OLD | NEW |
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 |
(...skipping 20 matching lines...) Expand all Loading... |
31 #include "v8.h" | 31 #include "v8.h" |
32 | 32 |
33 namespace v8 { | 33 namespace v8 { |
34 namespace internal { | 34 namespace internal { |
35 | 35 |
36 // ------------------------------------------------------------------------- | 36 // ------------------------------------------------------------------------- |
37 // RegisterAllocator implementation. | 37 // RegisterAllocator implementation. |
38 | 38 |
39 bool RegisterAllocator::IsReserved(Register reg) { | 39 bool RegisterAllocator::IsReserved(Register reg) { |
40 return reg.is(rsp) || reg.is(rbp) || reg.is(rsi) || | 40 return reg.is(rsp) || reg.is(rbp) || reg.is(rsi) || |
41 reg.is(kScratchRegister) || reg.is(kRootRegister); | 41 reg.is(kScratchRegister) || reg.is(kRootRegister) || |
| 42 reg.is(kSmiConstantRegister); |
42 } | 43 } |
43 | 44 |
44 | 45 |
45 // The register allocator uses small integers to represent the | 46 // The register allocator uses small integers to represent the |
46 // non-reserved assembler registers. | 47 // non-reserved assembler registers. |
47 int RegisterAllocator::ToNumber(Register reg) { | 48 int RegisterAllocator::ToNumber(Register reg) { |
48 ASSERT(reg.is_valid() && !IsReserved(reg)); | 49 ASSERT(reg.is_valid() && !IsReserved(reg)); |
49 const int kNumbers[] = { | 50 const int kNumbers[] = { |
50 0, // rax | 51 0, // rax |
51 2, // rcx | 52 2, // rcx |
52 3, // rdx | 53 3, // rdx |
53 1, // rbx | 54 1, // rbx |
54 -1, // rsp Stack pointer. | 55 -1, // rsp Stack pointer. |
55 -1, // rbp Frame pointer. | 56 -1, // rbp Frame pointer. |
56 -1, // rsi Context. | 57 -1, // rsi Context. |
57 4, // rdi | 58 4, // rdi |
58 5, // r8 | 59 5, // r8 |
59 6, // r9 | 60 6, // r9 |
60 -1, // r10 Scratch register. | 61 -1, // r10 Scratch register. |
61 9, // r11 | 62 8, // r11 |
62 10, // r12 | 63 9, // r12 |
63 -1, // r13 Roots array. This is callee saved. | 64 -1, // r13 Roots array. This is callee saved. |
64 7, // r14 | 65 7, // r14 |
65 8 // r15 | 66 -1 // r15 Smi constant register. |
66 }; | 67 }; |
67 return kNumbers[reg.code()]; | 68 return kNumbers[reg.code()]; |
68 } | 69 } |
69 | 70 |
70 | 71 |
71 Register RegisterAllocator::ToRegister(int num) { | 72 Register RegisterAllocator::ToRegister(int num) { |
72 ASSERT(num >= 0 && num < kNumRegisters); | 73 ASSERT(num >= 0 && num < kNumRegisters); |
73 const Register kRegisters[] = | 74 const Register kRegisters[] = |
74 { rax, rbx, rcx, rdx, rdi, r8, r9, r14, r15, r11, r12 }; | 75 { rax, rbx, rcx, rdx, rdi, r8, r9, r14, r11, r12 }; |
75 return kRegisters[num]; | 76 return kRegisters[num]; |
76 } | 77 } |
77 | 78 |
78 | 79 |
79 void RegisterAllocator::Initialize() { | 80 void RegisterAllocator::Initialize() { |
80 Reset(); | 81 Reset(); |
81 // The non-reserved rdi register is live on JS function entry. | 82 // The non-reserved rdi register is live on JS function entry. |
82 Use(rdi); // JS function. | 83 Use(rdi); // JS function. |
83 } | 84 } |
84 } } // namespace v8::internal | 85 } } // namespace v8::internal |
85 | 86 |
86 #endif // V8_X64_REGISTER_ALLOCATOR_X64_INL_H_ | 87 #endif // V8_X64_REGISTER_ALLOCATOR_X64_INL_H_ |
OLD | NEW |