Use AST's type field and merge types for unary, binary & compare ICs

src/hydrogen-instructions.cc

Index: src/hydrogen-instructions.cc
diff --git a/src/hydrogen-instructions.cc b/src/hydrogen-instructions.cc
index f4a92a5316d3bca8a58df6fff3e39de8c96486d0..a8e8cc0a6dac529fff9e2b032fe249363940f397 100644
--- a/src/hydrogen-instructions.cc
+++ b/src/hydrogen-instructions.cc
@@ -3488,8 +3488,7 @@ HInstruction* HMod::New(Zone* zone,
                         HValue* context,
                         HValue* left,
                         HValue* right,
-                        bool has_fixed_right_arg,
-                        int fixed_right_arg_value) {
+                        Maybe<int> fixed_right_arg) {
   if (FLAG_fold_constants && left->IsConstant() && right->IsConstant()) {
     HConstant* c_left = HConstant::cast(left);
     HConstant* c_right = HConstant::cast(right);
@@ -3508,11 +3507,7 @@ HInstruction* HMod::New(Zone* zone,
       }
     }
   }
-  return new(zone) HMod(context,
-                        left,
-                        right,
-                        has_fixed_right_arg,
-                        fixed_right_arg_value);
+  return new(zone) HMod(context, left, right, fixed_right_arg);
 }