glsl: Combine many instruction lowering passes into one.

This should save on the overhead of tree-walking and provide a
convenient place to add more instruction lowering in the future.

Signed-off-by: Ian Romanick <[email protected]>

1 files changed, 0 insertions, 90 deletions

diff --git a/src/glsl/lower_mod_to_fract.cpp b/src/glsl/lower_mod_to_fract.cpp
deleted file mode 100644
index ff907ae97cc..00000000000
--- a/src/glsl/lower_mod_to_fract.cpp
+++ /dev/null
@@ -1,90 +0,0 @@
-/*
- * Copyright © 2010 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_mod_to_fract.cpp
- *
- * Breaks an ir_unop_mod expression down to (op1 * fract(op0 / op1))
- *
- * Many GPUs don't have a MOD instruction (945 and 965 included), and
- * if we have to break it down like this anyway, it gives an
- * opportunity to do things like constant fold the (1.0 / op1) easily.
- */
-
-#include "ir.h"
-
-class ir_mod_to_fract_visitor : public ir_hierarchical_visitor {
-public:
-   ir_mod_to_fract_visitor()
-   {
-      this->made_progress = false;
-   }
-
-   ir_visitor_status visit_leave(ir_expression *);
-
-   bool made_progress;
-};
-
-bool
-do_mod_to_fract(exec_list *instructions)
-{
-   ir_mod_to_fract_visitor v;
-
-   visit_list_elements(&v, instructions);
-   return v.made_progress;
-}
-
-ir_visitor_status
-ir_mod_to_fract_visitor::visit_leave(ir_expression *ir)
-{
-   if (ir->operation != ir_binop_mod)
-      return visit_continue;
-
-   ir_variable *temp = new(ir) ir_variable(ir->operands[1]->type, "mod_b",
-					   ir_var_temporary);
-   this->base_ir->insert_before(temp);
-
-   ir_assignment *assign;
-   ir_rvalue *expr;
-
-   assign = new(ir) ir_assignment(new(ir) ir_dereference_variable(temp),
-				  ir->operands[1], NULL);
-   this->base_ir->insert_before(assign);
-
-   expr = new(ir) ir_expression(ir_binop_div,
-				ir->operands[0]->type,
-				ir->operands[0],
-				new(ir) ir_dereference_variable(temp));
-
-   expr = new(ir) ir_expression(ir_unop_fract,
-				ir->operands[0]->type,
-				expr,
-				NULL);
-
-   ir->operation = ir_binop_mul;
-   ir->operands[0] = new(ir) ir_dereference_variable(temp);
-   ir->operands[1] = expr;
-   this->made_progress = true;
-
-   return visit_continue;
-}