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| 1 // Copyright 2010 the V8 project authors. All rights reserved. | 1 // Copyright 2010 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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| 9106 BranchIfNonSymbol(masm, &check_for_strings, rdx, kScratchRegister); | 9106 BranchIfNonSymbol(masm, &check_for_strings, rdx, kScratchRegister); |
| 9107 | 9107 |
| 9108 // We've already checked for object identity, so if both operands | 9108 // We've already checked for object identity, so if both operands |
| 9109 // are symbols they aren't equal. Register eax (not rax) already holds a | 9109 // are symbols they aren't equal. Register eax (not rax) already holds a |
| 9110 // non-zero value, which indicates not equal, so just return. | 9110 // non-zero value, which indicates not equal, so just return. |
| 9111 __ ret(2 * kPointerSize); | 9111 __ ret(2 * kPointerSize); |
| 9112 } | 9112 } |
| 9113 | 9113 |
| 9114 __ bind(&check_for_strings); | 9114 __ bind(&check_for_strings); |
| 9115 | 9115 |
| 9116 __ JumpIfNotBothSequentialAsciiStrings(rdx, rax, rcx, rbx, &check_unequal_obje
cts); | 9116 __ JumpIfNotBothSequentialAsciiStrings( |
| 9117 rdx, rax, rcx, rbx, &check_unequal_objects); |
| 9117 | 9118 |
| 9118 // Inline comparison of ascii strings. | 9119 // Inline comparison of ascii strings. |
| 9119 StringCompareStub::GenerateCompareFlatAsciiStrings(masm, | 9120 StringCompareStub::GenerateCompareFlatAsciiStrings(masm, |
| 9120 rdx, | 9121 rdx, |
| 9121 rax, | 9122 rax, |
| 9122 rcx, | 9123 rcx, |
| 9123 rbx, | 9124 rbx, |
| 9124 rdi, | 9125 rdi, |
| 9125 r8); | 9126 r8); |
| 9126 | 9127 |
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| 11948 } | 11949 } |
| 11949 | 11950 |
| 11950 #endif | 11951 #endif |
| 11951 | 11952 |
| 11952 | 11953 |
| 11953 #undef __ | 11954 #undef __ |
| 11954 | 11955 |
| 11955 } } // namespace v8::internal | 11956 } } // namespace v8::internal |
| 11956 | 11957 |
| 11957 #endif // V8_TARGET_ARCH_X64 | 11958 #endif // V8_TARGET_ARCH_X64 |
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