/* * 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 #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, 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, 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(); } bool ret = v->opt_copy_propagation(); if (print) { fprintf(stderr, "\n= After =\n"); v->cfg->dump(); } 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 }, { BRW_CONDITIONAL_NONE, 0.5f, false }, { BRW_CONDITIONAL_Z , 0.5f, false }, { BRW_CONDITIONAL_NZ , 0.5f, false }, { BRW_CONDITIONAL_G , 0.5f, false }, { BRW_CONDITIONAL_LE , 0.5f, false }, { BRW_CONDITIONAL_R , 0.5f, false }, { BRW_CONDITIONAL_O , 0.5f, false }, { BRW_CONDITIONAL_U , 0.5f, 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; } }