[llvm] [LoopVectorize] Enable vectorization of uncountable loops with invariant bound loads via speculative hoisting and runtime versioning. (PR #195027)

[via llvm-commits]

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@@ -8163,6 +8166,179 @@ static void connectEpilogueVectorLoop(VPlan &EpiPlan, Loop *L,
       Phi.eraseFromParent();
 }
 
+// Is profitable to generate runtime check dominated version of the loop? which
+// has speculatively hoisted the loop bound load.
+static bool isSpeculativeBoundVersioningProfitable() { return true; }
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hiraditya wrote:

what is the idea behind having this function?

https://github.com/llvm/llvm-project/pull/195027