Alexander Markov
994f454996
This change introduces 2 new stubs, InitLateInstanceField and InitLateFinalInstanceField. Those stubs call field initializer directly without going to runtime. Fixes the regressions on Uri.pathSegments.easy and Uri.pathSegments.hard.normalized benchmarks with NNBD SDK after https://dart-review.googlesource.com/c/sdk/+/143189. Change-Id: I6bde7a98010ac1321a95eda8b0f125105f3993c4 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/144807 Commit-Queue: Alexander Markov <alexmarkov@google.com> Reviewed-by: Liam Appelbe <liama@google.com> Reviewed-by: Vyacheslav Egorov <vegorov@google.com> Reviewed-by: Martin Kustermann <kustermann@google.com>
149 lines
4.9 KiB
C++
149 lines
4.9 KiB
C++
// Copyright (c) 2019, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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#ifndef RUNTIME_VM_COMPILER_STUB_CODE_COMPILER_H_
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#define RUNTIME_VM_COMPILER_STUB_CODE_COMPILER_H_
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#if defined(DART_PRECOMPILED_RUNTIME)
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#error "AOT runtime should not use compiler sources (including header files)"
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#endif // defined(DART_PRECOMPILED_RUNTIME)
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#include "vm/allocation.h"
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#include "vm/compiler/runtime_api.h"
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#include "vm/constants.h"
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#include "vm/growable_array.h"
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#include "vm/stub_code_list.h"
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#include "vm/tagged_pointer.h"
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namespace dart {
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// Forward declarations.
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class Code;
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namespace compiler {
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// Forward declarations.
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class Assembler;
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// Represents an unresolved PC-relative Call/TailCall.
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class UnresolvedPcRelativeCall : public ZoneAllocated {
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public:
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UnresolvedPcRelativeCall(intptr_t offset,
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const dart::Code& target,
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bool is_tail_call)
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: offset_(offset), target_(target), is_tail_call_(is_tail_call) {}
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intptr_t offset() const { return offset_; }
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const dart::Code& target() const { return target_; }
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bool is_tail_call() const { return is_tail_call_; }
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private:
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const intptr_t offset_;
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const dart::Code& target_;
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const bool is_tail_call_;
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};
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using UnresolvedPcRelativeCalls = GrowableArray<UnresolvedPcRelativeCall*>;
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class StubCodeCompiler : public AllStatic {
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public:
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#if !defined(TARGET_ARCH_IA32)
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static void GenerateBuildMethodExtractorStub(
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Assembler* assembler,
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const Object& closure_allocation_stub,
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const Object& context_allocation_stub);
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#endif
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static ArrayPtr BuildStaticCallsTable(
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Zone* zone,
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compiler::UnresolvedPcRelativeCalls* unresolved_calls);
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#define STUB_CODE_GENERATE(name) \
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static void Generate##name##Stub(Assembler* assembler);
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VM_STUB_CODE_LIST(STUB_CODE_GENERATE)
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#undef STUB_CODE_GENERATE
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static void GenerateMegamorphicCallMissStub(Assembler* assembler);
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static void GenerateAllocationStubForClass(
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Assembler* assembler,
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UnresolvedPcRelativeCalls* unresolved_calls,
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const Class& cls,
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const dart::Code& allocate_object,
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const dart::Code& allocat_object_parametrized);
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enum Optimized {
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kUnoptimized,
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kOptimized,
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};
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enum CallType {
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kInstanceCall,
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kStaticCall,
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};
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enum Exactness {
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kCheckExactness,
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kIgnoreExactness,
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};
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static void GenerateNArgsCheckInlineCacheStub(
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Assembler* assembler,
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intptr_t num_args,
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const RuntimeEntry& handle_ic_miss,
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Token::Kind kind,
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Optimized optimized,
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CallType type,
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Exactness exactness);
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static void GenerateNArgsCheckInlineCacheStubForEntryKind(
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Assembler* assembler,
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intptr_t num_args,
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const RuntimeEntry& handle_ic_miss,
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Token::Kind kind,
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Optimized optimized,
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CallType type,
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Exactness exactness,
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CodeEntryKind entry_kind);
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static void GenerateUsageCounterIncrement(Assembler* assembler,
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Register temp_reg);
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static void GenerateOptimizedUsageCounterIncrement(Assembler* assembler);
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#if defined(TARGET_ARCH_X64)
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static constexpr intptr_t kNativeCallbackTrampolineSize = 10;
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static constexpr intptr_t kNativeCallbackSharedStubSize = 217;
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static constexpr intptr_t kNativeCallbackTrampolineStackDelta = 2;
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#elif defined(TARGET_ARCH_IA32)
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static constexpr intptr_t kNativeCallbackTrampolineSize = 10;
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static constexpr intptr_t kNativeCallbackSharedStubSize = 90;
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static constexpr intptr_t kNativeCallbackTrampolineStackDelta = 2;
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#elif defined(TARGET_ARCH_ARM)
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static constexpr intptr_t kNativeCallbackTrampolineSize = 12;
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static constexpr intptr_t kNativeCallbackSharedStubSize = 140;
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static constexpr intptr_t kNativeCallbackTrampolineStackDelta = 4;
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#elif defined(TARGET_ARCH_ARM64)
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static constexpr intptr_t kNativeCallbackTrampolineSize = 12;
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static constexpr intptr_t kNativeCallbackSharedStubSize = 268;
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static constexpr intptr_t kNativeCallbackTrampolineStackDelta = 2;
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#endif
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static void GenerateJITCallbackTrampolines(Assembler* assembler,
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intptr_t next_callback_id);
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private:
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// Common function for generating InitLateInstanceField and
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// InitLateFinalInstanceField stubs.
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static void GenerateInitLateInstanceFieldStub(Assembler* assembler,
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bool is_final);
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};
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} // namespace compiler
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enum DeoptStubKind { kLazyDeoptFromReturn, kLazyDeoptFromThrow, kEagerDeopt };
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// Zap value used to indicate unused CODE_REG in deopt.
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static const uword kZapCodeReg = 0xf1f1f1f1;
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// Zap value used to indicate unused return address in deopt.
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static const uword kZapReturnAddress = 0xe1e1e1e1;
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} // namespace dart
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#endif // RUNTIME_VM_COMPILER_STUB_CODE_COMPILER_H_
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