[llvm] [DAG] Propagate OrZero and DemandedElts for min/max in isKnownToBeAPowerOfTwo (PR #182369)

[Matt Arsenault via llvm-commits]

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@@ -0,0 +1,19 @@
+; RUN: llc -mtriple=aarch64-unknown-linux-gnu -O2 %s -o - | FileCheck %s
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arsenm wrote:

```suggestion
; RUN: llc -mtriple=aarch64-unknown-linux < %s | FileCheck %s
```

-O2 is the default and this doesn't depend on the environment

https://github.com/llvm/llvm-project/pull/182369