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1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 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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1234 } else if (var->mode() == DYNAMIC_LOCAL) { | 1234 } else if (var->mode() == DYNAMIC_LOCAL) { |
1235 Variable* local = var->local_if_not_shadowed(); | 1235 Variable* local = var->local_if_not_shadowed(); |
1236 __ lw(v0, ContextSlotOperandCheckExtensions(local, slow)); | 1236 __ lw(v0, ContextSlotOperandCheckExtensions(local, slow)); |
1237 if (local->mode() == CONST || | 1237 if (local->mode() == CONST || |
1238 local->mode() == CONST_HARMONY || | 1238 local->mode() == CONST_HARMONY || |
1239 local->mode() == LET) { | 1239 local->mode() == LET) { |
1240 __ LoadRoot(at, Heap::kTheHoleValueRootIndex); | 1240 __ LoadRoot(at, Heap::kTheHoleValueRootIndex); |
1241 __ subu(at, v0, at); // Sub as compare: at == 0 on eq. | 1241 __ subu(at, v0, at); // Sub as compare: at == 0 on eq. |
1242 if (local->mode() == CONST) { | 1242 if (local->mode() == CONST) { |
1243 __ LoadRoot(a0, Heap::kUndefinedValueRootIndex); | 1243 __ LoadRoot(a0, Heap::kUndefinedValueRootIndex); |
1244 __ movz(v0, a0, at); // Conditional move: return Undefined if TheHole. | 1244 __ Movz(v0, a0, at); // Conditional move: return Undefined if TheHole. |
1245 } else { // LET || CONST_HARMONY | 1245 } else { // LET || CONST_HARMONY |
1246 __ Branch(done, ne, at, Operand(zero_reg)); | 1246 __ Branch(done, ne, at, Operand(zero_reg)); |
1247 __ li(a0, Operand(var->name())); | 1247 __ li(a0, Operand(var->name())); |
1248 __ push(a0); | 1248 __ push(a0); |
1249 __ CallRuntime(Runtime::kThrowReferenceError, 1); | 1249 __ CallRuntime(Runtime::kThrowReferenceError, 1); |
1250 } | 1250 } |
1251 } | 1251 } |
1252 __ Branch(done); | 1252 __ Branch(done); |
1253 } | 1253 } |
1254 } | 1254 } |
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1326 Label done; | 1326 Label done; |
1327 __ Branch(&done, ne, at, Operand(zero_reg)); | 1327 __ Branch(&done, ne, at, Operand(zero_reg)); |
1328 __ li(a0, Operand(var->name())); | 1328 __ li(a0, Operand(var->name())); |
1329 __ push(a0); | 1329 __ push(a0); |
1330 __ CallRuntime(Runtime::kThrowReferenceError, 1); | 1330 __ CallRuntime(Runtime::kThrowReferenceError, 1); |
1331 __ bind(&done); | 1331 __ bind(&done); |
1332 } else { | 1332 } else { |
1333 // Uninitalized const bindings outside of harmony mode are unholed. | 1333 // Uninitalized const bindings outside of harmony mode are unholed. |
1334 ASSERT(var->mode() == CONST); | 1334 ASSERT(var->mode() == CONST); |
1335 __ LoadRoot(a0, Heap::kUndefinedValueRootIndex); | 1335 __ LoadRoot(a0, Heap::kUndefinedValueRootIndex); |
1336 __ movz(v0, a0, at); // Conditional move: Undefined if TheHole. | 1336 __ Movz(v0, a0, at); // Conditional move: Undefined if TheHole. |
1337 } | 1337 } |
1338 context()->Plug(v0); | 1338 context()->Plug(v0); |
1339 break; | 1339 break; |
1340 } | 1340 } |
1341 } | 1341 } |
1342 context()->Plug(var); | 1342 context()->Plug(var); |
1343 break; | 1343 break; |
1344 } | 1344 } |
1345 | 1345 |
1346 case Variable::LOOKUP: { | 1346 case Variable::LOOKUP: { |
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4434 *context_length = 0; | 4434 *context_length = 0; |
4435 return previous_; | 4435 return previous_; |
4436 } | 4436 } |
4437 | 4437 |
4438 | 4438 |
4439 #undef __ | 4439 #undef __ |
4440 | 4440 |
4441 } } // namespace v8::internal | 4441 } } // namespace v8::internal |
4442 | 4442 |
4443 #endif // V8_TARGET_ARCH_MIPS | 4443 #endif // V8_TARGET_ARCH_MIPS |
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