Index: flang/test/Fir/types-to-llvm.fir
===================================================================
--- flang/test/Fir/types-to-llvm.fir
+++ flang/test/Fir/types-to-llvm.fir
@@ -196,6 +196,34 @@
 
 // -----
 
+// Test MLIR `complex<KIND>` conversion.
+
+func private @foo0(%arg0: complex<f16>)
+// CHECK-LABEL: foo0
+// CHECK-SAME: !llvm.struct<(f16, f16)>)
+
+func private @foo1(%arg0: complex<bf16>)
+// CHECK-LABEL: foo1
+// CHECK-SAME: !llvm.struct<(bf16, bf16)>)
+
+func private @foo2(%arg0: complex<f32>)
+// CHECK-LABEL: foo2
+// CHECK-SAME: !llvm.struct<(f32, f32)>)
+
+func private @foo3(%arg0: complex<f64>)
+// CHECK-LABEL: foo3
+// CHECK-SAME: !llvm.struct<(f64, f64)>)
+
+func private @foo4(%arg0: complex<f80>)
+// CHECK-LABEL: foo4
+// CHECK-SAME: !llvm.struct<(f80, f80)>)
+
+func private @foo5(%arg0: complex<f128>)
+// CHECK-LABEL: foo5
+// CHECK-SAME: !llvm.struct<(f128, f128)>)
+
+// -----
+
 // Test `!fir.complex<KIND>` conversion.
 
 func private @foo0(%arg0: !fir.complex<2>)