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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: Patch for landing Created 6 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 #include "src/v8.h" 5 #include "src/v8.h"
6 6
7 #if V8_TARGET_ARCH_MIPS 7 #if V8_TARGET_ARCH_MIPS
8 8
9 // Note on Mips implementation: 9 // Note on Mips implementation:
10 // 10 //
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197 } 197 }
198 198
199 bool function_in_register = true; 199 bool function_in_register = true;
200 200
201 // Possibly allocate a local context. 201 // Possibly allocate a local context.
202 int heap_slots = info->scope()->num_heap_slots() - Context::MIN_CONTEXT_SLOTS; 202 int heap_slots = info->scope()->num_heap_slots() - Context::MIN_CONTEXT_SLOTS;
203 if (heap_slots > 0) { 203 if (heap_slots > 0) {
204 Comment cmnt(masm_, "[ Allocate context"); 204 Comment cmnt(masm_, "[ Allocate context");
205 // Argument to NewContext is the function, which is still in a1. 205 // Argument to NewContext is the function, which is still in a1.
206 bool need_write_barrier = true; 206 bool need_write_barrier = true;
207 if (FLAG_harmony_scoping && info->scope()->is_global_scope()) { 207 if (FLAG_harmony_scoping && info->scope()->is_script_scope()) {
208 __ push(a1); 208 __ push(a1);
209 __ Push(info->scope()->GetScopeInfo()); 209 __ Push(info->scope()->GetScopeInfo());
210 __ CallRuntime(Runtime::kNewGlobalContext, 2); 210 __ CallRuntime(Runtime::kNewScriptContext, 2);
211 } else if (heap_slots <= FastNewContextStub::kMaximumSlots) { 211 } else if (heap_slots <= FastNewContextStub::kMaximumSlots) {
212 FastNewContextStub stub(isolate(), heap_slots); 212 FastNewContextStub stub(isolate(), heap_slots);
213 __ CallStub(&stub); 213 __ CallStub(&stub);
214 // Result of FastNewContextStub is always in new space. 214 // Result of FastNewContextStub is always in new space.
215 need_write_barrier = false; 215 need_write_barrier = false;
216 } else { 216 } else {
217 __ push(a1); 217 __ push(a1);
218 __ CallRuntime(Runtime::kNewFunctionContext, 1); 218 __ CallRuntime(Runtime::kNewFunctionContext, 1);
219 } 219 }
220 function_in_register = false; 220 function_in_register = false;
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922 922
923 void FullCodeGenerator::VisitModuleDeclaration(ModuleDeclaration* declaration) { 923 void FullCodeGenerator::VisitModuleDeclaration(ModuleDeclaration* declaration) {
924 Variable* variable = declaration->proxy()->var(); 924 Variable* variable = declaration->proxy()->var();
925 DCHECK(variable->location() == Variable::CONTEXT); 925 DCHECK(variable->location() == Variable::CONTEXT);
926 DCHECK(variable->interface()->IsFrozen()); 926 DCHECK(variable->interface()->IsFrozen());
927 927
928 Comment cmnt(masm_, "[ ModuleDeclaration"); 928 Comment cmnt(masm_, "[ ModuleDeclaration");
929 EmitDebugCheckDeclarationContext(variable); 929 EmitDebugCheckDeclarationContext(variable);
930 930
931 // Load instance object. 931 // Load instance object.
932 __ LoadContext(a1, scope_->ContextChainLength(scope_->GlobalScope())); 932 __ LoadContext(a1, scope_->ContextChainLength(scope_->ScriptScope()));
933 __ lw(a1, ContextOperand(a1, variable->interface()->Index())); 933 __ lw(a1, ContextOperand(a1, variable->interface()->Index()));
934 __ lw(a1, ContextOperand(a1, Context::EXTENSION_INDEX)); 934 __ lw(a1, ContextOperand(a1, Context::EXTENSION_INDEX));
935 935
936 // Assign it. 936 // Assign it.
937 __ sw(a1, ContextOperand(cp, variable->index())); 937 __ sw(a1, ContextOperand(cp, variable->index()));
938 // We know that we have written a module, which is not a smi. 938 // We know that we have written a module, which is not a smi.
939 __ RecordWriteContextSlot(cp, 939 __ RecordWriteContextSlot(cp,
940 Context::SlotOffset(variable->index()), 940 Context::SlotOffset(variable->index()),
941 a1, 941 a1,
942 a3, 942 a3,
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5038 } 5038 }
5039 5039
5040 5040
5041 void FullCodeGenerator::LoadContextField(Register dst, int context_index) { 5041 void FullCodeGenerator::LoadContextField(Register dst, int context_index) {
5042 __ lw(dst, ContextOperand(cp, context_index)); 5042 __ lw(dst, ContextOperand(cp, context_index));
5043 } 5043 }
5044 5044
5045 5045
5046 void FullCodeGenerator::PushFunctionArgumentForContextAllocation() { 5046 void FullCodeGenerator::PushFunctionArgumentForContextAllocation() {
5047 Scope* declaration_scope = scope()->DeclarationScope(); 5047 Scope* declaration_scope = scope()->DeclarationScope();
5048 if (declaration_scope->is_global_scope() || 5048 if (declaration_scope->is_script_scope() ||
5049 declaration_scope->is_module_scope()) { 5049 declaration_scope->is_module_scope()) {
5050 // Contexts nested in the native context have a canonical empty function 5050 // Contexts nested in the native context have a canonical empty function
5051 // as their closure, not the anonymous closure containing the global 5051 // as their closure, not the anonymous closure containing the global
5052 // code. Pass a smi sentinel and let the runtime look up the empty 5052 // code. Pass a smi sentinel and let the runtime look up the empty
5053 // function. 5053 // function.
5054 __ li(at, Operand(Smi::FromInt(0))); 5054 __ li(at, Operand(Smi::FromInt(0)));
5055 } else if (declaration_scope->is_eval_scope()) { 5055 } else if (declaration_scope->is_eval_scope()) {
5056 // Contexts created by a call to eval have the same closure as the 5056 // Contexts created by a call to eval have the same closure as the
5057 // context calling eval, not the anonymous closure containing the eval 5057 // context calling eval, not the anonymous closure containing the eval
5058 // code. Fetch it from the context. 5058 // code. Fetch it from the context.
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5240 Assembler::target_address_at(pc_immediate_load_address)) == 5240 Assembler::target_address_at(pc_immediate_load_address)) ==
5241 reinterpret_cast<uint32_t>( 5241 reinterpret_cast<uint32_t>(
5242 isolate->builtins()->OsrAfterStackCheck()->entry())); 5242 isolate->builtins()->OsrAfterStackCheck()->entry()));
5243 return OSR_AFTER_STACK_CHECK; 5243 return OSR_AFTER_STACK_CHECK;
5244 } 5244 }
5245 5245
5246 5246
5247 } } // namespace v8::internal 5247 } } // namespace v8::internal
5248 5248
5249 #endif // V8_TARGET_ARCH_MIPS 5249 #endif // V8_TARGET_ARCH_MIPS
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