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1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file |
2 // for details. All rights reserved. Use of this source code is governed by a | 2 // for details. All rights reserved. Use of this source code is governed by a |
3 // BSD-style license that can be found in the LICENSE file. | 3 // BSD-style license that can be found in the LICENSE file. |
4 | 4 |
5 #include "vm/locations.h" | 5 #include "vm/locations.h" |
6 | 6 |
7 #include "vm/assembler.h" | 7 #include "vm/assembler.h" |
8 #include "vm/il_printer.h" | 8 #include "vm/il_printer.h" |
9 #include "vm/log.h" | 9 #include "vm/log.h" |
10 #include "vm/stack_frame.h" | 10 #include "vm/stack_frame.h" |
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37 input_locations_ = zone->Alloc<Location>(num_inputs_); | 37 input_locations_ = zone->Alloc<Location>(num_inputs_); |
38 temp_locations_ = zone->Alloc<Location>(num_temps_); | 38 temp_locations_ = zone->Alloc<Location>(num_temps_); |
39 } | 39 } |
40 | 40 |
41 | 41 |
42 LocationSummary* LocationSummary::Make( | 42 LocationSummary* LocationSummary::Make( |
43 Zone* zone, | 43 Zone* zone, |
44 intptr_t input_count, | 44 intptr_t input_count, |
45 Location out, | 45 Location out, |
46 LocationSummary::ContainsCall contains_call) { | 46 LocationSummary::ContainsCall contains_call) { |
47 LocationSummary* summary = new(zone) LocationSummary( | 47 LocationSummary* summary = |
48 zone, input_count, 0, contains_call); | 48 new (zone) LocationSummary(zone, input_count, 0, contains_call); |
49 for (intptr_t i = 0; i < input_count; i++) { | 49 for (intptr_t i = 0; i < input_count; i++) { |
50 summary->set_in(i, Location::RequiresRegister()); | 50 summary->set_in(i, Location::RequiresRegister()); |
51 } | 51 } |
52 summary->set_out(0, out); | 52 summary->set_out(0, out); |
53 return summary; | 53 return summary; |
54 } | 54 } |
55 | 55 |
56 | 56 |
57 Location Location::Pair(Location first, Location second) { | 57 Location Location::Pair(Location first, Location second) { |
58 PairLocation* pair_location = new PairLocation(); | 58 PairLocation* pair_location = new PairLocation(); |
59 ASSERT((reinterpret_cast<intptr_t>(pair_location) & kLocationTagMask) == 0); | 59 ASSERT((reinterpret_cast<intptr_t>(pair_location) & kLocationTagMask) == 0); |
60 pair_location->SetAt(0, first); | 60 pair_location->SetAt(0, first); |
61 pair_location->SetAt(1, second); | 61 pair_location->SetAt(1, second); |
62 Location loc(reinterpret_cast<uword>(pair_location) | kPairLocationTag); | 62 Location loc(reinterpret_cast<uword>(pair_location) | kPairLocationTag); |
63 return loc; | 63 return loc; |
64 } | 64 } |
65 | 65 |
66 | 66 |
67 PairLocation* Location::AsPairLocation() const { | 67 PairLocation* Location::AsPairLocation() const { |
68 ASSERT(IsPairLocation()); | 68 ASSERT(IsPairLocation()); |
69 return reinterpret_cast<PairLocation*>(value_ & ~kLocationTagMask); | 69 return reinterpret_cast<PairLocation*>(value_ & ~kLocationTagMask); |
70 } | 70 } |
71 | 71 |
72 | 72 |
73 Location Location::RegisterOrConstant(Value* value) { | 73 Location Location::RegisterOrConstant(Value* value) { |
74 ConstantInstr* constant = value->definition()->AsConstant(); | 74 ConstantInstr* constant = value->definition()->AsConstant(); |
75 return ((constant != NULL) && Assembler::IsSafe(constant->value())) | 75 return ((constant != NULL) && Assembler::IsSafe(constant->value())) |
76 ? Location::Constant(constant) | 76 ? Location::Constant(constant) |
77 : Location::RequiresRegister(); | 77 : Location::RequiresRegister(); |
78 } | 78 } |
79 | 79 |
80 | 80 |
81 Location Location::RegisterOrSmiConstant(Value* value) { | 81 Location Location::RegisterOrSmiConstant(Value* value) { |
82 ConstantInstr* constant = value->definition()->AsConstant(); | 82 ConstantInstr* constant = value->definition()->AsConstant(); |
83 return ((constant != NULL) && Assembler::IsSafeSmi(constant->value())) | 83 return ((constant != NULL) && Assembler::IsSafeSmi(constant->value())) |
84 ? Location::Constant(constant) | 84 ? Location::Constant(constant) |
85 : Location::RequiresRegister(); | 85 : Location::RequiresRegister(); |
86 } | 86 } |
87 | 87 |
88 | 88 |
89 Location Location::WritableRegisterOrSmiConstant(Value* value) { | 89 Location Location::WritableRegisterOrSmiConstant(Value* value) { |
90 ConstantInstr* constant = value->definition()->AsConstant(); | 90 ConstantInstr* constant = value->definition()->AsConstant(); |
91 return ((constant != NULL) && Assembler::IsSafeSmi(constant->value())) | 91 return ((constant != NULL) && Assembler::IsSafeSmi(constant->value())) |
92 ? Location::Constant(constant) | 92 ? Location::Constant(constant) |
93 : Location::WritableRegister(); | 93 : Location::WritableRegister(); |
94 } | 94 } |
95 | 95 |
96 | 96 |
97 Location Location::FixedRegisterOrConstant(Value* value, Register reg) { | 97 Location Location::FixedRegisterOrConstant(Value* value, Register reg) { |
98 ConstantInstr* constant = value->definition()->AsConstant(); | 98 ConstantInstr* constant = value->definition()->AsConstant(); |
99 return ((constant != NULL) && Assembler::IsSafe(constant->value())) | 99 return ((constant != NULL) && Assembler::IsSafe(constant->value())) |
100 ? Location::Constant(constant) | 100 ? Location::Constant(constant) |
101 : Location::RegisterLocation(reg); | 101 : Location::RegisterLocation(reg); |
102 } | 102 } |
103 | 103 |
104 | 104 |
105 Location Location::FixedRegisterOrSmiConstant(Value* value, Register reg) { | 105 Location Location::FixedRegisterOrSmiConstant(Value* value, Register reg) { |
106 ConstantInstr* constant = value->definition()->AsConstant(); | 106 ConstantInstr* constant = value->definition()->AsConstant(); |
107 return ((constant != NULL) && Assembler::IsSafeSmi(constant->value())) | 107 return ((constant != NULL) && Assembler::IsSafeSmi(constant->value())) |
108 ? Location::Constant(constant) | 108 ? Location::Constant(constant) |
109 : Location::RegisterLocation(reg); | 109 : Location::RegisterLocation(reg); |
110 } | 110 } |
111 | 111 |
112 | 112 |
113 Location Location::AnyOrConstant(Value* value) { | 113 Location Location::AnyOrConstant(Value* value) { |
114 ConstantInstr* constant = value->definition()->AsConstant(); | 114 ConstantInstr* constant = value->definition()->AsConstant(); |
115 return ((constant != NULL) && Assembler::IsSafe(constant->value())) | 115 return ((constant != NULL) && Assembler::IsSafe(constant->value())) |
116 ? Location::Constant(constant) | 116 ? Location::Constant(constant) |
117 : Location::Any(); | 117 : Location::Any(); |
118 } | 118 } |
119 | 119 |
120 | 120 |
121 // DBC does not have an notion of 'address' in its instruction set. | 121 // DBC does not have an notion of 'address' in its instruction set. |
122 #if !defined(TARGET_ARCH_DBC) | 122 #if !defined(TARGET_ARCH_DBC) |
123 Address Location::ToStackSlotAddress() const { | 123 Address Location::ToStackSlotAddress() const { |
124 const intptr_t index = stack_index(); | 124 const intptr_t index = stack_index(); |
125 const Register base = base_reg(); | 125 const Register base = base_reg(); |
126 if (base == FPREG) { | 126 if (base == FPREG) { |
127 if (index < 0) { | 127 if (index < 0) { |
128 const intptr_t offset = (kParamEndSlotFromFp - index) * kWordSize; | 128 const intptr_t offset = (kParamEndSlotFromFp - index) * kWordSize; |
129 return Address(base, offset); | 129 return Address(base, offset); |
130 } else { | 130 } else { |
131 const intptr_t offset = (kFirstLocalSlotFromFp - index) * kWordSize; | 131 const intptr_t offset = (kFirstLocalSlotFromFp - index) * kWordSize; |
132 return Address(base, offset); | 132 return Address(base, offset); |
133 } | 133 } |
134 } else { | 134 } else { |
135 ASSERT(base == SPREG); | 135 ASSERT(base == SPREG); |
136 return Address(base, index * kWordSize); | 136 return Address(base, index * kWordSize); |
137 } | 137 } |
138 } | 138 } |
139 #endif | 139 #endif |
140 | 140 |
141 intptr_t Location::ToStackSlotOffset() const { | 141 intptr_t Location::ToStackSlotOffset() const { |
142 const intptr_t index = stack_index(); | 142 const intptr_t index = stack_index(); |
143 if (base_reg() == FPREG) { | 143 if (base_reg() == FPREG) { |
144 if (index < 0) { | 144 if (index < 0) { |
145 const intptr_t offset = (kParamEndSlotFromFp - index) * kWordSize; | 145 const intptr_t offset = (kParamEndSlotFromFp - index) * kWordSize; |
146 return offset; | 146 return offset; |
147 } else { | 147 } else { |
148 const intptr_t offset = (kFirstLocalSlotFromFp - index) * kWordSize; | 148 const intptr_t offset = (kFirstLocalSlotFromFp - index) * kWordSize; |
149 return offset; | 149 return offset; |
150 } | 150 } |
151 } else { | 151 } else { |
152 ASSERT(base_reg() == SPREG); | 152 ASSERT(base_reg() == SPREG); |
153 return index * kWordSize; | 153 return index * kWordSize; |
154 } | 154 } |
155 } | 155 } |
156 | 156 |
157 | 157 |
158 const Object& Location::constant() const { | 158 const Object& Location::constant() const { |
159 return constant_instruction()->value(); | 159 return constant_instruction()->value(); |
160 } | 160 } |
161 | 161 |
162 | 162 |
163 const char* Location::Name() const { | 163 const char* Location::Name() const { |
164 switch (kind()) { | 164 switch (kind()) { |
165 case kInvalid: return "?"; | 165 case kInvalid: |
166 case kRegister: return Assembler::RegisterName(reg()); | 166 return "?"; |
167 case kFpuRegister: return Assembler::FpuRegisterName(fpu_reg()); | 167 case kRegister: |
168 case kStackSlot: return "S"; | 168 return Assembler::RegisterName(reg()); |
169 case kDoubleStackSlot: return "DS"; | 169 case kFpuRegister: |
170 case kQuadStackSlot: return "QS"; | 170 return Assembler::FpuRegisterName(fpu_reg()); |
| 171 case kStackSlot: |
| 172 return "S"; |
| 173 case kDoubleStackSlot: |
| 174 return "DS"; |
| 175 case kQuadStackSlot: |
| 176 return "QS"; |
171 case kUnallocated: | 177 case kUnallocated: |
172 switch (policy()) { | 178 switch (policy()) { |
173 case kAny: | 179 case kAny: |
174 return "A"; | 180 return "A"; |
175 case kPrefersRegister: | 181 case kPrefersRegister: |
176 return "P"; | 182 return "P"; |
177 case kRequiresRegister: | 183 case kRequiresRegister: |
178 return "R"; | 184 return "R"; |
179 case kRequiresFpuRegister: | 185 case kRequiresFpuRegister: |
180 return "DR"; | 186 return "DR"; |
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355 // with the right representation because register allocator does not know | 361 // with the right representation because register allocator does not know |
356 // how they are used within the instruction template. | 362 // how they are used within the instruction template. |
357 ASSERT(in(i).IsMachineRegister()); | 363 ASSERT(in(i).IsMachineRegister()); |
358 ASSERT(live_registers()->Contains(in(i))); | 364 ASSERT(live_registers()->Contains(in(i))); |
359 } | 365 } |
360 } | 366 } |
361 } | 367 } |
362 #endif | 368 #endif |
363 | 369 |
364 } // namespace dart | 370 } // namespace dart |
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