[Interpreter] Collect String feedback on CompareOps.

src/compiler/type-hint-analyzer.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/type-hint-analyzer.h"
 
 #include "src/assembler.h"
 #include "src/code-stubs.h"
 #include "src/ic/ic-state.h"
 #include "src/type-hints.h"
@@ skipping 32 matching lines @@
     case CompareICState::UNINITIALIZED:
       return CompareOperationHint::kNone;
     case CompareICState::SMI:
       return CompareOperationHint::kSignedSmall;
     case CompareICState::NUMBER:
       return Token::IsOrderedRelationalCompareOp(op)
                  ? CompareOperationHint::kNumberOrOddball
                  : CompareOperationHint::kNumber;
     case CompareICState::STRING:
     case CompareICState::INTERNALIZED_STRING:
+      return CompareOperationHint::kString;
     case CompareICState::UNIQUE_NAME:
     case CompareICState::RECEIVER:
     case CompareICState::KNOWN_RECEIVER:
     case CompareICState::BOOLEAN:
     case CompareICState::GENERIC:
       return CompareOperationHint::kAny;
   }
   UNREACHABLE();
   return CompareOperationHint::kNone;
 }
@@ skipping 56 matching lines @@
         break;
     }
   }
   return new (zone()) TypeHintAnalysis(infos, zone());
 }
 
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8