[llvm] [AArch64] Enable SVE MaxBW for Neoverse-N2, prefer fixed at same cost (PR #195108)

[Sander de Smalen via llvm-commits]

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@@ -17,7 +17,7 @@
 
 ; RUN: opt -mtriple=aarch64 -mcpu=neoverse-n2 \
 ; RUN:     -force-target-instruction-cost=1 -passes=loop-vectorize -S -debug-only=loop-vectorize --disable-output < %s 2>&1 \
-; RUN:     | FileCheck %s --check-prefixes=VSCALEFORTUNING1
+; RUN:     | FileCheck %s --check-prefixes=NEOVERSEV2
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sdesmalen-arm wrote:

nit: maybe rename the CHECK prefix to `VSCALEFORTUNING1-PREFER-FIXED` (as otherwise both n2 and v2 use `NEOVERSEV2`, which would make it a misnomer)

https://github.com/llvm/llvm-project/pull/195108