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1 // Copyright 2009 the V8 project authors. All rights reserved. | |
2 // Redistribution and use in source and binary forms, with or without | |
3 // modification, are permitted provided that the following conditions are | |
4 // met: | |
5 // | |
6 // * Redistributions of source code must retain the above copyright | |
7 // notice, this list of conditions and the following disclaimer. | |
8 // * Redistributions in binary form must reproduce the above | |
9 // copyright notice, this list of conditions and the following | |
10 // disclaimer in the documentation and/or other materials provided | |
11 // with the distribution. | |
12 // * Neither the name of Google Inc. nor the names of its | |
13 // contributors may be used to endorse or promote products derived | |
14 // from this software without specific prior written permission. | |
15 // | |
16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
27 | |
28 #ifndef V8_REGISTER_ALLOCATOR_INL_H_ | |
29 #define V8_REGISTER_ALLOCATOR_INL_H_ | |
30 | |
31 #include "codegen.h" | |
32 #include "register-allocator.h" | |
33 | |
34 #if V8_TARGET_ARCH_IA32 | |
35 #include "ia32/register-allocator-ia32-inl.h" | |
36 #elif V8_TARGET_ARCH_X64 | |
37 #include "x64/register-allocator-x64-inl.h" | |
38 #elif V8_TARGET_ARCH_ARM | |
39 #include "arm/register-allocator-arm-inl.h" | |
40 #elif V8_TARGET_ARCH_MIPS | |
41 #include "mips/register-allocator-mips-inl.h" | |
42 #else | |
43 #error Unsupported target architecture. | |
44 #endif | |
45 | |
46 | |
47 namespace v8 { | |
48 namespace internal { | |
49 | |
50 Result::Result(const Result& other) { | |
51 other.CopyTo(this); | |
52 } | |
53 | |
54 | |
55 Result& Result::operator=(const Result& other) { | |
56 if (this != &other) { | |
57 Unuse(); | |
58 other.CopyTo(this); | |
59 } | |
60 return *this; | |
61 } | |
62 | |
63 | |
64 Result::~Result() { | |
65 if (is_register()) { | |
66 CodeGeneratorScope::Current(Isolate::Current())->allocator()->Unuse(reg()); | |
67 } | |
68 } | |
69 | |
70 | |
71 void Result::Unuse() { | |
72 if (is_register()) { | |
73 CodeGeneratorScope::Current(Isolate::Current())->allocator()->Unuse(reg()); | |
74 } | |
75 invalidate(); | |
76 } | |
77 | |
78 | |
79 void Result::CopyTo(Result* destination) const { | |
80 destination->value_ = value_; | |
81 if (is_register()) { | |
82 CodeGeneratorScope::Current(Isolate::Current())->allocator()->Use(reg()); | |
83 } | |
84 } | |
85 | |
86 | |
87 bool RegisterAllocator::is_used(Register reg) { | |
88 return registers_.is_used(ToNumber(reg)); | |
89 } | |
90 | |
91 | |
92 int RegisterAllocator::count(Register reg) { | |
93 return registers_.count(ToNumber(reg)); | |
94 } | |
95 | |
96 | |
97 void RegisterAllocator::Use(Register reg) { | |
98 registers_.Use(ToNumber(reg)); | |
99 } | |
100 | |
101 | |
102 void RegisterAllocator::Unuse(Register reg) { | |
103 registers_.Unuse(ToNumber(reg)); | |
104 } | |
105 | |
106 | |
107 TypeInfo Result::type_info() const { | |
108 ASSERT(is_valid()); | |
109 return TypeInfo::FromInt(TypeInfoField::decode(value_)); | |
110 } | |
111 | |
112 | |
113 void Result::set_type_info(TypeInfo info) { | |
114 ASSERT(is_valid()); | |
115 value_ &= ~TypeInfoField::mask(); | |
116 value_ |= TypeInfoField::encode(info.ToInt()); | |
117 } | |
118 | |
119 | |
120 bool Result::is_number() const { | |
121 return type_info().IsNumber(); | |
122 } | |
123 | |
124 | |
125 bool Result::is_smi() const { | |
126 return type_info().IsSmi(); | |
127 } | |
128 | |
129 | |
130 bool Result::is_integer32() const { | |
131 return type_info().IsInteger32(); | |
132 } | |
133 | |
134 | |
135 bool Result::is_double() const { | |
136 return type_info().IsDouble(); | |
137 } | |
138 | |
139 } } // namespace v8::internal | |
140 | |
141 #endif // V8_REGISTER_ALLOCATOR_INL_H_ | |
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