[clang] [CIR] Upstream support for references (PR #138001)

[Erich Keane via cfe-commits]

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@@ -439,7 +439,13 @@ LValue CIRGenFunction::emitDeclRefLValue(const DeclRefExpr *e) {
       cgm.errorNYI(e->getSourceRange(), "emitDeclRefLValue: static local");
     }
 
-    return makeAddrLValue(addr, ty, AlignmentSource::Type);
+    // Drill into reference types.
+    LValue lv =
+        vd->getType()->isReferenceType()
+            ? emitLoadOfReferenceLValue(addr, getLoc(e->getSourceRange()),
+                                        vd->getType(), AlignmentSource::Decl)
+            : makeAddrLValue(addr, ty, AlignmentSource::Decl);
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erichkeane wrote:

Why did the 'alignment source' change here?  Is that expected?

https://github.com/llvm/llvm-project/pull/138001