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Issue 2091733002: 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: Address comments. Created 4 years, 5 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 // Use of this source code is governed by a BSD-style license that can be 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 #include <limits.h> // For LONG_MIN, LONG_MAX. 5 #include <limits.h> // For LONG_MIN, LONG_MAX.
6 6
7 #if V8_TARGET_ARCH_MIPS64 7 #if V8_TARGET_ARCH_MIPS64
8 8
9 #include "src/base/division-by-constant.h" 9 #include "src/base/division-by-constant.h"
10 #include "src/bootstrapper.h" 10 #include "src/bootstrapper.h"
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1588 if (kArchVariant == kMips64r6) { 1588 if (kArchVariant == kMips64r6) {
1589 sdc1(fd, rs); 1589 sdc1(fd, rs);
1590 } else { 1590 } else {
1591 DCHECK(kArchVariant == kMips64r2); 1591 DCHECK(kArchVariant == kMips64r2);
1592 dmfc1(scratch, fd); 1592 dmfc1(scratch, fd);
1593 Usd(scratch, rs); 1593 Usd(scratch, rs);
1594 } 1594 }
1595 } 1595 }
1596 1596
1597 void MacroAssembler::li(Register dst, Handle<Object> value, LiFlags mode) { 1597 void MacroAssembler::li(Register dst, Handle<Object> value, LiFlags mode) {
1598 AllowDeferredHandleDereference smi_check; 1598 li(dst, Operand(value), mode);
1599 if (value->IsSmi()) {
1600 li(dst, Operand(value), mode);
1601 } else {
1602 DCHECK(value->IsHeapObject());
1603 if (isolate()->heap()->InNewSpace(*value)) {
1604 Handle<Cell> cell = isolate()->factory()->NewCell(value);
1605 li(dst, Operand(cell));
1606 ld(dst, FieldMemOperand(dst, Cell::kValueOffset));
1607 } else {
1608 li(dst, Operand(value));
1609 }
1610 }
1611 } 1599 }
1612 1600
1613 static inline int64_t ShiftAndFixSignExtension(int64_t imm, int bitnum) { 1601 static inline int64_t ShiftAndFixSignExtension(int64_t imm, int bitnum) {
1614 if ((imm >> (bitnum - 1)) & 0x1) { 1602 if ((imm >> (bitnum - 1)) & 0x1) {
1615 imm = (imm >> bitnum) + 1; 1603 imm = (imm >> bitnum) + 1;
1616 } else { 1604 } else {
1617 imm = imm >> bitnum; 1605 imm = imm >> bitnum;
1618 } 1606 }
1619 return imm; 1607 return imm;
1620 } 1608 }
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7218 if (mag.shift > 0) sra(result, result, mag.shift); 7206 if (mag.shift > 0) sra(result, result, mag.shift);
7219 srl(at, dividend, 31); 7207 srl(at, dividend, 31);
7220 Addu(result, result, Operand(at)); 7208 Addu(result, result, Operand(at));
7221 } 7209 }
7222 7210
7223 7211
7224 } // namespace internal 7212 } // namespace internal
7225 } // namespace v8 7213 } // namespace v8
7226 7214
7227 #endif // V8_TARGET_ARCH_MIPS64 7215 #endif // V8_TARGET_ARCH_MIPS64
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