[llvm] [AggressiveInstCombine] Guard memset with length in [0, 1] (PR #213240)

[Nikita Popov via llvm-commits]

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@@ -0,0 +1,111 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 6
+; RUN: opt -passes=aggressive-instcombine -S < %s | FileCheck %s --check-prefix=AIC
----------------
nikic wrote:

```suggestion
; RUN: opt -passes=aggressive-instcombine -S < %s | FileCheck %s
```
If there's just one prefix, prefer using the default of CHECK.

https://github.com/llvm/llvm-project/pull/213240