0;
Runtime* const runtime = Runtime::Current();
gc::Heap* const heap = runtime->GetHeap();
+ auto* cl = runtime->GetClassLinker();
+ const auto pointer_size = cl->GetImagePointerSize();
bool use_dex_cache = GetCompilerOptions().GetCompilePic(); // Off by default
const bool compiling_boot = heap->IsCompilingBoot();
// TODO This is somewhat hacky. We should refactor all of this invoke codepath.
@@ -1375,7 +1377,7 @@
if (runtime->UseJit()) {
// If we are the JIT, then don't allow a direct call to the interpreter bridge since this will
// never be updated even after we compile the method.
- if (runtime->GetClassLinker()->IsQuickToInterpreterBridge(
+ if (cl->IsQuickToInterpreterBridge(
reinterpret_cast<const void*>(compiler_->GetEntryPointOf(method)))) {
use_dex_cache = true;
}
@@ -1389,8 +1391,7 @@
is_in_image = IsImageClass(method->GetDeclaringClassDescriptor());
} else {
is_in_image = instruction_set_ != kX86 && instruction_set_ != kX86_64 &&
- Runtime::Current()->GetHeap()->FindSpaceFromObject(method->GetDeclaringClass(),
- false)->IsImageSpace();
+ heap->FindSpaceFromObject(method->GetDeclaringClass(), false)->IsImageSpace();
}
if (!is_in_image) {
// We can only branch directly to Methods that are resolved in the DexCache.
@@ -1403,14 +1404,14 @@
bool must_use_direct_pointers = false;
mirror::DexCache* dex_cache = declaring_class->GetDexCache();
if (target_method->dex_file == dex_cache->GetDexFile() &&
- !(runtime->UseJit() && dex_cache->GetResolvedMethod(method->GetDexMethodIndex()) == nullptr)) {
+ !(runtime->UseJit() && dex_cache->GetResolvedMethod(
+ method->GetDexMethodIndex(), pointer_size) == nullptr)) {
target_method->dex_method_index = method->GetDexMethodIndex();
} else {
if (no_guarantee_of_dex_cache_entry) {
// See if the method is also declared in this dex cache.
- uint32_t dex_method_idx =
- method->FindDexMethodIndexInOtherDexFile(*target_method->dex_file,
- target_method->dex_method_index);
+ uint32_t dex_method_idx = method->FindDexMethodIndexInOtherDexFile(
+ *target_method->dex_file, target_method->dex_method_index);
if (dex_method_idx != DexFile::kDexNoIndex) {
target_method->dex_method_index = dex_method_idx;
} else {
@@ -1431,7 +1432,13 @@
*type = sharp_type;
}
} else {
- bool method_in_image = heap->FindSpaceFromObject(method, false)->IsImageSpace();
+ auto* image_space = heap->GetImageSpace();
+ bool method_in_image = false;
+ if (image_space != nullptr) {
+ const auto& method_section = image_space->GetImageHeader().GetMethodsSection();
+ method_in_image = method_section.Contains(
+ reinterpret_cast<uint8_t*>(method) - image_space->Begin());
+ }
if (method_in_image || compiling_boot || runtime->UseJit()) {
// We know we must be able to get to the method in the image, so use that pointer.
// In the case where we are the JIT, we can always use direct pointers since we know where
@@ -1469,21 +1476,16 @@
int stats_flags = 0;
ScopedObjectAccess soa(Thread::Current());
// Try to resolve the method and compiling method's class.
- mirror::ArtMethod* resolved_method;
- mirror::Class* referrer_class;
StackHandleScope<3> hs(soa.Self());
Handle<mirror::DexCache> dex_cache(
hs.NewHandle(mUnit->GetClassLinker()->FindDexCache(*mUnit->GetDexFile())));
Handle<mirror::ClassLoader> class_loader(hs.NewHandle(
soa.Decode<mirror::ClassLoader*>(mUnit->GetClassLoader())));
- {
- uint32_t method_idx = target_method->dex_method_index;
- Handle<mirror::ArtMethod> resolved_method_handle(hs.NewHandle(
- ResolveMethod(soa, dex_cache, class_loader, mUnit, method_idx, orig_invoke_type)));
- referrer_class = (resolved_method_handle.Get() != nullptr)
- ? ResolveCompilingMethodsClass(soa, dex_cache, class_loader, mUnit) : nullptr;
- resolved_method = resolved_method_handle.Get();
- }
+ uint32_t method_idx = target_method->dex_method_index;
+ ArtMethod* resolved_method = ResolveMethod(
+ soa, dex_cache, class_loader, mUnit, method_idx, orig_invoke_type);
+ auto h_referrer_class = hs.NewHandle(resolved_method != nullptr ?
+ ResolveCompilingMethodsClass(soa, dex_cache, class_loader, mUnit) : nullptr);
bool result = false;
if (resolved_method != nullptr) {
*vtable_idx = GetResolvedMethodVTableIndex(resolved_method, orig_invoke_type);
@@ -1492,13 +1494,13 @@
const MethodReference* devirt_target = mUnit->GetVerifiedMethod()->GetDevirtTarget(dex_pc);
stats_flags = IsFastInvoke(
- soa, dex_cache, class_loader, mUnit, referrer_class, resolved_method,
+ soa, dex_cache, class_loader, mUnit, h_referrer_class.Get(), resolved_method,
invoke_type, target_method, devirt_target, direct_code, direct_method);
result = stats_flags != 0;
} else {
// Devirtualization not enabled. Inline IsFastInvoke(), dropping the devirtualization parts.
- if (UNLIKELY(referrer_class == nullptr) ||
- UNLIKELY(!referrer_class->CanAccessResolvedMethod(resolved_method->GetDeclaringClass(),
+ if (UNLIKELY(h_referrer_class.Get() == nullptr) ||
+ UNLIKELY(!h_referrer_class->CanAccessResolvedMethod(resolved_method->GetDeclaringClass(),
resolved_method, dex_cache.Get(),
target_method->dex_method_index)) ||
*invoke_type == kSuper) {
@@ -1506,8 +1508,9 @@
} else {
// Sharpening failed so generate a regular resolved method dispatch.
stats_flags = kFlagMethodResolved;
- GetCodeAndMethodForDirectCall(invoke_type, *invoke_type, false, referrer_class, resolved_method,
- &stats_flags, target_method, direct_code, direct_method);
+ GetCodeAndMethodForDirectCall(
+ invoke_type, *invoke_type, false, h_referrer_class.Get(), resolved_method, &stats_flags,
+ target_method, direct_code, direct_method);
result = true;
}
}
@@ -1773,20 +1776,18 @@
}
if (resolve_fields_and_methods) {
while (it.HasNextDirectMethod()) {
- mirror::ArtMethod* method = class_linker->ResolveMethod(dex_file, it.GetMemberIndex(),
- dex_cache, class_loader,
- NullHandle<mirror::ArtMethod>(),
- it.GetMethodInvokeType(class_def));
+ ArtMethod* method = class_linker->ResolveMethod(
+ dex_file, it.GetMemberIndex(), dex_cache, class_loader, nullptr,
+ it.GetMethodInvokeType(class_def));
if (method == nullptr) {
CheckAndClearResolveException(soa.Self());
}
it.Next();
}
while (it.HasNextVirtualMethod()) {
- mirror::ArtMethod* method = class_linker->ResolveMethod(dex_file, it.GetMemberIndex(),
- dex_cache, class_loader,
- NullHandle<mirror::ArtMethod>(),
- it.GetMethodInvokeType(class_def));
+ ArtMethod* method = class_linker->ResolveMethod(
+ dex_file, it.GetMemberIndex(), dex_cache, class_loader, nullptr,
+ it.GetMethodInvokeType(class_def));
if (method == nullptr) {
CheckAndClearResolveException(soa.Self());
}