Make constants computations instead of values.

runtime/vm/intermediate_language_test.cc

Index: runtime/vm/intermediate_language_test.cc
diff --git a/runtime/vm/intermediate_language_test.cc b/runtime/vm/intermediate_language_test.cc
index 13eb7f4cd1077ba2f2a2215191dd8624ac60e5aa..62c8eca78b4d003cd2578587ef7ff3d1d41bc99f 100644
--- a/runtime/vm/intermediate_language_test.cc
+++ b/runtime/vm/intermediate_language_test.cc
@@ -27,11 +27,11 @@ TEST_CASE(OptimizationTests) {
   UseVal* use2 = new UseVal(def2);
   EXPECT(!use2->Equals(use1a));
 
-  ConstantVal* c1 = new ConstantVal(Bool::ZoneHandle(Bool::True()));
-  ConstantVal* c2 = new ConstantVal(Bool::ZoneHandle(Bool::True()));
+  ConstantComp* c1 = new ConstantComp(Bool::ZoneHandle(Bool::True()));
+  ConstantComp* c2 = new ConstantComp(Bool::ZoneHandle(Bool::True()));
   EXPECT(c1->Equals(c2));
-  ConstantVal* c3 = new ConstantVal(Object::ZoneHandle());
-  ConstantVal* c4 = new ConstantVal(Object::ZoneHandle());
+  ConstantComp* c3 = new ConstantComp(Object::ZoneHandle());
+  ConstantComp* c4 = new ConstantComp(Object::ZoneHandle());
   EXPECT(c3->Equals(c4));
   EXPECT(!c3->Equals(c1));
 }