Ryan Macnak
ccf7eac86d
This is preparation for switching the call's stub when polymorphism gets too high. Bug: https://github.com/dart-lang/sdk/issues/26780 Bug: https://github.com/dart-lang/sdk/issues/29294 Bug: https://github.com/dart-lang/sdk/issues/36409 Change-Id: If601ea97a1942a567bee0847afeb3b4e9c11481a Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/99705 Commit-Queue: Ryan Macnak <rmacnak@google.com> Reviewed-by: Alexander Markov <alexmarkov@google.com>
101 lines
3.2 KiB
C++
101 lines
3.2 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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#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/stub_code_list.h"
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namespace dart {
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namespace compiler {
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// Forward declarations.
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class Assembler;
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class StubCodeCompiler : public AllStatic {
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public:
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#if !defined(TARGET_ARCH_DBC) && !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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#if !defined(DART_PRECOMPILED_RUNTIME)
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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 GenerateSharedStub(Assembler* assembler,
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bool save_fpu_registers,
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const RuntimeEntry* target,
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intptr_t self_code_stub_offset_from_thread,
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bool allow_return);
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static void GenerateMegamorphicMissStub(Assembler* assembler);
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static void GenerateAllocationStubForClass(Assembler* assembler,
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const Class& cls);
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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 GenerateUsageCounterIncrement(Assembler* assembler,
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Register temp_reg);
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static void GenerateOptimizedUsageCounterIncrement(Assembler* assembler);
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#endif // !defined(DART_PRECOMPILED_RUNTIME)
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};
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} // namespace compiler
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enum DeoptStubKind { kLazyDeoptFromReturn, kLazyDeoptFromThrow, kEagerDeopt };
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// Invocation mode for TypeCheck runtime entry that describes
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// where we are calling it from.
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enum TypeCheckMode {
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// TypeCheck is invoked from LazySpecializeTypeTest stub.
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// It should replace stub on the type with a specialized version.
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kTypeCheckFromLazySpecializeStub,
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// TypeCheck is invoked from the SlowTypeTest stub.
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// This means that cache can be lazily created (if needed)
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// and dst_name can be fetched from the pool.
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kTypeCheckFromSlowStub,
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// TypeCheck is invoked from normal inline AssertAssignable.
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// Both cache and dst_name must be already populated.
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kTypeCheckFromInline
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};
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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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