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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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121 // Create a new closure from the given function info in new 121 // Create a new closure from the given function info in new
122 // space. Set the context to the current context in cp. 122 // space. Set the context to the current context in cp.
123 Counters* counters = masm->isolate()->counters(); 123 Counters* counters = masm->isolate()->counters();
124 124
125 Label gc; 125 Label gc;
126 126
127 // Pop the function info from the stack. 127 // Pop the function info from the stack.
128 __ pop(r3); 128 __ pop(r3);
129 129
130 // Attempt to allocate new JSFunction in new space. 130 // Attempt to allocate new JSFunction in new space.
131 __ AllocateInNewSpace(JSFunction::kSize, 131 __ Allocate(JSFunction::kSize, r0, r1, r2, &gc, TAG_OBJECT);
132 r0,
133 r1,
134 r2,
135 &gc,
136 TAG_OBJECT);
137 132
138 __ IncrementCounter(counters->fast_new_closure_total(), 1, r6, r7); 133 __ IncrementCounter(counters->fast_new_closure_total(), 1, r6, r7);
139 134
140 int map_index = (language_mode_ == CLASSIC_MODE) 135 int map_index = (language_mode_ == CLASSIC_MODE)
141 ? Context::FUNCTION_MAP_INDEX 136 ? Context::FUNCTION_MAP_INDEX
142 : Context::STRICT_MODE_FUNCTION_MAP_INDEX; 137 : Context::STRICT_MODE_FUNCTION_MAP_INDEX;
143 138
144 // Compute the function map in the current native context and set that 139 // Compute the function map in the current native context and set that
145 // as the map of the allocated object. 140 // as the map of the allocated object.
146 __ ldr(r2, MemOperand(cp, Context::SlotOffset(Context::GLOBAL_OBJECT_INDEX))); 141 __ ldr(r2, MemOperand(cp, Context::SlotOffset(Context::GLOBAL_OBJECT_INDEX)));
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253 __ TailCallRuntime(Runtime::kNewClosure, 3, 1); 248 __ TailCallRuntime(Runtime::kNewClosure, 3, 1);
254 } 249 }
255 250
256 251
257 void FastNewContextStub::Generate(MacroAssembler* masm) { 252 void FastNewContextStub::Generate(MacroAssembler* masm) {
258 // Try to allocate the context in new space. 253 // Try to allocate the context in new space.
259 Label gc; 254 Label gc;
260 int length = slots_ + Context::MIN_CONTEXT_SLOTS; 255 int length = slots_ + Context::MIN_CONTEXT_SLOTS;
261 256
262 // Attempt to allocate the context in new space. 257 // Attempt to allocate the context in new space.
263 __ AllocateInNewSpace(FixedArray::SizeFor(length), 258 __ Allocate(FixedArray::SizeFor(length), r0, r1, r2, &gc, TAG_OBJECT);
264 r0,
265 r1,
266 r2,
267 &gc,
268 TAG_OBJECT);
269 259
270 // Load the function from the stack. 260 // Load the function from the stack.
271 __ ldr(r3, MemOperand(sp, 0)); 261 __ ldr(r3, MemOperand(sp, 0));
272 262
273 // Set up the object header. 263 // Set up the object header.
274 __ LoadRoot(r1, Heap::kFunctionContextMapRootIndex); 264 __ LoadRoot(r1, Heap::kFunctionContextMapRootIndex);
275 __ mov(r2, Operand(Smi::FromInt(length))); 265 __ mov(r2, Operand(Smi::FromInt(length)));
276 __ str(r2, FieldMemOperand(r0, FixedArray::kLengthOffset)); 266 __ str(r2, FieldMemOperand(r0, FixedArray::kLengthOffset));
277 __ str(r1, FieldMemOperand(r0, HeapObject::kMapOffset)); 267 __ str(r1, FieldMemOperand(r0, HeapObject::kMapOffset));
278 268
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303 293
304 void FastNewBlockContextStub::Generate(MacroAssembler* masm) { 294 void FastNewBlockContextStub::Generate(MacroAssembler* masm) {
305 // Stack layout on entry: 295 // Stack layout on entry:
306 // 296 //
307 // [sp]: function. 297 // [sp]: function.
308 // [sp + kPointerSize]: serialized scope info 298 // [sp + kPointerSize]: serialized scope info
309 299
310 // Try to allocate the context in new space. 300 // Try to allocate the context in new space.
311 Label gc; 301 Label gc;
312 int length = slots_ + Context::MIN_CONTEXT_SLOTS; 302 int length = slots_ + Context::MIN_CONTEXT_SLOTS;
313 __ AllocateInNewSpace(FixedArray::SizeFor(length), 303 __ Allocate(FixedArray::SizeFor(length), r0, r1, r2, &gc, TAG_OBJECT);
314 r0, r1, r2, &gc, TAG_OBJECT);
315 304
316 // Load the function from the stack. 305 // Load the function from the stack.
317 __ ldr(r3, MemOperand(sp, 0)); 306 __ ldr(r3, MemOperand(sp, 0));
318 307
319 // Load the serialized scope info from the stack. 308 // Load the serialized scope info from the stack.
320 __ ldr(r1, MemOperand(sp, 1 * kPointerSize)); 309 __ ldr(r1, MemOperand(sp, 1 * kPointerSize));
321 310
322 // Set up the object header. 311 // Set up the object header.
323 __ LoadRoot(r2, Heap::kBlockContextMapRootIndex); 312 __ LoadRoot(r2, Heap::kBlockContextMapRootIndex);
324 __ str(r2, FieldMemOperand(r0, HeapObject::kMapOffset)); 313 __ str(r2, FieldMemOperand(r0, HeapObject::kMapOffset));
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390 size += AllocationSiteInfo::kSize; 379 size += AllocationSiteInfo::kSize;
391 } 380 }
392 size += elements_size; 381 size += elements_size;
393 382
394 // Allocate both the JS array and the elements array in one big 383 // Allocate both the JS array and the elements array in one big
395 // allocation. This avoids multiple limit checks. 384 // allocation. This avoids multiple limit checks.
396 AllocationFlags flags = TAG_OBJECT; 385 AllocationFlags flags = TAG_OBJECT;
397 if (mode == FastCloneShallowArrayStub::CLONE_DOUBLE_ELEMENTS) { 386 if (mode == FastCloneShallowArrayStub::CLONE_DOUBLE_ELEMENTS) {
398 flags = static_cast<AllocationFlags>(DOUBLE_ALIGNMENT | flags); 387 flags = static_cast<AllocationFlags>(DOUBLE_ALIGNMENT | flags);
399 } 388 }
400 __ AllocateInNewSpace(size, r0, r1, r2, fail, flags); 389 __ Allocate(size, r0, r1, r2, fail, flags);
401 390
402 if (allocation_site_mode == TRACK_ALLOCATION_SITE) { 391 if (allocation_site_mode == TRACK_ALLOCATION_SITE) {
403 __ mov(r2, Operand(Handle<Map>(masm->isolate()->heap()-> 392 __ mov(r2, Operand(Handle<Map>(masm->isolate()->heap()->
404 allocation_site_info_map()))); 393 allocation_site_info_map())));
405 __ str(r2, FieldMemOperand(r0, allocation_info_start)); 394 __ str(r2, FieldMemOperand(r0, allocation_info_start));
406 __ str(r3, FieldMemOperand(r0, allocation_info_start + kPointerSize)); 395 __ str(r3, FieldMemOperand(r0, allocation_info_start + kPointerSize));
407 } 396 }
408 397
409 // Copy the JS array part. 398 // Copy the JS array part.
410 for (int i = 0; i < JSArray::kSize; i += kPointerSize) { 399 for (int i = 0; i < JSArray::kSize; i += kPointerSize) {
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7918 7907
7919 __ Pop(lr, r5, r1); 7908 __ Pop(lr, r5, r1);
7920 __ Ret(); 7909 __ Ret();
7921 } 7910 }
7922 7911
7923 #undef __ 7912 #undef __
7924 7913
7925 } } // namespace v8::internal 7914 } } // namespace v8::internal
7926 7915
7927 #endif // V8_TARGET_ARCH_ARM 7916 #endif // V8_TARGET_ARCH_ARM
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