dart2js cps: Track existence of try statements in resolution instead of traversing AST/IR nodes to …

pkg/compiler/lib/src/ssa/builder.dart

Index: pkg/compiler/lib/src/ssa/builder.dart
diff --git a/pkg/compiler/lib/src/ssa/builder.dart b/pkg/compiler/lib/src/ssa/builder.dart
index f9d87f94304cfb42add3c17338ba54c19881a5c1..2154da41cfae809840add72d7e6fbba4bc901f57 100644
--- a/pkg/compiler/lib/src/ssa/builder.dart
+++ b/pkg/compiler/lib/src/ssa/builder.dart
@@ -8449,6 +8449,8 @@ class InlineWeeder extends ast.Visitor {
                            int maxInliningNodes,
                            bool useMaxInliningNodes,
                            {bool allowLoops: false}) {
+    if (function.resolvedAst.elements.containsTryStatement) return false;
+
     InlineWeeder weeder =
         new InlineWeeder(maxInliningNodes, useMaxInliningNodes, allowLoops);
     ast.FunctionExpression functionExpression = function.node;
@@ -8531,11 +8533,6 @@ class InlineWeeder extends ast.Visitor {
     seenReturn = true;
   }
 
-  void visitTryStatement(ast.Node node) {
-    if (!registerNode()) return;
-    tooDifficult = true;
-  }
-
   void visitThrow(ast.Throw node) {
     if (!registerNode()) return;
     // For now, we don't want to handle throw after a return even if