[Mesa-dev] [PATCH 1/2] nir: add an option for skipping split_alu_of_phi
Bas Nieuwenhuizen
bas at basnieuwenhuizen.nl
Tue Apr 23 08:45:11 UTC 2019
On Tue, Apr 23, 2019 at 9:35 AM Samuel Pitoiset
<samuel.pitoiset at gmail.com> wrote:
>
> Signed-off-by: Samuel Pitoiset <samuel.pitoiset at gmail.com>
> ---
> src/amd/vulkan/radv_shader.c | 2 +-
> src/compiler/nir/nir.h | 3 ++-
> src/compiler/nir/nir_opt_if.c | 17 ++++++++++-------
> src/freedreno/ir3/ir3_nir.c | 2 +-
> src/gallium/auxiliary/nir/tgsi_to_nir.c | 2 +-
> src/gallium/drivers/freedreno/a2xx/ir2_nir.c | 2 +-
> src/gallium/drivers/radeonsi/si_shader_nir.c | 2 +-
> src/intel/compiler/brw_nir.c | 2 +-
> src/mesa/state_tracker/st_glsl_to_nir.cpp | 2 +-
> 9 files changed, 19 insertions(+), 15 deletions(-)
>
> diff --git a/src/amd/vulkan/radv_shader.c b/src/amd/vulkan/radv_shader.c
> index 13f1f9aa9dc..54a4e732230 100644
> --- a/src/amd/vulkan/radv_shader.c
> +++ b/src/amd/vulkan/radv_shader.c
> @@ -158,7 +158,7 @@ radv_optimize_nir(struct nir_shader *shader, bool optimize_conservatively,
> NIR_PASS(progress, shader, nir_opt_remove_phis);
> NIR_PASS(progress, shader, nir_opt_dce);
> }
> - NIR_PASS(progress, shader, nir_opt_if, true);
> + NIR_PASS(progress, shader, nir_opt_if, true, false);
> NIR_PASS(progress, shader, nir_opt_dead_cf);
> NIR_PASS(progress, shader, nir_opt_cse);
> NIR_PASS(progress, shader, nir_opt_peephole_select, 8, true, true);
> diff --git a/src/compiler/nir/nir.h b/src/compiler/nir/nir.h
> index 7d2062d3691..d7506d6ddd1 100644
> --- a/src/compiler/nir/nir.h
> +++ b/src/compiler/nir/nir.h
> @@ -3474,7 +3474,8 @@ bool nir_opt_gcm(nir_shader *shader, bool value_number);
>
> bool nir_opt_idiv_const(nir_shader *shader, unsigned min_bit_size);
>
> -bool nir_opt_if(nir_shader *shader, bool aggressive_last_continue);
> +bool nir_opt_if(nir_shader *shader, bool aggressive_last_continue,
> + bool skip_alu_of_phi);
Can we have a flag for this instead (e.g. something like
nir_opt_if_skip_alu_of_phi)? I think have a function with a bunch of
bools is less than ideal as you can't see at the calling site what is
for what arg.
>
> bool nir_opt_intrinsics(nir_shader *shader);
>
> diff --git a/src/compiler/nir/nir_opt_if.c b/src/compiler/nir/nir_opt_if.c
> index f674185f1e2..149b3bd1659 100644
> --- a/src/compiler/nir/nir_opt_if.c
> +++ b/src/compiler/nir/nir_opt_if.c
> @@ -1385,7 +1385,8 @@ opt_if_cf_list(nir_builder *b, struct exec_list *cf_list,
> * not do anything to cause the metadata to become invalid.
> */
> static bool
> -opt_if_safe_cf_list(nir_builder *b, struct exec_list *cf_list)
> +opt_if_safe_cf_list(nir_builder *b, struct exec_list *cf_list,
> + bool skip_alu_of_phi)
> {
> bool progress = false;
> foreach_list_typed(nir_cf_node, cf_node, node, cf_list) {
> @@ -1395,16 +1396,17 @@ opt_if_safe_cf_list(nir_builder *b, struct exec_list *cf_list)
>
> case nir_cf_node_if: {
> nir_if *nif = nir_cf_node_as_if(cf_node);
> - progress |= opt_if_safe_cf_list(b, &nif->then_list);
> - progress |= opt_if_safe_cf_list(b, &nif->else_list);
> + progress |= opt_if_safe_cf_list(b, &nif->then_list, skip_alu_of_phi);
> + progress |= opt_if_safe_cf_list(b, &nif->else_list, skip_alu_of_phi);
> progress |= opt_if_evaluate_condition_use(b, nif);
> break;
> }
>
> case nir_cf_node_loop: {
> nir_loop *loop = nir_cf_node_as_loop(cf_node);
> - progress |= opt_if_safe_cf_list(b, &loop->body);
> - progress |= opt_split_alu_of_phi(b, loop);
> + progress |= opt_if_safe_cf_list(b, &loop->body, skip_alu_of_phi);
> + if (!skip_alu_of_phi)
> + progress |= opt_split_alu_of_phi(b, loop);
> break;
> }
>
> @@ -1417,7 +1419,8 @@ opt_if_safe_cf_list(nir_builder *b, struct exec_list *cf_list)
> }
>
> bool
> -nir_opt_if(nir_shader *shader, bool aggressive_last_continue)
> +nir_opt_if(nir_shader *shader, bool aggressive_last_continue,
> + bool skip_alu_of_phi)
> {
> bool progress = false;
>
> @@ -1430,7 +1433,7 @@ nir_opt_if(nir_shader *shader, bool aggressive_last_continue)
>
> nir_metadata_require(function->impl, nir_metadata_block_index |
> nir_metadata_dominance);
> - progress = opt_if_safe_cf_list(&b, &function->impl->body);
> + progress = opt_if_safe_cf_list(&b, &function->impl->body, skip_alu_of_phi);
> nir_metadata_preserve(function->impl, nir_metadata_block_index |
> nir_metadata_dominance);
>
> diff --git a/src/freedreno/ir3/ir3_nir.c b/src/freedreno/ir3/ir3_nir.c
> index 76230e3be50..1bec3c030a9 100644
> --- a/src/freedreno/ir3/ir3_nir.c
> +++ b/src/freedreno/ir3/ir3_nir.c
> @@ -147,7 +147,7 @@ ir3_optimize_loop(nir_shader *s)
> OPT(s, nir_copy_prop);
> OPT(s, nir_opt_dce);
> }
> - progress |= OPT(s, nir_opt_if, false);
> + progress |= OPT(s, nir_opt_if, false, false);
> progress |= OPT(s, nir_opt_remove_phis);
> progress |= OPT(s, nir_opt_undef);
>
> diff --git a/src/gallium/auxiliary/nir/tgsi_to_nir.c b/src/gallium/auxiliary/nir/tgsi_to_nir.c
> index c55e8b84a41..6b40bff1f73 100644
> --- a/src/gallium/auxiliary/nir/tgsi_to_nir.c
> +++ b/src/gallium/auxiliary/nir/tgsi_to_nir.c
> @@ -2066,7 +2066,7 @@ ttn_optimize_nir(nir_shader *nir, bool scalar)
> NIR_PASS(progress, nir, nir_opt_dce);
> }
>
> - NIR_PASS(progress, nir, nir_opt_if, false);
> + NIR_PASS(progress, nir, nir_opt_if, false, false);
> NIR_PASS(progress, nir, nir_opt_dead_cf);
> NIR_PASS(progress, nir, nir_opt_cse);
> NIR_PASS(progress, nir, nir_opt_peephole_select, 8, true, true);
> diff --git a/src/gallium/drivers/freedreno/a2xx/ir2_nir.c b/src/gallium/drivers/freedreno/a2xx/ir2_nir.c
> index ee348ca6a93..3522971e435 100644
> --- a/src/gallium/drivers/freedreno/a2xx/ir2_nir.c
> +++ b/src/gallium/drivers/freedreno/a2xx/ir2_nir.c
> @@ -94,7 +94,7 @@ ir2_optimize_loop(nir_shader *s)
> OPT(s, nir_opt_dce);
> }
> progress |= OPT(s, nir_opt_loop_unroll, nir_var_all);
> - progress |= OPT(s, nir_opt_if, false);
> + progress |= OPT(s, nir_opt_if, false, false);
> progress |= OPT(s, nir_opt_remove_phis);
> progress |= OPT(s, nir_opt_undef);
>
> diff --git a/src/gallium/drivers/radeonsi/si_shader_nir.c b/src/gallium/drivers/radeonsi/si_shader_nir.c
> index 5a925f19e09..7f1fe4ba2e9 100644
> --- a/src/gallium/drivers/radeonsi/si_shader_nir.c
> +++ b/src/gallium/drivers/radeonsi/si_shader_nir.c
> @@ -879,7 +879,7 @@ si_lower_nir(struct si_shader_selector* sel)
> NIR_PASS(progress, sel->nir, nir_copy_prop);
> NIR_PASS(progress, sel->nir, nir_opt_dce);
> }
> - NIR_PASS(progress, sel->nir, nir_opt_if, true);
> + NIR_PASS(progress, sel->nir, nir_opt_if, true, false);
> NIR_PASS(progress, sel->nir, nir_opt_dead_cf);
> NIR_PASS(progress, sel->nir, nir_opt_cse);
> NIR_PASS(progress, sel->nir, nir_opt_peephole_select, 8, true, true);
> diff --git a/src/intel/compiler/brw_nir.c b/src/intel/compiler/brw_nir.c
> index e0a393fc298..ba911049ce3 100644
> --- a/src/intel/compiler/brw_nir.c
> +++ b/src/intel/compiler/brw_nir.c
> @@ -607,7 +607,7 @@ brw_nir_optimize(nir_shader *nir, const struct brw_compiler *compiler,
> OPT(nir_copy_prop);
> OPT(nir_opt_dce);
> }
> - OPT(nir_opt_if, false);
> + OPT(nir_opt_if, false, false);
> if (nir->options->max_unroll_iterations != 0) {
> OPT(nir_opt_loop_unroll, indirect_mask);
> }
> diff --git a/src/mesa/state_tracker/st_glsl_to_nir.cpp b/src/mesa/state_tracker/st_glsl_to_nir.cpp
> index 97b2831b880..3f1f78e875b 100644
> --- a/src/mesa/state_tracker/st_glsl_to_nir.cpp
> +++ b/src/mesa/state_tracker/st_glsl_to_nir.cpp
> @@ -324,7 +324,7 @@ st_nir_opts(nir_shader *nir, bool scalar)
> NIR_PASS(progress, nir, nir_copy_prop);
> NIR_PASS(progress, nir, nir_opt_dce);
> }
> - NIR_PASS(progress, nir, nir_opt_if, false);
> + NIR_PASS(progress, nir, nir_opt_if, false, false);
> NIR_PASS(progress, nir, nir_opt_dead_cf);
> NIR_PASS(progress, nir, nir_opt_cse);
> NIR_PASS(progress, nir, nir_opt_peephole_select, 8, true, true);
> --
> 2.21.0
>
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