[strong] Disallow implicit conversions for comparison

src/compiler/js-typed-lowering.cc

Index: src/compiler/js-typed-lowering.cc
diff --git a/src/compiler/js-typed-lowering.cc b/src/compiler/js-typed-lowering.cc
index 51ddc174cc94e9abc75dcf15c797e3f8fc386f6e..589040b5f140a3b60334fac096698694cb113b97 100644
--- a/src/compiler/js-typed-lowering.cc
+++ b/src/compiler/js-typed-lowering.cc
@@ -470,6 +470,9 @@ Reduction JSTypedLowering::ReduceJSComparison(Node* node) {
     }
     return r.ChangeToPureOperator(stringOp);
   }
+  if (r.IsStrong() && !r.BothInputsAre(Type::Number())) {
+    return NoChange();
+  }
 #if 0
   // TODO(turbofan): General ToNumber disabled for now because:
   //   a) The inserted ToNumber operation screws up observability of valueOf.