[Mlir-commits] [mlir] [mlir][scf] Do not coalesce when an inner loop reads an outer iter_arg (PR #216853)

[Federico Bruzzone]

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@@ -489,3 +489,27 @@ func.func @inner_loop_yields_induction_var() -> index {
   }
   return %r : index
 }
+
+// -----
+
+// Verify that coalescing is not attempted when the body of the inner loop reads
+// an iteration argument of the outer loop directly. That value is fixed for a
+// whole run of the inner loop, whereas the value carried by the coalesced loop
+// is updated on every iteration.
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FedericoBruzzone wrote:

Please, remove this comment :D

https://github.com/llvm/llvm-project/pull/216853