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Issue 12521011: Compile FastCloneShallowArrayStub using Crankshaft. (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Rebased. Created 7 years, 8 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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5602 __ mov(ebx, FieldOperand(eax, HeapObject::kMapOffset)); 5602 __ mov(ebx, FieldOperand(eax, HeapObject::kMapOffset));
5603 // Load the map's "bit field 2". We only need the first byte, 5603 // Load the map's "bit field 2". We only need the first byte,
5604 // but the following masking takes care of that anyway. 5604 // but the following masking takes care of that anyway.
5605 __ mov(ebx, FieldOperand(ebx, Map::kBitField2Offset)); 5605 __ mov(ebx, FieldOperand(ebx, Map::kBitField2Offset));
5606 // Retrieve elements_kind from bit field 2. 5606 // Retrieve elements_kind from bit field 2.
5607 __ and_(ebx, Map::kElementsKindMask); 5607 __ and_(ebx, Map::kElementsKindMask);
5608 __ cmp(ebx, boilerplate_elements_kind << Map::kElementsKindShift); 5608 __ cmp(ebx, boilerplate_elements_kind << Map::kElementsKindShift);
5609 DeoptimizeIf(not_equal, instr->environment()); 5609 DeoptimizeIf(not_equal, instr->environment());
5610 } 5610 }
5611 5611
5612 // Set up the parameters to the stub/runtime call. 5612 // Set up the parameters to the stub/runtime call and pick the right
5613 __ PushHeapObject(literals); 5613 // runtime function or stub to call. Boilerplate already exists,
5614 __ push(Immediate(Smi::FromInt(instr->hydrogen()->literal_index()))); 5614 // constant elements are never accessed, pass an empty fixed array.
5615 // Boilerplate already exists, constant elements are never accessed.
5616 // Pass an empty fixed array.
5617 __ push(Immediate(isolate()->factory()->empty_fixed_array()));
5618
5619 // Pick the right runtime function or stub to call.
5620 int length = instr->hydrogen()->length(); 5615 int length = instr->hydrogen()->length();
5621 if (instr->hydrogen()->IsCopyOnWrite()) { 5616 if (instr->hydrogen()->IsCopyOnWrite()) {
5622 ASSERT(instr->hydrogen()->depth() == 1); 5617 ASSERT(instr->hydrogen()->depth() == 1);
5618 __ LoadHeapObject(eax, literals);
5619 __ mov(ebx, Immediate(Smi::FromInt(instr->hydrogen()->literal_index())));
5620 __ mov(ecx, Immediate(isolate()->factory()->empty_fixed_array()));
5623 FastCloneShallowArrayStub::Mode mode = 5621 FastCloneShallowArrayStub::Mode mode =
5624 FastCloneShallowArrayStub::COPY_ON_WRITE_ELEMENTS; 5622 FastCloneShallowArrayStub::COPY_ON_WRITE_ELEMENTS;
5625 FastCloneShallowArrayStub stub(mode, DONT_TRACK_ALLOCATION_SITE, length); 5623 FastCloneShallowArrayStub stub(mode, DONT_TRACK_ALLOCATION_SITE, length);
5626 CallCode(stub.GetCode(isolate()), RelocInfo::CODE_TARGET, instr); 5624 CallCode(stub.GetCode(isolate()), RelocInfo::CODE_TARGET, instr);
5627 } else if (instr->hydrogen()->depth() > 1) { 5625 } else if (instr->hydrogen()->depth() > 1) {
5626 __ PushHeapObject(literals);
5627 __ push(Immediate(Smi::FromInt(instr->hydrogen()->literal_index())));
5628 __ push(Immediate(isolate()->factory()->empty_fixed_array()));
5628 CallRuntime(Runtime::kCreateArrayLiteral, 3, instr); 5629 CallRuntime(Runtime::kCreateArrayLiteral, 3, instr);
5629 } else if (length > FastCloneShallowArrayStub::kMaximumClonedLength) { 5630 } else if (length > FastCloneShallowArrayStub::kMaximumClonedLength) {
5631 __ PushHeapObject(literals);
5632 __ push(Immediate(Smi::FromInt(instr->hydrogen()->literal_index())));
5633 __ push(Immediate(isolate()->factory()->empty_fixed_array()));
5630 CallRuntime(Runtime::kCreateArrayLiteralShallow, 3, instr); 5634 CallRuntime(Runtime::kCreateArrayLiteralShallow, 3, instr);
5631 } else { 5635 } else {
5636 __ LoadHeapObject(eax, literals);
5637 __ mov(ebx, Immediate(Smi::FromInt(instr->hydrogen()->literal_index())));
5638 __ mov(ecx, Immediate(isolate()->factory()->empty_fixed_array()));
5632 FastCloneShallowArrayStub::Mode mode = 5639 FastCloneShallowArrayStub::Mode mode =
5633 boilerplate_elements_kind == FAST_DOUBLE_ELEMENTS 5640 boilerplate_elements_kind == FAST_DOUBLE_ELEMENTS
5634 ? FastCloneShallowArrayStub::CLONE_DOUBLE_ELEMENTS 5641 ? FastCloneShallowArrayStub::CLONE_DOUBLE_ELEMENTS
5635 : FastCloneShallowArrayStub::CLONE_ELEMENTS; 5642 : FastCloneShallowArrayStub::CLONE_ELEMENTS;
5636 FastCloneShallowArrayStub stub(mode, allocation_site_mode, length); 5643 FastCloneShallowArrayStub stub(mode, allocation_site_mode, length);
5637 CallCode(stub.GetCode(isolate()), RelocInfo::CODE_TARGET, instr); 5644 CallCode(stub.GetCode(isolate()), RelocInfo::CODE_TARGET, instr);
5638 } 5645 }
5639 } 5646 }
5640 5647
5641 5648
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6286 FixedArray::kHeaderSize - kPointerSize)); 6293 FixedArray::kHeaderSize - kPointerSize));
6287 __ bind(&done); 6294 __ bind(&done);
6288 } 6295 }
6289 6296
6290 6297
6291 #undef __ 6298 #undef __
6292 6299
6293 } } // namespace v8::internal 6300 } } // namespace v8::internal
6294 6301
6295 #endif // V8_TARGET_ARCH_IA32 6302 #endif // V8_TARGET_ARCH_IA32
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