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Issue 716833002: Various clean-ups after top-level lexical declarations are done. (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Created 6 years, 1 month ago
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1 // Copyright 2013 the V8 project authors. All rights reserved. 1 // Copyright 2013 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_ARM64 7 #if V8_TARGET_ARCH_ARM64
8 8
9 #include "src/code-factory.h" 9 #include "src/code-factory.h"
10 #include "src/code-stubs.h" 10 #include "src/code-stubs.h"
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189 } 189 }
190 } 190 }
191 191
192 bool function_in_register_x1 = true; 192 bool function_in_register_x1 = true;
193 193
194 int heap_slots = info->scope()->num_heap_slots() - Context::MIN_CONTEXT_SLOTS; 194 int heap_slots = info->scope()->num_heap_slots() - Context::MIN_CONTEXT_SLOTS;
195 if (heap_slots > 0) { 195 if (heap_slots > 0) {
196 // Argument to NewContext is the function, which is still in x1. 196 // Argument to NewContext is the function, which is still in x1.
197 Comment cmnt(masm_, "[ Allocate context"); 197 Comment cmnt(masm_, "[ Allocate context");
198 bool need_write_barrier = true; 198 bool need_write_barrier = true;
199 if (FLAG_harmony_scoping && info->scope()->is_global_scope()) { 199 if (FLAG_harmony_scoping && info->scope()->is_script_scope()) {
200 __ Mov(x10, Operand(info->scope()->GetScopeInfo())); 200 __ Mov(x10, Operand(info->scope()->GetScopeInfo()));
201 __ Push(x1, x10); 201 __ Push(x1, x10);
202 __ CallRuntime(Runtime::kNewGlobalContext, 2); 202 __ CallRuntime(Runtime::kNewScriptContext, 2);
203 } else if (heap_slots <= FastNewContextStub::kMaximumSlots) { 203 } else if (heap_slots <= FastNewContextStub::kMaximumSlots) {
204 FastNewContextStub stub(isolate(), heap_slots); 204 FastNewContextStub stub(isolate(), heap_slots);
205 __ CallStub(&stub); 205 __ CallStub(&stub);
206 // Result of FastNewContextStub is always in new space. 206 // Result of FastNewContextStub is always in new space.
207 need_write_barrier = false; 207 need_write_barrier = false;
208 } else { 208 } else {
209 __ Push(x1); 209 __ Push(x1);
210 __ CallRuntime(Runtime::kNewFunctionContext, 1); 210 __ CallRuntime(Runtime::kNewFunctionContext, 1);
211 } 211 }
212 function_in_register_x1 = false; 212 function_in_register_x1 = false;
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927 927
928 void FullCodeGenerator::VisitModuleDeclaration(ModuleDeclaration* declaration) { 928 void FullCodeGenerator::VisitModuleDeclaration(ModuleDeclaration* declaration) {
929 Variable* variable = declaration->proxy()->var(); 929 Variable* variable = declaration->proxy()->var();
930 DCHECK(variable->location() == Variable::CONTEXT); 930 DCHECK(variable->location() == Variable::CONTEXT);
931 DCHECK(variable->interface()->IsFrozen()); 931 DCHECK(variable->interface()->IsFrozen());
932 932
933 Comment cmnt(masm_, "[ ModuleDeclaration"); 933 Comment cmnt(masm_, "[ ModuleDeclaration");
934 EmitDebugCheckDeclarationContext(variable); 934 EmitDebugCheckDeclarationContext(variable);
935 935
936 // Load instance object. 936 // Load instance object.
937 __ LoadContext(x1, scope_->ContextChainLength(scope_->GlobalScope())); 937 __ LoadContext(x1, scope_->ContextChainLength(scope_->ScriptScope()));
938 __ Ldr(x1, ContextMemOperand(x1, variable->interface()->Index())); 938 __ Ldr(x1, ContextMemOperand(x1, variable->interface()->Index()));
939 __ Ldr(x1, ContextMemOperand(x1, Context::EXTENSION_INDEX)); 939 __ Ldr(x1, ContextMemOperand(x1, Context::EXTENSION_INDEX));
940 940
941 // Assign it. 941 // Assign it.
942 __ Str(x1, ContextMemOperand(cp, variable->index())); 942 __ Str(x1, ContextMemOperand(cp, variable->index()));
943 // We know that we have written a module, which is not a smi. 943 // We know that we have written a module, which is not a smi.
944 __ RecordWriteContextSlot(cp, 944 __ RecordWriteContextSlot(cp,
945 Context::SlotOffset(variable->index()), 945 Context::SlotOffset(variable->index()),
946 x1, 946 x1,
947 x3, 947 x3,
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5104 } 5104 }
5105 5105
5106 5106
5107 void FullCodeGenerator::LoadContextField(Register dst, int context_index) { 5107 void FullCodeGenerator::LoadContextField(Register dst, int context_index) {
5108 __ Ldr(dst, ContextMemOperand(cp, context_index)); 5108 __ Ldr(dst, ContextMemOperand(cp, context_index));
5109 } 5109 }
5110 5110
5111 5111
5112 void FullCodeGenerator::PushFunctionArgumentForContextAllocation() { 5112 void FullCodeGenerator::PushFunctionArgumentForContextAllocation() {
5113 Scope* declaration_scope = scope()->DeclarationScope(); 5113 Scope* declaration_scope = scope()->DeclarationScope();
5114 if (declaration_scope->is_global_scope() || 5114 if (declaration_scope->is_script_scope() ||
5115 declaration_scope->is_module_scope()) { 5115 declaration_scope->is_module_scope()) {
5116 // Contexts nested in the native context have a canonical empty function 5116 // Contexts nested in the native context have a canonical empty function
5117 // as their closure, not the anonymous closure containing the global 5117 // as their closure, not the anonymous closure containing the global
5118 // code. Pass a smi sentinel and let the runtime look up the empty 5118 // code. Pass a smi sentinel and let the runtime look up the empty
5119 // function. 5119 // function.
5120 DCHECK(kSmiTag == 0); 5120 DCHECK(kSmiTag == 0);
5121 __ Push(xzr); 5121 __ Push(xzr);
5122 } else if (declaration_scope->is_eval_scope()) { 5122 } else if (declaration_scope->is_eval_scope()) {
5123 // Contexts created by a call to eval have the same closure as the 5123 // Contexts created by a call to eval have the same closure as the
5124 // context calling eval, not the anonymous closure containing the eval 5124 // context calling eval, not the anonymous closure containing the eval
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5323 return previous_; 5323 return previous_;
5324 } 5324 }
5325 5325
5326 5326
5327 #undef __ 5327 #undef __
5328 5328
5329 5329
5330 } } // namespace v8::internal 5330 } } // namespace v8::internal
5331 5331
5332 #endif // V8_TARGET_ARCH_ARM64 5332 #endif // V8_TARGET_ARCH_ARM64
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