426ca34b7a
We have ir->print() to do the old declaration of a visitor and having the
IR accept the visitor (yuck!). And now you can call _mesa_print_ir()
safely anywhere that you know what an ir_instruction is.
A couple of missing printf("\n")s are added in error paths -- when an
expression is handed to the visitor, it doesn't print '\n' (since it might
be a step in printing a whole expression tree).
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Paul Berry <stereotype441@gmail.com>
84 lines
2.3 KiB
C++
84 lines
2.3 KiB
C++
/*
|
|
* 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 opt_noop_swizzle.cpp
|
|
*
|
|
* If a swizzle doesn't change the order or count of components, then
|
|
* remove the swizzle so that other optimization passes see the value
|
|
* behind it.
|
|
*/
|
|
|
|
#include "ir.h"
|
|
#include "ir_visitor.h"
|
|
#include "ir_rvalue_visitor.h"
|
|
#include "glsl_types.h"
|
|
|
|
namespace {
|
|
|
|
class ir_noop_swizzle_visitor : public ir_rvalue_visitor {
|
|
public:
|
|
ir_noop_swizzle_visitor()
|
|
{
|
|
this->progress = false;
|
|
}
|
|
|
|
void handle_rvalue(ir_rvalue **rvalue);
|
|
bool progress;
|
|
};
|
|
|
|
} /* unnamed namespace */
|
|
|
|
void
|
|
ir_noop_swizzle_visitor::handle_rvalue(ir_rvalue **rvalue)
|
|
{
|
|
if (!*rvalue)
|
|
return;
|
|
|
|
ir_swizzle *swiz = (*rvalue)->as_swizzle();
|
|
if (!swiz || swiz->type != swiz->val->type)
|
|
return;
|
|
|
|
int elems = swiz->val->type->vector_elements;
|
|
if (swiz->mask.x != 0)
|
|
return;
|
|
if (elems >= 2 && swiz->mask.y != 1)
|
|
return;
|
|
if (elems >= 3 && swiz->mask.z != 2)
|
|
return;
|
|
if (elems >= 4 && swiz->mask.w != 3)
|
|
return;
|
|
|
|
this->progress = true;
|
|
*rvalue = swiz->val;
|
|
}
|
|
|
|
bool
|
|
do_noop_swizzle(exec_list *instructions)
|
|
{
|
|
ir_noop_swizzle_visitor v;
|
|
visit_list_elements(&v, instructions);
|
|
|
|
return v.progress;
|
|
}
|