glsl: move to compiler/

[mesa.git] / src / glsl / lower_const_arrays_to_uniforms.cpp

diff --git a/src/glsl/lower_const_arrays_to_uniforms.cpp b/src/glsl/lower_const_arrays_to_uniforms.cpp
deleted file mode 100644 (file)
index 2d024d4..0000000
--- a/src/glsl/lower_const_arrays_to_uniforms.cpp
+++ /dev/null
@@ -1,109 +0,0 @@
-/*
- * Copyright © 2014 Intel 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.
- */
-
-/**
- * \file lower_const_arrays_to_uniforms.cpp
- *
- * Lower constant arrays to uniform arrays.
- *
- * Some driver backends (such as i965 and nouveau) don't handle constant arrays
- * gracefully, instead treating them as ordinary writable temporary arrays.
- * Since arrays can be large, this often means spilling them to scratch memory,
- * which usually involves a large number of instructions.
- *
- * This must be called prior to link_set_uniform_initializers(); we need the
- * linker to process our new uniform's constant initializer.
- *
- * This should be called after optimizations, since those can result in
- * splitting and removing arrays that are indexed by constant expressions.
- */
-#include "ir.h"
-#include "ir_visitor.h"
-#include "ir_rvalue_visitor.h"
-#include "compiler/glsl_types.h"
-
-namespace {
-class lower_const_array_visitor : public ir_rvalue_visitor {
-public:
-   lower_const_array_visitor(exec_list *insts)
-   {
-      instructions = insts;
-      progress = false;
-   }
-
-   bool run()
-   {
-      visit_list_elements(this, instructions);
-      return progress;
-   }
-
-   void handle_rvalue(ir_rvalue **rvalue);
-
-private:
-   exec_list *instructions;
-   bool progress;
-};
-
-void
-lower_const_array_visitor::handle_rvalue(ir_rvalue **rvalue)
-{
-   if (!*rvalue)
-      return;
-
-   ir_dereference_array *dra = (*rvalue)->as_dereference_array();
-   if (!dra)
-      return;
-
-   ir_constant *con = dra->array->as_constant();
-   if (!con || !con->type->is_array())
-      return;
-
-   void *mem_ctx = ralloc_parent(con);
-
-   char *uniform_name = ralloc_asprintf(mem_ctx, "constarray__%p", dra);
-
-   ir_variable *uni =
-      new(mem_ctx) ir_variable(con->type, uniform_name, ir_var_uniform);
-   uni->constant_initializer = con;
-   uni->constant_value = con;
-   uni->data.has_initializer = true;
-   uni->data.how_declared = ir_var_hidden;
-   uni->data.read_only = true;
-   /* Assume the whole thing is accessed. */
-   uni->data.max_array_access = uni->type->length - 1;
-   instructions->push_head(uni);
-
-   ir_dereference_variable *varref = new(mem_ctx) ir_dereference_variable(uni);
-   *rvalue = new(mem_ctx) ir_dereference_array(varref, dra->array_index);
-
-   progress = true;
-}
-
-} /* anonymous namespace */
-
-bool
-lower_const_arrays_to_uniforms(exec_list *instructions)
-{
-   lower_const_array_visitor v(instructions);
-   return v.run();
-}