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| 1 // Copyright 2009 the V8 project authors. All rights reserved. | 1 // Copyright 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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| 37 // ------------------------------------------------------------------------- | 37 // ------------------------------------------------------------------------- |
| 38 // Result implementation. | 38 // Result implementation. |
| 39 | 39 |
| 40 void Result::ToRegister() { | 40 void Result::ToRegister() { |
| 41 ASSERT(is_valid()); | 41 ASSERT(is_valid()); |
| 42 if (is_constant()) { | 42 if (is_constant()) { |
| 43 Result fresh = CodeGeneratorScope::Current()->allocator()->Allocate(); | 43 Result fresh = CodeGeneratorScope::Current()->allocator()->Allocate(); |
| 44 ASSERT(fresh.is_valid()); | 44 ASSERT(fresh.is_valid()); |
| 45 CodeGeneratorScope::Current()->masm()->Move(fresh.reg(), handle()); | 45 CodeGeneratorScope::Current()->masm()->Move(fresh.reg(), handle()); |
| 46 // This result becomes a copy of the fresh one. | 46 // This result becomes a copy of the fresh one. |
| 47 fresh.set_number_info(number_info()); | 47 fresh.set_type_info(type_info()); |
| 48 *this = fresh; | 48 *this = fresh; |
| 49 } | 49 } |
| 50 ASSERT(is_register()); | 50 ASSERT(is_register()); |
| 51 } | 51 } |
| 52 | 52 |
| 53 | 53 |
| 54 void Result::ToRegister(Register target) { | 54 void Result::ToRegister(Register target) { |
| 55 ASSERT(is_valid()); | 55 ASSERT(is_valid()); |
| 56 if (!is_register() || !reg().is(target)) { | 56 if (!is_register() || !reg().is(target)) { |
| 57 Result fresh = CodeGeneratorScope::Current()->allocator()->Allocate(target); | 57 Result fresh = CodeGeneratorScope::Current()->allocator()->Allocate(target); |
| 58 ASSERT(fresh.is_valid()); | 58 ASSERT(fresh.is_valid()); |
| 59 if (is_register()) { | 59 if (is_register()) { |
| 60 CodeGeneratorScope::Current()->masm()->movq(fresh.reg(), reg()); | 60 CodeGeneratorScope::Current()->masm()->movq(fresh.reg(), reg()); |
| 61 } else { | 61 } else { |
| 62 ASSERT(is_constant()); | 62 ASSERT(is_constant()); |
| 63 CodeGeneratorScope::Current()->masm()->Move(fresh.reg(), handle()); | 63 CodeGeneratorScope::Current()->masm()->Move(fresh.reg(), handle()); |
| 64 } | 64 } |
| 65 fresh.set_number_info(number_info()); | 65 fresh.set_type_info(type_info()); |
| 66 *this = fresh; | 66 *this = fresh; |
| 67 } else if (is_register() && reg().is(target)) { | 67 } else if (is_register() && reg().is(target)) { |
| 68 ASSERT(CodeGeneratorScope::Current()->has_valid_frame()); | 68 ASSERT(CodeGeneratorScope::Current()->has_valid_frame()); |
| 69 CodeGeneratorScope::Current()->frame()->Spill(target); | 69 CodeGeneratorScope::Current()->frame()->Spill(target); |
| 70 ASSERT(CodeGeneratorScope::Current()->allocator()->count(target) == 1); | 70 ASSERT(CodeGeneratorScope::Current()->allocator()->count(target) == 1); |
| 71 } | 71 } |
| 72 ASSERT(is_register()); | 72 ASSERT(is_register()); |
| 73 ASSERT(reg().is(target)); | 73 ASSERT(reg().is(target)); |
| 74 } | 74 } |
| 75 | 75 |
| 76 | 76 |
| 77 // ------------------------------------------------------------------------- | 77 // ------------------------------------------------------------------------- |
| 78 // RegisterAllocator implementation. | 78 // RegisterAllocator implementation. |
| 79 | 79 |
| 80 Result RegisterAllocator::AllocateByteRegisterWithoutSpilling() { | 80 Result RegisterAllocator::AllocateByteRegisterWithoutSpilling() { |
| 81 // This function is not used in 64-bit code. | 81 // This function is not used in 64-bit code. |
| 82 UNREACHABLE(); | 82 UNREACHABLE(); |
| 83 return Result(); | 83 return Result(); |
| 84 } | 84 } |
| 85 | 85 |
| 86 | 86 |
| 87 } } // namespace v8::internal | 87 } } // namespace v8::internal |
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