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1 // Copyright 2011 the V8 project authors. All rights reserved. | 1 // Copyright 2011 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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2864 STATIC_ASSERT(kAsciiStringTag != 0); | 2864 STATIC_ASSERT(kAsciiStringTag != 0); |
2865 __ test(result, Immediate(kStringEncodingMask)); | 2865 __ test(result, Immediate(kStringEncodingMask)); |
2866 __ j(not_zero, &ascii_string); | 2866 __ j(not_zero, &ascii_string); |
2867 | 2867 |
2868 // Two-byte string. | 2868 // Two-byte string. |
2869 // Load the two-byte character code into the result register. | 2869 // Load the two-byte character code into the result register. |
2870 STATIC_ASSERT(kSmiTag == 0 && kSmiTagSize == 1); | 2870 STATIC_ASSERT(kSmiTag == 0 && kSmiTagSize == 1); |
2871 if (instr->index()->IsConstantOperand()) { | 2871 if (instr->index()->IsConstantOperand()) { |
2872 __ movzx_w(result, | 2872 __ movzx_w(result, |
2873 FieldOperand(string, | 2873 FieldOperand(string, |
2874 SeqTwoByteString::kHeaderSize + | 2874 SeqTwoByteString::kHeaderSize + |
2875 (kUC16Size * const_index))); | 2875 (kUC16Size * const_index))); |
2876 } else { | 2876 } else { |
2877 __ movzx_w(result, FieldOperand(string, | 2877 __ movzx_w(result, FieldOperand(string, |
2878 index, | 2878 index, |
2879 times_2, | 2879 times_2, |
2880 SeqTwoByteString::kHeaderSize)); | 2880 SeqTwoByteString::kHeaderSize)); |
2881 } | 2881 } |
2882 __ jmp(&done); | 2882 __ jmp(&done); |
2883 | 2883 |
2884 // ASCII string. | 2884 // ASCII string. |
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3805 ASSERT(osr_pc_offset_ == -1); | 3805 ASSERT(osr_pc_offset_ == -1); |
3806 osr_pc_offset_ = masm()->pc_offset(); | 3806 osr_pc_offset_ = masm()->pc_offset(); |
3807 } | 3807 } |
3808 | 3808 |
3809 | 3809 |
3810 #undef __ | 3810 #undef __ |
3811 | 3811 |
3812 } } // namespace v8::internal | 3812 } } // namespace v8::internal |
3813 | 3813 |
3814 #endif // V8_TARGET_ARCH_IA32 | 3814 #endif // V8_TARGET_ARCH_IA32 |
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