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Issue 159263: - A prototype which allows to expose CanvasPixelArray functionality... (Closed) Base URL: http://v8.googlecode.com/svn/branches/bleeding_edge/
Patch Set: '' Created 11 years, 4 months ago
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1 // Copyright 2006-2009 the V8 project authors. All rights reserved. 1 // Copyright 2006-2009 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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6290 6290
6291 // Check that the key is a smi. 6291 // Check that the key is a smi.
6292 __ test(key.reg(), Immediate(kSmiTagMask)); 6292 __ test(key.reg(), Immediate(kSmiTagMask));
6293 deferred->Branch(not_zero); 6293 deferred->Branch(not_zero);
6294 6294
6295 // Get the elements array from the receiver and check that it 6295 // Get the elements array from the receiver and check that it
6296 // is not a dictionary. 6296 // is not a dictionary.
6297 __ mov(elements.reg(), 6297 __ mov(elements.reg(),
6298 FieldOperand(receiver.reg(), JSObject::kElementsOffset)); 6298 FieldOperand(receiver.reg(), JSObject::kElementsOffset));
6299 __ cmp(FieldOperand(elements.reg(), HeapObject::kMapOffset), 6299 __ cmp(FieldOperand(elements.reg(), HeapObject::kMapOffset),
6300 Immediate(Factory::hash_table_map())); 6300 Immediate(Factory::fixed_array_map()));
6301 deferred->Branch(equal); 6301 deferred->Branch(not_equal);
6302 6302
6303 // Shift the key to get the actual index value and check that 6303 // Shift the key to get the actual index value and check that
6304 // it is within bounds. 6304 // it is within bounds.
6305 __ mov(index.reg(), key.reg()); 6305 __ mov(index.reg(), key.reg());
6306 __ sar(index.reg(), kSmiTagSize); 6306 __ sar(index.reg(), kSmiTagSize);
6307 __ cmp(index.reg(), 6307 __ cmp(index.reg(),
6308 FieldOperand(elements.reg(), FixedArray::kLengthOffset)); 6308 FieldOperand(elements.reg(), FixedArray::kLengthOffset));
6309 deferred->Branch(above_equal); 6309 deferred->Branch(above_equal);
6310 6310
6311 // Load and check that the result is not the hole. We could 6311 // Load and check that the result is not the hole. We could
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7917 7917
7918 int CompareStub::MinorKey() { 7918 int CompareStub::MinorKey() {
7919 // Encode the two parameters in a unique 16 bit value. 7919 // Encode the two parameters in a unique 16 bit value.
7920 ASSERT(static_cast<unsigned>(cc_) < (1 << 15)); 7920 ASSERT(static_cast<unsigned>(cc_) < (1 << 15));
7921 return (static_cast<unsigned>(cc_) << 1) | (strict_ ? 1 : 0); 7921 return (static_cast<unsigned>(cc_) << 1) | (strict_ ? 1 : 0);
7922 } 7922 }
7923 7923
7924 #undef __ 7924 #undef __
7925 7925
7926 } } // namespace v8::internal 7926 } } // namespace v8::internal
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