Fix a few underpopulated testdata files

[sdasgup3]

The following tests does not test any stablehlo ops other than stablehlo.constant. From the name It seems they are intended to test some other ops but skipped somehow. Let explore fixing (delete or populate as intended) them.

https://github.com/openxla/stablehlo/blob/main/stablehlo/testdata/integer_pow_dtypes_shape_complex64_20_30__y_1.mlir
https://github.com/openxla/stablehlo/blob/main/stablehlo/testdata/device_put_dtypes_shape_int32_3_4__device_None.mlir
https://github.com/openxla/stablehlo/blob/main/stablehlo/testdata/convert_element_type_dtypes_to_dtypes_shape_uint8_100_100__olddtype_uint8_newdtype_uint8.mlir
https://github.com/openxla/stablehlo/blob/main/stablehlo/testdata/broadcast_in_dim_dtypes_shape_complex64_2__outshape__2___broadcastdimensions__0.mlir
https://github.com/openxla/stablehlo/blob/main/stablehlo/testdata/broadcast_in_dim_dtypes_shape_uint32_2__outshape__2___broadcastdimensions__0.mlir
https://github.com/openxla/stablehlo/blob/main/stablehlo/testdata/stop_gradient_float32_20_20.mlir
https://github.com/openxla/stablehlo/blob/main/stablehlo/testdata/convert_element_type_dtypes_to_dtypes_shape_float32_100_100__olddtype_float32_newdtype_float32.mlir
https://github.com/openxla/stablehlo/blob/main/stablehlo/testdata/stop_gradient_int8_20_20.mlir
https://github.com/openxla/stablehlo/blob/main/stablehlo/testdata/convert_element_type_dtypes_to_dtypes_shape_int32_100_100__olddtype_int32_newdtype_int32.mlir
https://github.com/openxla/stablehlo/blob/main/stablehlo/testdata/broadcast_in_dim_dtypes_shape_bfloat16_2__outshape__2___broadcastdimensions__0.mlir
https://github.com/openxla/stablehlo/blob/main/stablehlo/testdata/device_put_dtypes_shape_uint32_3_4__device_None.mlir
https://github.com/openxla/stablehlo/blob/main/stablehlo/testdata/convert_element_type_dtypes_to_dtypes_shape_int8_100_100__olddtype_int8_newdtype_int8.mlir
https://github.com/openxla/stablehlo/blob/main/stablehlo/testdata/device_put_dtypes_shape_bfloat16_3_4__device_None.mlir
https://github.com/openxla/stablehlo/blob/main/stablehlo/testdata/convert_element_type_dtypes_to_dtypes_shape_bool_100_100__olddtype_bool_newdtype_bool.mlir
https://github.com/openxla/stablehlo/blob/main/stablehlo/testdata/integer_pow_dtypes_shape_bfloat16_20_30__y_1.mlir
https://github.com/openxla/stablehlo/blob/main/stablehlo/testdata/device_put_devices_shape_float32_3_4__device__cpu.mlir
https://github.com/openxla/stablehlo/blob/main/stablehlo/testdata/integer_pow_dtypes_shape_int8_20_30__y_1.mlir
https://github.com/openxla/stablehlo/blob/main/stablehlo/testdata/stop_gradient_uint32_20_20.mlir
https://github.com/openxla/stablehlo/blob/main/stablehlo/testdata/convert_element_type_dtypes_to_dtypes_shape_bfloat16_100_100__olddtype_bfloat16_newdtype_bfloat16.mlir
https://github.com/openxla/stablehlo/blob/main/stablehlo/testdata/broadcast_in_dim_dtypes_shape_int8_2__outshape__2___broadcastdimensions__0.mlir
https://github.com/openxla/stablehlo/blob/main/stablehlo/testdata/integer_pow_dtypes_shape_int32_20_30__y_1.mlir
https://github.com/openxla/stablehlo/blob/main/stablehlo/testdata/stop_gradient_uint16_20_20.mlir
https://github.com/openxla/stablehlo/blob/main/stablehlo/testdata/device_put_dtypes_shape_int8_3_4__device_None.mlir
https://github.com/openxla/stablehlo/blob/main/stablehlo/testdata/stop_gradient_float16_20_20.mlir
https://github.com/openxla/stablehlo/blob/main/stablehlo/testdata/convert_element_type_dtypes_to_dtypes_shape_int16_100_100__olddtype_int16_newdtype_int16.mlir
https://github.com/openxla/stablehlo/blob/main/stablehlo/testdata/stop_gradient_int32_20_20.mlir
https://github.com/openxla/stablehlo/blob/main/stablehlo/testdata/device_put_dtypes_shape_uint16_3_4__device_None.mlir
https://github.com/openxla/stablehlo/blob/main/stablehlo/testdata/device_put_dtypes_shape_int16_3_4__device_None.mlir
https://github.com/openxla/stablehlo/blob/main/stablehlo/testdata/broadcast_in_dim_dtypes_shape_uint8_2__outshape__2___broadcastdimensions__0.mlir
https://github.com/openxla/stablehlo/blob/main/stablehlo/testdata/device_put_dtypes_shape_complex64_3_4__device_None.mlir
https://github.com/openxla/stablehlo/blob/main/stablehlo/testdata/convert_element_type_dtypes_to_dtypes_shape_uint16_100_100__olddtype_uint16_newdtype_uint16.mlir
https://github.com/openxla/stablehlo/blob/main/stablehlo/testdata/integer_pow_dtypes_shape_uint16_20_30__y_1.mlir
https://github.com/openxla/stablehlo/blob/main/stablehlo/testdata/convert_element_type_dtypes_to_dtypes_shape_float16_100_100__olddtype_float16_newdtype_float16.mlir
https://github.com/openxla/stablehlo/blob/main/stablehlo/testdata/stop_gradient_int16_20_20.mlir
https://github.com/openxla/stablehlo/blob/main/stablehlo/testdata/integer_pow_dtypes_shape_uint8_20_30__y_1.mlir
https://github.com/openxla/stablehlo/blob/main/stablehlo/testdata/broadcast_in_dim_dtypes_shape_bool_2__outshape__2___broadcastdimensions__0.mlir
https://github.com/openxla/stablehlo/blob/main/stablehlo/testdata/convert_element_type_dtypes_to_dtypes_shape_uint32_100_100__olddtype_uint32_newdtype_uint32.mlir
https://github.com/openxla/stablehlo/blob/main/stablehlo/testdata/integer_pow_dtypes_shape_float16_20_30__y_1.mlir
https://github.com/openxla/stablehlo/blob/main/stablehlo/testdata/stop_gradient_bfloat16_20_20.mlir
https://github.com/openxla/stablehlo/blob/main/stablehlo/testdata/broadcast_in_dim_dtypes_shape_int16_2__outshape__2___broadcastdimensions__0.mlir
https://github.com/openxla/stablehlo/blob/main/stablehlo/testdata/integer_pow_dtypes_shape_uint32_20_30__y_1.mlir
https://github.com/openxla/stablehlo/blob/main/stablehlo/testdata/integer_pow_dtypes_shape_int16_20_30__y_1.mlir
https://github.com/openxla/stablehlo/blob/main/stablehlo/testdata/broadcast_in_dim_dtypes_shape_uint16_2__outshape__2___broadcastdimensions__0.mlir
https://github.com/openxla/stablehlo/blob/main/stablehlo/testdata/device_put_dtypes_shape_float16_3_4__device_None.mlir
https://github.com/openxla/stablehlo/blob/main/stablehlo/testdata/convert_element_type_dtypes_to_dtypes_shape_complex64_100_100__olddtype_complex64_newdtype_complex64.mlir
https://github.com/openxla/stablehlo/blob/main/stablehlo/testdata/stop_gradient_uint8_20_20.mlir
https://github.com/openxla/stablehlo/blob/main/stablehlo/testdata/device_put_dtypes_shape_bool_3_4__device_None.mlir
https://github.com/openxla/stablehlo/blob/main/stablehlo/testdata/device_put_dtypes_shape_float32_3_4__device_None.mlir
https://github.com/openxla/stablehlo/blob/main/stablehlo/testdata/integer_pow_dtypes_shape_float32_20_30__y_1.mlir
https://github.com/openxla/stablehlo/blob/main/stablehlo/testdata/stop_gradient_bool_20_20.mlir
https://github.com/openxla/stablehlo/blob/main/stablehlo/testdata/device_put_dtypes_shape_uint8_3_4__device_None.mlir
https://github.com/openxla/stablehlo/blob/main/stablehlo/testdata/broadcast_in_dim_dtypes_shape_float16_2__outshape__2___broadcastdimensions__0.mlir
https://github.com/openxla/stablehlo/blob/main/stablehlo/testdata/broadcast_in_dim_dtypes_shape_int32_2__outshape__2___broadcastdimensions__0.mlir
https://github.com/openxla/stablehlo/blob/main/stablehlo/testdata/stop_gradient_complex64_20_20.mlir
https://github.com/openxla/stablehlo/blob/main/stablehlo/testdata/broadcast_in_dim_dtypes_shape_float32_2__outshape__2___broadcastdimensions__0.mlir

[sdasgup3]

As pointed by @ghpvnist,
There are tests (e.g.
https://github.com/openxla/stablehlo/blob/main/stablehlo/testdata/integer_pow_dtypes_shape_complex64_20_30__y_0.mlir) with test-name suggesting something else that what the test is doing(e.g. the test does broadcast but the test name suggests it should be doing integer pow).