[llvm] [Verifier] Add checks for loop metadata nodes (PR #182252)

[Matt Arsenault via llvm-commits]

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@@ -38,9 +38,9 @@ attributes #0 = { noinline optnone }
 
 !0 = distinct !{!0, !1, !2, !3}
 !1 = !{!"llvm.loop.unroll.enable"}
-!2 = !{!"llvm.loop.distribute.enable"}
+!2 = !{!"llvm.loop.distribute.enable", i1 1}
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arsenm wrote:

Syntax cleanups should be done separately 

https://github.com/llvm/llvm-project/pull/182252