Matt Turner <matts...@gmail.com> writes:
> One program affected:
>
> instructions in affected programs: 246 -> 244 (-0.81%)
> ---
> src/mesa/drivers/dri/i965/brw_fs_dead_code_eliminate.cpp | 7 +++++++
> 1 file changed, 7 insertions(+)
>
> diff --git a/src/mesa/drivers/dri/i965/brw_fs_dead_code_eliminate.cpp
> b/src/mesa/drivers/dri/i965/brw_fs_dead_code_eliminate.cpp
> index 6addbb3..1ae7606 100644
> --- a/src/mesa/drivers/dri/i965/brw_fs_dead_code_eliminate.cpp
> +++ b/src/mesa/drivers/dri/i965/brw_fs_dead_code_eliminate.cpp
> @@ -80,6 +80,13 @@ fs_visitor::dead_code_eliminate()
> }
> }
>
> + if (inst->dst.file == GRF) {
> + if (!inst->is_partial_write()) {
> + int var = live_intervals->var_from_reg(&inst->dst);
> + BITSET_CLEAR(live, var);
> + }
> + }Any more effect if you: + int var = live_intervals->var_from_vgrf[inst->dst.reg]; + for (int i = 0; i < inst->regs_written; i++) + BITSET_CLEAR(live, var + i); instead?
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