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Issue 190793002: Introduce FrameAndConstantPoolScope and ConstantPoolUnavailableScope. (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Sync Created 6 years, 9 months 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 // 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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164 } 164 }
165 165
166 // Open a frame scope to indicate that there is a frame on the stack. The 166 // Open a frame scope to indicate that there is a frame on the stack. The
167 // MANUAL indicates that the scope shouldn't actually generate code to set up 167 // MANUAL indicates that the scope shouldn't actually generate code to set up
168 // the frame (that is done below). 168 // the frame (that is done below).
169 FrameScope frame_scope(masm_, StackFrame::MANUAL); 169 FrameScope frame_scope(masm_, StackFrame::MANUAL);
170 170
171 info->set_prologue_offset(masm_->pc_offset()); 171 info->set_prologue_offset(masm_->pc_offset());
172 __ Prologue(BUILD_FUNCTION_FRAME); 172 __ Prologue(BUILD_FUNCTION_FRAME);
173 info->AddNoFrameRange(0, masm_->pc_offset()); 173 info->AddNoFrameRange(0, masm_->pc_offset());
174 __ LoadConstantPoolPointerRegister();
175 174
176 { Comment cmnt(masm_, "[ Allocate locals"); 175 { Comment cmnt(masm_, "[ Allocate locals");
177 int locals_count = info->scope()->num_stack_slots(); 176 int locals_count = info->scope()->num_stack_slots();
178 // Generators allocate locals, if any, in context slots. 177 // Generators allocate locals, if any, in context slots.
179 ASSERT(!info->function()->is_generator() || locals_count == 0); 178 ASSERT(!info->function()->is_generator() || locals_count == 0);
180 if (locals_count > 0) { 179 if (locals_count > 0) {
181 // Emit a loop to initialize stack cells for locals when optimizing for 180 // Emit a loop to initialize stack cells for locals when optimizing for
182 // size. Otherwise, unroll the loop for maximum performance. 181 // size. Otherwise, unroll the loop for maximum performance.
183 __ LoadRoot(r9, Heap::kUndefinedValueRootIndex); 182 __ LoadRoot(r9, Heap::kUndefinedValueRootIndex);
184 if (FLAG_optimize_for_size && locals_count > 4) { 183 if (FLAG_optimize_for_size && locals_count > 4) {
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4901 ASSERT(Memory::uint32_at(interrupt_address_pointer) == 4900 ASSERT(Memory::uint32_at(interrupt_address_pointer) ==
4902 reinterpret_cast<uint32_t>( 4901 reinterpret_cast<uint32_t>(
4903 isolate->builtins()->OsrAfterStackCheck()->entry())); 4902 isolate->builtins()->OsrAfterStackCheck()->entry()));
4904 return OSR_AFTER_STACK_CHECK; 4903 return OSR_AFTER_STACK_CHECK;
4905 } 4904 }
4906 4905
4907 4906
4908 } } // namespace v8::internal 4907 } } // namespace v8::internal
4909 4908
4910 #endif // V8_TARGET_ARCH_ARM 4909 #endif // V8_TARGET_ARCH_ARM
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