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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_X87 | 7 #if V8_TARGET_ARCH_X87 |
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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1197 } | 1197 } |
1198 | 1198 |
1199 | 1199 |
1200 void FullCodeGenerator::VisitForOfStatement(ForOfStatement* stmt) { | 1200 void FullCodeGenerator::VisitForOfStatement(ForOfStatement* stmt) { |
1201 Comment cmnt(masm_, "[ ForOfStatement"); | 1201 Comment cmnt(masm_, "[ ForOfStatement"); |
1202 SetStatementPosition(stmt); | 1202 SetStatementPosition(stmt); |
1203 | 1203 |
1204 Iteration loop_statement(this, stmt); | 1204 Iteration loop_statement(this, stmt); |
1205 increment_loop_depth(); | 1205 increment_loop_depth(); |
1206 | 1206 |
1207 // var iterable = subject | |
1208 VisitForAccumulatorValue(stmt->assign_iterable()); | |
1209 | |
1210 // As with for-in, skip the loop if the iterator is null or undefined. | |
1211 __ CompareRoot(eax, Heap::kUndefinedValueRootIndex); | |
1212 __ j(equal, loop_statement.break_label()); | |
1213 __ CompareRoot(eax, Heap::kNullValueRootIndex); | |
1214 __ j(equal, loop_statement.break_label()); | |
1215 | |
1216 // var iterator = iterable[Symbol.iterator](); | 1207 // var iterator = iterable[Symbol.iterator](); |
1217 VisitForEffect(stmt->assign_iterator()); | 1208 VisitForEffect(stmt->assign_iterator()); |
1218 | 1209 |
1219 // Loop entry. | 1210 // Loop entry. |
1220 __ bind(loop_statement.continue_label()); | 1211 __ bind(loop_statement.continue_label()); |
1221 | 1212 |
1222 // result = iterator.next() | 1213 // result = iterator.next() |
1223 VisitForEffect(stmt->next_result()); | 1214 VisitForEffect(stmt->next_result()); |
1224 | 1215 |
1225 // if (result.done) break; | 1216 // if (result.done) break; |
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4827 ASSERT_EQ(isolate->builtins()->OsrAfterStackCheck()->entry(), | 4818 ASSERT_EQ(isolate->builtins()->OsrAfterStackCheck()->entry(), |
4828 Assembler::target_address_at(call_target_address, | 4819 Assembler::target_address_at(call_target_address, |
4829 unoptimized_code)); | 4820 unoptimized_code)); |
4830 return OSR_AFTER_STACK_CHECK; | 4821 return OSR_AFTER_STACK_CHECK; |
4831 } | 4822 } |
4832 | 4823 |
4833 | 4824 |
4834 } } // namespace v8::internal | 4825 } } // namespace v8::internal |
4835 | 4826 |
4836 #endif // V8_TARGET_ARCH_X87 | 4827 #endif // V8_TARGET_ARCH_X87 |
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