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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 |
11 // with the distribution. | 11 // with the distribution. |
12 // * Neither the name of Google Inc. nor the names of its | 12 // * Neither the name of Google Inc. nor the names of its |
13 // contributors may be used to endorse or promote products derived | 13 // contributors may be used to endorse or promote products derived |
14 // from this software without specific prior written permission. | 14 // from this software without specific prior written permission. |
15 // | 15 // |
16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | 16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | 17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | 18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | 19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | 20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | 21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | 22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | 23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | 24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | 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. | 26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | 27 |
28 #include "v8.h" | 28 #include "v8.h" |
29 | 29 |
30 #include "codegen.h" | 30 #include "codegen-inl.h" |
31 #include "virtual-frame.h" | 31 #include "register-allocator-inl.h" |
32 | 32 |
33 namespace v8 { namespace internal { | 33 namespace v8 { namespace internal { |
34 | 34 |
35 // ------------------------------------------------------------------------- | 35 // ------------------------------------------------------------------------- |
36 // Result implementation. | 36 // Result implementation. |
37 | 37 |
38 Result::Result(Register reg, CodeGenerator* cgen) | 38 Result::Result(Register reg, CodeGenerator* cgen) |
39 : type_(REGISTER), | 39 : type_(REGISTER), |
40 cgen_(cgen) { | 40 cgen_(cgen) { |
41 data_.reg_ = reg; | 41 data_.reg_ = reg; |
(...skipping 10 matching lines...) Expand all Loading... |
52 destination->data_.reg_ = reg(); | 52 destination->data_.reg_ = reg(); |
53 cgen_->allocator()->Use(reg()); | 53 cgen_->allocator()->Use(reg()); |
54 } else if (is_constant()) { | 54 } else if (is_constant()) { |
55 destination->data_.handle_ = data_.handle_; | 55 destination->data_.handle_ = data_.handle_; |
56 } else { | 56 } else { |
57 ASSERT(!is_valid()); | 57 ASSERT(!is_valid()); |
58 } | 58 } |
59 } | 59 } |
60 | 60 |
61 | 61 |
62 void Result::Unuse() { | |
63 if (is_register()) { | |
64 cgen_->allocator()->Unuse(reg()); | |
65 } | |
66 type_ = INVALID; | |
67 } | |
68 | |
69 | |
70 // ------------------------------------------------------------------------- | 62 // ------------------------------------------------------------------------- |
71 // RegisterFile implementation. | 63 // RegisterFile implementation. |
72 | 64 |
73 void RegisterFile::CopyTo(RegisterFile* other) { | 65 void RegisterFile::CopyTo(RegisterFile* other) { |
74 for (int i = 0; i < kNumRegisters; i++) { | 66 for (int i = 0; i < kNumRegisters; i++) { |
75 other->ref_counts_[i] = ref_counts_[i]; | 67 other->ref_counts_[i] = ref_counts_[i]; |
76 } | 68 } |
77 } | 69 } |
78 | 70 |
79 | 71 |
(...skipping 39 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
119 cgen_->frame()->Spill(target); | 111 cgen_->frame()->Spill(target); |
120 ASSERT(!is_used(target)); | 112 ASSERT(!is_used(target)); |
121 return Result(target, cgen_); | 113 return Result(target, cgen_); |
122 } | 114 } |
123 // Otherwise (if it's referenced outside the frame) we cannot allocate it. | 115 // Otherwise (if it's referenced outside the frame) we cannot allocate it. |
124 return Result(cgen_); | 116 return Result(cgen_); |
125 } | 117 } |
126 | 118 |
127 | 119 |
128 } } // namespace v8::internal | 120 } } // namespace v8::internal |
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