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Issue 2087463004: Revert of [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 (c) 1994-2006 Sun Microsystems Inc. 1 // Copyright (c) 1994-2006 Sun Microsystems Inc.
2 // All Rights Reserved. 2 // All Rights Reserved.
3 // 3 //
4 // Redistribution and use in source and binary forms, with or without 4 // Redistribution and use in source and binary forms, with or without
5 // modification, are permitted provided that the following conditions are 5 // modification, are permitted provided that the following conditions are
6 // met: 6 // met:
7 // 7 //
8 // - Redistributions of source code must retain the above copyright notice, 8 // - Redistributions of source code must retain the above copyright notice,
9 // this list of conditions and the following disclaimer. 9 // this list of conditions and the following disclaimer.
10 // 10 //
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197 // ----------------------------------------------------------------------------- 197 // -----------------------------------------------------------------------------
198 // Implementation of Operand and MemOperand. 198 // Implementation of Operand and MemOperand.
199 // See assembler-mips-inl.h for inlined constructors. 199 // See assembler-mips-inl.h for inlined constructors.
200 200
201 Operand::Operand(Handle<Object> handle) { 201 Operand::Operand(Handle<Object> handle) {
202 AllowDeferredHandleDereference using_raw_address; 202 AllowDeferredHandleDereference using_raw_address;
203 rm_ = no_reg; 203 rm_ = no_reg;
204 // Verify all Objects referred by code are NOT in new space. 204 // Verify all Objects referred by code are NOT in new space.
205 Object* obj = *handle; 205 Object* obj = *handle;
206 if (obj->IsHeapObject()) { 206 if (obj->IsHeapObject()) {
207 DCHECK(!HeapObject::cast(obj)->GetHeap()->InNewSpace(obj));
207 imm64_ = reinterpret_cast<intptr_t>(handle.location()); 208 imm64_ = reinterpret_cast<intptr_t>(handle.location());
208 rmode_ = RelocInfo::EMBEDDED_OBJECT; 209 rmode_ = RelocInfo::EMBEDDED_OBJECT;
209 } else { 210 } else {
210 // No relocation needed. 211 // No relocation needed.
211 imm64_ = reinterpret_cast<intptr_t>(obj); 212 imm64_ = reinterpret_cast<intptr_t>(obj);
212 rmode_ = RelocInfo::NONE64; 213 rmode_ = RelocInfo::NONE64;
213 } 214 }
214 } 215 }
215 216
216 217
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3420 if (icache_flush_mode != SKIP_ICACHE_FLUSH) { 3421 if (icache_flush_mode != SKIP_ICACHE_FLUSH) {
3421 Assembler::FlushICache(isolate, pc, 4 * Assembler::kInstrSize); 3422 Assembler::FlushICache(isolate, pc, 4 * Assembler::kInstrSize);
3422 } 3423 }
3423 } 3424 }
3424 3425
3425 3426
3426 } // namespace internal 3427 } // namespace internal
3427 } // namespace v8 3428 } // namespace v8
3428 3429
3429 #endif // V8_TARGET_ARCH_MIPS64 3430 #endif // V8_TARGET_ARCH_MIPS64
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