[clang] [CIR] Fix calling defined functions (PR #137271)

[Erich Keane via cfe-commits]

================
@@ -773,6 +773,58 @@ cir::FuncOp CIRGenModule::getOrCreateCIRFunction(
     StringRef mangledName, mlir::Type funcType, GlobalDecl gd, bool forVTable,
     bool dontDefer, bool isThunk, ForDefinition_t isForDefinition,
     mlir::ArrayAttr extraAttrs) {
+  const Decl *d = gd.getDecl();
+
+  if (isThunk)
+    errorNYI(d->getSourceRange(), "getOrCreateCIRFunction: thunk");
+
+  // In what follows, we continue past 'errorNYI' as if nothing happened because
+  // the rest of the implementation is better than doing nothing.
+
+  // Any attempts to use a MultiVersion function should result in retrieving the
----------------
erichkeane wrote:

Fixed in classic-codegen: 785ab45c2b300ba6291d8fb21762eabc050275f6

https://github.com/llvm/llvm-project/pull/137271