[llvm] [LV] Restrict widest induction type to be IntegerType (NFC) (PR #128173)

[Ramkumar Ramachandra via llvm-commits]

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@@ -693,11 +694,11 @@ void LoopVectorizationLegality::addInductionPhi(
   const DataLayout &DL = Phi->getDataLayout();
 
   // Get the widest type.
-  if (!PhiTy->isFloatingPointTy()) {
+  if (PhiTy->isIntOrPtrTy()) {
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artagnon wrote:

If it weren't rejected by LoopVectorizationLegality, the later casts in LoopVectorize (which are stripped in this patch) would have crashed, no?

https://github.com/llvm/llvm-project/pull/128173