[clang] Remove unused variable AllElementsInt. NFC.

[• Quuxplusone]

Summary

This has been unused ever since it was committed in b8a501ccf1.

[rnk]

lgtm

clang/lib/Sema/SemaDecl.cpp

void Sema::ActOnEnumBody(SourceLocation EnumLoc, SourceRange BraceRange,
   unsigned CharWidth = Context.getTargetInfo().getCharWidth();
   unsigned ShortWidth = Context.getTargetInfo().getShortWidth();
 
   // Verify that all the values are okay, compute the size of the values, and
   // reverse the list.
   unsigned NumNegativeBits = 0;
   unsigned NumPositiveBits = 0;
 
-  // Keep track of whether all elements have type int.
-  bool AllElementsInt = true;
-
   for (unsigned i = 0, e = Elements.size(); i != e; ++i) {
     EnumConstantDecl *ECD =
       cast_or_null<EnumConstantDecl>(Elements[i]);
     if (!ECD) continue;  // Already issued a diagnostic.
 
     const llvm::APSInt &InitVal = ECD->getInitVal();
 
     // Keep track of the size of positive and negative values.
     if (InitVal.isUnsigned() || InitVal.isNonNegative())
       NumPositiveBits = std::max(NumPositiveBits,
                                  (unsigned)InitVal.getActiveBits());
     else
       NumNegativeBits = std::max(NumNegativeBits,
                                  (unsigned)InitVal.getMinSignedBits());
-
-    // Keep track of whether every enum element has type int (very common).
-    if (AllElementsInt)
-      AllElementsInt = ECD->getType() == Context.IntTy;
   }
 
   // Figure out the type that should be used for this enum.
   QualType BestType;
   unsigned BestWidth;
 
   // C++0x N3000 [conv.prom]p3:
   //   An rvalue of an unscoped enumeration type whose underlying