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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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| 826 // Prepare a0 to initialize registers with its value in the next run. | 826 // Prepare a0 to initialize registers with its value in the next run. |
| 827 __ lw(a0, MemOperand(frame_pointer(), kInputStartMinusOne)); | 827 __ lw(a0, MemOperand(frame_pointer(), kInputStartMinusOne)); |
| 828 | 828 |
| 829 if (global_with_zero_length_check()) { | 829 if (global_with_zero_length_check()) { |
| 830 // Special case for zero-length matches. | 830 // Special case for zero-length matches. |
| 831 // t7: capture start index | 831 // t7: capture start index |
| 832 // Not a zero-length match, restart. | 832 // Not a zero-length match, restart. |
| 833 __ Branch( | 833 __ Branch( |
| 834 &load_char_start_regexp, ne, current_input_offset(), Operand(t7)); | 834 &load_char_start_regexp, ne, current_input_offset(), Operand(t7)); |
| 835 // Offset from the end is zero if we already reached the end. | 835 // Offset from the end is zero if we already reached the end. |
| 836 __ Branch(&exit_label_, eq, current_input_offset(), Operand(zero_reg))
; | 836 __ Branch(&exit_label_, eq, current_input_offset(), |
| 837 Operand(zero_reg)); |
| 837 // Advance current position after a zero-length match. | 838 // Advance current position after a zero-length match. |
| 838 __ Addu(current_input_offset(), | 839 __ Addu(current_input_offset(), |
| 839 current_input_offset(), | 840 current_input_offset(), |
| 840 Operand((mode_ == UC16) ? 2 : 1)); | 841 Operand((mode_ == UC16) ? 2 : 1)); |
| 841 } | 842 } |
| 842 | 843 |
| 843 __ Branch(&load_char_start_regexp); | 844 __ Branch(&load_char_start_regexp); |
| 844 } else { | 845 } else { |
| 845 __ li(v0, Operand(SUCCESS)); | 846 __ li(v0, Operand(SUCCESS)); |
| 846 } | 847 } |
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| 1372 } | 1373 } |
| 1373 | 1374 |
| 1374 | 1375 |
| 1375 #undef __ | 1376 #undef __ |
| 1376 | 1377 |
| 1377 #endif // V8_INTERPRETED_REGEXP | 1378 #endif // V8_INTERPRETED_REGEXP |
| 1378 | 1379 |
| 1379 }} // namespace v8::internal | 1380 }} // namespace v8::internal |
| 1380 | 1381 |
| 1381 #endif // V8_TARGET_ARCH_MIPS | 1382 #endif // V8_TARGET_ARCH_MIPS |
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