// RUN: cir-opt %s -cir-call-conv-lowering="classification-attr=test_classify" \
// RUN:   | FileCheck %s

!u16i = !cir.int<u, 16>

#extend_unsigned_arg = {
  return = { kind = "direct" },
  args   = [ { kind = "extend",
               coerced_type = !cir.int<u, 32>,
               sign_extend = false } ]
}

module attributes {
  dlti.dl_spec = #dlti.dl_spec<
    #dlti.dl_entry<i16, dense<16>: vector<2xi64>>,
    #dlti.dl_entry<i32, dense<32>: vector<2xi64>>>
} {

  cir.func @takes_u16(%arg0: !u16i)
      attributes { test_classify = #extend_unsigned_arg } {
    cir.return
  }

  // CHECK: cir.func{{.*}} @takes_u16(%arg0: !u16i {llvm.zeroext})

  cir.func @caller(%arg0: !u16i)
      attributes { test_classify = #extend_unsigned_arg } {
    cir.call @takes_u16(%arg0) : (!u16i) -> ()
    cir.return
  }

  // CHECK: cir.call @takes_u16(%arg0) : (!u16i {llvm.zeroext}) -> ()

}