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

[Sam Tebbs via llvm-commits]

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@@ -22344,6 +22344,7 @@ class HorizontalReduction {
       return Builder.CreateBinOp((Instruction::BinaryOps)RdxOpcode, LHS, RHS,
                                  Name);
     }
+    case RecurKind::Sub:
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SamTebbs33 wrote:

I agree that it suggested sub is supported when it really isn't. Fixed now, thanks!

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