Reviewed-by: Jason Ekstrand
On Tue, Jan 15, 2019 at 7:55 AM Iago Toral Quiroga
wrote:
> v2:
> - Do not propagate if the bit-size changes
> ---
> src/intel/compiler/brw_fs_cmod_propagation.cpp | 14 +-
> 1 file changed, 9 insertions(+), 5 deletions(-)
>
> diff --git a/src/intel/compiler/brw_fs_cmod_propagation.cpp
> b/src/intel/compiler/brw_fs_cmod_propagation.cpp
> index 7bb5c9afbc9..57d4e645c05 100644
> --- a/src/intel/compiler/brw_fs_cmod_propagation.cpp
> +++ b/src/intel/compiler/brw_fs_cmod_propagation.cpp
> @@ -244,8 +244,7 @@ opt_cmod_propagation_local(const gen_device_info
> *devinfo,
> /* CMP's result is the same regardless of dest type. */
> if (inst->conditional_mod == BRW_CONDITIONAL_NZ &&
> scan_inst->opcode == BRW_OPCODE_CMP &&
> -(inst->dst.type == BRW_REGISTER_TYPE_D ||
> - inst->dst.type == BRW_REGISTER_TYPE_UD)) {
> +brw_reg_type_is_integer(inst->dst.type)) {
> inst->remove(block);
> progress = true;
> break;
> @@ -258,9 +257,14 @@ opt_cmod_propagation_local(const gen_device_info
> *devinfo,
> break;
>
> /* Comparisons operate differently for ints and floats */
> -if (scan_inst->dst.type != inst->dst.type &&
> -(scan_inst->dst.type == BRW_REGISTER_TYPE_F ||
> - inst->dst.type == BRW_REGISTER_TYPE_F))
> +if (brw_reg_type_is_floating_point(scan_inst->dst.type) !=
> +brw_reg_type_is_floating_point(inst->dst.type))
> + break;
> +
> +/* Comparison result may be altered if the bit-size changes
> + * since that affects range, denorms, etc
> + */
> +if (type_sz(scan_inst->dst.type) != type_sz(inst->dst.type))
> break;
>
> /* If the instruction generating inst's source also wrote the
> --
> 2.17.1
>
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