[llvm] [AMDGPU] Add commute for some VOP3 inst (PR #121326)

[Matt Arsenault via llvm-commits]

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@@ -1254,7 +1257,7 @@ let SubtargetPredicate = isGFX10Plus in {
     def : PermlanePat<int_amdgcn_permlane16, V_PERMLANE16_B32_e64, vt>;
     def : PermlanePat<int_amdgcn_permlanex16, V_PERMLANEX16_B32_e64, vt>;
   }
-
+  let isCommutable = 1 in
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arsenm wrote:

Add braces 

https://github.com/llvm/llvm-project/pull/121326