[Mlir-commits] [mlir] [mlir] Fix a crash in ensure-debug-info-scope-on-llvm-func. (PR #178337)

[Christian Ulmann]

================
@@ -121,10 +121,13 @@ static void setLexicalBlockFileAttr(Operation *op) {
     // We assemble the full inline stack so the parent of this loc must be a
     // function
     auto funcOp = op->getParentOfType<LLVM::LLVMFuncOp>();
-    if (auto funcOpLoc = llvm::dyn_cast_if_present<FusedLoc>(funcOp.getLoc())) {
-      scopeAttr = cast<LLVM::DISubprogramAttr>(funcOpLoc.getMetadata());
-      op->setLoc(
-          CallSiteLoc::get(getNestedLoc(op, scopeAttr, calleeLoc), callerLoc));
+    if (funcOp) {
----------------
Dinistro wrote:

```suggestion
    if (auto funcOp = op->getParentOfType<LLVM::LLVMFuncOp>()) {
```
Nit: This is slightly more elegant

https://github.com/llvm/llvm-project/pull/178337