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1 // Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2014, 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 part of tree_ir.optimization; | 5 part of tree_ir.optimization; |
6 | 6 |
7 /** | 7 /** |
8 * Performs the following transformations on the tree: | 8 * Performs the following transformations on the tree: |
9 * - Assignment inlining | 9 * - Assignment inlining |
10 * - Assignment expression propagation | 10 * - Assignment expression propagation |
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565 Expression visitLiteralMap(LiteralMap node) { | 565 Expression visitLiteralMap(LiteralMap node) { |
566 // Process arguments right-to-left, the opposite of evaluation order. | 566 // Process arguments right-to-left, the opposite of evaluation order. |
567 for (LiteralMapEntry entry in node.entries.reversed) { | 567 for (LiteralMapEntry entry in node.entries.reversed) { |
568 entry.value = visitExpression(entry.value); | 568 entry.value = visitExpression(entry.value); |
569 entry.key = visitExpression(entry.key); | 569 entry.key = visitExpression(entry.key); |
570 } | 570 } |
571 return node; | 571 return node; |
572 } | 572 } |
573 | 573 |
574 Expression visitTypeOperator(TypeOperator node) { | 574 Expression visitTypeOperator(TypeOperator node) { |
575 _rewriteList(node.typeArguments); | 575 node.receiver = visitExpression(node.receiver); |
576 node.value = visitExpression(node.value); | |
577 return node; | 576 return node; |
578 } | 577 } |
579 | 578 |
580 Expression visitSetField(SetField node) { | 579 Expression visitSetField(SetField node) { |
581 node.value = visitExpression(node.value); | 580 node.value = visitExpression(node.value); |
582 node.object = visitExpression(node.object); | 581 node.object = visitExpression(node.object); |
583 return node; | 582 return node; |
584 } | 583 } |
585 | 584 |
586 Expression visitGetField(GetField node) { | 585 Expression visitGetField(GetField node) { |
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923 } | 922 } |
924 | 923 |
925 /// Result of combining two expressions that do not affect reference counting. | 924 /// Result of combining two expressions that do not affect reference counting. |
926 class GenericCombinedExpressions implements CombinedExpressions { | 925 class GenericCombinedExpressions implements CombinedExpressions { |
927 Expression combined; | 926 Expression combined; |
928 | 927 |
929 GenericCombinedExpressions(this.combined); | 928 GenericCombinedExpressions(this.combined); |
930 | 929 |
931 void uncombine() {} | 930 void uncombine() {} |
932 } | 931 } |
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