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Issue 1218843003: dart2js cps: Cleanup. (Closed) Base URL: git@github.com:dart-lang/sdk.git@master
Patch Set: Rebase Created 5 years, 5 months ago
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1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file 1 // Copyright (c) 2013, 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 library dart2js.ir_builder; 5 library dart2js.ir_builder;
6 6
7 import '../compile_time_constants.dart' show BackendConstantEnvironment; 7 import '../compile_time_constants.dart' show BackendConstantEnvironment;
8 import '../constants/constant_system.dart'; 8 import '../constants/constant_system.dart';
9 import '../constants/values.dart' show ConstantValue, PrimitiveConstantValue; 9 import '../constants/values.dart' show ConstantValue, PrimitiveConstantValue;
10 import '../dart_types.dart'; 10 import '../dart_types.dart';
(...skipping 614 matching lines...) Expand 10 before | Expand all | Expand 10 after
625 } 625 }
626 626
627 ir.Primitive _buildInvokeDynamic(ir.Primitive receiver, 627 ir.Primitive _buildInvokeDynamic(ir.Primitive receiver,
628 Selector selector, 628 Selector selector,
629 TypeMask mask, 629 TypeMask mask,
630 List<ir.Primitive> arguments, 630 List<ir.Primitive> arguments,
631 {SourceInformation sourceInformation}) { 631 {SourceInformation sourceInformation}) {
632 assert(isOpen); 632 assert(isOpen);
633 return _continueWithExpression( 633 return _continueWithExpression(
634 (k) => new ir.InvokeMethod(receiver, selector, mask, arguments, k, 634 (k) => new ir.InvokeMethod(receiver, selector, mask, arguments, k,
635 sourceInformation: sourceInformation)); 635 sourceInformation));
636 } 636 }
637 637
638 ir.Primitive _buildInvokeCall(ir.Primitive target, 638 ir.Primitive _buildInvokeCall(ir.Primitive target,
639 CallStructure callStructure, 639 CallStructure callStructure,
640 TypeMask mask, 640 TypeMask mask,
641 List<ir.Definition> arguments, 641 List<ir.Definition> arguments,
642 {SourceInformation sourceInformation}) { 642 {SourceInformation sourceInformation}) {
643 Selector selector = callStructure.callSelector; 643 Selector selector = callStructure.callSelector;
644 return _buildInvokeDynamic(target, selector, mask, arguments, 644 return _buildInvokeDynamic(target, selector, mask, arguments,
645 sourceInformation: sourceInformation); 645 sourceInformation: sourceInformation);
(...skipping 93 matching lines...) Expand 10 before | Expand all | Expand 10 after
739 // let cont join(x, ..., result) = [] in 739 // let cont join(x, ..., result) = [] in
740 // let cont then() = [[thenPart]]; join(v, ...) 740 // let cont then() = [[thenPart]]; join(v, ...)
741 // and else() = [[elsePart]]; join(v, ...) 741 // and else() = [[elsePart]]; join(v, ...)
742 // in 742 // in
743 // if condition (then, else) 743 // if condition (then, else)
744 ir.Continuation thenContinuation = new ir.Continuation([]); 744 ir.Continuation thenContinuation = new ir.Continuation([]);
745 ir.Continuation elseContinuation = new ir.Continuation([]); 745 ir.Continuation elseContinuation = new ir.Continuation([]);
746 thenContinuation.body = thenBuilder._root; 746 thenContinuation.body = thenBuilder._root;
747 elseContinuation.body = elseBuilder._root; 747 elseContinuation.body = elseBuilder._root;
748 add(new ir.LetCont(join.continuation, 748 add(new ir.LetCont(join.continuation,
749 new ir.LetCont.many(<ir.Continuation>[thenContinuation, 749 new ir.LetCont.two(thenContinuation, elseContinuation,
750 elseContinuation],
751 new ir.Branch(new ir.IsTrue(condition), 750 new ir.Branch(new ir.IsTrue(condition),
752 thenContinuation, 751 thenContinuation,
753 elseContinuation)))); 752 elseContinuation))));
754 environment = join.environment; 753 environment = join.environment;
755 return environment.discard(1); 754 return environment.discard(1);
756 } 755 }
757 756
758 /** 757 /**
759 * Add an explicit `return null` for functions that don't have a return 758 * Add an explicit `return null` for functions that don't have a return
760 * statement on each branch. This includes functions with an empty body, 759 * statement on each branch. This includes functions with an empty body,
(...skipping 455 matching lines...) Expand 10 before | Expand all | Expand 10 after
1216 outerBodyBuilder.add(innerBodyBuilder._root); 1215 outerBodyBuilder.add(innerBodyBuilder._root);
1217 } 1216 }
1218 1217
1219 // Create loop exit and body entry continuations and a branch to them. 1218 // Create loop exit and body entry continuations and a branch to them.
1220 ir.Continuation exitContinuation = new ir.Continuation([]); 1219 ir.Continuation exitContinuation = new ir.Continuation([]);
1221 ir.Continuation bodyContinuation = new ir.Continuation([]); 1220 ir.Continuation bodyContinuation = new ir.Continuation([]);
1222 bodyContinuation.body = outerBodyBuilder._root; 1221 bodyContinuation.body = outerBodyBuilder._root;
1223 // Note the order of continuations: the first one is the one that will 1222 // Note the order of continuations: the first one is the one that will
1224 // be filled by LetCont.plug. 1223 // be filled by LetCont.plug.
1225 ir.LetCont branch = 1224 ir.LetCont branch =
1226 new ir.LetCont.many(<ir.Continuation>[exitContinuation, 1225 new ir.LetCont.two(exitContinuation, bodyContinuation,
1227 bodyContinuation],
1228 new ir.Branch(new ir.IsTrue(condition), 1226 new ir.Branch(new ir.IsTrue(condition),
1229 bodyContinuation, 1227 bodyContinuation,
1230 exitContinuation)); 1228 exitContinuation));
1231 // If there are breaks in the body, then there must be a join-point 1229 // If there are breaks in the body, then there must be a join-point
1232 // continuation for the normal exit and the breaks. Otherwise, the 1230 // continuation for the normal exit and the breaks. Otherwise, the
1233 // successor is translated in the hole in the exit continuation. 1231 // successor is translated in the hole in the exit continuation.
1234 bool hasBreaks = !breakCollector.isEmpty; 1232 bool hasBreaks = !breakCollector.isEmpty;
1235 ir.LetCont letBreak; 1233 ir.LetCont letBreak;
1236 if (hasBreaks) { 1234 if (hasBreaks) {
1237 IrBuilder exitBuilder = makeDelimitedBuilder(); 1235 IrBuilder exitBuilder = makeDelimitedBuilder();
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1377 // 1375 //
1378 // let cont exit() = [ ] 1376 // let cont exit() = [ ]
1379 // and body() = <<BODY>> 1377 // and body() = <<BODY>>
1380 // in branch condition (body, exit) 1378 // in branch condition (body, exit)
1381 ir.Continuation exitContinuation = new ir.Continuation([]); 1379 ir.Continuation exitContinuation = new ir.Continuation([]);
1382 ir.Continuation bodyContinuation = new ir.Continuation([]); 1380 ir.Continuation bodyContinuation = new ir.Continuation([]);
1383 bodyContinuation.body = bodyBuilder._root; 1381 bodyContinuation.body = bodyBuilder._root;
1384 // Note the order of continuations: the first one is the one that will 1382 // Note the order of continuations: the first one is the one that will
1385 // be filled by LetCont.plug. 1383 // be filled by LetCont.plug.
1386 ir.LetCont branch = 1384 ir.LetCont branch =
1387 new ir.LetCont.many(<ir.Continuation>[exitContinuation, 1385 new ir.LetCont.two(exitContinuation, bodyContinuation,
1388 bodyContinuation],
1389 new ir.Branch(new ir.IsTrue(condition), 1386 new ir.Branch(new ir.IsTrue(condition),
1390 bodyContinuation, 1387 bodyContinuation,
1391 exitContinuation)); 1388 exitContinuation));
1392 // If there are breaks in the body, then there must be a join-point 1389 // If there are breaks in the body, then there must be a join-point
1393 // continuation for the normal exit and the breaks. Otherwise, the 1390 // continuation for the normal exit and the breaks. Otherwise, the
1394 // successor is translated in the hole in the exit continuation. 1391 // successor is translated in the hole in the exit continuation.
1395 bool hasBreaks = !breakCollector.isEmpty; 1392 bool hasBreaks = !breakCollector.isEmpty;
1396 ir.LetCont letBreak; 1393 ir.LetCont letBreak;
1397 if (hasBreaks) { 1394 if (hasBreaks) {
1398 IrBuilder exitBuilder = makeDelimitedBuilder(); 1395 IrBuilder exitBuilder = makeDelimitedBuilder();
(...skipping 54 matching lines...) Expand 10 before | Expand all | Expand 10 after
1453 state.continueCollectors.removeLast(); 1450 state.continueCollectors.removeLast();
1454 if (bodyBuilder.isOpen) bodyBuilder.jumpTo(loop); 1451 if (bodyBuilder.isOpen) bodyBuilder.jumpTo(loop);
1455 1452
1456 // Create body entry and loop exit continuations and a branch to them. 1453 // Create body entry and loop exit continuations and a branch to them.
1457 ir.Continuation exitContinuation = new ir.Continuation([]); 1454 ir.Continuation exitContinuation = new ir.Continuation([]);
1458 ir.Continuation bodyContinuation = new ir.Continuation([]); 1455 ir.Continuation bodyContinuation = new ir.Continuation([]);
1459 bodyContinuation.body = bodyBuilder._root; 1456 bodyContinuation.body = bodyBuilder._root;
1460 // Note the order of continuations: the first one is the one that will 1457 // Note the order of continuations: the first one is the one that will
1461 // be filled by LetCont.plug. 1458 // be filled by LetCont.plug.
1462 ir.LetCont branch = 1459 ir.LetCont branch =
1463 new ir.LetCont.many(<ir.Continuation>[exitContinuation, 1460 new ir.LetCont.two(exitContinuation, bodyContinuation,
1464 bodyContinuation],
1465 new ir.Branch(new ir.IsTrue(condition), 1461 new ir.Branch(new ir.IsTrue(condition),
1466 bodyContinuation, 1462 bodyContinuation,
1467 exitContinuation)); 1463 exitContinuation));
1468 // If there are breaks in the body, then there must be a join-point 1464 // If there are breaks in the body, then there must be a join-point
1469 // continuation for the normal exit and the breaks. Otherwise, the 1465 // continuation for the normal exit and the breaks. Otherwise, the
1470 // successor is translated in the hole in the exit continuation. 1466 // successor is translated in the hole in the exit continuation.
1471 bool hasBreaks = !breakCollector.isEmpty; 1467 bool hasBreaks = !breakCollector.isEmpty;
1472 ir.LetCont letBreak; 1468 ir.LetCont letBreak;
1473 if (hasBreaks) { 1469 if (hasBreaks) {
1474 IrBuilder exitBuilder = makeDelimitedBuilder(); 1470 IrBuilder exitBuilder = makeDelimitedBuilder();
(...skipping 65 matching lines...) Expand 10 before | Expand all | Expand 10 after
1540 ir.Continuation exitContinuation = new ir.Continuation([]); 1536 ir.Continuation exitContinuation = new ir.Continuation([]);
1541 IrBuilder exitBuilder = continueBuilder.makeDelimitedBuilder(); 1537 IrBuilder exitBuilder = continueBuilder.makeDelimitedBuilder();
1542 exitBuilder.jumpTo(breakCollector); 1538 exitBuilder.jumpTo(breakCollector);
1543 exitContinuation.body = exitBuilder._root; 1539 exitContinuation.body = exitBuilder._root;
1544 ir.Continuation repeatContinuation = new ir.Continuation([]); 1540 ir.Continuation repeatContinuation = new ir.Continuation([]);
1545 IrBuilder repeatBuilder = continueBuilder.makeDelimitedBuilder(); 1541 IrBuilder repeatBuilder = continueBuilder.makeDelimitedBuilder();
1546 repeatBuilder.jumpTo(loop); 1542 repeatBuilder.jumpTo(loop);
1547 repeatContinuation.body = repeatBuilder._root; 1543 repeatContinuation.body = repeatBuilder._root;
1548 1544
1549 continueBuilder.add( 1545 continueBuilder.add(
1550 new ir.LetCont.many(<ir.Continuation>[exitContinuation, 1546 new ir.LetCont.two(exitContinuation, repeatContinuation,
1551 repeatContinuation],
1552 new ir.Branch(new ir.IsTrue(condition), 1547 new ir.Branch(new ir.IsTrue(condition),
1553 repeatContinuation, 1548 repeatContinuation,
1554 exitContinuation))); 1549 exitContinuation)));
1555 continueCollector.continuation.body = continueBuilder._root; 1550 continueCollector.continuation.body = continueBuilder._root;
1556 1551
1557 // Construct the loop continuation (i.e., the body and condition). 1552 // Construct the loop continuation (i.e., the body and condition).
1558 // <Loop> = 1553 // <Loop> =
1559 // let cont continue(x, ...) = 1554 // let cont continue(x, ...) =
1560 // <Continue> 1555 // <Continue>
1561 // in [[body]]; continue(v, ...) 1556 // in [[body]]; continue(v, ...)
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1607 } 1602 }
1608 } 1603 }
1609 1604
1610 ir.Continuation thenContinuation = new ir.Continuation([]); 1605 ir.Continuation thenContinuation = new ir.Continuation([]);
1611 thenContinuation.body = thenBuilder._root; 1606 thenContinuation.body = thenBuilder._root;
1612 ir.Continuation elseContinuation = new ir.Continuation([]); 1607 ir.Continuation elseContinuation = new ir.Continuation([]);
1613 // A LetCont.many term has a hole as the body of the first listed 1608 // A LetCont.many term has a hole as the body of the first listed
1614 // continuation, to be plugged by the translation. Therefore put the 1609 // continuation, to be plugged by the translation. Therefore put the
1615 // else continuation first. 1610 // else continuation first.
1616 casesBuilder.add( 1611 casesBuilder.add(
1617 new ir.LetCont.many(<ir.Continuation>[elseContinuation, 1612 new ir.LetCont.two(elseContinuation, thenContinuation,
1618 thenContinuation],
1619 new ir.Branch(new ir.IsTrue(condition), 1613 new ir.Branch(new ir.IsTrue(condition),
1620 thenContinuation, 1614 thenContinuation,
1621 elseContinuation))); 1615 elseContinuation)));
1622 } 1616 }
1623 1617
1624 if (defaultCase != null) { 1618 if (defaultCase != null) {
1625 defaultCase.buildBody(casesBuilder); 1619 defaultCase.buildBody(casesBuilder);
1626 } 1620 }
1627 if (casesBuilder.isOpen) casesBuilder.jumpTo(join); 1621 if (casesBuilder.isOpen) casesBuilder.jumpTo(join);
1628 1622
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1813 elseContinuation.body = catchBody; 1807 elseContinuation.body = catchBody;
1814 1808
1815 // Build the type test guarding this clause. We can share the 1809 // Build the type test guarding this clause. We can share the
1816 // environment with the nested builder because this part cannot mutate 1810 // environment with the nested builder because this part cannot mutate
1817 // it. 1811 // it.
1818 IrBuilder checkBuilder = builder.makeDelimitedBuilder(environment); 1812 IrBuilder checkBuilder = builder.makeDelimitedBuilder(environment);
1819 ir.Primitive typeMatches = 1813 ir.Primitive typeMatches =
1820 checkBuilder.buildTypeOperator(exceptionParameter, 1814 checkBuilder.buildTypeOperator(exceptionParameter,
1821 clause.type, 1815 clause.type,
1822 isTypeTest: true); 1816 isTypeTest: true);
1823 checkBuilder.add(new ir.LetCont.many([thenContinuation, 1817 checkBuilder.add(new ir.LetCont.two(thenContinuation, elseContinuation,
1824 elseContinuation],
1825 new ir.Branch(new ir.IsTrue(typeMatches), 1818 new ir.Branch(new ir.IsTrue(typeMatches),
1826 thenContinuation, 1819 thenContinuation,
1827 elseContinuation))); 1820 elseContinuation)));
1828 catchBody = checkBuilder._root; 1821 catchBody = checkBuilder._root;
1829 } 1822 }
1830 builder.add(catchBody); 1823 builder.add(catchBody);
1831 1824
1832 return <ir.Parameter>[exceptionParameter, traceParameter]; 1825 return <ir.Parameter>[exceptionParameter, traceParameter];
1833 } 1826 }
1834 1827
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2085 2078
2086 ir.Constant trueConstant = makeBoolConstant(true); 2079 ir.Constant trueConstant = makeBoolConstant(true);
2087 ir.Constant falseConstant = makeBoolConstant(false); 2080 ir.Constant falseConstant = makeBoolConstant(false);
2088 2081
2089 thenContinuation.body = new ir.LetPrim(falseConstant) 2082 thenContinuation.body = new ir.LetPrim(falseConstant)
2090 ..plug(new ir.InvokeContinuation(joinContinuation, [falseConstant])); 2083 ..plug(new ir.InvokeContinuation(joinContinuation, [falseConstant]));
2091 elseContinuation.body = new ir.LetPrim(trueConstant) 2084 elseContinuation.body = new ir.LetPrim(trueConstant)
2092 ..plug(new ir.InvokeContinuation(joinContinuation, [trueConstant])); 2085 ..plug(new ir.InvokeContinuation(joinContinuation, [trueConstant]));
2093 2086
2094 add(new ir.LetCont(joinContinuation, 2087 add(new ir.LetCont(joinContinuation,
2095 new ir.LetCont.many(<ir.Continuation>[thenContinuation, 2088 new ir.LetCont.two(thenContinuation, elseContinuation,
2096 elseContinuation],
2097 new ir.Branch(new ir.IsTrue(condition), 2089 new ir.Branch(new ir.IsTrue(condition),
2098 thenContinuation, 2090 thenContinuation,
2099 elseContinuation)))); 2091 elseContinuation))));
2100 return resultParameter; 2092 return resultParameter;
2101 } 2093 }
2102 2094
2103 /// Create a lazy and/or expression. [leftValue] is the value of the left 2095 /// Create a lazy and/or expression. [leftValue] is the value of the left
2104 /// operand and [buildRightValue] is called to process the value of the right 2096 /// operand and [buildRightValue] is called to process the value of the right
2105 /// operand in the context of its own [IrBuilder]. 2097 /// operand in the context of its own [IrBuilder].
2106 ir.Primitive buildLogicalOperator( 2098 ir.Primitive buildLogicalOperator(
(...skipping 39 matching lines...) Expand 10 before | Expand all | Expand 10 after
2146 rightTrueBuilder.jumpTo(join, rightTrue); 2138 rightTrueBuilder.jumpTo(join, rightTrue);
2147 rightFalseBuilder.jumpTo(join, rightFalse); 2139 rightFalseBuilder.jumpTo(join, rightFalse);
2148 ir.Continuation leftTrueContinuation = new ir.Continuation([]); 2140 ir.Continuation leftTrueContinuation = new ir.Continuation([]);
2149 ir.Continuation leftFalseContinuation = new ir.Continuation([]); 2141 ir.Continuation leftFalseContinuation = new ir.Continuation([]);
2150 ir.Continuation rightTrueContinuation = new ir.Continuation([]); 2142 ir.Continuation rightTrueContinuation = new ir.Continuation([]);
2151 ir.Continuation rightFalseContinuation = new ir.Continuation([]); 2143 ir.Continuation rightFalseContinuation = new ir.Continuation([]);
2152 rightTrueContinuation.body = rightTrueBuilder._root; 2144 rightTrueContinuation.body = rightTrueBuilder._root;
2153 rightFalseContinuation.body = rightFalseBuilder._root; 2145 rightFalseContinuation.body = rightFalseBuilder._root;
2154 // The right subexpression has two continuations. 2146 // The right subexpression has two continuations.
2155 rightBuilder.add( 2147 rightBuilder.add(
2156 new ir.LetCont.many(<ir.Continuation>[rightTrueContinuation, 2148 new ir.LetCont.two(rightTrueContinuation, rightFalseContinuation,
2157 rightFalseContinuation],
2158 new ir.Branch(new ir.IsTrue(rightValue), 2149 new ir.Branch(new ir.IsTrue(rightValue),
2159 rightTrueContinuation, 2150 rightTrueContinuation,
2160 rightFalseContinuation))); 2151 rightFalseContinuation)));
2161 // Depending on the operator, the left subexpression's continuations are 2152 // Depending on the operator, the left subexpression's continuations are
2162 // either the right subexpression or an invocation of the join-point 2153 // either the right subexpression or an invocation of the join-point
2163 // continuation. 2154 // continuation.
2164 if (isLazyOr) { 2155 if (isLazyOr) {
2165 leftTrueContinuation.body = emptyBuilder._root; 2156 leftTrueContinuation.body = emptyBuilder._root;
2166 leftFalseContinuation.body = rightBuilder._root; 2157 leftFalseContinuation.body = rightBuilder._root;
2167 } else { 2158 } else {
2168 leftTrueContinuation.body = rightBuilder._root; 2159 leftTrueContinuation.body = rightBuilder._root;
2169 leftFalseContinuation.body = emptyBuilder._root; 2160 leftFalseContinuation.body = emptyBuilder._root;
2170 } 2161 }
2171 2162
2172 add(new ir.LetCont(join.continuation, 2163 add(new ir.LetCont(join.continuation,
2173 new ir.LetCont.many(<ir.Continuation>[leftTrueContinuation, 2164 new ir.LetCont.two(leftTrueContinuation, leftFalseContinuation,
2174 leftFalseContinuation],
2175 new ir.Branch(new ir.IsTrue(leftValue), 2165 new ir.Branch(new ir.IsTrue(leftValue),
2176 leftTrueContinuation, 2166 leftTrueContinuation,
2177 leftFalseContinuation)))); 2167 leftFalseContinuation))));
2178 environment = join.environment; 2168 environment = join.environment;
2179 return environment.discard(1); 2169 return environment.discard(1);
2180 } 2170 }
2181 2171
2182 ir.Primitive buildIdentical(ir.Primitive x, ir.Primitive y) { 2172 ir.Primitive buildIdentical(ir.Primitive x, ir.Primitive y) {
2183 return addPrimitive(new ir.ApplyBuiltinOperator( 2173 return addPrimitive(new ir.ApplyBuiltinOperator(
2184 ir.BuiltinOperator.Identical, <ir.Primitive>[x, y])); 2174 ir.BuiltinOperator.Identical, <ir.Primitive>[x, y]));
(...skipping 511 matching lines...) Expand 10 before | Expand all | Expand 10 after
2696 } 2686 }
2697 2687
2698 class SwitchCaseInfo { 2688 class SwitchCaseInfo {
2699 final List<ir.Primitive> constants = <ir.Primitive>[]; 2689 final List<ir.Primitive> constants = <ir.Primitive>[];
2700 final SubbuildFunction buildBody; 2690 final SubbuildFunction buildBody;
2701 2691
2702 SwitchCaseInfo(this.buildBody); 2692 SwitchCaseInfo(this.buildBody);
2703 2693
2704 void addConstant(ir.Primitive constant) => constants.add(constant); 2694 void addConstant(ir.Primitive constant) => constants.add(constant);
2705 } 2695 }
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