[PATCH] D80642: [AIX] Emit AvailableExternally Linkage on AIX

[Xiangling Liao via Phabricator via llvm-commits]

Xiangling_L marked 3 inline comments as done.
Xiangling_L added inline comments.


================
Comment at: llvm/lib/CodeGen/AsmPrinter/AsmPrinter.cpp:442
   case GlobalValue::AvailableExternallyLinkage:
+    if (TM.getTargetTriple().isOSBinFormatXCOFF()) {
+      OutStreamer->emitSymbolAttribute(GVSym, MCSA_Extern);
----------------
DiggerLin wrote:
> DiggerLin wrote:
> > I think we look AvailableExternallyLinkage as AvailableExternallyLinkage
> > 
> > you can change as  
> > ```
> > case GlobalValue::ExternalLinkage:
> > case GlobalValue::AvailableExternallyLinkage:
> >     if (MAI->hasDotExternDirective() && GV->isDeclarationForLinker()) {
> > }
> > ```
> > and we do not need code 
> > ````
> > case GlobalValue::AvailableExternallyLinkage:
> >     if (TM.getTargetTriple().isOSBinFormatXCOFF()) {
> >    ....
> > }
> > ````
> > here.
> sorry it should be "I think we look AvailableExternallyLinkage as ExternalLinkage"
Thank you for your suggestion. I agree that it would give the query  more semantic meaning. But since if a GV falls under the `AvailableExternallyLinkage` category, then `GV->isDeclarationForLinker()`is always true. So it seems we only need `MAI->hasDotExternDirective()` here?


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  https://reviews.llvm.org/D80642/new/

https://reviews.llvm.org/D80642