From: Samuel Iglesias Gonsálvez <sigles...@igalia.com> Signed-off-by: Samuel Iglesias Gonsálvez <sigles...@igalia.com> --- src/intel/compiler/brw_fs_nir.cpp | 32 ++++++++++++++++++++++++++++++++ 1 file changed, 32 insertions(+)
diff --git a/src/intel/compiler/brw_fs_nir.cpp b/src/intel/compiler/brw_fs_nir.cpp index 1ce89520bf1..dd8e5191f4e 100644 --- a/src/intel/compiler/brw_fs_nir.cpp +++ b/src/intel/compiler/brw_fs_nir.cpp @@ -762,6 +762,38 @@ fs_visitor::nir_emit_alu(const fs_builder &bld, nir_alu_instr *instr) case nir_op_f2f64: case nir_op_f2i64: case nir_op_f2u64: + /* BDW PRM, vol02, Command Reference Instructions, mov - MOVE: + * + * "There is no direct conversion from HF to DF or DF to HF. + * Use two instructions and F (Float) as an intermediate type. + * + * There is no direct conversion from HF to Q/UQ or Q/UQ to HF. + * Use two instructions and F (Float) or a word integer type + * or a DWord integer type as an intermediate type." + */ + if (nir_src_bit_size(instr->src[0].src) == 16) { + brw_reg_type type; + switch (instr->op) { + case nir_op_f2f64: + type = BRW_REGISTER_TYPE_F; + break; + case nir_op_f2i64: + type = BRW_REGISTER_TYPE_D; + break; + case nir_op_f2u64: + type = BRW_REGISTER_TYPE_UD; + break; + default: + unreachable("Not supported"); + } + fs_reg tmp = bld.vgrf(type, 1); + inst = bld.MOV(tmp, op[0]); + inst->saturate = instr->dest.saturate; + inst = bld.MOV(result, tmp); + inst->saturate = instr->dest.saturate; + break; + } + /* fallthrough */ case nir_op_i2f64: case nir_op_i2i64: case nir_op_u2f64: -- 2.14.1 _______________________________________________ mesa-dev mailing list mesa-dev@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/mesa-dev