[Mesa-dev] [PATCH 11/32] i965/fs: Fix lower_load_payload() to take into account non-zero reg_offset.

[Jason Ekstrand]

Reviewed-by: Jason Ekstrand <jason.ekstrand at intel.com>

On Fri, Feb 6, 2015 at 9:42 AM, Francisco Jerez <currojerez at riseup.net>
wrote:

> Fixes metadata guess when instructions in the program specify a
> destination register with non-zero reg_offset and when the payload of
> a LOAD_PAYLOAD spans several registers.
> ---
>  src/mesa/drivers/dri/i965/brw_fs.cpp | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/src/mesa/drivers/dri/i965/brw_fs.cpp
> b/src/mesa/drivers/dri/i965/brw_fs.cpp
> index eccae06..163aa41 100644
> --- a/src/mesa/drivers/dri/i965/brw_fs.cpp
> +++ b/src/mesa/drivers/dri/i965/brw_fs.cpp
> @@ -3070,7 +3070,7 @@ fs_visitor::lower_load_payload()
>
>     foreach_block_and_inst_safe (block, fs_inst, inst, cfg) {
>        if (inst->dst.file == GRF) {
> -         const int dst_reg = vgrf_to_reg[inst->dst.reg];
> +         const int dst_reg = vgrf_to_reg[inst->dst.reg] +
> inst->dst.reg_offset;
>           bool force_sechalf = inst->force_sechalf &&
>                                !inst->force_writemask_all;
>           bool toggle_sechalf = inst->dst.width == 16 &&
> @@ -3119,7 +3119,7 @@ fs_visitor::lower_load_payload()
>                 }
>
>                 if (dst.file == GRF) {
> -                  const int dst_reg = vgrf_to_reg[dst.reg];
> +                  const int dst_reg = vgrf_to_reg[dst.reg] +
> dst.reg_offset;
>                    const bool force_writemask = mov->force_writemask_all;
>                    metadata[dst_reg].force_writemask_all = force_writemask;
>                    metadata[dst_reg].force_sechalf = mov->force_sechalf;
> --
> 2.1.3
>
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