[clang] [llvm] [IndVarSimplify] Sink unused l-invariant loads in preheader. (PR #157559)

[Sirish Pande via llvm-commits]

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@@ -30,3 +30,64 @@ loop:
 exit:
   ret i32 %add
 }
+
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srpande wrote:

Please add at least one (two is better) test with noalias & alias_info metadata for loads and stores; and show whether load will sink or not depending on metadata.

I would also write these tests on a separate .ll file.

https://github.com/llvm/llvm-project/pull/157559