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Issue 12314155: Allow direct allocation in old pointer space. (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Created 7 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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159 // Create a new closure from the given function info in new 159 // Create a new closure from the given function info in new
160 // space. Set the context to the current context in cp. 160 // space. Set the context to the current context in cp.
161 Counters* counters = masm->isolate()->counters(); 161 Counters* counters = masm->isolate()->counters();
162 162
163 Label gc; 163 Label gc;
164 164
165 // Pop the function info from the stack. 165 // Pop the function info from the stack.
166 __ pop(r3); 166 __ pop(r3);
167 167
168 // Attempt to allocate new JSFunction in new space. 168 // Attempt to allocate new JSFunction in new space.
169 __ AllocateInNewSpace(JSFunction::kSize, 169 __ Allocate(JSFunction::kSize, r0, r1, r2, &gc, TAG_OBJECT);
170 r0,
171 r1,
172 r2,
173 &gc,
174 TAG_OBJECT);
175 170
176 __ IncrementCounter(counters->fast_new_closure_total(), 1, r6, r7); 171 __ IncrementCounter(counters->fast_new_closure_total(), 1, r6, r7);
177 172
178 int map_index = (language_mode_ == CLASSIC_MODE) 173 int map_index = (language_mode_ == CLASSIC_MODE)
179 ? Context::FUNCTION_MAP_INDEX 174 ? Context::FUNCTION_MAP_INDEX
180 : Context::STRICT_MODE_FUNCTION_MAP_INDEX; 175 : Context::STRICT_MODE_FUNCTION_MAP_INDEX;
181 176
182 // Compute the function map in the current native context and set that 177 // Compute the function map in the current native context and set that
183 // as the map of the allocated object. 178 // as the map of the allocated object.
184 __ ldr(r2, MemOperand(cp, Context::SlotOffset(Context::GLOBAL_OBJECT_INDEX))); 179 __ ldr(r2, MemOperand(cp, Context::SlotOffset(Context::GLOBAL_OBJECT_INDEX)));
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291 __ TailCallRuntime(Runtime::kNewClosure, 3, 1); 286 __ TailCallRuntime(Runtime::kNewClosure, 3, 1);
292 } 287 }
293 288
294 289
295 void FastNewContextStub::Generate(MacroAssembler* masm) { 290 void FastNewContextStub::Generate(MacroAssembler* masm) {
296 // Try to allocate the context in new space. 291 // Try to allocate the context in new space.
297 Label gc; 292 Label gc;
298 int length = slots_ + Context::MIN_CONTEXT_SLOTS; 293 int length = slots_ + Context::MIN_CONTEXT_SLOTS;
299 294
300 // Attempt to allocate the context in new space. 295 // Attempt to allocate the context in new space.
301 __ AllocateInNewSpace(FixedArray::SizeFor(length), 296 __ Allocate(FixedArray::SizeFor(length), r0, r1, r2, &gc, TAG_OBJECT);
302 r0,
303 r1,
304 r2,
305 &gc,
306 TAG_OBJECT);
307 297
308 // Load the function from the stack. 298 // Load the function from the stack.
309 __ ldr(r3, MemOperand(sp, 0)); 299 __ ldr(r3, MemOperand(sp, 0));
310 300
311 // Set up the object header. 301 // Set up the object header.
312 __ LoadRoot(r1, Heap::kFunctionContextMapRootIndex); 302 __ LoadRoot(r1, Heap::kFunctionContextMapRootIndex);
313 __ mov(r2, Operand(Smi::FromInt(length))); 303 __ mov(r2, Operand(Smi::FromInt(length)));
314 __ str(r2, FieldMemOperand(r0, FixedArray::kLengthOffset)); 304 __ str(r2, FieldMemOperand(r0, FixedArray::kLengthOffset));
315 __ str(r1, FieldMemOperand(r0, HeapObject::kMapOffset)); 305 __ str(r1, FieldMemOperand(r0, HeapObject::kMapOffset));
316 306
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341 331
342 void FastNewBlockContextStub::Generate(MacroAssembler* masm) { 332 void FastNewBlockContextStub::Generate(MacroAssembler* masm) {
343 // Stack layout on entry: 333 // Stack layout on entry:
344 // 334 //
345 // [sp]: function. 335 // [sp]: function.
346 // [sp + kPointerSize]: serialized scope info 336 // [sp + kPointerSize]: serialized scope info
347 337
348 // Try to allocate the context in new space. 338 // Try to allocate the context in new space.
349 Label gc; 339 Label gc;
350 int length = slots_ + Context::MIN_CONTEXT_SLOTS; 340 int length = slots_ + Context::MIN_CONTEXT_SLOTS;
351 __ AllocateInNewSpace(FixedArray::SizeFor(length), 341 __ Allocate(FixedArray::SizeFor(length), r0, r1, r2, &gc, TAG_OBJECT);
352 r0, r1, r2, &gc, TAG_OBJECT);
353 342
354 // Load the function from the stack. 343 // Load the function from the stack.
355 __ ldr(r3, MemOperand(sp, 0)); 344 __ ldr(r3, MemOperand(sp, 0));
356 345
357 // Load the serialized scope info from the stack. 346 // Load the serialized scope info from the stack.
358 __ ldr(r1, MemOperand(sp, 1 * kPointerSize)); 347 __ ldr(r1, MemOperand(sp, 1 * kPointerSize));
359 348
360 // Set up the object header. 349 // Set up the object header.
361 __ LoadRoot(r2, Heap::kBlockContextMapRootIndex); 350 __ LoadRoot(r2, Heap::kBlockContextMapRootIndex);
362 __ str(r2, FieldMemOperand(r0, HeapObject::kMapOffset)); 351 __ str(r2, FieldMemOperand(r0, HeapObject::kMapOffset));
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428 size += AllocationSiteInfo::kSize; 417 size += AllocationSiteInfo::kSize;
429 } 418 }
430 size += elements_size; 419 size += elements_size;
431 420
432 // Allocate both the JS array and the elements array in one big 421 // Allocate both the JS array and the elements array in one big
433 // allocation. This avoids multiple limit checks. 422 // allocation. This avoids multiple limit checks.
434 AllocationFlags flags = TAG_OBJECT; 423 AllocationFlags flags = TAG_OBJECT;
435 if (mode == FastCloneShallowArrayStub::CLONE_DOUBLE_ELEMENTS) { 424 if (mode == FastCloneShallowArrayStub::CLONE_DOUBLE_ELEMENTS) {
436 flags = static_cast<AllocationFlags>(DOUBLE_ALIGNMENT | flags); 425 flags = static_cast<AllocationFlags>(DOUBLE_ALIGNMENT | flags);
437 } 426 }
438 __ AllocateInNewSpace(size, r0, r1, r2, fail, flags); 427 __ Allocate(size, r0, r1, r2, fail, flags);
439 428
440 if (allocation_site_mode == TRACK_ALLOCATION_SITE) { 429 if (allocation_site_mode == TRACK_ALLOCATION_SITE) {
441 __ mov(r2, Operand(Handle<Map>(masm->isolate()->heap()-> 430 __ mov(r2, Operand(Handle<Map>(masm->isolate()->heap()->
442 allocation_site_info_map()))); 431 allocation_site_info_map())));
443 __ str(r2, FieldMemOperand(r0, allocation_info_start)); 432 __ str(r2, FieldMemOperand(r0, allocation_info_start));
444 __ str(r3, FieldMemOperand(r0, allocation_info_start + kPointerSize)); 433 __ str(r3, FieldMemOperand(r0, allocation_info_start + kPointerSize));
445 } 434 }
446 435
447 // Copy the JS array part. 436 // Copy the JS array part.
448 for (int i = 0; i < JSArray::kSize; i += kPointerSize) { 437 for (int i = 0; i < JSArray::kSize; i += kPointerSize) {
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8087 8076
8088 __ Pop(lr, r5, r1); 8077 __ Pop(lr, r5, r1);
8089 __ Ret(); 8078 __ Ret();
8090 } 8079 }
8091 8080
8092 #undef __ 8081 #undef __
8093 8082
8094 } } // namespace v8::internal 8083 } } // namespace v8::internal
8095 8084
8096 #endif // V8_TARGET_ARCH_ARM 8085 #endif // V8_TARGET_ARCH_ARM
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