[turbofan] Turn various diamonds into selects.

test/cctest/compiler/test-changes-lowering.cc

Index: test/cctest/compiler/test-changes-lowering.cc
diff --git a/test/cctest/compiler/test-changes-lowering.cc b/test/cctest/compiler/test-changes-lowering.cc
index a015c501adba42e780e52721888e9fa2ffa18a66..02ba4a7fb156b95203b88dde7129549715e9b181 100644
--- a/test/cctest/compiler/test-changes-lowering.cc
+++ b/test/cctest/compiler/test-changes-lowering.cc
@@ -10,6 +10,7 @@
 #include "src/compiler/js-graph.h"
 #include "src/compiler/node-properties-inl.h"
 #include "src/compiler/pipeline.h"
+#include "src/compiler/select-lowering.h"
 #include "src/compiler/simplified-lowering.h"
 #include "src/compiler/verifier.h"
 #include "src/execution.h"
@@ -126,9 +127,11 @@ class ChangesLoweringTester : public GraphBuilderTester<ReturnType> {
     // Run the graph reducer with changes lowering on a single node.
     CompilationInfo info(this->isolate(), this->zone());
     Linkage linkage(this->zone(), &info);
-    ChangeLowering lowering(&jsgraph, &linkage);
+    ChangeLowering change_lowering(&jsgraph, &linkage);
+    SelectLowering select_lowering(this->graph(), this->common());
     GraphReducer reducer(this->graph());
-    reducer.AddReducer(&lowering);
+    reducer.AddReducer(&change_lowering);
+    reducer.AddReducer(&select_lowering);
     reducer.ReduceNode(change);
     Verifier::Run(this->graph(), Verifier::UNTYPED);
   }