[flang-commits] [flang] [NFC][flang] Introduce FortranObjectViewOpInterface. (PR #166841)

[Slava Zakharin via flang-commits]

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@@ -938,8 +949,9 @@ def hlfir_EndAssociateOp : hlfir_Op<"end_associate", [MemoryEffects<[MemFree]>]>
   let hasVerifier = 1;
 }
 
-def hlfir_AsExprOp : hlfir_Op<"as_expr",
-    [DeclareOpInterfaceMethods<MemoryEffectsOpInterface>]> {
+def hlfir_AsExprOp
+    : hlfir_Op<"as_expr", [DeclareOpInterfaceMethods<MemoryEffectsOpInterface>,
+                           fir_FortranObjectViewOpInterface]> {
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vzakhari wrote:

Thanks for the comment, Jean!

Yes, attaching the interface to `hlfir.as_expr` feels a bit off, since the result is not a memory.  I will bring back the original code, and then we can think if we can remove it (i.e. make the `expr` source never alias with anything else, and let the codegen handle any conflicts).

https://github.com/llvm/llvm-project/pull/166841