[llvm] [LV] Bundle partial reductions inside VPExpressionRecipe (PR #147302)

[Florian Hahn via llvm-commits]

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@@ -192,7 +192,7 @@ define i32 @dotp_unrolled(i32 %num_out, i64 %num_in, ptr %a, ptr %b) {
 ; CHECK:       LV(REG): VF = 16
 ; CHECK-NEXT:  LV(REG): Found max usage: 2 item
 ; CHECK-NEXT:  LV(REG): RegisterClass: Generic::ScalarRC, 9 registers
-; CHECK-NEXT:  LV(REG): RegisterClass: Generic::VectorRC, 12 registers
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fhahn wrote:

Hmm, do you know why the register usage increased here?

https://github.com/llvm/llvm-project/pull/147302