Mesa (master): nir: Remove the old nir_opt_shrink_load.

[GitLab Mirror]

Module: Mesa
Branch: master
Commit: ee2f21b10dc786c83ff5dad716502429f6b26fb9
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=ee2f21b10dc786c83ff5dad716502429f6b26fb9

Author: Eric Anholt <eric at anholt.net>
Date:   Wed Jul 22 22:10:39 2020 -0700

nir: Remove the old nir_opt_shrink_load.

The old pass only handled intrinsic load_constant, while the new
nir_opt_shrink_vectors handles ALU ops, nir load_consts, along with all
the load intrinsics.

Reviewed-by: Rhys Perry <pendingchaos02 at gmail.com>
Reviewed-by: Kenneth Graunke <kenneth at whitecape.org>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6050>

---

 src/compiler/Makefile.sources          |  1 -
 src/compiler/nir/meson.build           |  1 -
 src/compiler/nir/nir.h                 |  1 -
 src/compiler/nir/nir_opt_shrink_load.c | 67 ----------------------------------
 4 files changed, 70 deletions(-)

diff --git a/src/compiler/Makefile.sources b/src/compiler/Makefile.sources
index b15907d1aee..87bdbf23803 100644
--- a/src/compiler/Makefile.sources
+++ b/src/compiler/Makefile.sources
@@ -326,7 +326,6 @@ NIR_FILES = \
 	nir/nir_opt_peephole_select.c \
 	nir/nir_opt_rematerialize_compares.c \
 	nir/nir_opt_remove_phis.c \
-	nir/nir_opt_shrink_load.c \
 	nir/nir_opt_shrink_vectors.c \
 	nir/nir_opt_sink.c \
 	nir/nir_opt_trivial_continues.c \
diff --git a/src/compiler/nir/meson.build b/src/compiler/nir/meson.build
index c326dd5ec56..f74a591926a 100644
--- a/src/compiler/nir/meson.build
+++ b/src/compiler/nir/meson.build
@@ -207,7 +207,6 @@ files_libnir = files(
   'nir_opt_peephole_select.c',
   'nir_opt_rematerialize_compares.c',
   'nir_opt_remove_phis.c',
-  'nir_opt_shrink_load.c',
   'nir_opt_shrink_vectors.c',
   'nir_opt_sink.c',
   'nir_opt_trivial_continues.c',
diff --git a/src/compiler/nir/nir.h b/src/compiler/nir/nir.h
index a3b2c84dcab..edae673bfa6 100644
--- a/src/compiler/nir/nir.h
+++ b/src/compiler/nir/nir.h
@@ -4618,7 +4618,6 @@ bool nir_opt_rematerialize_compares(nir_shader *shader);
 bool nir_opt_remove_phis(nir_shader *shader);
 bool nir_opt_remove_phis_block(nir_block *block);
 
-bool nir_opt_shrink_load(nir_shader *shader);
 bool nir_opt_shrink_vectors(nir_shader *shader);
 
 bool nir_opt_trivial_continues(nir_shader *shader);
diff --git a/src/compiler/nir/nir_opt_shrink_load.c b/src/compiler/nir/nir_opt_shrink_load.c
deleted file mode 100644
index f97b7f9b67f..00000000000
--- a/src/compiler/nir/nir_opt_shrink_load.c
+++ /dev/null
@@ -1,67 +0,0 @@
-/*
- * Copyright © 2018 Valve Corporation
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice (including the next
- * paragraph) shall be included in all copies or substantial portions of the
- * Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
- * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
- * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
- * IN THE SOFTWARE.
- */
-
-#include "nir.h"
-
-static bool
-opt_shrink_load(nir_intrinsic_instr *instr)
-{
-   bool progress = false;
-
-   if (instr->intrinsic == nir_intrinsic_load_push_constant) {
-      unsigned mask = nir_ssa_def_components_read(&instr->dest.ssa);
-
-      if (instr->num_components > util_last_bit(mask)) {
-         instr->num_components = util_last_bit(mask);
-         instr->dest.ssa.num_components = instr->num_components;
-         progress = true;
-      }
-   }
-
-   return progress;
-}
-
-bool
-nir_opt_shrink_load(nir_shader *shader)
-{
-   bool progress = false;
-
-   nir_foreach_function(function, shader) {
-      if (!function->impl)
-         continue;
-
-      nir_foreach_block(block, function->impl) {
-         nir_foreach_instr(instr, block) {
-            if (instr->type != nir_instr_type_intrinsic)
-               continue;
-
-            progress |= opt_shrink_load(nir_instr_as_intrinsic(instr));
-         }
-      }
-
-      nir_metadata_preserve(function->impl, nir_metadata_block_index |
-                                            nir_metadata_dominance);
-   }
-
-   return progress;
-}