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      1 /*
      2  * Copyright  2015 Intel Corporation
      3  *
      4  * Permission is hereby granted, free of charge, to any person obtaining a
      5  * copy of this software and associated documentation files (the "Software"),
      6  * to deal in the Software without restriction, including without limitation
      7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
      8  * and/or sell copies of the Software, and to permit persons to whom the
      9  * Software is furnished to do so, subject to the following conditions:
     10  *
     11  * The above copyright notice and this permission notice (including the next
     12  * paragraph) shall be included in all copies or substantial portions of the
     13  * Software.
     14  *
     15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
     18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
     19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
     20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
     21  * IN THE SOFTWARE.
     22  */
     23 
     24 #include "anv_nir.h"
     25 
     26 void
     27 anv_nir_lower_push_constants(nir_shader *shader)
     28 {
     29    nir_foreach_function(function, shader) {
     30       if (!function->impl)
     31          continue;
     32 
     33       nir_foreach_block(block, function->impl) {
     34          nir_foreach_instr(instr, block) {
     35             if (instr->type != nir_instr_type_intrinsic)
     36                continue;
     37 
     38             nir_intrinsic_instr *intrin = nir_instr_as_intrinsic(instr);
     39 
     40             /* TODO: Handle indirect push constants */
     41             if (intrin->intrinsic != nir_intrinsic_load_push_constant)
     42                continue;
     43 
     44             assert(intrin->const_index[0] % 4 == 0);
     45 
     46             /* We just turn them into uniform loads */
     47             intrin->intrinsic = nir_intrinsic_load_uniform;
     48          }
     49       }
     50    }
     51 }
     52