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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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3087 // -- r1 : key | 3087 // -- r1 : key |
3088 // -- r2 : receiver | 3088 // -- r2 : receiver |
3089 // -- lr : return address | 3089 // -- lr : return address |
3090 // -- r3 : scratch | 3090 // -- r3 : scratch |
3091 // ----------------------------------- | 3091 // ----------------------------------- |
3092 ElementsKind elements_kind = receiver_map->elements_kind(); | 3092 ElementsKind elements_kind = receiver_map->elements_kind(); |
3093 bool is_js_array = receiver_map->instance_type() == JS_ARRAY_TYPE; | 3093 bool is_js_array = receiver_map->instance_type() == JS_ARRAY_TYPE; |
3094 Handle<Code> stub = | 3094 Handle<Code> stub = |
3095 KeyedStoreElementStub(is_js_array, | 3095 KeyedStoreElementStub(is_js_array, |
3096 elements_kind, | 3096 elements_kind, |
3097 grow_mode_).GetCode(isolate()); | 3097 store_mode_).GetCode(isolate()); |
3098 | 3098 |
3099 __ DispatchMap(r2, r3, receiver_map, stub, DO_SMI_CHECK); | 3099 __ DispatchMap(r2, r3, receiver_map, stub, DO_SMI_CHECK); |
3100 | 3100 |
3101 Handle<Code> ic = isolate()->builtins()->KeyedStoreIC_Miss(); | 3101 Handle<Code> ic = isolate()->builtins()->KeyedStoreIC_Miss(); |
3102 __ Jump(ic, RelocInfo::CODE_TARGET); | 3102 __ Jump(ic, RelocInfo::CODE_TARGET); |
3103 | 3103 |
3104 // Return the generated code. | 3104 // Return the generated code. |
3105 return GetCode(Code::NORMAL, factory()->empty_string()); | 3105 return GetCode(Code::NORMAL, factory()->empty_string()); |
3106 } | 3106 } |
3107 | 3107 |
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3750 Handle<Code> miss_ic = | 3750 Handle<Code> miss_ic = |
3751 masm->isolate()->builtins()->KeyedStoreIC_MissForceGeneric(); | 3751 masm->isolate()->builtins()->KeyedStoreIC_MissForceGeneric(); |
3752 __ Jump(miss_ic, RelocInfo::CODE_TARGET); | 3752 __ Jump(miss_ic, RelocInfo::CODE_TARGET); |
3753 } | 3753 } |
3754 | 3754 |
3755 | 3755 |
3756 void KeyedStoreStubCompiler::GenerateStoreFastElement( | 3756 void KeyedStoreStubCompiler::GenerateStoreFastElement( |
3757 MacroAssembler* masm, | 3757 MacroAssembler* masm, |
3758 bool is_js_array, | 3758 bool is_js_array, |
3759 ElementsKind elements_kind, | 3759 ElementsKind elements_kind, |
3760 KeyedAccessGrowMode grow_mode) { | 3760 KeyedAccessStoreMode store_mode) { |
3761 // ----------- S t a t e ------------- | 3761 // ----------- S t a t e ------------- |
3762 // -- r0 : value | 3762 // -- r0 : value |
3763 // -- r1 : key | 3763 // -- r1 : key |
3764 // -- r2 : receiver | 3764 // -- r2 : receiver |
3765 // -- lr : return address | 3765 // -- lr : return address |
3766 // -- r3 : scratch | 3766 // -- r3 : scratch |
3767 // -- r4 : scratch (elements) | 3767 // -- r4 : scratch (elements) |
3768 // ----------------------------------- | 3768 // ----------------------------------- |
3769 Label miss_force_generic, transition_elements_kind, grow, slow; | 3769 Label miss_force_generic, transition_elements_kind, grow, slow; |
3770 Label finish_store, check_capacity; | 3770 Label finish_store, check_capacity; |
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3790 // Check that the key is within bounds. | 3790 // Check that the key is within bounds. |
3791 __ ldr(elements_reg, | 3791 __ ldr(elements_reg, |
3792 FieldMemOperand(receiver_reg, JSObject::kElementsOffset)); | 3792 FieldMemOperand(receiver_reg, JSObject::kElementsOffset)); |
3793 if (is_js_array) { | 3793 if (is_js_array) { |
3794 __ ldr(scratch, FieldMemOperand(receiver_reg, JSArray::kLengthOffset)); | 3794 __ ldr(scratch, FieldMemOperand(receiver_reg, JSArray::kLengthOffset)); |
3795 } else { | 3795 } else { |
3796 __ ldr(scratch, FieldMemOperand(elements_reg, FixedArray::kLengthOffset)); | 3796 __ ldr(scratch, FieldMemOperand(elements_reg, FixedArray::kLengthOffset)); |
3797 } | 3797 } |
3798 // Compare smis. | 3798 // Compare smis. |
3799 __ cmp(key_reg, scratch); | 3799 __ cmp(key_reg, scratch); |
3800 if (is_js_array && grow_mode == ALLOW_JSARRAY_GROWTH) { | 3800 if (is_js_array && IsGrowStoreMode(store_mode)) { |
3801 __ b(hs, &grow); | 3801 __ b(hs, &grow); |
3802 } else { | 3802 } else { |
3803 __ b(hs, &miss_force_generic); | 3803 __ b(hs, &miss_force_generic); |
3804 } | 3804 } |
3805 | 3805 |
3806 // Make sure elements is a fast element array, not 'cow'. | 3806 // Make sure elements is a fast element array, not 'cow'. |
3807 __ CheckMap(elements_reg, | 3807 __ CheckMap(elements_reg, |
3808 scratch, | 3808 scratch, |
3809 Heap::kFixedArrayMapRootIndex, | 3809 Heap::kFixedArrayMapRootIndex, |
3810 &miss_force_generic, | 3810 &miss_force_generic, |
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3843 | 3843 |
3844 __ bind(&miss_force_generic); | 3844 __ bind(&miss_force_generic); |
3845 Handle<Code> ic = | 3845 Handle<Code> ic = |
3846 masm->isolate()->builtins()->KeyedStoreIC_MissForceGeneric(); | 3846 masm->isolate()->builtins()->KeyedStoreIC_MissForceGeneric(); |
3847 __ Jump(ic, RelocInfo::CODE_TARGET); | 3847 __ Jump(ic, RelocInfo::CODE_TARGET); |
3848 | 3848 |
3849 __ bind(&transition_elements_kind); | 3849 __ bind(&transition_elements_kind); |
3850 Handle<Code> ic_miss = masm->isolate()->builtins()->KeyedStoreIC_Miss(); | 3850 Handle<Code> ic_miss = masm->isolate()->builtins()->KeyedStoreIC_Miss(); |
3851 __ Jump(ic_miss, RelocInfo::CODE_TARGET); | 3851 __ Jump(ic_miss, RelocInfo::CODE_TARGET); |
3852 | 3852 |
3853 if (is_js_array && grow_mode == ALLOW_JSARRAY_GROWTH) { | 3853 if (is_js_array && IsGrowStoreMode(store_mode)) { |
3854 // Grow the array by a single element if possible. | 3854 // Grow the array by a single element if possible. |
3855 __ bind(&grow); | 3855 __ bind(&grow); |
3856 | 3856 |
3857 // Make sure the array is only growing by a single element, anything else | 3857 // Make sure the array is only growing by a single element, anything else |
3858 // must be handled by the runtime. Flags already set by previous compare. | 3858 // must be handled by the runtime. Flags already set by previous compare. |
3859 __ b(ne, &miss_force_generic); | 3859 __ b(ne, &miss_force_generic); |
3860 | 3860 |
3861 // Check for the empty array, and preallocate a small backing store if | 3861 // Check for the empty array, and preallocate a small backing store if |
3862 // possible. | 3862 // possible. |
3863 __ ldr(length_reg, | 3863 __ ldr(length_reg, |
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3915 __ bind(&slow); | 3915 __ bind(&slow); |
3916 Handle<Code> ic_slow = masm->isolate()->builtins()->KeyedStoreIC_Slow(); | 3916 Handle<Code> ic_slow = masm->isolate()->builtins()->KeyedStoreIC_Slow(); |
3917 __ Jump(ic_slow, RelocInfo::CODE_TARGET); | 3917 __ Jump(ic_slow, RelocInfo::CODE_TARGET); |
3918 } | 3918 } |
3919 } | 3919 } |
3920 | 3920 |
3921 | 3921 |
3922 void KeyedStoreStubCompiler::GenerateStoreFastDoubleElement( | 3922 void KeyedStoreStubCompiler::GenerateStoreFastDoubleElement( |
3923 MacroAssembler* masm, | 3923 MacroAssembler* masm, |
3924 bool is_js_array, | 3924 bool is_js_array, |
3925 KeyedAccessGrowMode grow_mode) { | 3925 KeyedAccessStoreMode store_mode) { |
3926 // ----------- S t a t e ------------- | 3926 // ----------- S t a t e ------------- |
3927 // -- r0 : value | 3927 // -- r0 : value |
3928 // -- r1 : key | 3928 // -- r1 : key |
3929 // -- r2 : receiver | 3929 // -- r2 : receiver |
3930 // -- lr : return address | 3930 // -- lr : return address |
3931 // -- r3 : scratch (elements backing store) | 3931 // -- r3 : scratch (elements backing store) |
3932 // -- r4 : scratch | 3932 // -- r4 : scratch |
3933 // -- r5 : scratch | 3933 // -- r5 : scratch |
3934 // -- r6 : scratch | 3934 // -- r6 : scratch |
3935 // -- r7 : scratch | 3935 // -- r7 : scratch |
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3961 // Check that the key is within bounds. | 3961 // Check that the key is within bounds. |
3962 if (is_js_array) { | 3962 if (is_js_array) { |
3963 __ ldr(scratch1, FieldMemOperand(receiver_reg, JSArray::kLengthOffset)); | 3963 __ ldr(scratch1, FieldMemOperand(receiver_reg, JSArray::kLengthOffset)); |
3964 } else { | 3964 } else { |
3965 __ ldr(scratch1, | 3965 __ ldr(scratch1, |
3966 FieldMemOperand(elements_reg, FixedArray::kLengthOffset)); | 3966 FieldMemOperand(elements_reg, FixedArray::kLengthOffset)); |
3967 } | 3967 } |
3968 // Compare smis, unsigned compare catches both negative and out-of-bound | 3968 // Compare smis, unsigned compare catches both negative and out-of-bound |
3969 // indexes. | 3969 // indexes. |
3970 __ cmp(key_reg, scratch1); | 3970 __ cmp(key_reg, scratch1); |
3971 if (grow_mode == ALLOW_JSARRAY_GROWTH) { | 3971 if (IsGrowStoreMode(store_mode)) { |
3972 __ b(hs, &grow); | 3972 __ b(hs, &grow); |
3973 } else { | 3973 } else { |
3974 __ b(hs, &miss_force_generic); | 3974 __ b(hs, &miss_force_generic); |
3975 } | 3975 } |
3976 | 3976 |
3977 __ bind(&finish_store); | 3977 __ bind(&finish_store); |
3978 __ StoreNumberToDoubleElements(value_reg, | 3978 __ StoreNumberToDoubleElements(value_reg, |
3979 key_reg, | 3979 key_reg, |
3980 // All registers after this are overwritten. | 3980 // All registers after this are overwritten. |
3981 elements_reg, | 3981 elements_reg, |
3982 scratch1, | 3982 scratch1, |
3983 scratch2, | 3983 scratch2, |
3984 scratch3, | 3984 scratch3, |
3985 scratch4, | 3985 scratch4, |
3986 &transition_elements_kind); | 3986 &transition_elements_kind); |
3987 __ Ret(); | 3987 __ Ret(); |
3988 | 3988 |
3989 // Handle store cache miss, replacing the ic with the generic stub. | 3989 // Handle store cache miss, replacing the ic with the generic stub. |
3990 __ bind(&miss_force_generic); | 3990 __ bind(&miss_force_generic); |
3991 Handle<Code> ic = | 3991 Handle<Code> ic = |
3992 masm->isolate()->builtins()->KeyedStoreIC_MissForceGeneric(); | 3992 masm->isolate()->builtins()->KeyedStoreIC_MissForceGeneric(); |
3993 __ Jump(ic, RelocInfo::CODE_TARGET); | 3993 __ Jump(ic, RelocInfo::CODE_TARGET); |
3994 | 3994 |
3995 __ bind(&transition_elements_kind); | 3995 __ bind(&transition_elements_kind); |
3996 Handle<Code> ic_miss = masm->isolate()->builtins()->KeyedStoreIC_Miss(); | 3996 Handle<Code> ic_miss = masm->isolate()->builtins()->KeyedStoreIC_Miss(); |
3997 __ Jump(ic_miss, RelocInfo::CODE_TARGET); | 3997 __ Jump(ic_miss, RelocInfo::CODE_TARGET); |
3998 | 3998 |
3999 if (is_js_array && grow_mode == ALLOW_JSARRAY_GROWTH) { | 3999 if (is_js_array && IsGrowStoreMode(store_mode)) { |
4000 // Grow the array by a single element if possible. | 4000 // Grow the array by a single element if possible. |
4001 __ bind(&grow); | 4001 __ bind(&grow); |
4002 | 4002 |
4003 // Make sure the array is only growing by a single element, anything else | 4003 // Make sure the array is only growing by a single element, anything else |
4004 // must be handled by the runtime. Flags already set by previous compare. | 4004 // must be handled by the runtime. Flags already set by previous compare. |
4005 __ b(ne, &miss_force_generic); | 4005 __ b(ne, &miss_force_generic); |
4006 | 4006 |
4007 // Transition on values that can't be stored in a FixedDoubleArray. | 4007 // Transition on values that can't be stored in a FixedDoubleArray. |
4008 Label value_is_smi; | 4008 Label value_is_smi; |
4009 __ JumpIfSmi(value_reg, &value_is_smi); | 4009 __ JumpIfSmi(value_reg, &value_is_smi); |
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4083 __ Jump(ic_slow, RelocInfo::CODE_TARGET); | 4083 __ Jump(ic_slow, RelocInfo::CODE_TARGET); |
4084 } | 4084 } |
4085 } | 4085 } |
4086 | 4086 |
4087 | 4087 |
4088 #undef __ | 4088 #undef __ |
4089 | 4089 |
4090 } } // namespace v8::internal | 4090 } } // namespace v8::internal |
4091 | 4091 |
4092 #endif // V8_TARGET_ARCH_ARM | 4092 #endif // V8_TARGET_ARCH_ARM |
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