mirror of https://gitlab.freedesktop.org/mesa/mesa
199 lines
4.6 KiB
C++
199 lines
4.6 KiB
C++
/*
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* Copyright © 2013 Intel Corporation
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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#include "ir.h"
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/**
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* Helper for checking equality when one instruction might be NULL, since you
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* can't access a's vtable in that case.
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*/
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static bool
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possibly_null_equals(ir_instruction *a, ir_instruction *b)
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{
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if (!a || !b)
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return !a && !b;
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return a->equals(b);
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}
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/**
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* The base equality function: Return not equal for anything we don't know
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* about.
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*/
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bool
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ir_instruction::equals(ir_instruction *ir)
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{
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return false;
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}
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bool
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ir_constant::equals(ir_instruction *ir)
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{
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const ir_constant *other = ir->as_constant();
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if (!other)
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return false;
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if (type != other->type)
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return false;
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for (unsigned i = 0; i < type->components(); i++) {
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if (value.u[i] != other->value.u[i])
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return false;
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}
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return true;
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}
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bool
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ir_dereference_variable::equals(ir_instruction *ir)
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{
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const ir_dereference_variable *other = ir->as_dereference_variable();
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if (!other)
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return false;
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return var == other->var;
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}
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bool
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ir_dereference_array::equals(ir_instruction *ir)
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{
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const ir_dereference_array *other = ir->as_dereference_array();
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if (!other)
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return false;
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if (type != other->type)
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return false;
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if (!array->equals(other->array))
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return false;
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if (!array_index->equals(other->array_index))
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return false;
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return true;
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}
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bool
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ir_swizzle::equals(ir_instruction *ir)
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{
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const ir_swizzle *other = ir->as_swizzle();
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if (!other)
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return false;
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if (type != other->type)
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return false;
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if (mask.x != other->mask.x ||
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mask.y != other->mask.y ||
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mask.z != other->mask.z ||
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mask.w != other->mask.w) {
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return false;
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}
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return val->equals(other->val);
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}
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bool
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ir_texture::equals(ir_instruction *ir)
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{
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const ir_texture *other = ir->as_texture();
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if (!other)
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return false;
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if (type != other->type)
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return false;
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if (op != other->op)
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return false;
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if (!possibly_null_equals(coordinate, other->coordinate))
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return false;
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if (!possibly_null_equals(projector, other->projector))
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return false;
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if (!possibly_null_equals(shadow_comparitor, other->shadow_comparitor))
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return false;
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if (!possibly_null_equals(offset, other->offset))
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return false;
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if (!sampler->equals(other->sampler))
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return false;
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switch (op) {
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case ir_tex:
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case ir_lod:
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case ir_query_levels:
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break;
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case ir_txb:
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if (!lod_info.bias->equals(other->lod_info.bias))
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return false;
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break;
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case ir_txl:
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case ir_txf:
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case ir_txs:
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if (!lod_info.lod->equals(other->lod_info.lod))
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return false;
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break;
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case ir_txd:
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if (!lod_info.grad.dPdx->equals(other->lod_info.grad.dPdx) ||
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!lod_info.grad.dPdy->equals(other->lod_info.grad.dPdy))
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return false;
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break;
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case ir_txf_ms:
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if (!lod_info.sample_index->equals(other->lod_info.sample_index))
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return false;
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break;
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case ir_tg4:
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if (!lod_info.component->equals(other->lod_info.component))
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return false;
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break;
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default:
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assert(!"Unrecognized texture op");
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}
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return true;
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}
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bool
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ir_expression::equals(ir_instruction *ir)
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{
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const ir_expression *other = ir->as_expression();
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if (!other)
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return false;
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if (type != other->type)
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return false;
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if (operation != other->operation)
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return false;
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for (unsigned i = 0; i < get_num_operands(); i++) {
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if (!operands[i]->equals(other->operands[i]))
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return false;
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}
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return true;
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}
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