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Issue 779843002: X87: Use weak cells to embed maps in store handler. (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: Created 6 years 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 "src/v8.h" 5 #include "src/v8.h"
6 6
7 #if V8_TARGET_ARCH_X87 7 #if V8_TARGET_ARCH_X87
8 8
9 #include "src/base/bits.h" 9 #include "src/base/bits.h"
10 #include "src/base/division-by-constant.h" 10 #include "src/base/division-by-constant.h"
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3080 IsOnEvacuationCandidate(*map)); 3080 IsOnEvacuationCandidate(*map));
3081 if (mask < (1 << kBitsPerByte)) { 3081 if (mask < (1 << kBitsPerByte)) {
3082 test_b(Operand::StaticVariable(reference), static_cast<uint8_t>(mask)); 3082 test_b(Operand::StaticVariable(reference), static_cast<uint8_t>(mask));
3083 } else { 3083 } else {
3084 test(Operand::StaticVariable(reference), Immediate(mask)); 3084 test(Operand::StaticVariable(reference), Immediate(mask));
3085 } 3085 }
3086 j(cc, condition_met, condition_met_distance); 3086 j(cc, condition_met, condition_met_distance);
3087 } 3087 }
3088 3088
3089 3089
3090 void MacroAssembler::CheckMapDeprecated(Handle<Map> map,
3091 Register scratch,
3092 Label* if_deprecated) {
3093 if (map->CanBeDeprecated()) {
3094 mov(scratch, map);
3095 mov(scratch, FieldOperand(scratch, Map::kBitField3Offset));
3096 and_(scratch, Immediate(Map::Deprecated::kMask));
3097 j(not_zero, if_deprecated);
3098 }
3099 }
3100
3101
3102 void MacroAssembler::JumpIfBlack(Register object, 3090 void MacroAssembler::JumpIfBlack(Register object,
3103 Register scratch0, 3091 Register scratch0,
3104 Register scratch1, 3092 Register scratch1,
3105 Label* on_black, 3093 Label* on_black,
3106 Label::Distance on_black_near) { 3094 Label::Distance on_black_near) {
3107 HasColor(object, scratch0, scratch1, 3095 HasColor(object, scratch0, scratch1,
3108 on_black, on_black_near, 3096 on_black, on_black_near,
3109 1, 0); // kBlackBitPattern. 3097 1, 0); // kBlackBitPattern.
3110 DCHECK(strcmp(Marking::kBlackBitPattern, "10") == 0); 3098 DCHECK(strcmp(Marking::kBlackBitPattern, "10") == 0);
3111 } 3099 }
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3377 if (mag.shift > 0) sar(edx, mag.shift); 3365 if (mag.shift > 0) sar(edx, mag.shift);
3378 mov(eax, dividend); 3366 mov(eax, dividend);
3379 shr(eax, 31); 3367 shr(eax, 31);
3380 add(edx, eax); 3368 add(edx, eax);
3381 } 3369 }
3382 3370
3383 3371
3384 } } // namespace v8::internal 3372 } } // namespace v8::internal
3385 3373
3386 #endif // V8_TARGET_ARCH_X87 3374 #endif // V8_TARGET_ARCH_X87
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