Read type argument from local in constructor.

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

Index: sdk/lib/_internal/compiler/implementation/ssa/builder.dart
diff --git a/sdk/lib/_internal/compiler/implementation/ssa/builder.dart b/sdk/lib/_internal/compiler/implementation/ssa/builder.dart
index b86b54257dc4f0f63b378c859cab35bb5d54d7e7..95197e6455a29af55fe454e89a8bfb1f54c22fcf 100644
--- a/sdk/lib/_internal/compiler/implementation/ssa/builder.dart
+++ b/sdk/lib/_internal/compiler/implementation/ssa/builder.dart
@@ -3167,6 +3167,7 @@ class SsaBuilder extends ResolvedVisitor implements Visitor {
    */
   HInstruction readTypeVariable(ClassElement cls,
                                 TypeVariableElement variable) {
+    assert(currentElement.isInstanceMember());
     int index = RuntimeTypeInformation.getTypeVariableIndex(variable);
     String substitutionNameString = backend.namer.substitutionName(cls);
     HInstruction substitutionName = graph.addConstantString(
@@ -3429,8 +3430,8 @@ class SsaBuilder extends ResolvedVisitor implements Visitor {
       Constant constant = handler.compileNodeWithDefinitions(node, elements);
       stack.add(graph.addConstant(constant));
     } else if (element.isTypeVariable()) {
-      HInstruction value = readTypeVariable(currentElement.getEnclosingClass(),
-                                            element);
+      HInstruction value =
+          addTypeVariableReference(element.computeType(compiler));
       pushInvokeHelper1(backend.getRuntimeTypeToString(),
                         value, HType.STRING);
       pushInvokeHelper1(backend.getCreateRuntimeType(),