[llvm] [AArch64] Enable maximize vector bandwidth for Neoverse-V1, V2 and N1 (PR #166748)

[Gaëtan Bossu via llvm-commits]

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@@ -50,7 +50,7 @@ define i64 @test_external_iv_user(ptr %a, ptr %b) #0 {
 ; CHECK-NEXT: Cost of 0 for VF 16: induction instruction   %i.iv = phi i64 [ 0, %entry ], [ %i.iv.next, %for.body ]
 ; CHECK-NEXT: Cost of 0 for VF 16: EMIT vp<{{.+}}> = CANONICAL-INDUCTION ir<0>, vp<%index.next>
 ; CHECK: Cost for VF 16: 57
-; CHECK: LV: Selecting VF: vscale x 2
+; CHECK: LV: Selecting VF: 16
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gbossu wrote:

Does that mean that max vector bandwidth implies `FoldTailByMasking==false`?

https://github.com/llvm/llvm-project/pull/166748