[llvm] [LV][NFC] Introduce LoopVectorizationUtils for shared utility functions (PR #194951)

[Hassnaa Hamdi via llvm-commits]

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@@ -239,7 +239,7 @@ class LoopVectorizationRequirements {
       ExactFPMathInst = I;
   }
 
-  Instruction *getExactFPInst() { return ExactFPMathInst; }
+  Instruction *getExactFPInst() const { return ExactFPMathInst; }
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hassnaaHamdi wrote:

They are needed because I'm passing a const instance of the Legality class. I thought about adding them in a separate commit instead of a PR as they are very tiny changes.

https://github.com/llvm/llvm-project/pull/194951