[turbofan] Also consume number type feedback for abstract equality.

src/compiler/representation-change.cc

 // Copyright 2015 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/compiler/representation-change.h"
 
 #include <sstream>
 
 #include "src/base/bits.h"
 #include "src/code-factory.h"
@@ skipping 355 matching lines @@
       return jsgraph()->Float64Constant(
           std::numeric_limits<double>::quiet_NaN());
     } else if (output_type->Is(Type::TaggedSigned())) {
       node = InsertChangeTaggedSignedToInt32(node);
       op = machine()->ChangeInt32ToFloat64();
     } else if (output_type->Is(Type::Number())) {
       op = simplified()->ChangeTaggedToFloat64();
     } else if (output_type->Is(Type::NumberOrOddball())) {
       // TODO(jarin) Here we should check that truncation is Number.
       op = simplified()->TruncateTaggedToFloat64();
+    } else if (use_info.type_check() == TypeCheckKind::kNumber ||
+               (use_info.type_check() == TypeCheckKind::kNumberOrOddball &&
+                !output_type->Maybe(Type::BooleanOrNullOrNumber()))) {
+      op = simplified()->CheckedTaggedToFloat64(CheckTaggedInputMode::kNumber);
     } else if (use_info.type_check() == TypeCheckKind::kNumberOrOddball) {
-      op = simplified()->CheckedTaggedToFloat64();
+      op = simplified()->CheckedTaggedToFloat64(
+          CheckTaggedInputMode::kNumberOrOddball);
     }
   } else if (output_rep == MachineRepresentation::kFloat32) {
     op = machine()->ChangeFloat32ToFloat64();
   }
   if (op == nullptr) {
     return TypeError(node, output_rep, output_type,
                      MachineRepresentation::kFloat64);
   }
   return InsertConversion(node, op, use_node);
 }
@@ skipping 422 matching lines @@
 }
 
 Node* RepresentationChanger::InsertChangeTaggedToFloat64(Node* node) {
   return jsgraph()->graph()->NewNode(simplified()->ChangeTaggedToFloat64(),
                                      node);
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8