intel/compiler: implement 16-bit pack/unpack opcodes

Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>

diff --git a/src/intel/compiler/brw_fs_nir.cpp b/src/intel/compiler/brw_fs_nir.cpp
index 9c802fb7c624c8a51862ccb907bcf2d938548eb2..4c8bcc4ebc9da71ed3dc14c3ec5ea967b69ae4ce 100644 (file)
--- a/src/intel/compiler/brw_fs_nir.cpp
+++ b/src/intel/compiler/brw_fs_nir.cpp
@@ -1314,6 +1314,7 @@ fs_visitor::nir_emit_alu(const fs_builder &bld, nir_alu_instr *instr)
       break;
 
    case nir_op_pack_64_2x32_split:
+   case nir_op_pack_32_2x16_split:
       bld.emit(FS_OPCODE_PACK, result, op[0], op[1]);
       break;
 
@@ -1326,6 +1327,15 @@ fs_visitor::nir_emit_alu(const fs_builder &bld, nir_alu_instr *instr)
       break;
    }
 
+   case nir_op_unpack_32_2x16_split_x:
+   case nir_op_unpack_32_2x16_split_y: {
+      if (instr->op == nir_op_unpack_32_2x16_split_x)
+         bld.MOV(result, subscript(op[0], BRW_REGISTER_TYPE_UW, 0));
+      else
+         bld.MOV(result, subscript(op[0], BRW_REGISTER_TYPE_UW, 1));
+      break;
+   }
+
    case nir_op_fpow:
       inst = bld.emit(SHADER_OPCODE_POW, result, op[0], op[1]);
       inst->saturate = instr->dest.saturate;