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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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1204 } | 1204 } |
1205 | 1205 |
1206 | 1206 |
1207 void FullCodeGenerator::VisitForOfStatement(ForOfStatement* stmt) { | 1207 void FullCodeGenerator::VisitForOfStatement(ForOfStatement* stmt) { |
1208 Comment cmnt(masm_, "[ ForOfStatement"); | 1208 Comment cmnt(masm_, "[ ForOfStatement"); |
1209 SetStatementPosition(stmt); | 1209 SetStatementPosition(stmt); |
1210 | 1210 |
1211 Iteration loop_statement(this, stmt); | 1211 Iteration loop_statement(this, stmt); |
1212 increment_loop_depth(); | 1212 increment_loop_depth(); |
1213 | 1213 |
1214 // var iterator = iterable[@@iterator]() | 1214 // var iterable = subject |
1215 VisitForAccumulatorValue(stmt->assign_iterator()); | 1215 VisitForAccumulatorValue(stmt->assign_iterable()); |
1216 | 1216 |
1217 // As with for-in, skip the loop if the iterator is null or undefined. | 1217 // As with for-in, skip the loop if the iterator is null or undefined. |
1218 __ CompareRoot(eax, Heap::kUndefinedValueRootIndex); | 1218 __ CompareRoot(eax, Heap::kUndefinedValueRootIndex); |
1219 __ j(equal, loop_statement.break_label()); | 1219 __ j(equal, loop_statement.break_label()); |
1220 __ CompareRoot(eax, Heap::kNullValueRootIndex); | 1220 __ CompareRoot(eax, Heap::kNullValueRootIndex); |
1221 __ j(equal, loop_statement.break_label()); | 1221 __ j(equal, loop_statement.break_label()); |
1222 | 1222 |
1223 // Convert the iterator to a JS object. | 1223 // var iterator = iterable[Symbol.iterator](); |
1224 Label convert, done_convert; | 1224 VisitForEffect(stmt->assign_iterator()); |
1225 __ JumpIfSmi(eax, &convert); | |
1226 __ CmpObjectType(eax, FIRST_SPEC_OBJECT_TYPE, ecx); | |
1227 __ j(above_equal, &done_convert); | |
1228 __ bind(&convert); | |
1229 __ push(eax); | |
1230 __ InvokeBuiltin(Builtins::TO_OBJECT, CALL_FUNCTION); | |
1231 __ bind(&done_convert); | |
1232 | 1225 |
1233 // Loop entry. | 1226 // Loop entry. |
1234 __ bind(loop_statement.continue_label()); | 1227 __ bind(loop_statement.continue_label()); |
1235 | 1228 |
1236 // result = iterator.next() | 1229 // result = iterator.next() |
1237 VisitForEffect(stmt->next_result()); | 1230 VisitForEffect(stmt->next_result()); |
1238 | 1231 |
1239 // if (result.done) break; | 1232 // if (result.done) break; |
1240 Label result_not_done; | 1233 Label result_not_done; |
1241 VisitForControl(stmt->result_done(), | 1234 VisitForControl(stmt->result_done(), |
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4796 ASSERT_EQ(isolate->builtins()->OsrAfterStackCheck()->entry(), | 4789 ASSERT_EQ(isolate->builtins()->OsrAfterStackCheck()->entry(), |
4797 Assembler::target_address_at(call_target_address, | 4790 Assembler::target_address_at(call_target_address, |
4798 unoptimized_code)); | 4791 unoptimized_code)); |
4799 return OSR_AFTER_STACK_CHECK; | 4792 return OSR_AFTER_STACK_CHECK; |
4800 } | 4793 } |
4801 | 4794 |
4802 | 4795 |
4803 } } // namespace v8::internal | 4796 } } // namespace v8::internal |
4804 | 4797 |
4805 #endif // V8_TARGET_ARCH_X87 | 4798 #endif // V8_TARGET_ARCH_X87 |
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