[llvm] [LoopVectorizer] Propagate underlying instruction to the cloned instances of VPPartialReductionRecipes (PR #123638)

[Nicholas Guy via llvm-commits]

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@@ -0,0 +1,94 @@
+; REQUIRES: asserts
+; RUN: opt -mattr=+neon,+dotprod -passes=loop-vectorize -debug-only=loop-vectorize -force-vector-interleave=1 -enable-epilogue-vectorization -epilogue-vectorization-force-VF=2 -disable-output %s 2>&1 | FileCheck %s
+
+target datalayout = "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128"
+target triple = "aarch64-none-unknown-elf"
+
+; Tests for printing VPlans that are enabled under AArch64
+; CHECK: VPlan 'Final VPlan for VF={8,16},UF={1}' {
+; CHECK-NEXT: Live-in ir<16> = VF * UF
+; CHECK-NEXT: Live-in ir<1024> = vector-trip-count
+; CHECK-NEXT: Live-in ir<1024> = original trip-count
+; CHECK-EMPTY:
+; CHECK-NEXT: ir-bb<entry>:
+; CHECK-NEXT: Successor(s): ir-bb<scalar.ph>, ir-bb<vector.main.loop.iter.check>
+; CHECK-EMPTY:
+; CHECK-NEXT: ir-bb<vector.main.loop.iter.check>:
+; CHECK-NEXT: Successor(s): ir-bb<scalar.ph>, ir-bb<vector.ph>
+; CHECK-EMPTY:
+; CHECK-NEXT: ir-bb<vector.ph>:
+; CHECK-NEXT: Successor(s): vector loop
+; CHECK-EMPTY:
+; CHECK-NEXT: <x1> vector loop: {
+; CHECK-NEXT:   vector.body:
+; CHECK-NEXT:     SCALAR-PHI vp<%0> = phi ir<0>, vp<%index.next>
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NickGuy-Arm wrote:

Done

https://github.com/llvm/llvm-project/pull/123638