[llvm] [nfc] Add doc comment for `canReturn` in Analysis/CFG.h (PR #135862)

[via llvm-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-llvm-analysis

Author: Mircea Trofin (mtrofin)

<details>
<summary>Changes</summary>



---
Full diff: https://github.com/llvm/llvm-project/pull/135862.diff


1 Files Affected:

- (modified) llvm/include/llvm/Analysis/CFG.h (+4-1) 


``````````diff
diff --git a/llvm/include/llvm/Analysis/CFG.h b/llvm/include/llvm/Analysis/CFG.h
index 8451e88146d7c..052ffb2872af7 100644
--- a/llvm/include/llvm/Analysis/CFG.h
+++ b/llvm/include/llvm/Analysis/CFG.h
@@ -174,7 +174,10 @@ bool containsIrreducibleCFG(RPOTraversalT &RPOTraversal, const LoopInfoT &LI) {
 
   return false;
 }
+
+/// Return true if there is at least a path through which F can return, false if
+/// there is no such path.
 bool canReturn(const Function &F);
-} // End llvm namespace
+} // namespace llvm
 
 #endif

``````````

</details>


https://github.com/llvm/llvm-project/pull/135862