[llvm] PreISelIntrinsicLowering: Lower llvm.exp/llvm.exp2 to a loop if scalable vec arg (PR #117568)

[Matt Arsenault via llvm-commits]

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@@ -457,6 +458,21 @@ class TargetLibraryInfo {
     return Impl->CustomNames.find(F)->second;
   }
 
+  static unsigned getISDNode(Intrinsic::ID ID) {
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arsenm wrote:

This belongs in TargetLowering, not TargetLibraryInfo 

https://github.com/llvm/llvm-project/pull/117568