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5563 | serge | 1 | /* |
2 | * Copyright © 2012 Intel Corporation |
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3 | * |
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4 | * Permission is hereby granted, free of charge, to any person obtaining a |
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5 | * copy of this software and associated documentation files (the "Software"), |
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6 | * to deal in the Software without restriction, including without limitation |
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7 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
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8 | * and/or sell copies of the Software, and to permit persons to whom the |
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9 | * Software is furnished to do so, subject to the following conditions: |
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10 | * |
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11 | * The above copyright notice and this permission notice (including the next |
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12 | * paragraph) shall be included in all copies or substantial portions of the |
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13 | * Software. |
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14 | * |
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15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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16 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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17 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
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18 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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19 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
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20 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS |
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21 | * IN THE SOFTWARE. |
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22 | */ |
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23 | |||
24 | #include |
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25 | #include "brw_vec4.h" |
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26 | |||
27 | using namespace brw; |
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28 | |||
29 | int ret = 0; |
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30 | |||
31 | #define register_coalesce(v) _register_coalesce(v, __FUNCTION__) |
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32 | |||
33 | class register_coalesce_test : public ::testing::Test { |
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34 | virtual void SetUp(); |
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35 | |||
36 | public: |
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37 | struct brw_context *brw; |
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38 | struct gl_context *ctx; |
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39 | struct gl_shader_program *shader_prog; |
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40 | struct brw_vertex_program *vp; |
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41 | vec4_visitor *v; |
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42 | }; |
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43 | |||
44 | |||
45 | class register_coalesce_vec4_visitor : public vec4_visitor |
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46 | { |
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47 | public: |
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48 | register_coalesce_vec4_visitor(struct brw_context *brw, |
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49 | struct gl_shader_program *shader_prog) |
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50 | : vec4_visitor(brw, NULL, NULL, NULL, NULL, shader_prog, NULL, NULL, |
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51 | false) |
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52 | { |
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53 | } |
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54 | |||
55 | protected: |
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56 | virtual dst_reg *make_reg_for_system_value(ir_variable *ir) |
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57 | { |
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58 | assert(!"Not reached"); |
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59 | return NULL; |
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60 | } |
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61 | |||
62 | virtual int setup_attributes(int payload_reg) |
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63 | { |
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64 | assert(!"Not reached"); |
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65 | return 0; |
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66 | } |
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67 | |||
68 | virtual void emit_prolog() |
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69 | { |
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70 | assert(!"Not reached"); |
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71 | } |
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72 | |||
73 | virtual void emit_program_code() |
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74 | { |
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75 | assert(!"Not reached"); |
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76 | } |
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77 | |||
78 | virtual void emit_thread_end() |
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79 | { |
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80 | assert(!"Not reached"); |
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81 | } |
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82 | |||
83 | virtual void emit_urb_write_header(int mrf) |
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84 | { |
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85 | assert(!"Not reached"); |
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86 | } |
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87 | |||
88 | virtual vec4_instruction *emit_urb_write_opcode(bool complete) |
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89 | { |
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90 | assert(!"Not reached"); |
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91 | } |
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92 | }; |
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93 | |||
94 | |||
95 | void register_coalesce_test::SetUp() |
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96 | { |
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97 | brw = (struct brw_context *)calloc(1, sizeof(*brw)); |
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98 | ctx = &brw->ctx; |
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99 | |||
100 | vp = ralloc(NULL, struct brw_vertex_program); |
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101 | |||
102 | shader_prog = ralloc(NULL, struct gl_shader_program); |
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103 | |||
104 | v = new register_coalesce_vec4_visitor(brw, shader_prog); |
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105 | |||
106 | _mesa_init_vertex_program(ctx, &vp->program, GL_VERTEX_SHADER, 0); |
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107 | |||
108 | brw->gen = 4; |
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109 | } |
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110 | |||
111 | static void |
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112 | _register_coalesce(vec4_visitor *v, const char *func) |
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113 | { |
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114 | bool print = false; |
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115 | |||
116 | if (print) { |
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117 | printf("%s: instructions before:\n", func); |
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118 | v->dump_instructions(); |
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119 | } |
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120 | |||
121 | v->opt_register_coalesce(); |
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122 | |||
123 | if (print) { |
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124 | printf("%s: instructions after:\n", func); |
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125 | v->dump_instructions(); |
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126 | } |
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127 | } |
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128 | |||
129 | TEST_F(register_coalesce_test, test_compute_to_mrf) |
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130 | { |
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131 | src_reg something = src_reg(v, glsl_type::float_type); |
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132 | dst_reg temp = dst_reg(v, glsl_type::float_type); |
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133 | dst_reg init; |
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134 | |||
135 | dst_reg m0 = dst_reg(MRF, 0); |
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136 | m0.writemask = WRITEMASK_X; |
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137 | m0.type = BRW_REGISTER_TYPE_F; |
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138 | |||
139 | vec4_instruction *mul = v->emit(v->MUL(temp, something, src_reg(1.0f))); |
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140 | v->emit(v->MOV(m0, src_reg(temp))); |
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141 | |||
142 | register_coalesce(v); |
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143 | |||
144 | EXPECT_EQ(mul->dst.file, MRF); |
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145 | } |
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146 | |||
147 | |||
148 | TEST_F(register_coalesce_test, test_multiple_use) |
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149 | { |
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150 | src_reg something = src_reg(v, glsl_type::float_type); |
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151 | dst_reg temp = dst_reg(v, glsl_type::vec4_type); |
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152 | dst_reg init; |
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153 | |||
154 | dst_reg m0 = dst_reg(MRF, 0); |
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155 | m0.writemask = WRITEMASK_X; |
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156 | m0.type = BRW_REGISTER_TYPE_F; |
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157 | |||
158 | dst_reg m1 = dst_reg(MRF, 1); |
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159 | m1.writemask = WRITEMASK_XYZW; |
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160 | m1.type = BRW_REGISTER_TYPE_F; |
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161 | |||
162 | src_reg src = src_reg(temp); |
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163 | vec4_instruction *mul = v->emit(v->MUL(temp, something, src_reg(1.0f))); |
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164 | src.swizzle = BRW_SWIZZLE_XXXX; |
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165 | v->emit(v->MOV(m0, src)); |
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166 | src.swizzle = BRW_SWIZZLE_XYZW; |
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167 | v->emit(v->MOV(m1, src)); |
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168 | |||
169 | register_coalesce(v); |
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170 | |||
171 | EXPECT_NE(mul->dst.file, MRF); |
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172 | } |
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173 | |||
174 | TEST_F(register_coalesce_test, test_dp4_mrf) |
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175 | { |
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176 | src_reg some_src_1 = src_reg(v, glsl_type::vec4_type); |
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177 | src_reg some_src_2 = src_reg(v, glsl_type::vec4_type); |
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178 | dst_reg init; |
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179 | |||
180 | dst_reg m0 = dst_reg(MRF, 0); |
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181 | m0.writemask = WRITEMASK_Y; |
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182 | m0.type = BRW_REGISTER_TYPE_F; |
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183 | |||
184 | dst_reg temp = dst_reg(v, glsl_type::float_type); |
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185 | |||
186 | vec4_instruction *dp4 = v->emit(v->DP4(temp, some_src_1, some_src_2)); |
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187 | v->emit(v->MOV(m0, src_reg(temp))); |
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188 | |||
189 | register_coalesce(v); |
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190 | |||
191 | EXPECT_EQ(dp4->dst.file, MRF); |
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192 | EXPECT_EQ(dp4->dst.writemask, WRITEMASK_Y); |
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193 | } |
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194 | |||
195 | TEST_F(register_coalesce_test, test_dp4_grf) |
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196 | { |
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197 | src_reg some_src_1 = src_reg(v, glsl_type::vec4_type); |
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198 | src_reg some_src_2 = src_reg(v, glsl_type::vec4_type); |
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199 | dst_reg init; |
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200 | |||
201 | dst_reg to = dst_reg(v, glsl_type::vec4_type); |
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202 | dst_reg temp = dst_reg(v, glsl_type::float_type); |
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203 | |||
204 | vec4_instruction *dp4 = v->emit(v->DP4(temp, some_src_1, some_src_2)); |
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205 | to.writemask = WRITEMASK_Y; |
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206 | v->emit(v->MOV(to, src_reg(temp))); |
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207 | |||
208 | /* if we don't do something with the result, the automatic dead code |
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209 | * elimination will remove all our instructions. |
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210 | */ |
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211 | src_reg src = src_reg(to); |
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212 | src.negate = true; |
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213 | v->emit(v->MOV(dst_reg(MRF, 0), src)); |
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214 | |||
215 | register_coalesce(v); |
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216 | |||
217 | EXPECT_EQ(dp4->dst.reg, to.reg); |
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218 | EXPECT_EQ(dp4->dst.writemask, WRITEMASK_Y); |
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219 | } |
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220 | |||
221 | TEST_F(register_coalesce_test, test_channel_mul_grf) |
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222 | { |
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223 | src_reg some_src_1 = src_reg(v, glsl_type::vec4_type); |
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224 | src_reg some_src_2 = src_reg(v, glsl_type::vec4_type); |
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225 | dst_reg init; |
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226 | |||
227 | dst_reg to = dst_reg(v, glsl_type::vec4_type); |
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228 | dst_reg temp = dst_reg(v, glsl_type::float_type); |
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229 | |||
230 | vec4_instruction *mul = v->emit(v->MUL(temp, some_src_1, some_src_2)); |
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231 | to.writemask = WRITEMASK_Y; |
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232 | v->emit(v->MOV(to, src_reg(temp))); |
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233 | |||
234 | /* if we don't do something with the result, the automatic dead code |
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235 | * elimination will remove all our instructions. |
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236 | */ |
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237 | src_reg src = src_reg(to); |
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238 | src.negate = true; |
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239 | v->emit(v->MOV(dst_reg(MRF, 0), src)); |
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240 | |||
241 | register_coalesce(v); |
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242 | |||
243 | /* This path isn't supported yet in the reswizzling code, so we're checking |
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244 | * that we haven't done anything bad to scalar non-DP[234]s. |
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245 | */ |
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246 | EXPECT_NE(mul->dst.reg, to.reg); |
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247 | } |