freedreno/ir3: lower pack/unpack ops

Signed-off-by: Jonathan Marek <jonathan@marek.ca>
Reviewed-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Tested-by: Marge Bot <https://gitlab.freedesktop.org/mesa/mesa/merge_requests/3106>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/merge_requests/3106>

src/freedreno/ir3/ir3_nir.c

 		.lower_helper_invocation = true,
 		.lower_bitfield_insert_to_shifts = true,
 		.lower_bitfield_extract_to_shifts = true,
+		.lower_pack_half_2x16 = true,
+		.lower_pack_half_2x16_split = true,
+		.lower_pack_snorm_4x8 = true,
+		.lower_pack_snorm_2x16 = true,
+		.lower_pack_unorm_4x8 = true,
+		.lower_pack_unorm_2x16 = true,
+		.lower_unpack_half_2x16 = true,
+		.lower_unpack_half_2x16_split = true,
+		.lower_unpack_snorm_4x8 = true,
+		.lower_unpack_snorm_2x16 = true,
+		.lower_unpack_unorm_4x8 = true,
+		.lower_unpack_unorm_2x16 = true,
 		.use_interpolated_input_intrinsics = true,
 		.lower_rotate = true,
 		.lower_to_scalar = true,
 		.lower_helper_invocation = true,
 		.lower_bitfield_insert_to_shifts = true,
 		.lower_bitfield_extract_to_shifts = true,
+		.lower_pack_half_2x16 = true,
+		.lower_pack_half_2x16_split = true,
+		.lower_pack_snorm_4x8 = true,
+		.lower_pack_snorm_2x16 = true,
+		.lower_pack_unorm_4x8 = true,
+		.lower_pack_unorm_2x16 = true,
+		.lower_unpack_half_2x16 = true,
+		.lower_unpack_half_2x16_split = true,
+		.lower_unpack_snorm_4x8 = true,
+		.lower_unpack_snorm_2x16 = true,
+		.lower_unpack_unorm_4x8 = true,
+		.lower_unpack_unorm_2x16 = true,
 		.use_interpolated_input_intrinsics = true,
 		.lower_rotate = true,
 		.vectorize_io = true,