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Issue 16631002: Separate Cell and PropertyCell spaces (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Remove Mips changes Created 7 years, 6 months ago
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1 // Copyright 2012 the V8 project authors. All rights reserved. 1 // Copyright 2012 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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2823 __ ldr(map, FieldMemOperand(object, HeapObject::kMapOffset)); 2823 __ ldr(map, FieldMemOperand(object, HeapObject::kMapOffset));
2824 { 2824 {
2825 // Block constant pool emission to ensure the positions of instructions are 2825 // Block constant pool emission to ensure the positions of instructions are
2826 // as expected by the patcher. See InstanceofStub::Generate(). 2826 // as expected by the patcher. See InstanceofStub::Generate().
2827 Assembler::BlockConstPoolScope block_const_pool(masm()); 2827 Assembler::BlockConstPoolScope block_const_pool(masm());
2828 __ bind(deferred->map_check()); // Label for calculating code patching. 2828 __ bind(deferred->map_check()); // Label for calculating code patching.
2829 // We use Factory::the_hole_value() on purpose instead of loading from the 2829 // We use Factory::the_hole_value() on purpose instead of loading from the
2830 // root array to force relocation to be able to later patch with 2830 // root array to force relocation to be able to later patch with
2831 // the cached map. 2831 // the cached map.
2832 PredictableCodeSizeScope predictable(masm_, 5 * Assembler::kInstrSize); 2832 PredictableCodeSizeScope predictable(masm_, 5 * Assembler::kInstrSize);
2833 Handle<JSGlobalPropertyCell> cell = 2833 Handle<Cell> cell = factory()->NewCell(factory()->the_hole_value());
2834 factory()->NewJSGlobalPropertyCell(factory()->the_hole_value());
2835 __ mov(ip, Operand(Handle<Object>(cell))); 2834 __ mov(ip, Operand(Handle<Object>(cell)));
2836 __ ldr(ip, FieldMemOperand(ip, JSGlobalPropertyCell::kValueOffset)); 2835 __ ldr(ip, FieldMemOperand(ip, JSGlobalPropertyCell::kValueOffset));
2837 __ cmp(map, Operand(ip)); 2836 __ cmp(map, Operand(ip));
2838 __ b(ne, &cache_miss); 2837 __ b(ne, &cache_miss);
2839 // We use Factory::the_hole_value() on purpose instead of loading from the 2838 // We use Factory::the_hole_value() on purpose instead of loading from the
2840 // root array to force relocation to be able to later patch 2839 // root array to force relocation to be able to later patch
2841 // with true or false. 2840 // with true or false.
2842 __ mov(result, Operand(factory()->the_hole_value())); 2841 __ mov(result, Operand(factory()->the_hole_value()));
2843 } 2842 }
2844 __ b(&done); 2843 __ b(&done);
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2986 2985
2987 if (no_frame_start != -1) { 2986 if (no_frame_start != -1) {
2988 info_->AddNoFrameRange(no_frame_start, masm_->pc_offset()); 2987 info_->AddNoFrameRange(no_frame_start, masm_->pc_offset());
2989 } 2988 }
2990 } 2989 }
2991 2990
2992 2991
2993 void LCodeGen::DoLoadGlobalCell(LLoadGlobalCell* instr) { 2992 void LCodeGen::DoLoadGlobalCell(LLoadGlobalCell* instr) {
2994 Register result = ToRegister(instr->result()); 2993 Register result = ToRegister(instr->result());
2995 __ mov(ip, Operand(Handle<Object>(instr->hydrogen()->cell()))); 2994 __ mov(ip, Operand(Handle<Object>(instr->hydrogen()->cell())));
2996 __ ldr(result, FieldMemOperand(ip, JSGlobalPropertyCell::kValueOffset)); 2995 __ ldr(result, FieldMemOperand(ip, Cell::kValueOffset));
2997 if (instr->hydrogen()->RequiresHoleCheck()) { 2996 if (instr->hydrogen()->RequiresHoleCheck()) {
2998 __ LoadRoot(ip, Heap::kTheHoleValueRootIndex); 2997 __ LoadRoot(ip, Heap::kTheHoleValueRootIndex);
2999 __ cmp(result, ip); 2998 __ cmp(result, ip);
3000 DeoptimizeIf(eq, instr->environment()); 2999 DeoptimizeIf(eq, instr->environment());
3001 } 3000 }
3002 } 3001 }
3003 3002
3004 3003
3005 void LCodeGen::DoLoadGlobalGeneric(LLoadGlobalGeneric* instr) { 3004 void LCodeGen::DoLoadGlobalGeneric(LLoadGlobalGeneric* instr) {
3006 ASSERT(ToRegister(instr->global_object()).is(r0)); 3005 ASSERT(ToRegister(instr->global_object()).is(r0));
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3021 // Load the cell. 3020 // Load the cell.
3022 __ mov(cell, Operand(instr->hydrogen()->cell())); 3021 __ mov(cell, Operand(instr->hydrogen()->cell()));
3023 3022
3024 // If the cell we are storing to contains the hole it could have 3023 // If the cell we are storing to contains the hole it could have
3025 // been deleted from the property dictionary. In that case, we need 3024 // been deleted from the property dictionary. In that case, we need
3026 // to update the property details in the property dictionary to mark 3025 // to update the property details in the property dictionary to mark
3027 // it as no longer deleted. 3026 // it as no longer deleted.
3028 if (instr->hydrogen()->RequiresHoleCheck()) { 3027 if (instr->hydrogen()->RequiresHoleCheck()) {
3029 // We use a temp to check the payload (CompareRoot might clobber ip). 3028 // We use a temp to check the payload (CompareRoot might clobber ip).
3030 Register payload = ToRegister(instr->temp()); 3029 Register payload = ToRegister(instr->temp());
3031 __ ldr(payload, FieldMemOperand(cell, JSGlobalPropertyCell::kValueOffset)); 3030 __ ldr(payload, FieldMemOperand(cell, Cell::kValueOffset));
3032 __ CompareRoot(payload, Heap::kTheHoleValueRootIndex); 3031 __ CompareRoot(payload, Heap::kTheHoleValueRootIndex);
3033 DeoptimizeIf(eq, instr->environment()); 3032 DeoptimizeIf(eq, instr->environment());
3034 } 3033 }
3035 3034
3036 // Store the value. 3035 // Store the value.
3037 __ str(value, FieldMemOperand(cell, JSGlobalPropertyCell::kValueOffset)); 3036 __ str(value, FieldMemOperand(cell, Cell::kValueOffset));
3038 // Cells are always rescanned, so no write barrier here. 3037 // Cells are always rescanned, so no write barrier here.
3039 } 3038 }
3040 3039
3041 3040
3042 void LCodeGen::DoStoreGlobalGeneric(LStoreGlobalGeneric* instr) { 3041 void LCodeGen::DoStoreGlobalGeneric(LStoreGlobalGeneric* instr) {
3043 ASSERT(ToRegister(instr->global_object()).is(r1)); 3042 ASSERT(ToRegister(instr->global_object()).is(r1));
3044 ASSERT(ToRegister(instr->value()).is(r0)); 3043 ASSERT(ToRegister(instr->value()).is(r0));
3045 3044
3046 __ mov(r2, Operand(instr->name())); 3045 __ mov(r2, Operand(instr->name()));
3047 Handle<Code> ic = (instr->strict_mode_flag() == kStrictMode) 3046 Handle<Code> ic = (instr->strict_mode_flag() == kStrictMode)
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5297 } 5296 }
5298 } 5297 }
5299 5298
5300 5299
5301 void LCodeGen::DoCheckFunction(LCheckFunction* instr) { 5300 void LCodeGen::DoCheckFunction(LCheckFunction* instr) {
5302 Register reg = ToRegister(instr->value()); 5301 Register reg = ToRegister(instr->value());
5303 Handle<JSFunction> target = instr->hydrogen()->target(); 5302 Handle<JSFunction> target = instr->hydrogen()->target();
5304 AllowDeferredHandleDereference smi_check; 5303 AllowDeferredHandleDereference smi_check;
5305 if (isolate()->heap()->InNewSpace(*target)) { 5304 if (isolate()->heap()->InNewSpace(*target)) {
5306 Register reg = ToRegister(instr->value()); 5305 Register reg = ToRegister(instr->value());
5307 Handle<JSGlobalPropertyCell> cell = 5306 Handle<Cell> cell = isolate()->factory()->NewJSGlobalPropertyCell(target);
5308 isolate()->factory()->NewJSGlobalPropertyCell(target);
5309 __ mov(ip, Operand(Handle<Object>(cell))); 5307 __ mov(ip, Operand(Handle<Object>(cell)));
5310 __ ldr(ip, FieldMemOperand(ip, JSGlobalPropertyCell::kValueOffset)); 5308 __ ldr(ip, FieldMemOperand(ip, Cell::kValueOffset));
5311 __ cmp(reg, ip); 5309 __ cmp(reg, ip);
5312 } else { 5310 } else {
5313 __ cmp(reg, Operand(target)); 5311 __ cmp(reg, Operand(target));
5314 } 5312 }
5315 DeoptimizeIf(ne, instr->environment()); 5313 DeoptimizeIf(ne, instr->environment());
5316 } 5314 }
5317 5315
5318 5316
5319 void LCodeGen::DoCheckMapCommon(Register map_reg, 5317 void LCodeGen::DoCheckMapCommon(Register map_reg,
5320 Handle<Map> map, 5318 Handle<Map> map,
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5932 __ sub(scratch, result, Operand::PointerOffsetFromSmiKey(index)); 5930 __ sub(scratch, result, Operand::PointerOffsetFromSmiKey(index));
5933 __ ldr(result, FieldMemOperand(scratch, 5931 __ ldr(result, FieldMemOperand(scratch,
5934 FixedArray::kHeaderSize - kPointerSize)); 5932 FixedArray::kHeaderSize - kPointerSize));
5935 __ bind(&done); 5933 __ bind(&done);
5936 } 5934 }
5937 5935
5938 5936
5939 #undef __ 5937 #undef __
5940 5938
5941 } } // namespace v8::internal 5939 } } // namespace v8::internal
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