Encode CEntryStub properties in the minor key.

src/x87/code-stubs-x87.h

Index: src/x87/code-stubs-x87.h
diff --git a/src/x87/code-stubs-x87.h b/src/x87/code-stubs-x87.h
index 63255cad2d0030576958a75b452869e9954208ac..5f42573f6cf84fc0c1a70e34cb82184bd934761a 100644
--- a/src/x87/code-stubs-x87.h
+++ b/src/x87/code-stubs-x87.h
@@ -28,7 +28,7 @@ class StoreBufferOverflowStub: public PlatformCodeStub {
 
  private:
   Major MajorKey() const { return StoreBufferOverflow; }
-  int MinorKey() const { return 0; }
+  uint32_t MinorKey() const { return 0; }
 };
 
 
@@ -68,7 +68,7 @@ class SubStringStub: public PlatformCodeStub {
 
  private:
   Major MajorKey() const { return SubString; }
-  int MinorKey() const { return 0; }
+  uint32_t MinorKey() const { return 0; }
 
   void Generate(MacroAssembler* masm);
 };
@@ -96,7 +96,7 @@ class StringCompareStub: public PlatformCodeStub {
 
  private:
   virtual Major MajorKey() const { return StringCompare; }
-  virtual int MinorKey() const { return 0; }
+  virtual uint32_t MinorKey() const { return 0; }
   virtual void Generate(MacroAssembler* masm);
 
   static void GenerateAsciiCharsCompareLoop(
@@ -155,7 +155,7 @@ class NameDictionaryLookupStub: public PlatformCodeStub {
 
   Major MajorKey() const { return NameDictionaryLookup; }
 
-  int MinorKey() const {
+  uint32_t MinorKey() const {
     return DictionaryBits::encode(dictionary_.code()) |
         ResultBits::encode(result_.code()) |
         IndexBits::encode(index_.code()) |
@@ -383,7 +383,7 @@ class RecordWriteStub: public PlatformCodeStub {
 
   Major MajorKey() const { return RecordWrite; }
 
-  int MinorKey() const {
+  uint32_t MinorKey() const {
     return ObjectBits::encode(object_.code()) |
         ValueBits::encode(value_.code()) |
         AddressBits::encode(address_.code()) |