1 /* 2 * Copyright 2014 Intel Corporation 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining a 5 * copy of this software and associated documentation files (the "Software"), 6 * to deal in the Software without restriction, including without limitation 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 8 * and/or sell copies of the Software, and to permit persons to whom the 9 * Software is furnished to do so, subject to the following conditions: 10 * 11 * The above copyright notice and this permission notice (including the next 12 * paragraph) shall be included in all copies or substantial portions of the 13 * Software. 14 * 15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS 21 * IN THE SOFTWARE. 22 */ 23 24 #include <gtest/gtest.h> 25 #include "brw_vec4.h" 26 #include "brw_vs.h" 27 #include "program/program.h" 28 29 using namespace brw; 30 31 int ret = 0; 32 33 class copy_propagation_test : public ::testing::Test { 34 virtual void SetUp(); 35 36 public: 37 struct brw_compiler *compiler; 38 struct gen_device_info *devinfo; 39 struct gl_context *ctx; 40 struct gl_shader_program *shader_prog; 41 struct brw_vue_prog_data *prog_data; 42 vec4_visitor *v; 43 }; 44 45 class copy_propagation_vec4_visitor : public vec4_visitor 46 { 47 public: 48 copy_propagation_vec4_visitor(struct brw_compiler *compiler, 49 nir_shader *shader, 50 struct brw_vue_prog_data *prog_data) 51 : vec4_visitor(compiler, NULL, NULL, prog_data, shader, NULL, 52 false /* no_spills */, -1) 53 { 54 prog_data->dispatch_mode = DISPATCH_MODE_4X2_DUAL_OBJECT; 55 } 56 57 protected: 58 virtual dst_reg *make_reg_for_system_value(int location) 59 { 60 unreachable("Not reached"); 61 } 62 63 virtual void setup_payload() 64 { 65 unreachable("Not reached"); 66 } 67 68 virtual void emit_prolog() 69 { 70 unreachable("Not reached"); 71 } 72 73 virtual void emit_thread_end() 74 { 75 unreachable("Not reached"); 76 } 77 78 virtual void emit_urb_write_header(int mrf) 79 { 80 unreachable("Not reached"); 81 } 82 83 virtual vec4_instruction *emit_urb_write_opcode(bool complete) 84 { 85 unreachable("Not reached"); 86 } 87 }; 88 89 90 void copy_propagation_test::SetUp() 91 { 92 ctx = (struct gl_context *)calloc(1, sizeof(*ctx)); 93 compiler = (struct brw_compiler *)calloc(1, sizeof(*compiler)); 94 devinfo = (struct gen_device_info *)calloc(1, sizeof(*devinfo)); 95 prog_data = (struct brw_vue_prog_data *)calloc(1, sizeof(*prog_data)); 96 compiler->devinfo = devinfo; 97 98 nir_shader *shader = 99 nir_shader_create(NULL, MESA_SHADER_VERTEX, NULL, NULL); 100 101 v = new copy_propagation_vec4_visitor(compiler, shader, prog_data); 102 103 devinfo->gen = 4; 104 } 105 106 static void 107 copy_propagation(vec4_visitor *v) 108 { 109 bool print = false; 110 111 if (print) { 112 fprintf(stderr, "instructions before:\n"); 113 v->dump_instructions(); 114 } 115 116 v->calculate_cfg(); 117 v->opt_copy_propagation(); 118 119 if (print) { 120 fprintf(stderr, "instructions after:\n"); 121 v->dump_instructions(); 122 } 123 } 124 125 TEST_F(copy_propagation_test, test_swizzle_swizzle) 126 { 127 dst_reg a = dst_reg(v, glsl_type::vec4_type); 128 dst_reg b = dst_reg(v, glsl_type::vec4_type); 129 dst_reg c = dst_reg(v, glsl_type::vec4_type); 130 131 v->emit(v->ADD(a, src_reg(a), src_reg(a))); 132 133 v->emit(v->MOV(b, swizzle(src_reg(a), BRW_SWIZZLE4(SWIZZLE_Y, 134 SWIZZLE_Z, 135 SWIZZLE_W, 136 SWIZZLE_X)))); 137 138 vec4_instruction *test_mov = 139 v->MOV(c, swizzle(src_reg(b), BRW_SWIZZLE4(SWIZZLE_Y, 140 SWIZZLE_Z, 141 SWIZZLE_W, 142 SWIZZLE_X))); 143 v->emit(test_mov); 144 145 copy_propagation(v); 146 147 EXPECT_EQ(test_mov->src[0].nr, a.nr); 148 EXPECT_EQ(test_mov->src[0].swizzle, BRW_SWIZZLE4(SWIZZLE_Z, 149 SWIZZLE_W, 150 SWIZZLE_X, 151 SWIZZLE_Y)); 152 } 153 154 TEST_F(copy_propagation_test, test_swizzle_writemask) 155 { 156 dst_reg a = dst_reg(v, glsl_type::vec4_type); 157 dst_reg b = dst_reg(v, glsl_type::vec4_type); 158 dst_reg c = dst_reg(v, glsl_type::vec4_type); 159 160 v->emit(v->MOV(b, swizzle(src_reg(a), BRW_SWIZZLE4(SWIZZLE_X, 161 SWIZZLE_Y, 162 SWIZZLE_X, 163 SWIZZLE_Z)))); 164 165 v->emit(v->MOV(writemask(a, WRITEMASK_XYZ), brw_imm_f(1.0f))); 166 167 vec4_instruction *test_mov = 168 v->MOV(c, swizzle(src_reg(b), BRW_SWIZZLE4(SWIZZLE_W, 169 SWIZZLE_W, 170 SWIZZLE_W, 171 SWIZZLE_W))); 172 v->emit(test_mov); 173 174 copy_propagation(v); 175 176 /* should not copy propagate */ 177 EXPECT_EQ(test_mov->src[0].nr, b.nr); 178 EXPECT_EQ(test_mov->src[0].swizzle, BRW_SWIZZLE4(SWIZZLE_W, 179 SWIZZLE_W, 180 SWIZZLE_W, 181 SWIZZLE_W)); 182 } 183
