dart2js: Allow 'throw' when inlining

sdk/lib/_internal/compiler/implementation/ssa/nodes.dart

Index: sdk/lib/_internal/compiler/implementation/ssa/nodes.dart
diff --git a/sdk/lib/_internal/compiler/implementation/ssa/nodes.dart b/sdk/lib/_internal/compiler/implementation/ssa/nodes.dart
index c1b9796ec9cbe58f70e8ea5889df11e536d25935..f77aa993e765799e2c6f82456526b7aae3e44227 100644
--- a/sdk/lib/_internal/compiler/implementation/ssa/nodes.dart
+++ b/sdk/lib/_internal/compiler/implementation/ssa/nodes.dart
@@ -64,6 +64,7 @@ abstract class HVisitor<R> {
   R visitSwitch(HSwitch node);
   R visitThis(HThis node);
   R visitThrow(HThrow node);
+  R visitThrowExpression(HThrowExpression node);
   R visitTry(HTry node);
   R visitTypeGuard(HTypeGuard node);
   R visitTypeConversion(HTypeConversion node);
@@ -339,6 +340,7 @@ class HBaseVisitor extends HGraphVisitor implements HVisitor {
   visitStringify(HStringify node) => visitInstruction(node);
   visitThis(HThis node) => visitParameterValue(node);
   visitThrow(HThrow node) => visitControlFlow(node);
+  visitThrowExpression(HThrowExpression node) => visitInstruction(node);
   visitTry(HTry node) => visitControlFlow(node);
   visitTypeGuard(HTypeGuard node) => visitCheck(node);
   visitIs(HIs node) => visitInstruction(node);
@@ -2018,6 +2020,13 @@ class HReturn extends HControlFlow {
   accept(HVisitor visitor) => visitor.visitReturn(this);
 }
 
+class HThrowExpression extends HInstruction {
+  HThrowExpression(value) : super(<HInstruction>[value]);
+  toString() => 'throwexpression';

[ngeoffray, 2013/04/11 09:31:08]

throwexpression -> throw expression

+  accept(HVisitor visitor) => visitor.visitThrowExpression(this);
+  bool canThrow() => true;
+}
+
 class HThrow extends HControlFlow {
   final bool isRethrow;
   HThrow(value, {this.isRethrow: false}) : super(<HInstruction>[value]);