/*
* Copyright © 2013 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.
*/
#include "ir.h"
/**
* Helper for checking equality when one instruction might be NULL, since you
* can't access a's vtable in that case.
*/
static bool
possibly_null_equals(const ir_instruction *a, const ir_instruction *b,
enum ir_node_type ignore)
{
if (!a || !b)
return !a && !b;
return a->equals(b, ignore);
}
/**
* The base equality function: Return not equal for anything we don't know
* about.
*/
bool
ir_instruction::equals(const ir_instruction *, enum ir_node_type) const
{
return false;
}
bool
ir_constant::equals(const ir_instruction *ir, enum ir_node_type) const
{
const ir_constant *other = ir->as_constant();
if (!other)
return false;
if (type != other->type)
return false;
for (unsigned i = 0; i < type->components(); i++) {
if (value.u[i] != other->value.u[i])
return false;
}
return true;
}
bool
ir_dereference_variable::equals(const ir_instruction *ir,
enum ir_node_type) const
{
const ir_dereference_variable *other = ir->as_dereference_variable();
if (!other)
return false;
return var == other->var;
}
bool
ir_dereference_array::equals(const ir_instruction *ir,
enum ir_node_type ignore) const
{
const ir_dereference_array *other = ir->as_dereference_array();
if (!other)
return false;
if (type != other->type)
return false;
if (!array->equals(other->array, ignore))
return false;
if (!array_index->equals(other->array_index, ignore))
return false;
return true;
}
bool
ir_swizzle::equals(const ir_instruction *ir,
enum ir_node_type ignore) const
{
const ir_swizzle *other = ir->as_swizzle();
if (!other)
return false;
if (type != other->type)
return false;
if (ignore != ir_type_swizzle) {
if (mask.x != other->mask.x ||
mask.y != other->mask.y ||
mask.z != other->mask.z ||
mask.w != other->mask.w) {
return false;
}
}
return val->equals(other->val, ignore);
}
bool
ir_texture::equals(const ir_instruction *ir, enum ir_node_type ignore) const
{
const ir_texture *other = ir->as_texture();
if (!other)
return false;
if (type != other->type)
return false;
if (op != other->op)
return false;
if (!possibly_null_equals(coordinate, other->coordinate, ignore))
return false;
if (!possibly_null_equals(projector, other->projector, ignore))
return false;
if (!possibly_null_equals(shadow_comparitor, other->shadow_comparitor, ignore))
return false;
if (!possibly_null_equals(offset, other->offset, ignore))
return false;
if (!sampler->equals(other->sampler, ignore))
return false;
switch (op) {
case ir_tex:
case ir_lod:
case ir_query_levels:
break;
case ir_txb:
if (!lod_info.bias->equals(other->lod_info.bias, ignore))
return false;
break;
case ir_txl:
case ir_txf:
case ir_txs:
if (!lod_info.lod->equals(other->lod_info.lod, ignore))
return false;
break;
case ir_txd:
if (!lod_info.grad.dPdx->equals(other->lod_info.grad.dPdx, ignore) ||
!lod_info.grad.dPdy->equals(other->lod_info.grad.dPdy, ignore))
return false;
break;
case ir_txf_ms:
if (!lod_info.sample_index->equals(other->lod_info.sample_index, ignore))
return false;
break;
case ir_tg4:
if (!lod_info.component->equals(other->lod_info.component, ignore))
return false;
break;
default:
assert(!"Unrecognized texture op");
}
return true;
}
bool
ir_expression::equals(const ir_instruction *ir, enum ir_node_type ignore) const
{
const ir_expression *other = ir->as_expression();
if (!other)
return false;
if (type != other->type)
return false;
if (operation != other->operation)
return false;
for (unsigned i = 0; i < get_num_operands(); i++) {
if (!operands[i]->equals(other->operands[i], ignore))
return false;
}
return true;
}