[llvm] [AArch64] Unrolling of loops with vector instructions. (PR #147420)

[Ramkumar Ramachandra via llvm-commits]

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+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5
+; RUN: opt -p loop-unroll -mtriple=arm64-apple-macosx -mcpu=apple-m1 -S %s | FileCheck --check-prefix=APPLE %s
+; RUN: opt -p loop-unroll -S %s -mtriple aarch64 | FileCheck %s -check-prefix=GENERIC
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artagnon wrote:

```suggestion
; RUN: opt -p loop-unroll -mtriple=arm64-apple-macosx -mcpu=apple-m1 -S %s | FileCheck --check-prefixes=COMMON,APPLE %s
; RUN: opt -p loop-unroll -S %s -mtriple aarch64 | FileCheck %s -check-prefixes=COMMON,GENERIC
```

https://github.com/llvm/llvm-project/pull/147420