[llvm] [LV] Create in-loop sub reductions (PR #147026)

[Sam Tebbs via llvm-commits]

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@@ -1201,6 +1209,7 @@ bool RecurrenceDescriptor::isFixedOrderRecurrence(PHINode *Phi, Loop *TheLoop,
 
 unsigned RecurrenceDescriptor::getOpcode(RecurKind Kind) {
   switch (Kind) {
+  case RecurKind::Sub:
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SamTebbs33 wrote:

That's much better, thanks! Done.

https://github.com/llvm/llvm-project/pull/147026