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Issue 2976723003: Eliminate dependencies on assemblers and code stubs in precompiled runtime. (Closed)
Patch Set: Eliminate precompiled runtime flag Created 3 years, 5 months ago
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1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file 1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file
2 // for details. All rights reserved. Use of this source code is governed by a 2 // for details. All rights reserved. Use of this source code is governed by a
3 // BSD-style license that can be found in the LICENSE file. 3 // BSD-style license that can be found in the LICENSE file.
4 4
5 #include "vm/megamorphic_cache_table.h" 5 #include "vm/megamorphic_cache_table.h"
6 6
7 #include <stdlib.h> 7 #include <stdlib.h>
8 #include "vm/object.h" 8 #include "vm/object.h"
9 #include "vm/object_store.h" 9 #include "vm/object_store.h"
10 #include "vm/stub_code.h" 10 #include "vm/stub_code.h"
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43 } 43 }
44 44
45 45
46 RawFunction* MegamorphicCacheTable::miss_handler(Isolate* isolate) { 46 RawFunction* MegamorphicCacheTable::miss_handler(Isolate* isolate) {
47 ASSERT(isolate->object_store()->megamorphic_miss_function() != 47 ASSERT(isolate->object_store()->megamorphic_miss_function() !=
48 Function::null()); 48 Function::null());
49 return isolate->object_store()->megamorphic_miss_function(); 49 return isolate->object_store()->megamorphic_miss_function();
50 } 50 }
51 51
52 52
53 #if !defined(DART_PRECOMPILED_RUNTIME)
53 void MegamorphicCacheTable::InitMissHandler(Isolate* isolate) { 54 void MegamorphicCacheTable::InitMissHandler(Isolate* isolate) {
54 // The miss handler for a class ID not found in the table is invoked as a 55 // The miss handler for a class ID not found in the table is invoked as a
55 // normal Dart function. 56 // normal Dart function.
56 const Code& code = Code::Handle(StubCode::Generate( 57 const Code& code = Code::Handle(StubCode::Generate(
57 "_stub_MegamorphicMiss", StubCode::GenerateMegamorphicMissStub)); 58 "_stub_MegamorphicMiss", StubCode::GenerateMegamorphicMissStub));
58 // When FLAG_lazy_dispatchers=false, this stub can be on the stack during 59 // When FLAG_lazy_dispatchers=false, this stub can be on the stack during
59 // exceptions, but it has a corresponding function so IsStubCode is false and 60 // exceptions, but it has a corresponding function so IsStubCode is false and
60 // it is considered in the search for an exception handler. 61 // it is considered in the search for an exception handler.
61 code.set_exception_handlers(Object::empty_exception_handlers()); 62 code.set_exception_handlers(Object::empty_exception_handlers());
62 const Class& cls = 63 const Class& cls =
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73 function.set_is_debuggable(false); 74 function.set_is_debuggable(false);
74 function.set_is_visible(false); 75 function.set_is_visible(false);
75 function.AttachCode(code); // Has a single entry point, as a static function. 76 function.AttachCode(code); // Has a single entry point, as a static function.
76 // For inclusion in Snapshot::kFullJIT. 77 // For inclusion in Snapshot::kFullJIT.
77 function.set_unoptimized_code(code); 78 function.set_unoptimized_code(code);
78 79
79 ASSERT(isolate->object_store()->megamorphic_miss_function() == 80 ASSERT(isolate->object_store()->megamorphic_miss_function() ==
80 Function::null()); 81 Function::null());
81 isolate->object_store()->SetMegamorphicMissHandler(code, function); 82 isolate->object_store()->SetMegamorphicMissHandler(code, function);
82 } 83 }
84 #endif // !defined(DART_PRECOMPILED_RUNTIME)
83 85
84 86
85 void MegamorphicCacheTable::PrintSizes(Isolate* isolate) { 87 void MegamorphicCacheTable::PrintSizes(Isolate* isolate) {
86 StackZone zone(Thread::Current()); 88 StackZone zone(Thread::Current());
87 intptr_t size = 0; 89 intptr_t size = 0;
88 MegamorphicCache& cache = MegamorphicCache::Handle(); 90 MegamorphicCache& cache = MegamorphicCache::Handle();
89 Array& buckets = Array::Handle(); 91 Array& buckets = Array::Handle();
90 const GrowableObjectArray& table = GrowableObjectArray::Handle( 92 const GrowableObjectArray& table = GrowableObjectArray::Handle(
91 isolate->object_store()->megamorphic_cache_table()); 93 isolate->object_store()->megamorphic_cache_table());
92 if (table.IsNull()) return; 94 if (table.IsNull()) return;
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143 for (intptr_t i = 0; i <= max_probe_count; i++) { 145 for (intptr_t i = 0; i <= max_probe_count; i++) {
144 cumulative_entries += probe_counts[i]; 146 cumulative_entries += probe_counts[i];
145 OS::Print("Megamorphic probe %" Pd ": %" Pd " (%lf)\n", i, probe_counts[i], 147 OS::Print("Megamorphic probe %" Pd ": %" Pd " (%lf)\n", i, probe_counts[i],
146 static_cast<double>(cumulative_entries) / 148 static_cast<double>(cumulative_entries) /
147 static_cast<double>(entry_count)); 149 static_cast<double>(entry_count));
148 } 150 }
149 delete[] probe_counts; 151 delete[] probe_counts;
150 } 152 }
151 153
152 } // namespace dart 154 } // namespace dart
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