[Mlir-commits] [mlir] [mlir][Transforms] Fix crash in `-remove-dead-values` on private functions (PR #169269)

[Mehdi Amini]

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@@ -118,6 +118,17 @@ func.func @main(%arg0 : i32) {
 
 // -----
 
+// CHECK-LABEL: func.func private @clean_func_op_remove_side_effecting_op() {
+// CHECK-NEXT:    return
+// CHECK-NEXT:  }
+func.func private @clean_func_op_remove_side_effecting_op(%arg0: i32) -> (i32) {
+  // vector.print has a side effect but the op is dead.
+  vector.print %arg0 : i32
+  return %arg0 : i32
+}
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joker-eph wrote:

I don't quite understand here: we can't just remove the print!
Instead I would think the %arg0 should be marked live because of the print.

https://github.com/llvm/llvm-project/pull/169269