panfrost: drop pan_nir_lower_64bit_intrin

It's dead code now.

Signed-off-by: Karol Herbst <git@karolherbst.de>
Reviewed-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/24939>

src/panfrost/compiler/bifrost_compile.c

@@ -4705,7 +4705,6 @@ bifrost_preprocess_nir(nir_shader *nir, unsigned gpu_id)
    NIR_PASS_V(nir, pan_lower_sample_pos);
    NIR_PASS_V(nir, nir_lower_bit_size, bi_lower_bit_size, NULL);
    NIR_PASS_V(nir, nir_lower_64bit_phis);
-   NIR_PASS_V(nir, pan_nir_lower_64bit_intrin);
    NIR_PASS_V(nir, pan_lower_helper_invocation);
    NIR_PASS_V(nir, nir_lower_int64);
 

src/panfrost/midgard/midgard_compile.c

@@ -362,7 +362,6 @@ midgard_preprocess_nir(nir_shader *nir, unsigned gpu_id)
    NIR_PASS_V(nir, nir_lower_ssbo);
    NIR_PASS_V(nir, pan_nir_lower_zs_store);
 
-   NIR_PASS_V(nir, pan_nir_lower_64bit_intrin);
    NIR_PASS_V(nir, nir_lower_frexp);
    NIR_PASS_V(nir, midgard_nir_lower_global_load);
 

src/panfrost/util/meson.build

@@ -32,7 +32,6 @@ libpanfrost_util_files = files(
   'pan_lower_store_component.c',
   'pan_lower_writeout.c',
   'pan_lower_xfb.c',
-  'pan_lower_64bit_intrin.c',
 )
 
 libpanfrost_util = static_library(

src/panfrost/util/pan_lower_64bit_intrin.c

@@ -1,69 +0,0 @@
-/*
- * Copyright (C) 2020 Icecream95 <ixn@disroot.org>
- *
- * 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 "compiler/nir/nir_builder.h"
-#include "pan_ir.h"
-
-/* OpenCL uses 64-bit types for some intrinsic functions, including
- * global_invocation_id(). This could be worked around during conversion to
- * MIR, except that global_invocation_id is a vec3, and the 128-bit registers
- * on Midgard can only hold a 64-bit vec2.
- * Rather than attempting to add hacky 64-bit vec3 support, convert these
- * intrinsics to 32-bit and add a cast back to 64-bit, and rely on NIR not
- * vectorizing back to vec3.
- */
-
-static bool
-nir_lower_64bit_intrin_instr(nir_builder *b, nir_intrinsic_instr *intr,
-                             void *data)
-{
-   switch (intr->intrinsic) {
-   case nir_intrinsic_load_global_invocation_id:
-   case nir_intrinsic_load_global_invocation_id_zero_base:
-      break;
-
-   default:
-      return false;
-   }
-
-   if (intr->def.bit_size != 64)
-      return false;
-
-   b->cursor = nir_after_instr(&intr->instr);
-
-   intr->def.bit_size = 32;
-
-   nir_def *conv = nir_u2u64(b, &intr->def);
-
-   nir_def_rewrite_uses_after(&intr->def, conv, conv->parent_instr);
-
-   return true;
-}
-
-bool
-pan_nir_lower_64bit_intrin(nir_shader *shader)
-{
-   return nir_shader_intrinsics_pass(
-      shader, nir_lower_64bit_intrin_instr,
-      nir_metadata_block_index | nir_metadata_dominance, NULL);
-}