Implement switch statement, without the "complex switch statement" (aka switch statement with conti…

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 7cf54fcae9474145a3e946a4463e4404f7c00a54..b08b3186bc789f1c946a002814dc8a2dda4dd73b 100644
--- a/pkg/compiler/lib/src/ssa/builder.dart
+++ b/pkg/compiler/lib/src/ssa/builder.dart
@@ -668,8 +668,6 @@ class SsaBuilder extends ast.Visitor
   Local returnLocal;
   ResolutionDartType returnType;
 
-  bool inTryStatement = false;
-
   ConstantValue getConstantForNode(ast.Node node) {
     ConstantValue constantValue =
         backend.constants.getConstantValueForNode(node, elements);
@@ -1910,6 +1908,17 @@ class SsaBuilder extends ast.Visitor
     }
   }
 
+  void handleIf(
+      {ast.Node node,
+      void visitCondition(),
+      void visitThen(),
+      void visitElse(),
+      SourceInformation sourceInformation}) {
+    SsaBranchBuilder branchBuilder = new SsaBranchBuilder(this, compiler, node);
+    branchBuilder.handleIf(visitCondition, visitThen, visitElse,
+        sourceInformation: sourceInformation);
+  }
+
   visitIf(ast.If node) {
     assert(isReachable);
     handleIf(
@@ -5053,14 +5062,6 @@ class SsaBuilder extends ast.Visitor
     dup();
   }
 
-  void handleInTryStatement() {
-    if (!inTryStatement) return;
-    HBasicBlock block = close(new HExitTry());
-    HBasicBlock newBlock = graph.addNewBlock();
-    block.addSuccessor(newBlock);
-    open(newBlock);
-  }
-
   visitRethrow(ast.Rethrow node) {
     HInstruction exception = rethrowableException;
     if (exception == null) {