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/*
* Copyright © 2016 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 <gtest/gtest.h>
#include "brw_fs.h"
#include "brw_cfg.h"
#include "program/program.h"
using namespace brw;
class copy_propagation_test : public ::testing::Test {
virtual void SetUp();
public:
struct brw_compiler *compiler;
struct gen_device_info *devinfo;
struct gl_context *ctx;
struct brw_wm_prog_data *prog_data;
struct gl_shader_program *shader_prog;
fs_visitor *v;
};
class copy_propagation_fs_visitor : public fs_visitor
{
public:
copy_propagation_fs_visitor(struct brw_compiler *compiler,
struct brw_wm_prog_data *prog_data,
nir_shader *shader)
: fs_visitor(compiler, NULL, NULL, NULL,
&prog_data->base, (struct gl_program *) NULL,
shader, 8, -1) {}
};
void copy_propagation_test::SetUp()
{
ctx = (struct gl_context *)calloc(1, sizeof(*ctx));
compiler = (struct brw_compiler *)calloc(1, sizeof(*compiler));
devinfo = (struct gen_device_info *)calloc(1, sizeof(*devinfo));
compiler->devinfo = devinfo;
prog_data = ralloc(NULL, struct brw_wm_prog_data);
nir_shader *shader =
nir_shader_create(NULL, MESA_SHADER_FRAGMENT, NULL);
v = new copy_propagation_fs_visitor(compiler, prog_data, shader);
devinfo->gen = 4;
}
static fs_inst *
instruction(bblock_t *block, int num)
{
fs_inst *inst = (fs_inst *)block->start();
for (int i = 0; i < num; i++) {
inst = (fs_inst *)inst->next;
}
return inst;
}
static bool
copy_propagation(fs_visitor *v)
{
const bool print = getenv("TEST_DEBUG");
if (print) {
fprintf(stderr, "= Before =\n");
v->cfg->dump(v);
}
bool ret = v->opt_copy_propagation();
if (print) {
fprintf(stderr, "\n= After =\n");
v->cfg->dump(v);
}
return ret;
}
TEST_F(copy_propagation_test, basic)
{
const fs_builder &bld = v->bld;
fs_reg vgrf0 = v->vgrf(glsl_type::float_type);
fs_reg vgrf1 = v->vgrf(glsl_type::float_type);
fs_reg vgrf2 = v->vgrf(glsl_type::float_type);
fs_reg vgrf3 = v->vgrf(glsl_type::float_type);
bld.MOV(vgrf0, vgrf2);
bld.ADD(vgrf1, vgrf0, vgrf3);
/* = Before =
*
* 0: mov(8) vgrf0 vgrf2
* 1: add(8) vgrf1 vgrf0 vgrf3
*
* = After =
* 0: mov(8) vgrf0 vgrf2
* 1: add(8) vgrf1 vgrf2 vgrf3
*/
v->calculate_cfg();
bblock_t *block0 = v->cfg->blocks[0];
EXPECT_EQ(0, block0->start_ip);
EXPECT_EQ(1, block0->end_ip);
EXPECT_TRUE(copy_propagation(v));
EXPECT_EQ(0, block0->start_ip);
EXPECT_EQ(1, block0->end_ip);
fs_inst *mov = instruction(block0, 0);
EXPECT_EQ(BRW_OPCODE_MOV, mov->opcode);
EXPECT_TRUE(mov->dst.equals(vgrf0));
EXPECT_TRUE(mov->src[0].equals(vgrf2));
fs_inst *add = instruction(block0, 1);
EXPECT_EQ(BRW_OPCODE_ADD, add->opcode);
EXPECT_TRUE(add->dst.equals(vgrf1));
EXPECT_TRUE(add->src[0].equals(vgrf2));
EXPECT_TRUE(add->src[1].equals(vgrf3));
}
TEST_F(copy_propagation_test, maxmax_sat_imm)
{
const fs_builder &bld = v->bld;
fs_reg vgrf0 = v->vgrf(glsl_type::float_type);
fs_reg vgrf1 = v->vgrf(glsl_type::float_type);
fs_reg vgrf2 = v->vgrf(glsl_type::float_type);
static const struct {
enum brw_conditional_mod conditional_mod;
float immediate;
bool expected_result;
} test[] = {
/* conditional mod, imm, expected_result */
{ BRW_CONDITIONAL_GE , 0.1f, true },
{ BRW_CONDITIONAL_L , 0.1f, true },
{ BRW_CONDITIONAL_GE , 0.5f, true },
{ BRW_CONDITIONAL_L , 0.5f, true },
{ BRW_CONDITIONAL_GE , 0.9f, true },
{ BRW_CONDITIONAL_L , 0.9f, true },
{ BRW_CONDITIONAL_GE , -1.5f, false },
{ BRW_CONDITIONAL_L , -1.5f, false },
{ BRW_CONDITIONAL_GE , 1.5f, false },
{ BRW_CONDITIONAL_L , 1.5f, false },
};
for (unsigned i = 0; i < sizeof(test) / sizeof(test[0]); i++) {
fs_inst *mov = set_saturate(true, bld.MOV(vgrf0, vgrf1));
fs_inst *sel = set_condmod(test[i].conditional_mod,
bld.SEL(vgrf2, vgrf0,
brw_imm_f(test[i].immediate)));
v->calculate_cfg();
bblock_t *block0 = v->cfg->blocks[0];
EXPECT_EQ(0, block0->start_ip);
EXPECT_EQ(1, block0->end_ip);
EXPECT_EQ(test[i].expected_result, copy_propagation(v));
EXPECT_EQ(0, block0->start_ip);
EXPECT_EQ(1, block0->end_ip);
EXPECT_EQ(BRW_OPCODE_MOV, mov->opcode);
EXPECT_TRUE(mov->saturate);
EXPECT_TRUE(mov->dst.equals(vgrf0));
EXPECT_TRUE(mov->src[0].equals(vgrf1));
EXPECT_EQ(BRW_OPCODE_SEL, sel->opcode);
EXPECT_EQ(test[i].conditional_mod, sel->conditional_mod);
EXPECT_EQ(test[i].expected_result, sel->saturate);
EXPECT_TRUE(sel->dst.equals(vgrf2));
if (test[i].expected_result) {
EXPECT_TRUE(sel->src[0].equals(vgrf1));
} else {
EXPECT_TRUE(sel->src[0].equals(vgrf0));
}
EXPECT_TRUE(sel->src[1].equals(brw_imm_f(test[i].immediate)));
delete v->cfg;
v->cfg = NULL;
}
}
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