[compiler] Remove CompilationInfo::opt_count field.

src/crankshaft/hydrogen.h

Index: src/crankshaft/hydrogen.h
diff --git a/src/crankshaft/hydrogen.h b/src/crankshaft/hydrogen.h
index 10c0baa29d7737d497567e30aaa552158e268abf..1475374d83537dc04478215ec1e6c59d1e728651 100644
--- a/src/crankshaft/hydrogen.h
+++ b/src/crankshaft/hydrogen.h
@@ -392,13 +392,11 @@ class HGraph final : public ZoneObject {
   }
   int maximum_environment_size() { return maximum_environment_size_; }
 
-  bool use_optimistic_licm() {
-    return use_optimistic_licm_;
-  }
+  bool allow_code_motion() const { return allow_code_motion_; }
+  void set_allow_code_motion(bool value) { allow_code_motion_ = value; }
 
-  void set_use_optimistic_licm(bool value) {
-    use_optimistic_licm_ = value;
-  }
+  bool use_optimistic_licm() const { return use_optimistic_licm_; }
+  void set_use_optimistic_licm(bool value) { use_optimistic_licm_ = value; }
 
   void MarkDependsOnEmptyArrayProtoElements() {
     // Add map dependency if not already added.
@@ -480,6 +478,7 @@ class HGraph final : public ZoneObject {
   CallInterfaceDescriptor descriptor_;
   Zone* zone_;
 
+  bool allow_code_motion_;
   bool use_optimistic_licm_;
   bool depends_on_empty_array_proto_elements_;
   int type_change_checksum_;