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Issue 2090983002: Revert of Reland [heap] Avoid the use of cells to point from code to new-space objects. (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: Created 4 years, 6 months ago
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1 // Copyright 2007-2010 the V8 project authors. All rights reserved. 1 // Copyright 2007-2010 the V8 project authors. All rights reserved.
2 // Redistribution and use in source and binary forms, with or without 2 // Redistribution and use in source and binary forms, with or without
3 // modification, are permitted provided that the following conditions are 3 // modification, are permitted provided that the following conditions are
4 // met: 4 // met:
5 // 5 //
6 // * Redistributions of source code must retain the above copyright 6 // * Redistributions of source code must retain the above copyright
7 // notice, this list of conditions and the following disclaimer. 7 // notice, this list of conditions and the following disclaimer.
8 // * Redistributions in binary form must reproduce the above 8 // * Redistributions in binary form must reproduce the above
9 // copyright notice, this list of conditions and the following 9 // copyright notice, this list of conditions and the following
10 // disclaimer in the documentation and/or other materials provided 10 // disclaimer in the documentation and/or other materials provided
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1845 byte* buffer = static_cast<byte*>(v8::base::OS::Allocate( 1845 byte* buffer = static_cast<byte*>(v8::base::OS::Allocate(
1846 Assembler::kMinimalBufferSize, &actual_size, true)); 1846 Assembler::kMinimalBufferSize, &actual_size, true));
1847 CHECK(buffer); 1847 CHECK(buffer);
1848 HandleScope handles(isolate); 1848 HandleScope handles(isolate);
1849 1849
1850 MacroAssembler assembler(isolate, buffer, static_cast<int>(actual_size), 1850 MacroAssembler assembler(isolate, buffer, static_cast<int>(actual_size),
1851 v8::internal::CodeObjectRequired::kYes); 1851 v8::internal::CodeObjectRequired::kYes);
1852 assembler.enable_serializer(); 1852 assembler.enable_serializer();
1853 Handle<HeapNumber> number = isolate->factory()->NewHeapNumber(0.3); 1853 Handle<HeapNumber> number = isolate->factory()->NewHeapNumber(0.3);
1854 CHECK(isolate->heap()->InNewSpace(*number)); 1854 CHECK(isolate->heap()->InNewSpace(*number));
1855 Handle<Code> code; 1855 MacroAssembler* masm = &assembler;
1856 { 1856 masm->MoveHeapObject(rax, number);
1857 MacroAssembler* masm = &assembler; 1857 masm->ret(0);
1858 Handle<Cell> cell = isolate->factory()->NewCell(number); 1858 CodeDesc desc;
1859 masm->Move(rax, cell, RelocInfo::CELL); 1859 masm->GetCode(&desc);
1860 masm->movp(rax, Operand(rax, 0)); 1860 Handle<Code> code = isolate->factory()->NewCode(
1861 masm->ret(0); 1861 desc, Code::ComputeFlags(Code::FUNCTION), masm->CodeObject());
1862 CodeDesc desc; 1862 code->set_has_reloc_info_for_serialization(true);
1863 masm->GetCode(&desc); 1863
1864 code = isolate->factory()->NewCode(desc, Code::ComputeFlags(Code::FUNCTION),
1865 masm->CodeObject());
1866 code->set_has_reloc_info_for_serialization(true);
1867 }
1868 RelocIterator rit1(*code, 1 << RelocInfo::CELL); 1864 RelocIterator rit1(*code, 1 << RelocInfo::CELL);
1869 CHECK_EQ(*number, rit1.rinfo()->target_cell()->value()); 1865 CHECK_EQ(*number, rit1.rinfo()->target_cell()->value());
1870 1866
1871 Handle<String> source = isolate->factory()->empty_string(); 1867 Handle<String> source = isolate->factory()->empty_string();
1872 Handle<SharedFunctionInfo> sfi = 1868 Handle<SharedFunctionInfo> sfi =
1873 isolate->factory()->NewSharedFunctionInfo(source, code, false); 1869 isolate->factory()->NewSharedFunctionInfo(source, code, false);
1874 ScriptData* script_data = CodeSerializer::Serialize(isolate, sfi, source); 1870 ScriptData* script_data = CodeSerializer::Serialize(isolate, sfi, source);
1875 1871
1876 Handle<SharedFunctionInfo> copy = 1872 Handle<SharedFunctionInfo> copy =
1877 CodeSerializer::Deserialize(isolate, script_data, source) 1873 CodeSerializer::Deserialize(isolate, script_data, source)
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2126 } 2122 }
2127 delete[] blob.data; 2123 delete[] blob.data;
2128 } 2124 }
2129 2125
2130 TEST(SerializationMemoryStats) { 2126 TEST(SerializationMemoryStats) {
2131 FLAG_profile_deserialization = true; 2127 FLAG_profile_deserialization = true;
2132 FLAG_always_opt = false; 2128 FLAG_always_opt = false;
2133 v8::StartupData blob = v8::V8::CreateSnapshotDataBlob(); 2129 v8::StartupData blob = v8::V8::CreateSnapshotDataBlob();
2134 delete[] blob.data; 2130 delete[] blob.data;
2135 } 2131 }
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