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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 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "src/v8.h" | 5 #include "src/v8.h" |
6 | 6 |
7 #if V8_TARGET_ARCH_IA32 | 7 #if V8_TARGET_ARCH_IA32 |
8 | 8 |
9 #include "src/code-stubs.h" | 9 #include "src/code-stubs.h" |
10 #include "src/codegen.h" | 10 #include "src/codegen.h" |
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1200 } | 1200 } |
1201 | 1201 |
1202 | 1202 |
1203 void FullCodeGenerator::VisitForOfStatement(ForOfStatement* stmt) { | 1203 void FullCodeGenerator::VisitForOfStatement(ForOfStatement* stmt) { |
1204 Comment cmnt(masm_, "[ ForOfStatement"); | 1204 Comment cmnt(masm_, "[ ForOfStatement"); |
1205 SetStatementPosition(stmt); | 1205 SetStatementPosition(stmt); |
1206 | 1206 |
1207 Iteration loop_statement(this, stmt); | 1207 Iteration loop_statement(this, stmt); |
1208 increment_loop_depth(); | 1208 increment_loop_depth(); |
1209 | 1209 |
1210 // var iterable = subject | |
1211 VisitForAccumulatorValue(stmt->assign_iterable()); | |
1212 | |
1213 // As with for-in, skip the loop if the iterator is null or undefined. | |
1214 __ CompareRoot(eax, Heap::kUndefinedValueRootIndex); | |
1215 __ j(equal, loop_statement.break_label()); | |
1216 __ CompareRoot(eax, Heap::kNullValueRootIndex); | |
1217 __ j(equal, loop_statement.break_label()); | |
1218 | |
1219 // var iterator = iterable[Symbol.iterator](); | 1210 // var iterator = iterable[Symbol.iterator](); |
1220 VisitForEffect(stmt->assign_iterator()); | 1211 VisitForEffect(stmt->assign_iterator()); |
1221 | 1212 |
1222 // Loop entry. | 1213 // Loop entry. |
1223 __ bind(loop_statement.continue_label()); | 1214 __ bind(loop_statement.continue_label()); |
1224 | 1215 |
1225 // result = iterator.next() | 1216 // result = iterator.next() |
1226 VisitForEffect(stmt->next_result()); | 1217 VisitForEffect(stmt->next_result()); |
1227 | 1218 |
1228 // if (result.done) break; | 1219 // if (result.done) break; |
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4834 ASSERT_EQ(isolate->builtins()->OsrAfterStackCheck()->entry(), | 4825 ASSERT_EQ(isolate->builtins()->OsrAfterStackCheck()->entry(), |
4835 Assembler::target_address_at(call_target_address, | 4826 Assembler::target_address_at(call_target_address, |
4836 unoptimized_code)); | 4827 unoptimized_code)); |
4837 return OSR_AFTER_STACK_CHECK; | 4828 return OSR_AFTER_STACK_CHECK; |
4838 } | 4829 } |
4839 | 4830 |
4840 | 4831 |
4841 } } // namespace v8::internal | 4832 } } // namespace v8::internal |
4842 | 4833 |
4843 #endif // V8_TARGET_ARCH_IA32 | 4834 #endif // V8_TARGET_ARCH_IA32 |
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