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Issue 2465253011: Fastpath some spread-call desugaring. (Closed)
Patch Set: Handles double arrays too Created 4 years, 1 month 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 #if V8_TARGET_ARCH_X87 5 #if V8_TARGET_ARCH_X87
6 6
7 #include "src/crankshaft/x87/lithium-codegen-x87.h" 7 #include "src/crankshaft/x87/lithium-codegen-x87.h"
8 8
9 #include "src/base/bits.h" 9 #include "src/base/bits.h"
10 #include "src/code-factory.h" 10 #include "src/code-factory.h"
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2893 __ cmp(result, factory()->the_hole_value()); 2893 __ cmp(result, factory()->the_hole_value());
2894 DeoptimizeIf(equal, instr, DeoptimizeReason::kHole); 2894 DeoptimizeIf(equal, instr, DeoptimizeReason::kHole);
2895 } 2895 }
2896 } else if (instr->hydrogen()->hole_mode() == CONVERT_HOLE_TO_UNDEFINED) { 2896 } else if (instr->hydrogen()->hole_mode() == CONVERT_HOLE_TO_UNDEFINED) {
2897 DCHECK(instr->hydrogen()->elements_kind() == FAST_HOLEY_ELEMENTS); 2897 DCHECK(instr->hydrogen()->elements_kind() == FAST_HOLEY_ELEMENTS);
2898 Label done; 2898 Label done;
2899 __ cmp(result, factory()->the_hole_value()); 2899 __ cmp(result, factory()->the_hole_value());
2900 __ j(not_equal, &done); 2900 __ j(not_equal, &done);
2901 if (info()->IsStub()) { 2901 if (info()->IsStub()) {
2902 // A stub can safely convert the hole to undefined only if the array 2902 // A stub can safely convert the hole to undefined only if the array
2903 // protector cell contains (Smi) Isolate::kArrayProtectorValid. 2903 // protector cell contains (Smi) Isolate::kProtectorValid.
2904 // Otherwise it needs to bail out. 2904 // Otherwise it needs to bail out.
2905 __ LoadRoot(result, Heap::kArrayProtectorRootIndex); 2905 __ LoadRoot(result, Heap::kArrayProtectorRootIndex);
2906 __ cmp(FieldOperand(result, PropertyCell::kValueOffset), 2906 __ cmp(FieldOperand(result, PropertyCell::kValueOffset),
2907 Immediate(Smi::FromInt(Isolate::kArrayProtectorValid))); 2907 Immediate(Smi::FromInt(Isolate::kProtectorValid)));
2908 DeoptimizeIf(not_equal, instr, DeoptimizeReason::kHole); 2908 DeoptimizeIf(not_equal, instr, DeoptimizeReason::kHole);
2909 } 2909 }
2910 __ mov(result, isolate()->factory()->undefined_value()); 2910 __ mov(result, isolate()->factory()->undefined_value());
2911 __ bind(&done); 2911 __ bind(&done);
2912 } 2912 }
2913 } 2913 }
2914 2914
2915 2915
2916 void LCodeGen::DoLoadKeyed(LLoadKeyed* instr) { 2916 void LCodeGen::DoLoadKeyed(LLoadKeyed* instr) {
2917 if (instr->is_fixed_typed_array()) { 2917 if (instr->is_fixed_typed_array()) {
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5639 __ bind(deferred->exit()); 5639 __ bind(deferred->exit());
5640 __ bind(&done); 5640 __ bind(&done);
5641 } 5641 }
5642 5642
5643 #undef __ 5643 #undef __
5644 5644
5645 } // namespace internal 5645 } // namespace internal
5646 } // namespace v8 5646 } // namespace v8
5647 5647
5648 #endif // V8_TARGET_ARCH_X87 5648 #endif // V8_TARGET_ARCH_X87
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