[clang] [CIR] Upstream support for cir.get_global (PR #135095)

[Erich Keane via cfe-commits]

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@@ -200,6 +200,105 @@ void CIRGenModule::emitGlobalFunctionDefinition(clang::GlobalDecl gd,
   }
 }
 
+mlir::Operation *CIRGenModule::getGlobalValue(StringRef name) {
+  mlir::Operation *global = mlir::SymbolTable::lookupSymbolIn(theModule, name);
+  if (!global)
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erichkeane wrote:

Er... what does this do?  This 'if' ends up being a do-nothing here, since it just returns 'global' anyway.

https://github.com/llvm/llvm-project/pull/135095