sfertile accepted this revision.
sfertile added a comment.

LGTM.



================
Comment at: llvm/lib/MC/MCContext.cpp:165
+    case MCObjectFileInfo::IsXCOFF:
+      // TODO: Need to implement class MCSymbolXCOFF.
+      break;
----------------
jasonliu wrote:
> sfertile wrote:
> > jasonliu wrote:
> > > JDevlieghere wrote:
> > > > See previous comment.
> > > It is certain that we will need MCSymbolXCOFF. But before we run into 
> > > cases where we actually need a MCSymbolXCOFF, we could use the generic 
> > > MCSymbol first for XCOFF platform. So I don't want to put a 
> > > llvm_unreachable here. 
> > Would it make sense to add an llvm_unreachable now, and the first patch 
> > that actually uses an MCSymbol stubs out the class and removes the 
> > unreachable?
> The first patch that uses MCSymbol do not necessarily need to stub out 
> MCSymbolXCOFF, as MCSymbol seems to be generic and usable until we are doing 
> some XCOFF specific things that needs to be represented by MCSymbolXCOFF. If 
> the intention is MCSymbol should never get used, and different object file 
> should have their own MCSymbolXXX class from the start, then I could add in 
> the llvm_unreachable here, and I would also propose to replace the "return 
> new (Name, *this) MCSymbol(MCSymbol::SymbolKindUnset, Name, IsTemporary);" 
> with an llvm_unreachable as well. 
> 
Ok I think falling through to create the generic MCSymbol in this patch is 
reasonable. 


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D58930/new/

https://reviews.llvm.org/D58930



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