[llvm] [LoopVectorize] Perform loop versioning for some early exit loops (PR #120603)

[David Sherwood via llvm-commits]

================
@@ -1585,6 +1591,22 @@ class LoopVectorizationCostModel {
                                        ElementCount MaxSafeVF,
                                        bool FoldTailByMasking);
 
+  bool isSafeForAnyVectorWidth() const {
+    return Legal->isSafeForAnyVectorWidth() &&
+           (!Legal->hasUncountableEarlyExit() ||
+            !Legal->getNumPotentiallyFaultingLoads());
+  }
----------------
david-arm wrote:

Done

https://github.com/llvm/llvm-project/pull/120603