Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2014 Advanced Micro Devices, Inc. |
| 3 | * |
| 4 | * Permission is hereby granted, free of charge, to any person obtaining a |
| 5 | * copy of this software and associated documentation files (the |
| 6 | * "Software"), to deal in the Software without restriction, including |
| 7 | * without limitation the rights to use, copy, modify, merge, publish, |
| 8 | * distribute, sub license, and/or sell copies of the Software, and to |
| 9 | * permit persons to whom the Software is furnished to do so, subject to |
| 10 | * the following conditions: |
| 11 | * |
| 12 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 13 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 14 | * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL |
| 15 | * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, |
| 16 | * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR |
| 17 | * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE |
| 18 | * USE OR OTHER DEALINGS IN THE SOFTWARE. |
| 19 | * |
| 20 | * The above copyright notice and this permission notice (including the |
| 21 | * next paragraph) shall be included in all copies or substantial portions |
| 22 | * of the Software. |
| 23 | * |
| 24 | */ |
| 25 | /* based on pieces from si_pipe.c and radeon_llvm_emit.c */ |
| 26 | #include "ac_llvm_build.h" |
| 27 | |
| 28 | #include <llvm-c/Core.h> |
| 29 | |
| 30 | #include "c11/threads.h" |
| 31 | |
| 32 | #include <assert.h> |
| 33 | #include <stdio.h> |
| 34 | |
| 35 | #include "ac_llvm_util.h" |
Dave Airlie | e265917 | 2017-04-25 23:33:29 +0100 | [diff] [blame] | 36 | #include "ac_exp_param.h" |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 37 | #include "util/bitscan.h" |
| 38 | #include "util/macros.h" |
Connor Abbott | ac27fa7 | 2017-06-05 14:16:43 -0700 | [diff] [blame] | 39 | #include "util/u_atomic.h" |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 40 | #include "sid.h" |
| 41 | |
Dave Airlie | e265917 | 2017-04-25 23:33:29 +0100 | [diff] [blame] | 42 | #include "shader_enums.h" |
| 43 | |
Timothy Arceri | 42627da | 2018-03-07 10:53:34 +1100 | [diff] [blame] | 44 | #define AC_LLVM_INITIAL_CF_DEPTH 4 |
| 45 | |
| 46 | /* Data for if/else/endif and bgnloop/endloop control flow structures. |
| 47 | */ |
| 48 | struct ac_llvm_flow { |
| 49 | /* Loop exit or next part of if/else/endif. */ |
| 50 | LLVMBasicBlockRef next_block; |
| 51 | LLVMBasicBlockRef loop_entry_block; |
| 52 | }; |
| 53 | |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 54 | /* Initialize module-independent parts of the context. |
| 55 | * |
| 56 | * The caller is responsible for initializing ctx::module and ctx::builder. |
| 57 | */ |
| 58 | void |
Nicolai Hähnle | 3db86d8 | 2017-09-13 14:36:23 +0200 | [diff] [blame] | 59 | ac_llvm_context_init(struct ac_llvm_context *ctx, LLVMContextRef context, |
Samuel Pitoiset | 03ef264 | 2017-12-21 17:53:14 +0100 | [diff] [blame] | 60 | enum chip_class chip_class, enum radeon_family family) |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 61 | { |
| 62 | LLVMValueRef args[1]; |
| 63 | |
Nicolai Hähnle | 3db86d8 | 2017-09-13 14:36:23 +0200 | [diff] [blame] | 64 | ctx->chip_class = chip_class; |
Samuel Pitoiset | 03ef264 | 2017-12-21 17:53:14 +0100 | [diff] [blame] | 65 | ctx->family = family; |
Nicolai Hähnle | 3db86d8 | 2017-09-13 14:36:23 +0200 | [diff] [blame] | 66 | |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 67 | ctx->context = context; |
| 68 | ctx->module = NULL; |
| 69 | ctx->builder = NULL; |
| 70 | |
| 71 | ctx->voidt = LLVMVoidTypeInContext(ctx->context); |
| 72 | ctx->i1 = LLVMInt1TypeInContext(ctx->context); |
| 73 | ctx->i8 = LLVMInt8TypeInContext(ctx->context); |
Nicolai Hähnle | 7bf8c94 | 2017-03-30 14:10:26 +0200 | [diff] [blame] | 74 | ctx->i16 = LLVMIntTypeInContext(ctx->context, 16); |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 75 | ctx->i32 = LLVMIntTypeInContext(ctx->context, 32); |
Nicolai Hähnle | 7bf8c94 | 2017-03-30 14:10:26 +0200 | [diff] [blame] | 76 | ctx->i64 = LLVMIntTypeInContext(ctx->context, 64); |
Marek Olšák | 931ec80 | 2018-01-01 21:04:22 +0100 | [diff] [blame] | 77 | ctx->intptr = HAVE_32BIT_POINTERS ? ctx->i32 : ctx->i64; |
Nicolai Hähnle | 7bf8c94 | 2017-03-30 14:10:26 +0200 | [diff] [blame] | 78 | ctx->f16 = LLVMHalfTypeInContext(ctx->context); |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 79 | ctx->f32 = LLVMFloatTypeInContext(ctx->context); |
Nicolai Hähnle | 7bf8c94 | 2017-03-30 14:10:26 +0200 | [diff] [blame] | 80 | ctx->f64 = LLVMDoubleTypeInContext(ctx->context); |
Marek Olšák | 847d0a3 | 2018-01-02 04:34:53 +0100 | [diff] [blame] | 81 | ctx->v2i16 = LLVMVectorType(ctx->i16, 2); |
Timothy Arceri | 309a514 | 2017-11-02 12:59:00 +1100 | [diff] [blame] | 82 | ctx->v2i32 = LLVMVectorType(ctx->i32, 2); |
Timothy Arceri | ee376ac | 2017-11-02 13:02:54 +1100 | [diff] [blame] | 83 | ctx->v3i32 = LLVMVectorType(ctx->i32, 3); |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 84 | ctx->v4i32 = LLVMVectorType(ctx->i32, 4); |
Timothy Arceri | 7f49667 | 2017-11-02 13:24:27 +1100 | [diff] [blame] | 85 | ctx->v2f32 = LLVMVectorType(ctx->f32, 2); |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 86 | ctx->v4f32 = LLVMVectorType(ctx->f32, 4); |
Nicolai Hähnle | edfd3be | 2017-06-08 20:04:28 +0200 | [diff] [blame] | 87 | ctx->v8i32 = LLVMVectorType(ctx->i32, 8); |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 88 | |
Nicolai Hähnle | 331a574 | 2017-05-18 22:02:48 +0200 | [diff] [blame] | 89 | ctx->i32_0 = LLVMConstInt(ctx->i32, 0, false); |
| 90 | ctx->i32_1 = LLVMConstInt(ctx->i32, 1, false); |
Timothy Arceri | 38876c8 | 2018-01-14 10:06:36 +1100 | [diff] [blame] | 91 | ctx->i64_0 = LLVMConstInt(ctx->i64, 0, false); |
| 92 | ctx->i64_1 = LLVMConstInt(ctx->i64, 1, false); |
Nicolai Hähnle | 331a574 | 2017-05-18 22:02:48 +0200 | [diff] [blame] | 93 | ctx->f32_0 = LLVMConstReal(ctx->f32, 0.0); |
| 94 | ctx->f32_1 = LLVMConstReal(ctx->f32, 1.0); |
Timothy Arceri | d7b6b8b | 2018-01-11 22:09:35 +1100 | [diff] [blame] | 95 | ctx->f64_0 = LLVMConstReal(ctx->f64, 0.0); |
Timothy Arceri | c0eb304 | 2018-01-11 17:03:36 +1100 | [diff] [blame] | 96 | ctx->f64_1 = LLVMConstReal(ctx->f64, 1.0); |
Nicolai Hähnle | 331a574 | 2017-05-18 22:02:48 +0200 | [diff] [blame] | 97 | |
Dave Airlie | a76b6c2 | 2017-10-26 15:20:15 +1000 | [diff] [blame] | 98 | ctx->i1false = LLVMConstInt(ctx->i1, 0, false); |
| 99 | ctx->i1true = LLVMConstInt(ctx->i1, 1, false); |
| 100 | |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 101 | ctx->range_md_kind = LLVMGetMDKindIDInContext(ctx->context, |
| 102 | "range", 5); |
| 103 | |
| 104 | ctx->invariant_load_md_kind = LLVMGetMDKindIDInContext(ctx->context, |
| 105 | "invariant.load", 14); |
| 106 | |
| 107 | ctx->fpmath_md_kind = LLVMGetMDKindIDInContext(ctx->context, "fpmath", 6); |
| 108 | |
| 109 | args[0] = LLVMConstReal(ctx->f32, 2.5); |
| 110 | ctx->fpmath_md_2p5_ulp = LLVMMDNodeInContext(ctx->context, args, 1); |
| 111 | |
| 112 | ctx->uniform_md_kind = LLVMGetMDKindIDInContext(ctx->context, |
| 113 | "amdgpu.uniform", 14); |
| 114 | |
| 115 | ctx->empty_md = LLVMMDNodeInContext(ctx->context, NULL, 0); |
| 116 | } |
| 117 | |
Timothy Arceri | 42627da | 2018-03-07 10:53:34 +1100 | [diff] [blame] | 118 | void |
| 119 | ac_llvm_context_dispose(struct ac_llvm_context *ctx) |
| 120 | { |
| 121 | free(ctx->flow); |
| 122 | ctx->flow = NULL; |
| 123 | ctx->flow_depth_max = 0; |
| 124 | } |
| 125 | |
Timothy Arceri | b99ebaa | 2017-12-11 12:54:47 +1100 | [diff] [blame] | 126 | int |
| 127 | ac_get_llvm_num_components(LLVMValueRef value) |
| 128 | { |
| 129 | LLVMTypeRef type = LLVMTypeOf(value); |
| 130 | unsigned num_components = LLVMGetTypeKind(type) == LLVMVectorTypeKind |
| 131 | ? LLVMGetVectorSize(type) |
| 132 | : 1; |
| 133 | return num_components; |
| 134 | } |
| 135 | |
| 136 | LLVMValueRef |
| 137 | ac_llvm_extract_elem(struct ac_llvm_context *ac, |
| 138 | LLVMValueRef value, |
| 139 | int index) |
| 140 | { |
Timothy Arceri | 4a0c24f2 | 2017-12-13 18:46:56 +1100 | [diff] [blame] | 141 | if (LLVMGetTypeKind(LLVMTypeOf(value)) != LLVMVectorTypeKind) { |
| 142 | assert(index == 0); |
Timothy Arceri | b99ebaa | 2017-12-11 12:54:47 +1100 | [diff] [blame] | 143 | return value; |
Timothy Arceri | 4a0c24f2 | 2017-12-13 18:46:56 +1100 | [diff] [blame] | 144 | } |
Timothy Arceri | b99ebaa | 2017-12-11 12:54:47 +1100 | [diff] [blame] | 145 | |
| 146 | return LLVMBuildExtractElement(ac->builder, value, |
| 147 | LLVMConstInt(ac->i32, index, false), ""); |
| 148 | } |
| 149 | |
Timothy Arceri | a9f6b39 | 2018-02-06 14:38:19 +1100 | [diff] [blame] | 150 | int |
| 151 | ac_get_elem_bits(struct ac_llvm_context *ctx, LLVMTypeRef type) |
| 152 | { |
| 153 | if (LLVMGetTypeKind(type) == LLVMVectorTypeKind) |
| 154 | type = LLVMGetElementType(type); |
| 155 | |
| 156 | if (LLVMGetTypeKind(type) == LLVMIntegerTypeKind) |
| 157 | return LLVMGetIntTypeWidth(type); |
| 158 | |
| 159 | if (type == ctx->f16) |
| 160 | return 16; |
| 161 | if (type == ctx->f32) |
| 162 | return 32; |
| 163 | if (type == ctx->f64) |
| 164 | return 64; |
| 165 | |
| 166 | unreachable("Unhandled type kind in get_elem_bits"); |
| 167 | } |
| 168 | |
Connor Abbott | c181d4f | 2017-06-05 14:37:01 -0700 | [diff] [blame] | 169 | unsigned |
| 170 | ac_get_type_size(LLVMTypeRef type) |
| 171 | { |
| 172 | LLVMTypeKind kind = LLVMGetTypeKind(type); |
| 173 | |
| 174 | switch (kind) { |
| 175 | case LLVMIntegerTypeKind: |
| 176 | return LLVMGetIntTypeWidth(type) / 8; |
| 177 | case LLVMFloatTypeKind: |
| 178 | return 4; |
Connor Abbott | fafa299 | 2017-07-18 20:44:47 -0700 | [diff] [blame] | 179 | case LLVMDoubleTypeKind: |
Marek Olšák | 931ec80 | 2018-01-01 21:04:22 +0100 | [diff] [blame] | 180 | return 8; |
Connor Abbott | c181d4f | 2017-06-05 14:37:01 -0700 | [diff] [blame] | 181 | case LLVMPointerTypeKind: |
Marek Olšák | 931ec80 | 2018-01-01 21:04:22 +0100 | [diff] [blame] | 182 | if (LLVMGetPointerAddressSpace(type) == AC_CONST_32BIT_ADDR_SPACE) |
| 183 | return 4; |
Connor Abbott | c181d4f | 2017-06-05 14:37:01 -0700 | [diff] [blame] | 184 | return 8; |
| 185 | case LLVMVectorTypeKind: |
| 186 | return LLVMGetVectorSize(type) * |
| 187 | ac_get_type_size(LLVMGetElementType(type)); |
| 188 | case LLVMArrayTypeKind: |
| 189 | return LLVMGetArrayLength(type) * |
| 190 | ac_get_type_size(LLVMGetElementType(type)); |
| 191 | default: |
| 192 | assert(0); |
| 193 | return 0; |
| 194 | } |
| 195 | } |
| 196 | |
Connor Abbott | 50967cd | 2017-07-18 17:32:10 -0700 | [diff] [blame] | 197 | static LLVMTypeRef to_integer_type_scalar(struct ac_llvm_context *ctx, LLVMTypeRef t) |
| 198 | { |
| 199 | if (t == ctx->f16 || t == ctx->i16) |
| 200 | return ctx->i16; |
| 201 | else if (t == ctx->f32 || t == ctx->i32) |
| 202 | return ctx->i32; |
| 203 | else if (t == ctx->f64 || t == ctx->i64) |
| 204 | return ctx->i64; |
| 205 | else |
| 206 | unreachable("Unhandled integer size"); |
| 207 | } |
| 208 | |
| 209 | LLVMTypeRef |
| 210 | ac_to_integer_type(struct ac_llvm_context *ctx, LLVMTypeRef t) |
| 211 | { |
| 212 | if (LLVMGetTypeKind(t) == LLVMVectorTypeKind) { |
| 213 | LLVMTypeRef elem_type = LLVMGetElementType(t); |
| 214 | return LLVMVectorType(to_integer_type_scalar(ctx, elem_type), |
| 215 | LLVMGetVectorSize(t)); |
| 216 | } |
| 217 | return to_integer_type_scalar(ctx, t); |
| 218 | } |
| 219 | |
| 220 | LLVMValueRef |
| 221 | ac_to_integer(struct ac_llvm_context *ctx, LLVMValueRef v) |
| 222 | { |
| 223 | LLVMTypeRef type = LLVMTypeOf(v); |
| 224 | return LLVMBuildBitCast(ctx->builder, v, ac_to_integer_type(ctx, type), ""); |
| 225 | } |
| 226 | |
| 227 | static LLVMTypeRef to_float_type_scalar(struct ac_llvm_context *ctx, LLVMTypeRef t) |
| 228 | { |
| 229 | if (t == ctx->i16 || t == ctx->f16) |
| 230 | return ctx->f16; |
| 231 | else if (t == ctx->i32 || t == ctx->f32) |
| 232 | return ctx->f32; |
| 233 | else if (t == ctx->i64 || t == ctx->f64) |
| 234 | return ctx->f64; |
| 235 | else |
| 236 | unreachable("Unhandled float size"); |
| 237 | } |
| 238 | |
| 239 | LLVMTypeRef |
| 240 | ac_to_float_type(struct ac_llvm_context *ctx, LLVMTypeRef t) |
| 241 | { |
| 242 | if (LLVMGetTypeKind(t) == LLVMVectorTypeKind) { |
| 243 | LLVMTypeRef elem_type = LLVMGetElementType(t); |
| 244 | return LLVMVectorType(to_float_type_scalar(ctx, elem_type), |
| 245 | LLVMGetVectorSize(t)); |
| 246 | } |
| 247 | return to_float_type_scalar(ctx, t); |
| 248 | } |
| 249 | |
| 250 | LLVMValueRef |
| 251 | ac_to_float(struct ac_llvm_context *ctx, LLVMValueRef v) |
| 252 | { |
| 253 | LLVMTypeRef type = LLVMTypeOf(v); |
| 254 | return LLVMBuildBitCast(ctx->builder, v, ac_to_float_type(ctx, type), ""); |
| 255 | } |
| 256 | |
| 257 | |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 258 | LLVMValueRef |
Marek Olšák | 7f1446a | 2017-02-26 00:41:37 +0100 | [diff] [blame] | 259 | ac_build_intrinsic(struct ac_llvm_context *ctx, const char *name, |
| 260 | LLVMTypeRef return_type, LLVMValueRef *params, |
| 261 | unsigned param_count, unsigned attrib_mask) |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 262 | { |
Marek Olšák | 940da36 | 2017-02-22 02:29:12 +0100 | [diff] [blame] | 263 | LLVMValueRef function, call; |
Marek Olšák | 3bf1e03 | 2018-02-02 19:26:49 +0100 | [diff] [blame] | 264 | bool set_callsite_attrs = !(attrib_mask & AC_FUNC_ATTR_LEGACY); |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 265 | |
| 266 | function = LLVMGetNamedFunction(ctx->module, name); |
| 267 | if (!function) { |
| 268 | LLVMTypeRef param_types[32], function_type; |
| 269 | unsigned i; |
| 270 | |
| 271 | assert(param_count <= 32); |
| 272 | |
| 273 | for (i = 0; i < param_count; ++i) { |
| 274 | assert(params[i]); |
| 275 | param_types[i] = LLVMTypeOf(params[i]); |
| 276 | } |
| 277 | function_type = |
| 278 | LLVMFunctionType(return_type, param_types, param_count, 0); |
| 279 | function = LLVMAddFunction(ctx->module, name, function_type); |
| 280 | |
| 281 | LLVMSetFunctionCallConv(function, LLVMCCallConv); |
| 282 | LLVMSetLinkage(function, LLVMExternalLinkage); |
| 283 | |
Marek Olšák | 940da36 | 2017-02-22 02:29:12 +0100 | [diff] [blame] | 284 | if (!set_callsite_attrs) |
| 285 | ac_add_func_attributes(ctx->context, function, attrib_mask); |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 286 | } |
Marek Olšák | 940da36 | 2017-02-22 02:29:12 +0100 | [diff] [blame] | 287 | |
| 288 | call = LLVMBuildCall(ctx->builder, function, params, param_count, ""); |
| 289 | if (set_callsite_attrs) |
| 290 | ac_add_func_attributes(ctx->context, call, attrib_mask); |
| 291 | return call; |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 292 | } |
| 293 | |
Marek Olšák | 9af0331 | 2017-02-23 22:58:49 +0100 | [diff] [blame] | 294 | /** |
| 295 | * Given the i32 or vNi32 \p type, generate the textual name (e.g. for use with |
| 296 | * intrinsic names). |
| 297 | */ |
| 298 | void ac_build_type_name_for_intr(LLVMTypeRef type, char *buf, unsigned bufsize) |
| 299 | { |
| 300 | LLVMTypeRef elem_type = type; |
| 301 | |
| 302 | assert(bufsize >= 8); |
| 303 | |
| 304 | if (LLVMGetTypeKind(type) == LLVMVectorTypeKind) { |
| 305 | int ret = snprintf(buf, bufsize, "v%u", |
| 306 | LLVMGetVectorSize(type)); |
| 307 | if (ret < 0) { |
| 308 | char *type_name = LLVMPrintTypeToString(type); |
| 309 | fprintf(stderr, "Error building type name for: %s\n", |
| 310 | type_name); |
| 311 | return; |
| 312 | } |
| 313 | elem_type = LLVMGetElementType(type); |
| 314 | buf += ret; |
| 315 | bufsize -= ret; |
| 316 | } |
| 317 | switch (LLVMGetTypeKind(elem_type)) { |
| 318 | default: break; |
| 319 | case LLVMIntegerTypeKind: |
| 320 | snprintf(buf, bufsize, "i%d", LLVMGetIntTypeWidth(elem_type)); |
| 321 | break; |
| 322 | case LLVMFloatTypeKind: |
| 323 | snprintf(buf, bufsize, "f32"); |
| 324 | break; |
| 325 | case LLVMDoubleTypeKind: |
| 326 | snprintf(buf, bufsize, "f64"); |
| 327 | break; |
| 328 | } |
| 329 | } |
| 330 | |
Nicolai Hähnle | 052b974 | 2017-09-29 11:17:03 +0200 | [diff] [blame] | 331 | /** |
| 332 | * Helper function that builds an LLVM IR PHI node and immediately adds |
| 333 | * incoming edges. |
| 334 | */ |
| 335 | LLVMValueRef |
| 336 | ac_build_phi(struct ac_llvm_context *ctx, LLVMTypeRef type, |
| 337 | unsigned count_incoming, LLVMValueRef *values, |
| 338 | LLVMBasicBlockRef *blocks) |
| 339 | { |
| 340 | LLVMValueRef phi = LLVMBuildPhi(ctx->builder, type, ""); |
| 341 | LLVMAddIncoming(phi, values, blocks, count_incoming); |
| 342 | return phi; |
| 343 | } |
| 344 | |
Connor Abbott | ac27fa7 | 2017-06-05 14:16:43 -0700 | [diff] [blame] | 345 | /* Prevent optimizations (at least of memory accesses) across the current |
| 346 | * point in the program by emitting empty inline assembly that is marked as |
| 347 | * having side effects. |
| 348 | * |
| 349 | * Optionally, a value can be passed through the inline assembly to prevent |
| 350 | * LLVM from hoisting calls to ReadNone functions. |
| 351 | */ |
| 352 | void |
| 353 | ac_build_optimization_barrier(struct ac_llvm_context *ctx, |
| 354 | LLVMValueRef *pvgpr) |
| 355 | { |
| 356 | static int counter = 0; |
| 357 | |
| 358 | LLVMBuilderRef builder = ctx->builder; |
| 359 | char code[16]; |
| 360 | |
| 361 | snprintf(code, sizeof(code), "; %d", p_atomic_inc_return(&counter)); |
| 362 | |
| 363 | if (!pvgpr) { |
| 364 | LLVMTypeRef ftype = LLVMFunctionType(ctx->voidt, NULL, 0, false); |
| 365 | LLVMValueRef inlineasm = LLVMConstInlineAsm(ftype, code, "", true, false); |
| 366 | LLVMBuildCall(builder, inlineasm, NULL, 0, ""); |
| 367 | } else { |
| 368 | LLVMTypeRef ftype = LLVMFunctionType(ctx->i32, &ctx->i32, 1, false); |
| 369 | LLVMValueRef inlineasm = LLVMConstInlineAsm(ftype, code, "=v,0", true, false); |
| 370 | LLVMValueRef vgpr = *pvgpr; |
| 371 | LLVMTypeRef vgpr_type = LLVMTypeOf(vgpr); |
| 372 | unsigned vgpr_size = ac_get_type_size(vgpr_type); |
| 373 | LLVMValueRef vgpr0; |
| 374 | |
| 375 | assert(vgpr_size % 4 == 0); |
| 376 | |
| 377 | vgpr = LLVMBuildBitCast(builder, vgpr, LLVMVectorType(ctx->i32, vgpr_size / 4), ""); |
| 378 | vgpr0 = LLVMBuildExtractElement(builder, vgpr, ctx->i32_0, ""); |
| 379 | vgpr0 = LLVMBuildCall(builder, inlineasm, &vgpr0, 1, ""); |
| 380 | vgpr = LLVMBuildInsertElement(builder, vgpr, vgpr0, ctx->i32_0, ""); |
| 381 | vgpr = LLVMBuildBitCast(builder, vgpr, vgpr_type, ""); |
| 382 | |
| 383 | *pvgpr = vgpr; |
| 384 | } |
| 385 | } |
| 386 | |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 387 | LLVMValueRef |
Timothy Arceri | b7b89bb | 2018-02-02 13:54:48 +1100 | [diff] [blame] | 388 | ac_build_shader_clock(struct ac_llvm_context *ctx) |
| 389 | { |
| 390 | LLVMValueRef tmp = ac_build_intrinsic(ctx, "llvm.readcyclecounter", |
| 391 | ctx->i64, NULL, 0, 0); |
| 392 | return LLVMBuildBitCast(ctx->builder, tmp, ctx->v2i32, ""); |
| 393 | } |
| 394 | |
| 395 | LLVMValueRef |
Connor Abbott | bd73b89 | 2017-06-05 15:20:04 -0700 | [diff] [blame] | 396 | ac_build_ballot(struct ac_llvm_context *ctx, |
| 397 | LLVMValueRef value) |
| 398 | { |
| 399 | LLVMValueRef args[3] = { |
| 400 | value, |
| 401 | ctx->i32_0, |
| 402 | LLVMConstInt(ctx->i32, LLVMIntNE, 0) |
| 403 | }; |
| 404 | |
| 405 | /* We currently have no other way to prevent LLVM from lifting the icmp |
| 406 | * calls to a dominating basic block. |
| 407 | */ |
| 408 | ac_build_optimization_barrier(ctx, &args[0]); |
| 409 | |
Daniel Schürmann | d19f20e | 2018-02-28 20:26:03 +0100 | [diff] [blame] | 410 | args[0] = ac_to_integer(ctx, args[0]); |
Connor Abbott | bd73b89 | 2017-06-05 15:20:04 -0700 | [diff] [blame] | 411 | |
| 412 | return ac_build_intrinsic(ctx, |
| 413 | "llvm.amdgcn.icmp.i32", |
| 414 | ctx->i64, args, 3, |
| 415 | AC_FUNC_ATTR_NOUNWIND | |
| 416 | AC_FUNC_ATTR_READNONE | |
| 417 | AC_FUNC_ATTR_CONVERGENT); |
| 418 | } |
| 419 | |
| 420 | LLVMValueRef |
Connor Abbott | b8a51c8 | 2017-06-06 16:40:26 -0700 | [diff] [blame] | 421 | ac_build_vote_all(struct ac_llvm_context *ctx, LLVMValueRef value) |
| 422 | { |
| 423 | LLVMValueRef active_set = ac_build_ballot(ctx, ctx->i32_1); |
| 424 | LLVMValueRef vote_set = ac_build_ballot(ctx, value); |
| 425 | return LLVMBuildICmp(ctx->builder, LLVMIntEQ, vote_set, active_set, ""); |
| 426 | } |
| 427 | |
| 428 | LLVMValueRef |
| 429 | ac_build_vote_any(struct ac_llvm_context *ctx, LLVMValueRef value) |
| 430 | { |
| 431 | LLVMValueRef vote_set = ac_build_ballot(ctx, value); |
| 432 | return LLVMBuildICmp(ctx->builder, LLVMIntNE, vote_set, |
| 433 | LLVMConstInt(ctx->i64, 0, 0), ""); |
| 434 | } |
| 435 | |
| 436 | LLVMValueRef |
| 437 | ac_build_vote_eq(struct ac_llvm_context *ctx, LLVMValueRef value) |
| 438 | { |
| 439 | LLVMValueRef active_set = ac_build_ballot(ctx, ctx->i32_1); |
| 440 | LLVMValueRef vote_set = ac_build_ballot(ctx, value); |
| 441 | |
| 442 | LLVMValueRef all = LLVMBuildICmp(ctx->builder, LLVMIntEQ, |
| 443 | vote_set, active_set, ""); |
| 444 | LLVMValueRef none = LLVMBuildICmp(ctx->builder, LLVMIntEQ, |
| 445 | vote_set, |
| 446 | LLVMConstInt(ctx->i64, 0, 0), ""); |
| 447 | return LLVMBuildOr(ctx->builder, all, none, ""); |
| 448 | } |
| 449 | |
| 450 | LLVMValueRef |
Timothy Arceri | caf15ce | 2017-11-10 13:55:48 +1100 | [diff] [blame] | 451 | ac_build_varying_gather_values(struct ac_llvm_context *ctx, LLVMValueRef *values, |
| 452 | unsigned value_count, unsigned component) |
| 453 | { |
| 454 | LLVMValueRef vec = NULL; |
| 455 | |
| 456 | if (value_count == 1) { |
| 457 | return values[component]; |
| 458 | } else if (!value_count) |
| 459 | unreachable("value_count is 0"); |
| 460 | |
| 461 | for (unsigned i = component; i < value_count + component; i++) { |
| 462 | LLVMValueRef value = values[i]; |
| 463 | |
Timothy Arceri | 5b9362c | 2018-01-19 16:48:43 +1100 | [diff] [blame] | 464 | if (i == component) |
Timothy Arceri | caf15ce | 2017-11-10 13:55:48 +1100 | [diff] [blame] | 465 | vec = LLVMGetUndef( LLVMVectorType(LLVMTypeOf(value), value_count)); |
| 466 | LLVMValueRef index = LLVMConstInt(ctx->i32, i - component, false); |
| 467 | vec = LLVMBuildInsertElement(ctx->builder, vec, value, index, ""); |
| 468 | } |
| 469 | return vec; |
| 470 | } |
| 471 | |
| 472 | LLVMValueRef |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 473 | ac_build_gather_values_extended(struct ac_llvm_context *ctx, |
| 474 | LLVMValueRef *values, |
| 475 | unsigned value_count, |
| 476 | unsigned value_stride, |
Nicolai Hähnle | ac2ab5a | 2017-06-25 13:04:51 +0200 | [diff] [blame] | 477 | bool load, |
| 478 | bool always_vector) |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 479 | { |
| 480 | LLVMBuilderRef builder = ctx->builder; |
Marek Olšák | c7878b0 | 2017-02-23 01:34:27 +0100 | [diff] [blame] | 481 | LLVMValueRef vec = NULL; |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 482 | unsigned i; |
| 483 | |
Nicolai Hähnle | ac2ab5a | 2017-06-25 13:04:51 +0200 | [diff] [blame] | 484 | if (value_count == 1 && !always_vector) { |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 485 | if (load) |
| 486 | return LLVMBuildLoad(builder, values[0], ""); |
| 487 | return values[0]; |
| 488 | } else if (!value_count) |
| 489 | unreachable("value_count is 0"); |
| 490 | |
| 491 | for (i = 0; i < value_count; i++) { |
| 492 | LLVMValueRef value = values[i * value_stride]; |
| 493 | if (load) |
| 494 | value = LLVMBuildLoad(builder, value, ""); |
| 495 | |
| 496 | if (!i) |
| 497 | vec = LLVMGetUndef( LLVMVectorType(LLVMTypeOf(value), value_count)); |
| 498 | LLVMValueRef index = LLVMConstInt(ctx->i32, i, false); |
| 499 | vec = LLVMBuildInsertElement(builder, vec, value, index, ""); |
| 500 | } |
| 501 | return vec; |
| 502 | } |
| 503 | |
| 504 | LLVMValueRef |
| 505 | ac_build_gather_values(struct ac_llvm_context *ctx, |
| 506 | LLVMValueRef *values, |
| 507 | unsigned value_count) |
| 508 | { |
Nicolai Hähnle | ac2ab5a | 2017-06-25 13:04:51 +0200 | [diff] [blame] | 509 | return ac_build_gather_values_extended(ctx, values, value_count, 1, false, false); |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 510 | } |
| 511 | |
Marek Olšák | be973ed | 2018-01-30 18:34:25 +0100 | [diff] [blame] | 512 | /* Expand a scalar or vector to <4 x type> by filling the remaining channels |
| 513 | * with undef. Extract at most num_channels components from the input. |
| 514 | */ |
| 515 | LLVMValueRef ac_build_expand_to_vec4(struct ac_llvm_context *ctx, |
| 516 | LLVMValueRef value, |
| 517 | unsigned num_channels) |
| 518 | { |
| 519 | LLVMTypeRef elemtype; |
| 520 | LLVMValueRef chan[4]; |
| 521 | |
| 522 | if (LLVMGetTypeKind(LLVMTypeOf(value)) == LLVMVectorTypeKind) { |
| 523 | unsigned vec_size = LLVMGetVectorSize(LLVMTypeOf(value)); |
| 524 | num_channels = MIN2(num_channels, vec_size); |
| 525 | |
| 526 | if (num_channels >= 4) |
| 527 | return value; |
| 528 | |
| 529 | for (unsigned i = 0; i < num_channels; i++) |
| 530 | chan[i] = ac_llvm_extract_elem(ctx, value, i); |
| 531 | |
| 532 | elemtype = LLVMGetElementType(LLVMTypeOf(value)); |
| 533 | } else { |
| 534 | if (num_channels) { |
| 535 | assert(num_channels == 1); |
| 536 | chan[0] = value; |
| 537 | } |
| 538 | elemtype = LLVMTypeOf(value); |
| 539 | } |
| 540 | |
| 541 | while (num_channels < 4) |
| 542 | chan[num_channels++] = LLVMGetUndef(elemtype); |
| 543 | |
| 544 | return ac_build_gather_values(ctx, chan, 4); |
| 545 | } |
| 546 | |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 547 | LLVMValueRef |
Marek Olšák | 7f1446a | 2017-02-26 00:41:37 +0100 | [diff] [blame] | 548 | ac_build_fdiv(struct ac_llvm_context *ctx, |
| 549 | LLVMValueRef num, |
| 550 | LLVMValueRef den) |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 551 | { |
| 552 | LLVMValueRef ret = LLVMBuildFDiv(ctx->builder, num, den, ""); |
| 553 | |
Samuel Pitoiset | d43e72f | 2017-12-12 18:10:20 +0100 | [diff] [blame] | 554 | /* Use v_rcp_f32 instead of precise division. */ |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 555 | if (!LLVMIsConstant(ret)) |
| 556 | LLVMSetMetadata(ret, ctx->fpmath_md_kind, ctx->fpmath_md_2p5_ulp); |
| 557 | return ret; |
| 558 | } |
| 559 | |
| 560 | /* Coordinates for cube map selection. sc, tc, and ma are as in Table 8.27 |
| 561 | * of the OpenGL 4.5 (Compatibility Profile) specification, except ma is |
| 562 | * already multiplied by two. id is the cube face number. |
| 563 | */ |
| 564 | struct cube_selection_coords { |
| 565 | LLVMValueRef stc[2]; |
| 566 | LLVMValueRef ma; |
| 567 | LLVMValueRef id; |
| 568 | }; |
| 569 | |
| 570 | static void |
| 571 | build_cube_intrinsic(struct ac_llvm_context *ctx, |
| 572 | LLVMValueRef in[3], |
| 573 | struct cube_selection_coords *out) |
| 574 | { |
Marek Olšák | 12beef0 | 2017-04-25 02:18:10 +0200 | [diff] [blame] | 575 | LLVMTypeRef f32 = ctx->f32; |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 576 | |
Marek Olšák | 12beef0 | 2017-04-25 02:18:10 +0200 | [diff] [blame] | 577 | out->stc[1] = ac_build_intrinsic(ctx, "llvm.amdgcn.cubetc", |
| 578 | f32, in, 3, AC_FUNC_ATTR_READNONE); |
| 579 | out->stc[0] = ac_build_intrinsic(ctx, "llvm.amdgcn.cubesc", |
| 580 | f32, in, 3, AC_FUNC_ATTR_READNONE); |
| 581 | out->ma = ac_build_intrinsic(ctx, "llvm.amdgcn.cubema", |
| 582 | f32, in, 3, AC_FUNC_ATTR_READNONE); |
| 583 | out->id = ac_build_intrinsic(ctx, "llvm.amdgcn.cubeid", |
| 584 | f32, in, 3, AC_FUNC_ATTR_READNONE); |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 585 | } |
| 586 | |
| 587 | /** |
| 588 | * Build a manual selection sequence for cube face sc/tc coordinates and |
| 589 | * major axis vector (multiplied by 2 for consistency) for the given |
| 590 | * vec3 \p coords, for the face implied by \p selcoords. |
| 591 | * |
| 592 | * For the major axis, we always adjust the sign to be in the direction of |
| 593 | * selcoords.ma; i.e., a positive out_ma means that coords is pointed towards |
| 594 | * the selcoords major axis. |
| 595 | */ |
Nicolai Hähnle | a6ea4c1 | 2017-09-22 19:14:16 +0200 | [diff] [blame] | 596 | static void build_cube_select(struct ac_llvm_context *ctx, |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 597 | const struct cube_selection_coords *selcoords, |
| 598 | const LLVMValueRef *coords, |
| 599 | LLVMValueRef *out_st, |
| 600 | LLVMValueRef *out_ma) |
| 601 | { |
Nicolai Hähnle | a6ea4c1 | 2017-09-22 19:14:16 +0200 | [diff] [blame] | 602 | LLVMBuilderRef builder = ctx->builder; |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 603 | LLVMTypeRef f32 = LLVMTypeOf(coords[0]); |
| 604 | LLVMValueRef is_ma_positive; |
| 605 | LLVMValueRef sgn_ma; |
| 606 | LLVMValueRef is_ma_z, is_not_ma_z; |
| 607 | LLVMValueRef is_ma_y; |
| 608 | LLVMValueRef is_ma_x; |
| 609 | LLVMValueRef sgn; |
| 610 | LLVMValueRef tmp; |
| 611 | |
| 612 | is_ma_positive = LLVMBuildFCmp(builder, LLVMRealUGE, |
| 613 | selcoords->ma, LLVMConstReal(f32, 0.0), ""); |
| 614 | sgn_ma = LLVMBuildSelect(builder, is_ma_positive, |
| 615 | LLVMConstReal(f32, 1.0), LLVMConstReal(f32, -1.0), ""); |
| 616 | |
| 617 | is_ma_z = LLVMBuildFCmp(builder, LLVMRealUGE, selcoords->id, LLVMConstReal(f32, 4.0), ""); |
| 618 | is_not_ma_z = LLVMBuildNot(builder, is_ma_z, ""); |
| 619 | is_ma_y = LLVMBuildAnd(builder, is_not_ma_z, |
| 620 | LLVMBuildFCmp(builder, LLVMRealUGE, selcoords->id, LLVMConstReal(f32, 2.0), ""), ""); |
| 621 | is_ma_x = LLVMBuildAnd(builder, is_not_ma_z, LLVMBuildNot(builder, is_ma_y, ""), ""); |
| 622 | |
| 623 | /* Select sc */ |
Nicolai Hähnle | 5be5c1e | 2017-09-22 19:05:52 +0200 | [diff] [blame] | 624 | tmp = LLVMBuildSelect(builder, is_ma_x, coords[2], coords[0], ""); |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 625 | sgn = LLVMBuildSelect(builder, is_ma_y, LLVMConstReal(f32, 1.0), |
Nicolai Hähnle | 5be5c1e | 2017-09-22 19:05:52 +0200 | [diff] [blame] | 626 | LLVMBuildSelect(builder, is_ma_z, sgn_ma, |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 627 | LLVMBuildFNeg(builder, sgn_ma, ""), ""), ""); |
| 628 | out_st[0] = LLVMBuildFMul(builder, tmp, sgn, ""); |
| 629 | |
| 630 | /* Select tc */ |
| 631 | tmp = LLVMBuildSelect(builder, is_ma_y, coords[2], coords[1], ""); |
Nicolai Hähnle | 5be5c1e | 2017-09-22 19:05:52 +0200 | [diff] [blame] | 632 | sgn = LLVMBuildSelect(builder, is_ma_y, sgn_ma, |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 633 | LLVMConstReal(f32, -1.0), ""); |
| 634 | out_st[1] = LLVMBuildFMul(builder, tmp, sgn, ""); |
| 635 | |
| 636 | /* Select ma */ |
| 637 | tmp = LLVMBuildSelect(builder, is_ma_z, coords[2], |
| 638 | LLVMBuildSelect(builder, is_ma_y, coords[1], coords[0], ""), ""); |
Nicolai Hähnle | a6ea4c1 | 2017-09-22 19:14:16 +0200 | [diff] [blame] | 639 | tmp = ac_build_intrinsic(ctx, "llvm.fabs.f32", |
| 640 | ctx->f32, &tmp, 1, AC_FUNC_ATTR_READNONE); |
| 641 | *out_ma = LLVMBuildFMul(builder, tmp, LLVMConstReal(f32, 2.0), ""); |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 642 | } |
| 643 | |
| 644 | void |
| 645 | ac_prepare_cube_coords(struct ac_llvm_context *ctx, |
Nicolai Hähnle | e0af3be | 2017-09-13 10:47:02 +0200 | [diff] [blame] | 646 | bool is_deriv, bool is_array, bool is_lod, |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 647 | LLVMValueRef *coords_arg, |
| 648 | LLVMValueRef *derivs_arg) |
| 649 | { |
| 650 | |
| 651 | LLVMBuilderRef builder = ctx->builder; |
| 652 | struct cube_selection_coords selcoords; |
| 653 | LLVMValueRef coords[3]; |
| 654 | LLVMValueRef invma; |
| 655 | |
Nicolai Hähnle | e0af3be | 2017-09-13 10:47:02 +0200 | [diff] [blame] | 656 | if (is_array && !is_lod) { |
Nicolai Hähnle | 94736d3 | 2017-09-13 15:33:23 +0200 | [diff] [blame] | 657 | LLVMValueRef tmp = coords_arg[3]; |
| 658 | tmp = ac_build_intrinsic(ctx, "llvm.rint.f32", ctx->f32, &tmp, 1, 0); |
| 659 | |
| 660 | /* Section 8.9 (Texture Functions) of the GLSL 4.50 spec says: |
| 661 | * |
| 662 | * "For Array forms, the array layer used will be |
| 663 | * |
| 664 | * max(0, min(d−1, floor(layer+0.5))) |
| 665 | * |
| 666 | * where d is the depth of the texture array and layer |
| 667 | * comes from the component indicated in the tables below. |
| 668 | * Workaroudn for an issue where the layer is taken from a |
| 669 | * helper invocation which happens to fall on a different |
| 670 | * layer due to extrapolation." |
| 671 | * |
| 672 | * VI and earlier attempt to implement this in hardware by |
| 673 | * clamping the value of coords[2] = (8 * layer) + face. |
| 674 | * Unfortunately, this means that the we end up with the wrong |
| 675 | * face when clamping occurs. |
| 676 | * |
| 677 | * Clamp the layer earlier to work around the issue. |
| 678 | */ |
| 679 | if (ctx->chip_class <= VI) { |
| 680 | LLVMValueRef ge0; |
| 681 | ge0 = LLVMBuildFCmp(builder, LLVMRealOGE, tmp, ctx->f32_0, ""); |
| 682 | tmp = LLVMBuildSelect(builder, ge0, tmp, ctx->f32_0, ""); |
| 683 | } |
| 684 | |
| 685 | coords_arg[3] = tmp; |
Nicolai Hähnle | e0af3be | 2017-09-13 10:47:02 +0200 | [diff] [blame] | 686 | } |
| 687 | |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 688 | build_cube_intrinsic(ctx, coords_arg, &selcoords); |
| 689 | |
Marek Olšák | 7f1446a | 2017-02-26 00:41:37 +0100 | [diff] [blame] | 690 | invma = ac_build_intrinsic(ctx, "llvm.fabs.f32", |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 691 | ctx->f32, &selcoords.ma, 1, AC_FUNC_ATTR_READNONE); |
Marek Olšák | 7f1446a | 2017-02-26 00:41:37 +0100 | [diff] [blame] | 692 | invma = ac_build_fdiv(ctx, LLVMConstReal(ctx->f32, 1.0), invma); |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 693 | |
| 694 | for (int i = 0; i < 2; ++i) |
| 695 | coords[i] = LLVMBuildFMul(builder, selcoords.stc[i], invma, ""); |
| 696 | |
| 697 | coords[2] = selcoords.id; |
| 698 | |
| 699 | if (is_deriv && derivs_arg) { |
| 700 | LLVMValueRef derivs[4]; |
| 701 | int axis; |
| 702 | |
| 703 | /* Convert cube derivatives to 2D derivatives. */ |
| 704 | for (axis = 0; axis < 2; axis++) { |
| 705 | LLVMValueRef deriv_st[2]; |
| 706 | LLVMValueRef deriv_ma; |
| 707 | |
| 708 | /* Transform the derivative alongside the texture |
| 709 | * coordinate. Mathematically, the correct formula is |
| 710 | * as follows. Assume we're projecting onto the +Z face |
| 711 | * and denote by dx/dh the derivative of the (original) |
| 712 | * X texture coordinate with respect to horizontal |
| 713 | * window coordinates. The projection onto the +Z face |
| 714 | * plane is: |
| 715 | * |
| 716 | * f(x,z) = x/z |
| 717 | * |
| 718 | * Then df/dh = df/dx * dx/dh + df/dz * dz/dh |
| 719 | * = 1/z * dx/dh - x/z * 1/z * dz/dh. |
| 720 | * |
| 721 | * This motivatives the implementation below. |
| 722 | * |
| 723 | * Whether this actually gives the expected results for |
| 724 | * apps that might feed in derivatives obtained via |
| 725 | * finite differences is anyone's guess. The OpenGL spec |
| 726 | * seems awfully quiet about how textureGrad for cube |
| 727 | * maps should be handled. |
| 728 | */ |
Nicolai Hähnle | a6ea4c1 | 2017-09-22 19:14:16 +0200 | [diff] [blame] | 729 | build_cube_select(ctx, &selcoords, &derivs_arg[axis * 3], |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 730 | deriv_st, &deriv_ma); |
| 731 | |
| 732 | deriv_ma = LLVMBuildFMul(builder, deriv_ma, invma, ""); |
| 733 | |
| 734 | for (int i = 0; i < 2; ++i) |
| 735 | derivs[axis * 2 + i] = |
| 736 | LLVMBuildFSub(builder, |
| 737 | LLVMBuildFMul(builder, deriv_st[i], invma, ""), |
| 738 | LLVMBuildFMul(builder, deriv_ma, coords[i], ""), ""); |
| 739 | } |
| 740 | |
| 741 | memcpy(derivs_arg, derivs, sizeof(derivs)); |
| 742 | } |
| 743 | |
| 744 | /* Shift the texture coordinate. This must be applied after the |
| 745 | * derivative calculation. |
| 746 | */ |
| 747 | for (int i = 0; i < 2; ++i) |
| 748 | coords[i] = LLVMBuildFAdd(builder, coords[i], LLVMConstReal(ctx->f32, 1.5), ""); |
| 749 | |
| 750 | if (is_array) { |
| 751 | /* for cube arrays coord.z = coord.w(array_index) * 8 + face */ |
| 752 | /* coords_arg.w component - array_index for cube arrays */ |
| 753 | LLVMValueRef tmp = LLVMBuildFMul(ctx->builder, coords_arg[3], LLVMConstReal(ctx->f32, 8.0), ""); |
| 754 | coords[2] = LLVMBuildFAdd(ctx->builder, tmp, coords[2], ""); |
| 755 | } |
| 756 | |
| 757 | memcpy(coords_arg, coords, sizeof(coords)); |
| 758 | } |
| 759 | |
| 760 | |
| 761 | LLVMValueRef |
| 762 | ac_build_fs_interp(struct ac_llvm_context *ctx, |
| 763 | LLVMValueRef llvm_chan, |
| 764 | LLVMValueRef attr_number, |
| 765 | LLVMValueRef params, |
| 766 | LLVMValueRef i, |
| 767 | LLVMValueRef j) |
| 768 | { |
| 769 | LLVMValueRef args[5]; |
| 770 | LLVMValueRef p1; |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 771 | |
| 772 | args[0] = i; |
| 773 | args[1] = llvm_chan; |
| 774 | args[2] = attr_number; |
| 775 | args[3] = params; |
| 776 | |
Marek Olšák | 7f1446a | 2017-02-26 00:41:37 +0100 | [diff] [blame] | 777 | p1 = ac_build_intrinsic(ctx, "llvm.amdgcn.interp.p1", |
| 778 | ctx->f32, args, 4, AC_FUNC_ATTR_READNONE); |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 779 | |
| 780 | args[0] = p1; |
| 781 | args[1] = j; |
| 782 | args[2] = llvm_chan; |
| 783 | args[3] = attr_number; |
| 784 | args[4] = params; |
| 785 | |
Marek Olšák | 7f1446a | 2017-02-26 00:41:37 +0100 | [diff] [blame] | 786 | return ac_build_intrinsic(ctx, "llvm.amdgcn.interp.p2", |
| 787 | ctx->f32, args, 5, AC_FUNC_ATTR_READNONE); |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 788 | } |
| 789 | |
| 790 | LLVMValueRef |
| 791 | ac_build_fs_interp_mov(struct ac_llvm_context *ctx, |
| 792 | LLVMValueRef parameter, |
| 793 | LLVMValueRef llvm_chan, |
| 794 | LLVMValueRef attr_number, |
| 795 | LLVMValueRef params) |
| 796 | { |
| 797 | LLVMValueRef args[4]; |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 798 | |
| 799 | args[0] = parameter; |
| 800 | args[1] = llvm_chan; |
| 801 | args[2] = attr_number; |
| 802 | args[3] = params; |
| 803 | |
Marek Olšák | 7f1446a | 2017-02-26 00:41:37 +0100 | [diff] [blame] | 804 | return ac_build_intrinsic(ctx, "llvm.amdgcn.interp.mov", |
| 805 | ctx->f32, args, 4, AC_FUNC_ATTR_READNONE); |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 806 | } |
| 807 | |
| 808 | LLVMValueRef |
| 809 | ac_build_gep0(struct ac_llvm_context *ctx, |
| 810 | LLVMValueRef base_ptr, |
| 811 | LLVMValueRef index) |
| 812 | { |
| 813 | LLVMValueRef indices[2] = { |
| 814 | LLVMConstInt(ctx->i32, 0, 0), |
| 815 | index, |
| 816 | }; |
| 817 | return LLVMBuildGEP(ctx->builder, base_ptr, |
| 818 | indices, 2, ""); |
| 819 | } |
| 820 | |
| 821 | void |
| 822 | ac_build_indexed_store(struct ac_llvm_context *ctx, |
| 823 | LLVMValueRef base_ptr, LLVMValueRef index, |
| 824 | LLVMValueRef value) |
| 825 | { |
| 826 | LLVMBuildStore(ctx->builder, value, |
| 827 | ac_build_gep0(ctx, base_ptr, index)); |
| 828 | } |
| 829 | |
| 830 | /** |
| 831 | * Build an LLVM bytecode indexed load using LLVMBuildGEP + LLVMBuildLoad. |
| 832 | * It's equivalent to doing a load from &base_ptr[index]. |
| 833 | * |
| 834 | * \param base_ptr Where the array starts. |
| 835 | * \param index The element index into the array. |
| 836 | * \param uniform Whether the base_ptr and index can be assumed to be |
Marek Olšák | 854593b | 2017-10-08 20:05:44 +0200 | [diff] [blame] | 837 | * dynamically uniform (i.e. load to an SGPR) |
| 838 | * \param invariant Whether the load is invariant (no other opcodes affect it) |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 839 | */ |
Marek Olšák | 854593b | 2017-10-08 20:05:44 +0200 | [diff] [blame] | 840 | static LLVMValueRef |
| 841 | ac_build_load_custom(struct ac_llvm_context *ctx, LLVMValueRef base_ptr, |
| 842 | LLVMValueRef index, bool uniform, bool invariant) |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 843 | { |
Marek Olšák | 854593b | 2017-10-08 20:05:44 +0200 | [diff] [blame] | 844 | LLVMValueRef pointer, result; |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 845 | |
| 846 | pointer = ac_build_gep0(ctx, base_ptr, index); |
| 847 | if (uniform) |
| 848 | LLVMSetMetadata(pointer, ctx->uniform_md_kind, ctx->empty_md); |
Marek Olšák | 854593b | 2017-10-08 20:05:44 +0200 | [diff] [blame] | 849 | result = LLVMBuildLoad(ctx->builder, pointer, ""); |
| 850 | if (invariant) |
| 851 | LLVMSetMetadata(result, ctx->invariant_load_md_kind, ctx->empty_md); |
| 852 | return result; |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 853 | } |
| 854 | |
Marek Olšák | 854593b | 2017-10-08 20:05:44 +0200 | [diff] [blame] | 855 | LLVMValueRef ac_build_load(struct ac_llvm_context *ctx, LLVMValueRef base_ptr, |
| 856 | LLVMValueRef index) |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 857 | { |
Marek Olšák | 854593b | 2017-10-08 20:05:44 +0200 | [diff] [blame] | 858 | return ac_build_load_custom(ctx, base_ptr, index, false, false); |
| 859 | } |
| 860 | |
| 861 | LLVMValueRef ac_build_load_invariant(struct ac_llvm_context *ctx, |
| 862 | LLVMValueRef base_ptr, LLVMValueRef index) |
| 863 | { |
| 864 | return ac_build_load_custom(ctx, base_ptr, index, false, true); |
| 865 | } |
| 866 | |
| 867 | LLVMValueRef ac_build_load_to_sgpr(struct ac_llvm_context *ctx, |
| 868 | LLVMValueRef base_ptr, LLVMValueRef index) |
| 869 | { |
| 870 | return ac_build_load_custom(ctx, base_ptr, index, true, true); |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 871 | } |
| 872 | |
| 873 | /* TBUFFER_STORE_FORMAT_{X,XY,XYZ,XYZW} <- the suffix is selected by num_channels=1..4. |
| 874 | * The type of vdata must be one of i32 (num_channels=1), v2i32 (num_channels=2), |
| 875 | * or v4i32 (num_channels=3,4). |
| 876 | */ |
| 877 | void |
Marek Olšák | 27439df | 2017-02-24 01:20:35 +0100 | [diff] [blame] | 878 | ac_build_buffer_store_dword(struct ac_llvm_context *ctx, |
| 879 | LLVMValueRef rsrc, |
| 880 | LLVMValueRef vdata, |
| 881 | unsigned num_channels, |
Marek Olšák | 8cfdbba | 2017-02-24 20:23:23 +0100 | [diff] [blame] | 882 | LLVMValueRef voffset, |
Marek Olšák | 27439df | 2017-02-24 01:20:35 +0100 | [diff] [blame] | 883 | LLVMValueRef soffset, |
| 884 | unsigned inst_offset, |
Marek Olšák | 27439df | 2017-02-24 01:20:35 +0100 | [diff] [blame] | 885 | bool glc, |
Marek Olšák | 97e21cf | 2017-02-24 02:09:47 +0100 | [diff] [blame] | 886 | bool slc, |
| 887 | bool writeonly_memory, |
Marek Olšák | bcd3e76 | 2017-09-30 15:36:18 +0200 | [diff] [blame] | 888 | bool swizzle_enable_hint) |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 889 | { |
Marek Olšák | bcd3e76 | 2017-09-30 15:36:18 +0200 | [diff] [blame] | 890 | /* SWIZZLE_ENABLE requires that soffset isn't folded into voffset |
| 891 | * (voffset is swizzled, but soffset isn't swizzled). |
| 892 | * llvm.amdgcn.buffer.store doesn't have a separate soffset parameter. |
| 893 | */ |
| 894 | if (!swizzle_enable_hint) { |
Marek Olšák | 97e21cf | 2017-02-24 02:09:47 +0100 | [diff] [blame] | 895 | /* Split 3 channel stores, becase LLVM doesn't support 3-channel |
| 896 | * intrinsics. */ |
| 897 | if (num_channels == 3) { |
| 898 | LLVMValueRef v[3], v01; |
| 899 | |
| 900 | for (int i = 0; i < 3; i++) { |
| 901 | v[i] = LLVMBuildExtractElement(ctx->builder, vdata, |
| 902 | LLVMConstInt(ctx->i32, i, 0), ""); |
| 903 | } |
| 904 | v01 = ac_build_gather_values(ctx, v, 2); |
| 905 | |
| 906 | ac_build_buffer_store_dword(ctx, rsrc, v01, 2, voffset, |
| 907 | soffset, inst_offset, glc, slc, |
Marek Olšák | bcd3e76 | 2017-09-30 15:36:18 +0200 | [diff] [blame] | 908 | writeonly_memory, swizzle_enable_hint); |
Marek Olšák | 97e21cf | 2017-02-24 02:09:47 +0100 | [diff] [blame] | 909 | ac_build_buffer_store_dword(ctx, rsrc, v[2], 1, voffset, |
| 910 | soffset, inst_offset + 8, |
| 911 | glc, slc, |
Marek Olšák | bcd3e76 | 2017-09-30 15:36:18 +0200 | [diff] [blame] | 912 | writeonly_memory, swizzle_enable_hint); |
Marek Olšák | 97e21cf | 2017-02-24 02:09:47 +0100 | [diff] [blame] | 913 | return; |
| 914 | } |
| 915 | |
| 916 | unsigned func = CLAMP(num_channels, 1, 3) - 1; |
| 917 | static const char *types[] = {"f32", "v2f32", "v4f32"}; |
| 918 | char name[256]; |
| 919 | LLVMValueRef offset = soffset; |
| 920 | |
| 921 | if (inst_offset) |
| 922 | offset = LLVMBuildAdd(ctx->builder, offset, |
| 923 | LLVMConstInt(ctx->i32, inst_offset, 0), ""); |
| 924 | if (voffset) |
| 925 | offset = LLVMBuildAdd(ctx->builder, offset, voffset, ""); |
| 926 | |
| 927 | LLVMValueRef args[] = { |
Connor Abbott | b909d27 | 2017-07-18 17:35:35 -0700 | [diff] [blame] | 928 | ac_to_float(ctx, vdata), |
Marek Olšák | 97e21cf | 2017-02-24 02:09:47 +0100 | [diff] [blame] | 929 | LLVMBuildBitCast(ctx->builder, rsrc, ctx->v4i32, ""), |
| 930 | LLVMConstInt(ctx->i32, 0, 0), |
| 931 | offset, |
| 932 | LLVMConstInt(ctx->i1, glc, 0), |
| 933 | LLVMConstInt(ctx->i1, slc, 0), |
| 934 | }; |
| 935 | |
| 936 | snprintf(name, sizeof(name), "llvm.amdgcn.buffer.store.%s", |
| 937 | types[func]); |
| 938 | |
Marek Olšák | 7f1446a | 2017-02-26 00:41:37 +0100 | [diff] [blame] | 939 | ac_build_intrinsic(ctx, name, ctx->voidt, |
| 940 | args, ARRAY_SIZE(args), |
| 941 | writeonly_memory ? |
| 942 | AC_FUNC_ATTR_INACCESSIBLE_MEM_ONLY : |
| 943 | AC_FUNC_ATTR_WRITEONLY); |
Marek Olšák | 97e21cf | 2017-02-24 02:09:47 +0100 | [diff] [blame] | 944 | return; |
| 945 | } |
| 946 | |
Marek Olšák | 27439df | 2017-02-24 01:20:35 +0100 | [diff] [blame] | 947 | static unsigned dfmt[] = { |
| 948 | V_008F0C_BUF_DATA_FORMAT_32, |
| 949 | V_008F0C_BUF_DATA_FORMAT_32_32, |
| 950 | V_008F0C_BUF_DATA_FORMAT_32_32_32, |
| 951 | V_008F0C_BUF_DATA_FORMAT_32_32_32_32 |
| 952 | }; |
| 953 | assert(num_channels >= 1 && num_channels <= 4); |
| 954 | |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 955 | LLVMValueRef args[] = { |
| 956 | rsrc, |
| 957 | vdata, |
| 958 | LLVMConstInt(ctx->i32, num_channels, 0), |
Marek Olšák | 8cfdbba | 2017-02-24 20:23:23 +0100 | [diff] [blame] | 959 | voffset ? voffset : LLVMGetUndef(ctx->i32), |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 960 | soffset, |
| 961 | LLVMConstInt(ctx->i32, inst_offset, 0), |
Marek Olšák | 27439df | 2017-02-24 01:20:35 +0100 | [diff] [blame] | 962 | LLVMConstInt(ctx->i32, dfmt[num_channels - 1], 0), |
| 963 | LLVMConstInt(ctx->i32, V_008F0C_BUF_NUM_FORMAT_UINT, 0), |
Marek Olšák | 8cfdbba | 2017-02-24 20:23:23 +0100 | [diff] [blame] | 964 | LLVMConstInt(ctx->i32, voffset != NULL, 0), |
Marek Olšák | 27439df | 2017-02-24 01:20:35 +0100 | [diff] [blame] | 965 | LLVMConstInt(ctx->i32, 0, 0), /* idxen */ |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 966 | LLVMConstInt(ctx->i32, glc, 0), |
| 967 | LLVMConstInt(ctx->i32, slc, 0), |
Marek Olšák | 27439df | 2017-02-24 01:20:35 +0100 | [diff] [blame] | 968 | LLVMConstInt(ctx->i32, 0, 0), /* tfe*/ |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 969 | }; |
| 970 | |
| 971 | /* The instruction offset field has 12 bits */ |
Marek Olšák | 8cfdbba | 2017-02-24 20:23:23 +0100 | [diff] [blame] | 972 | assert(voffset || inst_offset < (1 << 12)); |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 973 | |
| 974 | /* The intrinsic is overloaded, we need to add a type suffix for overloading to work. */ |
| 975 | unsigned func = CLAMP(num_channels, 1, 3) - 1; |
| 976 | const char *types[] = {"i32", "v2i32", "v4i32"}; |
| 977 | char name[256]; |
| 978 | snprintf(name, sizeof(name), "llvm.SI.tbuffer.store.%s", types[func]); |
| 979 | |
Marek Olšák | 7f1446a | 2017-02-26 00:41:37 +0100 | [diff] [blame] | 980 | ac_build_intrinsic(ctx, name, ctx->voidt, |
| 981 | args, ARRAY_SIZE(args), |
| 982 | AC_FUNC_ATTR_LEGACY); |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 983 | } |
| 984 | |
Samuel Pitoiset | d7c93b5 | 2018-01-10 20:12:09 +0100 | [diff] [blame] | 985 | static LLVMValueRef |
| 986 | ac_build_buffer_load_common(struct ac_llvm_context *ctx, |
| 987 | LLVMValueRef rsrc, |
| 988 | LLVMValueRef vindex, |
| 989 | LLVMValueRef voffset, |
| 990 | unsigned num_channels, |
| 991 | bool glc, |
| 992 | bool slc, |
| 993 | bool can_speculate, |
| 994 | bool use_format) |
| 995 | { |
| 996 | LLVMValueRef args[] = { |
| 997 | LLVMBuildBitCast(ctx->builder, rsrc, ctx->v4i32, ""), |
| 998 | vindex ? vindex : LLVMConstInt(ctx->i32, 0, 0), |
| 999 | voffset, |
| 1000 | LLVMConstInt(ctx->i1, glc, 0), |
| 1001 | LLVMConstInt(ctx->i1, slc, 0) |
| 1002 | }; |
| 1003 | unsigned func = CLAMP(num_channels, 1, 3) - 1; |
| 1004 | |
| 1005 | LLVMTypeRef types[] = {ctx->f32, ctx->v2f32, ctx->v4f32}; |
| 1006 | const char *type_names[] = {"f32", "v2f32", "v4f32"}; |
| 1007 | char name[256]; |
| 1008 | |
| 1009 | if (use_format) { |
| 1010 | snprintf(name, sizeof(name), "llvm.amdgcn.buffer.load.format.%s", |
| 1011 | type_names[func]); |
| 1012 | } else { |
| 1013 | snprintf(name, sizeof(name), "llvm.amdgcn.buffer.load.%s", |
| 1014 | type_names[func]); |
| 1015 | } |
| 1016 | |
| 1017 | return ac_build_intrinsic(ctx, name, types[func], args, |
| 1018 | ARRAY_SIZE(args), |
| 1019 | ac_get_load_intr_attribs(can_speculate)); |
| 1020 | } |
| 1021 | |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 1022 | LLVMValueRef |
| 1023 | ac_build_buffer_load(struct ac_llvm_context *ctx, |
| 1024 | LLVMValueRef rsrc, |
| 1025 | int num_channels, |
| 1026 | LLVMValueRef vindex, |
| 1027 | LLVMValueRef voffset, |
| 1028 | LLVMValueRef soffset, |
| 1029 | unsigned inst_offset, |
| 1030 | unsigned glc, |
Marek Olšák | e729dc7 | 2017-02-24 17:16:28 +0100 | [diff] [blame] | 1031 | unsigned slc, |
Marek Olšák | e019ea8 | 2017-05-19 15:02:34 +0200 | [diff] [blame] | 1032 | bool can_speculate, |
| 1033 | bool allow_smem) |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 1034 | { |
Marek Olšák | e019ea8 | 2017-05-19 15:02:34 +0200 | [diff] [blame] | 1035 | LLVMValueRef offset = LLVMConstInt(ctx->i32, inst_offset, 0); |
| 1036 | if (voffset) |
| 1037 | offset = LLVMBuildAdd(ctx->builder, offset, voffset, ""); |
| 1038 | if (soffset) |
| 1039 | offset = LLVMBuildAdd(ctx->builder, offset, soffset, ""); |
| 1040 | |
| 1041 | /* TODO: VI and later generations can use SMEM with GLC=1.*/ |
| 1042 | if (allow_smem && !glc && !slc) { |
| 1043 | assert(vindex == NULL); |
| 1044 | |
Dave Airlie | 16dd0eb | 2018-01-30 13:58:05 +1000 | [diff] [blame] | 1045 | LLVMValueRef result[8]; |
Marek Olšák | e019ea8 | 2017-05-19 15:02:34 +0200 | [diff] [blame] | 1046 | |
| 1047 | for (int i = 0; i < num_channels; i++) { |
| 1048 | if (i) { |
| 1049 | offset = LLVMBuildAdd(ctx->builder, offset, |
| 1050 | LLVMConstInt(ctx->i32, 4, 0), ""); |
| 1051 | } |
| 1052 | LLVMValueRef args[2] = {rsrc, offset}; |
| 1053 | result[i] = ac_build_intrinsic(ctx, "llvm.SI.load.const.v4i32", |
| 1054 | ctx->f32, args, 2, |
| 1055 | AC_FUNC_ATTR_READNONE | |
| 1056 | AC_FUNC_ATTR_LEGACY); |
| 1057 | } |
| 1058 | if (num_channels == 1) |
| 1059 | return result[0]; |
| 1060 | |
| 1061 | if (num_channels == 3) |
| 1062 | result[num_channels++] = LLVMGetUndef(ctx->f32); |
| 1063 | return ac_build_gather_values(ctx, result, num_channels); |
| 1064 | } |
| 1065 | |
Samuel Pitoiset | d7c93b5 | 2018-01-10 20:12:09 +0100 | [diff] [blame] | 1066 | return ac_build_buffer_load_common(ctx, rsrc, vindex, offset, |
| 1067 | num_channels, glc, slc, |
| 1068 | can_speculate, false); |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 1069 | } |
| 1070 | |
Marek Olšák | 94811dc | 2017-02-25 23:40:52 +0100 | [diff] [blame] | 1071 | LLVMValueRef ac_build_buffer_load_format(struct ac_llvm_context *ctx, |
| 1072 | LLVMValueRef rsrc, |
| 1073 | LLVMValueRef vindex, |
| 1074 | LLVMValueRef voffset, |
Samuel Pitoiset | 51e14bc | 2018-01-10 20:12:10 +0100 | [diff] [blame] | 1075 | unsigned num_channels, |
Marek Olšák | bac9fa9 | 2018-01-30 19:24:07 +0100 | [diff] [blame] | 1076 | bool glc, |
Marek Olšák | e1942c9 | 2017-05-25 16:13:54 +0200 | [diff] [blame] | 1077 | bool can_speculate) |
Marek Olšák | 94811dc | 2017-02-25 23:40:52 +0100 | [diff] [blame] | 1078 | { |
Samuel Pitoiset | 51e14bc | 2018-01-10 20:12:10 +0100 | [diff] [blame] | 1079 | return ac_build_buffer_load_common(ctx, rsrc, vindex, voffset, |
Marek Olšák | bac9fa9 | 2018-01-30 19:24:07 +0100 | [diff] [blame] | 1080 | num_channels, glc, false, |
Samuel Pitoiset | 51e14bc | 2018-01-10 20:12:10 +0100 | [diff] [blame] | 1081 | can_speculate, true); |
Marek Olšák | 94811dc | 2017-02-25 23:40:52 +0100 | [diff] [blame] | 1082 | } |
| 1083 | |
Bas Nieuwenhuizen | 4503ff7 | 2018-03-28 23:54:40 +0200 | [diff] [blame] | 1084 | LLVMValueRef ac_build_buffer_load_format_gfx9_safe(struct ac_llvm_context *ctx, |
| 1085 | LLVMValueRef rsrc, |
| 1086 | LLVMValueRef vindex, |
| 1087 | LLVMValueRef voffset, |
| 1088 | unsigned num_channels, |
| 1089 | bool glc, |
| 1090 | bool can_speculate) |
| 1091 | { |
| 1092 | LLVMValueRef elem_count = LLVMBuildExtractElement(ctx->builder, rsrc, LLVMConstInt(ctx->i32, 2, 0), ""); |
| 1093 | LLVMValueRef stride = LLVMBuildExtractElement(ctx->builder, rsrc, LLVMConstInt(ctx->i32, 1, 0), ""); |
| 1094 | stride = LLVMBuildLShr(ctx->builder, stride, LLVMConstInt(ctx->i32, 16, 0), ""); |
| 1095 | |
| 1096 | LLVMValueRef new_elem_count = LLVMBuildSelect(ctx->builder, |
| 1097 | LLVMBuildICmp(ctx->builder, LLVMIntUGT, elem_count, stride, ""), |
| 1098 | elem_count, stride, ""); |
| 1099 | |
| 1100 | LLVMValueRef new_rsrc = LLVMBuildInsertElement(ctx->builder, rsrc, new_elem_count, |
| 1101 | LLVMConstInt(ctx->i32, 2, 0), ""); |
| 1102 | |
| 1103 | return ac_build_buffer_load_common(ctx, new_rsrc, vindex, voffset, |
| 1104 | num_channels, glc, false, |
| 1105 | can_speculate, true); |
| 1106 | } |
| 1107 | |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 1108 | /** |
| 1109 | * Set range metadata on an instruction. This can only be used on load and |
| 1110 | * call instructions. If you know an instruction can only produce the values |
| 1111 | * 0, 1, 2, you would do set_range_metadata(value, 0, 3); |
| 1112 | * \p lo is the minimum value inclusive. |
| 1113 | * \p hi is the maximum value exclusive. |
| 1114 | */ |
| 1115 | static void set_range_metadata(struct ac_llvm_context *ctx, |
| 1116 | LLVMValueRef value, unsigned lo, unsigned hi) |
| 1117 | { |
| 1118 | LLVMValueRef range_md, md_args[2]; |
| 1119 | LLVMTypeRef type = LLVMTypeOf(value); |
| 1120 | LLVMContextRef context = LLVMGetTypeContext(type); |
| 1121 | |
| 1122 | md_args[0] = LLVMConstInt(type, lo, false); |
| 1123 | md_args[1] = LLVMConstInt(type, hi, false); |
| 1124 | range_md = LLVMMDNodeInContext(context, md_args, 2); |
| 1125 | LLVMSetMetadata(value, ctx->range_md_kind, range_md); |
| 1126 | } |
| 1127 | |
| 1128 | LLVMValueRef |
| 1129 | ac_get_thread_id(struct ac_llvm_context *ctx) |
| 1130 | { |
| 1131 | LLVMValueRef tid; |
| 1132 | |
Marek Olšák | 7e1faa7 | 2017-03-05 00:15:31 +0100 | [diff] [blame] | 1133 | LLVMValueRef tid_args[2]; |
| 1134 | tid_args[0] = LLVMConstInt(ctx->i32, 0xffffffff, false); |
| 1135 | tid_args[1] = LLVMConstInt(ctx->i32, 0, false); |
| 1136 | tid_args[1] = ac_build_intrinsic(ctx, |
| 1137 | "llvm.amdgcn.mbcnt.lo", ctx->i32, |
| 1138 | tid_args, 2, AC_FUNC_ATTR_READNONE); |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 1139 | |
Marek Olšák | 7e1faa7 | 2017-03-05 00:15:31 +0100 | [diff] [blame] | 1140 | tid = ac_build_intrinsic(ctx, "llvm.amdgcn.mbcnt.hi", |
| 1141 | ctx->i32, tid_args, |
| 1142 | 2, AC_FUNC_ATTR_READNONE); |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 1143 | set_range_metadata(ctx, tid, 0, 64); |
| 1144 | return tid; |
| 1145 | } |
| 1146 | |
| 1147 | /* |
| 1148 | * SI implements derivatives using the local data store (LDS) |
| 1149 | * All writes to the LDS happen in all executing threads at |
| 1150 | * the same time. TID is the Thread ID for the current |
| 1151 | * thread and is a value between 0 and 63, representing |
| 1152 | * the thread's position in the wavefront. |
| 1153 | * |
| 1154 | * For the pixel shader threads are grouped into quads of four pixels. |
| 1155 | * The TIDs of the pixels of a quad are: |
| 1156 | * |
| 1157 | * +------+------+ |
| 1158 | * |4n + 0|4n + 1| |
| 1159 | * +------+------+ |
| 1160 | * |4n + 2|4n + 3| |
| 1161 | * +------+------+ |
| 1162 | * |
| 1163 | * So, masking the TID with 0xfffffffc yields the TID of the top left pixel |
| 1164 | * of the quad, masking with 0xfffffffd yields the TID of the top pixel of |
| 1165 | * the current pixel's column, and masking with 0xfffffffe yields the TID |
| 1166 | * of the left pixel of the current pixel's row. |
| 1167 | * |
| 1168 | * Adding 1 yields the TID of the pixel to the right of the left pixel, and |
| 1169 | * adding 2 yields the TID of the pixel below the top pixel. |
| 1170 | */ |
| 1171 | LLVMValueRef |
Marek Olšák | 7f1446a | 2017-02-26 00:41:37 +0100 | [diff] [blame] | 1172 | ac_build_ddxy(struct ac_llvm_context *ctx, |
Marek Olšák | 7f1446a | 2017-02-26 00:41:37 +0100 | [diff] [blame] | 1173 | uint32_t mask, |
| 1174 | int idx, |
Marek Olšák | 7f1446a | 2017-02-26 00:41:37 +0100 | [diff] [blame] | 1175 | LLVMValueRef val) |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 1176 | { |
Dave Airlie | cb6f16d | 2017-08-01 05:10:49 +0100 | [diff] [blame] | 1177 | LLVMValueRef tl, trbl, args[2]; |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 1178 | LLVMValueRef result; |
| 1179 | |
Nicolai Hähnle | 6772452 | 2017-09-13 14:38:17 +0200 | [diff] [blame] | 1180 | if (ctx->chip_class >= VI) { |
Dave Airlie | cb6f16d | 2017-08-01 05:10:49 +0100 | [diff] [blame] | 1181 | LLVMValueRef thread_id, tl_tid, trbl_tid; |
| 1182 | thread_id = ac_get_thread_id(ctx); |
| 1183 | |
| 1184 | tl_tid = LLVMBuildAnd(ctx->builder, thread_id, |
| 1185 | LLVMConstInt(ctx->i32, mask, false), ""); |
| 1186 | |
| 1187 | trbl_tid = LLVMBuildAdd(ctx->builder, tl_tid, |
| 1188 | LLVMConstInt(ctx->i32, idx, false), ""); |
| 1189 | |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 1190 | args[0] = LLVMBuildMul(ctx->builder, tl_tid, |
| 1191 | LLVMConstInt(ctx->i32, 4, false), ""); |
| 1192 | args[1] = val; |
Marek Olšák | 7f1446a | 2017-02-26 00:41:37 +0100 | [diff] [blame] | 1193 | tl = ac_build_intrinsic(ctx, |
| 1194 | "llvm.amdgcn.ds.bpermute", ctx->i32, |
Marek Olšák | d5d74fe | 2017-02-26 19:00:44 +0100 | [diff] [blame] | 1195 | args, 2, |
| 1196 | AC_FUNC_ATTR_READNONE | |
| 1197 | AC_FUNC_ATTR_CONVERGENT); |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 1198 | |
| 1199 | args[0] = LLVMBuildMul(ctx->builder, trbl_tid, |
| 1200 | LLVMConstInt(ctx->i32, 4, false), ""); |
Marek Olšák | 7f1446a | 2017-02-26 00:41:37 +0100 | [diff] [blame] | 1201 | trbl = ac_build_intrinsic(ctx, |
| 1202 | "llvm.amdgcn.ds.bpermute", ctx->i32, |
Marek Olšák | d5d74fe | 2017-02-26 19:00:44 +0100 | [diff] [blame] | 1203 | args, 2, |
| 1204 | AC_FUNC_ATTR_READNONE | |
| 1205 | AC_FUNC_ATTR_CONVERGENT); |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 1206 | } else { |
Marek Olšák | 94d800b | 2017-10-04 16:59:40 +0200 | [diff] [blame] | 1207 | uint32_t masks[2] = {}; |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 1208 | |
Dave Airlie | cb6f16d | 2017-08-01 05:10:49 +0100 | [diff] [blame] | 1209 | switch (mask) { |
| 1210 | case AC_TID_MASK_TOP_LEFT: |
| 1211 | masks[0] = 0x8000; |
| 1212 | if (idx == 1) |
| 1213 | masks[1] = 0x8055; |
| 1214 | else |
| 1215 | masks[1] = 0x80aa; |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 1216 | |
Dave Airlie | cb6f16d | 2017-08-01 05:10:49 +0100 | [diff] [blame] | 1217 | break; |
| 1218 | case AC_TID_MASK_TOP: |
| 1219 | masks[0] = 0x8044; |
| 1220 | masks[1] = 0x80ee; |
| 1221 | break; |
| 1222 | case AC_TID_MASK_LEFT: |
| 1223 | masks[0] = 0x80a0; |
| 1224 | masks[1] = 0x80f5; |
| 1225 | break; |
Marek Olšák | 94d800b | 2017-10-04 16:59:40 +0200 | [diff] [blame] | 1226 | default: |
| 1227 | assert(0); |
Dave Airlie | cb6f16d | 2017-08-01 05:10:49 +0100 | [diff] [blame] | 1228 | } |
| 1229 | |
| 1230 | args[0] = val; |
| 1231 | args[1] = LLVMConstInt(ctx->i32, masks[0], false); |
| 1232 | |
| 1233 | tl = ac_build_intrinsic(ctx, |
| 1234 | "llvm.amdgcn.ds.swizzle", ctx->i32, |
| 1235 | args, 2, |
| 1236 | AC_FUNC_ATTR_READNONE | |
| 1237 | AC_FUNC_ATTR_CONVERGENT); |
| 1238 | |
| 1239 | args[1] = LLVMConstInt(ctx->i32, masks[1], false); |
| 1240 | trbl = ac_build_intrinsic(ctx, |
| 1241 | "llvm.amdgcn.ds.swizzle", ctx->i32, |
| 1242 | args, 2, |
| 1243 | AC_FUNC_ATTR_READNONE | |
| 1244 | AC_FUNC_ATTR_CONVERGENT); |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 1245 | } |
| 1246 | |
| 1247 | tl = LLVMBuildBitCast(ctx->builder, tl, ctx->f32, ""); |
| 1248 | trbl = LLVMBuildBitCast(ctx->builder, trbl, ctx->f32, ""); |
| 1249 | result = LLVMBuildFSub(ctx->builder, trbl, tl, ""); |
| 1250 | return result; |
| 1251 | } |
Dave Airlie | f32955b | 2017-02-13 22:08:30 +0000 | [diff] [blame] | 1252 | |
| 1253 | void |
Marek Olšák | 7f1446a | 2017-02-26 00:41:37 +0100 | [diff] [blame] | 1254 | ac_build_sendmsg(struct ac_llvm_context *ctx, |
| 1255 | uint32_t msg, |
| 1256 | LLVMValueRef wave_id) |
Dave Airlie | f32955b | 2017-02-13 22:08:30 +0000 | [diff] [blame] | 1257 | { |
| 1258 | LLVMValueRef args[2]; |
Dave Airlie | f32955b | 2017-02-13 22:08:30 +0000 | [diff] [blame] | 1259 | args[0] = LLVMConstInt(ctx->i32, msg, false); |
| 1260 | args[1] = wave_id; |
Marek Olšák | 3bf1e03 | 2018-02-02 19:26:49 +0100 | [diff] [blame] | 1261 | ac_build_intrinsic(ctx, "llvm.amdgcn.s.sendmsg", ctx->voidt, args, 2, 0); |
Dave Airlie | f32955b | 2017-02-13 22:08:30 +0000 | [diff] [blame] | 1262 | } |
Dave Airlie | cae1ff1 | 2017-02-16 03:42:56 +0000 | [diff] [blame] | 1263 | |
| 1264 | LLVMValueRef |
Marek Olšák | 7f1446a | 2017-02-26 00:41:37 +0100 | [diff] [blame] | 1265 | ac_build_imsb(struct ac_llvm_context *ctx, |
| 1266 | LLVMValueRef arg, |
| 1267 | LLVMTypeRef dst_type) |
Dave Airlie | cae1ff1 | 2017-02-16 03:42:56 +0000 | [diff] [blame] | 1268 | { |
Marek Olšák | 3bf1e03 | 2018-02-02 19:26:49 +0100 | [diff] [blame] | 1269 | LLVMValueRef msb = ac_build_intrinsic(ctx, "llvm.amdgcn.sffbh.i32", |
Marek Olšák | 7f1446a | 2017-02-26 00:41:37 +0100 | [diff] [blame] | 1270 | dst_type, &arg, 1, |
| 1271 | AC_FUNC_ATTR_READNONE); |
Dave Airlie | cae1ff1 | 2017-02-16 03:42:56 +0000 | [diff] [blame] | 1272 | |
| 1273 | /* The HW returns the last bit index from MSB, but NIR/TGSI wants |
| 1274 | * the index from LSB. Invert it by doing "31 - msb". */ |
| 1275 | msb = LLVMBuildSub(ctx->builder, LLVMConstInt(ctx->i32, 31, false), |
| 1276 | msb, ""); |
| 1277 | |
| 1278 | LLVMValueRef all_ones = LLVMConstInt(ctx->i32, -1, true); |
| 1279 | LLVMValueRef cond = LLVMBuildOr(ctx->builder, |
| 1280 | LLVMBuildICmp(ctx->builder, LLVMIntEQ, |
| 1281 | arg, LLVMConstInt(ctx->i32, 0, 0), ""), |
| 1282 | LLVMBuildICmp(ctx->builder, LLVMIntEQ, |
| 1283 | arg, all_ones, ""), ""); |
| 1284 | |
| 1285 | return LLVMBuildSelect(ctx->builder, cond, all_ones, msb, ""); |
| 1286 | } |
Dave Airlie | 0ec66b9 | 2017-02-16 03:53:27 +0000 | [diff] [blame] | 1287 | |
| 1288 | LLVMValueRef |
Marek Olšák | 7f1446a | 2017-02-26 00:41:37 +0100 | [diff] [blame] | 1289 | ac_build_umsb(struct ac_llvm_context *ctx, |
| 1290 | LLVMValueRef arg, |
| 1291 | LLVMTypeRef dst_type) |
Dave Airlie | 0ec66b9 | 2017-02-16 03:53:27 +0000 | [diff] [blame] | 1292 | { |
Daniel Schürmann | d19f20e | 2018-02-28 20:26:03 +0100 | [diff] [blame] | 1293 | const char *intrin_name; |
| 1294 | LLVMTypeRef type; |
| 1295 | LLVMValueRef highest_bit; |
| 1296 | LLVMValueRef zero; |
| 1297 | |
| 1298 | if (ac_get_elem_bits(ctx, LLVMTypeOf(arg)) == 64) { |
| 1299 | intrin_name = "llvm.ctlz.i64"; |
| 1300 | type = ctx->i64; |
| 1301 | highest_bit = LLVMConstInt(ctx->i64, 63, false); |
| 1302 | zero = ctx->i64_0; |
| 1303 | } else { |
| 1304 | intrin_name = "llvm.ctlz.i32"; |
| 1305 | type = ctx->i32; |
| 1306 | highest_bit = LLVMConstInt(ctx->i32, 31, false); |
| 1307 | zero = ctx->i32_0; |
| 1308 | } |
| 1309 | |
| 1310 | LLVMValueRef params[2] = { |
Dave Airlie | 0ec66b9 | 2017-02-16 03:53:27 +0000 | [diff] [blame] | 1311 | arg, |
Dave Airlie | a76b6c2 | 2017-10-26 15:20:15 +1000 | [diff] [blame] | 1312 | ctx->i1true, |
Dave Airlie | 0ec66b9 | 2017-02-16 03:53:27 +0000 | [diff] [blame] | 1313 | }; |
Daniel Schürmann | d19f20e | 2018-02-28 20:26:03 +0100 | [diff] [blame] | 1314 | |
| 1315 | LLVMValueRef msb = ac_build_intrinsic(ctx, intrin_name, type, |
| 1316 | params, 2, |
Marek Olšák | 7f1446a | 2017-02-26 00:41:37 +0100 | [diff] [blame] | 1317 | AC_FUNC_ATTR_READNONE); |
Dave Airlie | 0ec66b9 | 2017-02-16 03:53:27 +0000 | [diff] [blame] | 1318 | |
| 1319 | /* The HW returns the last bit index from MSB, but TGSI/NIR wants |
| 1320 | * the index from LSB. Invert it by doing "31 - msb". */ |
Daniel Schürmann | d19f20e | 2018-02-28 20:26:03 +0100 | [diff] [blame] | 1321 | msb = LLVMBuildSub(ctx->builder, highest_bit, msb, ""); |
| 1322 | msb = LLVMBuildTruncOrBitCast(ctx->builder, msb, ctx->i32, ""); |
Dave Airlie | 0ec66b9 | 2017-02-16 03:53:27 +0000 | [diff] [blame] | 1323 | |
| 1324 | /* check for zero */ |
| 1325 | return LLVMBuildSelect(ctx->builder, |
Daniel Schürmann | d19f20e | 2018-02-28 20:26:03 +0100 | [diff] [blame] | 1326 | LLVMBuildICmp(ctx->builder, LLVMIntEQ, arg, zero, ""), |
Dave Airlie | 0ec66b9 | 2017-02-16 03:53:27 +0000 | [diff] [blame] | 1327 | LLVMConstInt(ctx->i32, -1, true), msb, ""); |
| 1328 | } |
Marek Olšák | 660b55e | 2017-02-16 22:41:16 +0100 | [diff] [blame] | 1329 | |
Marek Olšák | a140aeb | 2018-01-02 03:59:43 +0100 | [diff] [blame] | 1330 | LLVMValueRef ac_build_fmin(struct ac_llvm_context *ctx, LLVMValueRef a, |
| 1331 | LLVMValueRef b) |
| 1332 | { |
| 1333 | LLVMValueRef args[2] = {a, b}; |
| 1334 | return ac_build_intrinsic(ctx, "llvm.minnum.f32", ctx->f32, args, 2, |
| 1335 | AC_FUNC_ATTR_READNONE); |
| 1336 | } |
| 1337 | |
| 1338 | LLVMValueRef ac_build_fmax(struct ac_llvm_context *ctx, LLVMValueRef a, |
| 1339 | LLVMValueRef b) |
| 1340 | { |
| 1341 | LLVMValueRef args[2] = {a, b}; |
| 1342 | return ac_build_intrinsic(ctx, "llvm.maxnum.f32", ctx->f32, args, 2, |
| 1343 | AC_FUNC_ATTR_READNONE); |
| 1344 | } |
| 1345 | |
Marek Olšák | 847d0a3 | 2018-01-02 04:34:53 +0100 | [diff] [blame] | 1346 | LLVMValueRef ac_build_imin(struct ac_llvm_context *ctx, LLVMValueRef a, |
| 1347 | LLVMValueRef b) |
| 1348 | { |
| 1349 | LLVMValueRef cmp = LLVMBuildICmp(ctx->builder, LLVMIntSLE, a, b, ""); |
| 1350 | return LLVMBuildSelect(ctx->builder, cmp, a, b, ""); |
| 1351 | } |
| 1352 | |
| 1353 | LLVMValueRef ac_build_imax(struct ac_llvm_context *ctx, LLVMValueRef a, |
| 1354 | LLVMValueRef b) |
| 1355 | { |
| 1356 | LLVMValueRef cmp = LLVMBuildICmp(ctx->builder, LLVMIntSGT, a, b, ""); |
| 1357 | return LLVMBuildSelect(ctx->builder, cmp, a, b, ""); |
| 1358 | } |
| 1359 | |
Nicolai Hähnle | a69afb6 | 2017-06-25 17:56:37 +0200 | [diff] [blame] | 1360 | LLVMValueRef ac_build_umin(struct ac_llvm_context *ctx, LLVMValueRef a, |
| 1361 | LLVMValueRef b) |
| 1362 | { |
| 1363 | LLVMValueRef cmp = LLVMBuildICmp(ctx->builder, LLVMIntULE, a, b, ""); |
| 1364 | return LLVMBuildSelect(ctx->builder, cmp, a, b, ""); |
| 1365 | } |
| 1366 | |
Marek Olšák | 7f1446a | 2017-02-26 00:41:37 +0100 | [diff] [blame] | 1367 | LLVMValueRef ac_build_clamp(struct ac_llvm_context *ctx, LLVMValueRef value) |
Marek Olšák | 660b55e | 2017-02-16 22:41:16 +0100 | [diff] [blame] | 1368 | { |
Marek Olšák | 675ef9c | 2017-02-16 22:52:53 +0100 | [diff] [blame] | 1369 | if (HAVE_LLVM >= 0x0500) { |
Marek Olšák | a140aeb | 2018-01-02 03:59:43 +0100 | [diff] [blame] | 1370 | return ac_build_fmin(ctx, ac_build_fmax(ctx, value, ctx->f32_0), |
| 1371 | ctx->f32_1); |
Marek Olšák | 675ef9c | 2017-02-16 22:52:53 +0100 | [diff] [blame] | 1372 | } |
| 1373 | |
Marek Olšák | 660b55e | 2017-02-16 22:41:16 +0100 | [diff] [blame] | 1374 | LLVMValueRef args[3] = { |
| 1375 | value, |
| 1376 | LLVMConstReal(ctx->f32, 0), |
| 1377 | LLVMConstReal(ctx->f32, 1), |
| 1378 | }; |
| 1379 | |
Marek Olšák | 7e1faa7 | 2017-03-05 00:15:31 +0100 | [diff] [blame] | 1380 | return ac_build_intrinsic(ctx, "llvm.AMDGPU.clamp.", ctx->f32, args, 3, |
Marek Olšák | 7f1446a | 2017-02-26 00:41:37 +0100 | [diff] [blame] | 1381 | AC_FUNC_ATTR_READNONE | |
| 1382 | AC_FUNC_ATTR_LEGACY); |
Marek Olšák | 660b55e | 2017-02-16 22:41:16 +0100 | [diff] [blame] | 1383 | } |
Marek Olšák | 369f4a8 | 2017-02-23 02:06:40 +0100 | [diff] [blame] | 1384 | |
Marek Olšák | 7f1446a | 2017-02-26 00:41:37 +0100 | [diff] [blame] | 1385 | void ac_build_export(struct ac_llvm_context *ctx, struct ac_export_args *a) |
Marek Olšák | 369f4a8 | 2017-02-23 02:06:40 +0100 | [diff] [blame] | 1386 | { |
| 1387 | LLVMValueRef args[9]; |
| 1388 | |
Marek Olšák | 2b3ebe3 | 2017-02-23 02:15:54 +0100 | [diff] [blame] | 1389 | if (HAVE_LLVM >= 0x0500) { |
| 1390 | args[0] = LLVMConstInt(ctx->i32, a->target, 0); |
| 1391 | args[1] = LLVMConstInt(ctx->i32, a->enabled_channels, 0); |
| 1392 | |
| 1393 | if (a->compr) { |
| 1394 | LLVMTypeRef i16 = LLVMInt16TypeInContext(ctx->context); |
| 1395 | LLVMTypeRef v2i16 = LLVMVectorType(i16, 2); |
| 1396 | |
| 1397 | args[2] = LLVMBuildBitCast(ctx->builder, a->out[0], |
| 1398 | v2i16, ""); |
| 1399 | args[3] = LLVMBuildBitCast(ctx->builder, a->out[1], |
| 1400 | v2i16, ""); |
| 1401 | args[4] = LLVMConstInt(ctx->i1, a->done, 0); |
| 1402 | args[5] = LLVMConstInt(ctx->i1, a->valid_mask, 0); |
| 1403 | |
Marek Olšák | 7f1446a | 2017-02-26 00:41:37 +0100 | [diff] [blame] | 1404 | ac_build_intrinsic(ctx, "llvm.amdgcn.exp.compr.v2i16", |
| 1405 | ctx->voidt, args, 6, 0); |
Marek Olšák | 2b3ebe3 | 2017-02-23 02:15:54 +0100 | [diff] [blame] | 1406 | } else { |
| 1407 | args[2] = a->out[0]; |
| 1408 | args[3] = a->out[1]; |
| 1409 | args[4] = a->out[2]; |
| 1410 | args[5] = a->out[3]; |
| 1411 | args[6] = LLVMConstInt(ctx->i1, a->done, 0); |
| 1412 | args[7] = LLVMConstInt(ctx->i1, a->valid_mask, 0); |
| 1413 | |
Marek Olšák | 7f1446a | 2017-02-26 00:41:37 +0100 | [diff] [blame] | 1414 | ac_build_intrinsic(ctx, "llvm.amdgcn.exp.f32", |
| 1415 | ctx->voidt, args, 8, 0); |
Marek Olšák | 2b3ebe3 | 2017-02-23 02:15:54 +0100 | [diff] [blame] | 1416 | } |
| 1417 | return; |
| 1418 | } |
| 1419 | |
Marek Olšák | 369f4a8 | 2017-02-23 02:06:40 +0100 | [diff] [blame] | 1420 | args[0] = LLVMConstInt(ctx->i32, a->enabled_channels, 0); |
| 1421 | args[1] = LLVMConstInt(ctx->i32, a->valid_mask, 0); |
| 1422 | args[2] = LLVMConstInt(ctx->i32, a->done, 0); |
| 1423 | args[3] = LLVMConstInt(ctx->i32, a->target, 0); |
| 1424 | args[4] = LLVMConstInt(ctx->i32, a->compr, 0); |
| 1425 | memcpy(args + 5, a->out, sizeof(a->out[0]) * 4); |
| 1426 | |
Marek Olšák | 7f1446a | 2017-02-26 00:41:37 +0100 | [diff] [blame] | 1427 | ac_build_intrinsic(ctx, "llvm.SI.export", ctx->voidt, args, 9, |
| 1428 | AC_FUNC_ATTR_LEGACY); |
Marek Olšák | 369f4a8 | 2017-02-23 02:06:40 +0100 | [diff] [blame] | 1429 | } |
Marek Olšák | ad18d7f | 2017-02-23 23:00:19 +0100 | [diff] [blame] | 1430 | |
Samuel Pitoiset | bd9f7b7 | 2018-02-07 19:09:12 +0100 | [diff] [blame] | 1431 | void ac_build_export_null(struct ac_llvm_context *ctx) |
| 1432 | { |
| 1433 | struct ac_export_args args; |
| 1434 | |
| 1435 | args.enabled_channels = 0x0; /* enabled channels */ |
| 1436 | args.valid_mask = 1; /* whether the EXEC mask is valid */ |
| 1437 | args.done = 1; /* DONE bit */ |
| 1438 | args.target = V_008DFC_SQ_EXP_NULL; |
| 1439 | args.compr = 0; /* COMPR flag (0 = 32-bit export) */ |
| 1440 | args.out[0] = LLVMGetUndef(ctx->f32); /* R */ |
| 1441 | args.out[1] = LLVMGetUndef(ctx->f32); /* G */ |
| 1442 | args.out[2] = LLVMGetUndef(ctx->f32); /* B */ |
| 1443 | args.out[3] = LLVMGetUndef(ctx->f32); /* A */ |
| 1444 | |
| 1445 | ac_build_export(ctx, &args); |
| 1446 | } |
| 1447 | |
Marek Olšák | 7f1446a | 2017-02-26 00:41:37 +0100 | [diff] [blame] | 1448 | LLVMValueRef ac_build_image_opcode(struct ac_llvm_context *ctx, |
| 1449 | struct ac_image_args *a) |
Marek Olšák | ad18d7f | 2017-02-23 23:00:19 +0100 | [diff] [blame] | 1450 | { |
Marek Olšák | ad18d7f | 2017-02-23 23:00:19 +0100 | [diff] [blame] | 1451 | LLVMValueRef args[11]; |
| 1452 | unsigned num_args = 0; |
Eric Anholt | 34c04c7 | 2017-10-17 13:45:09 -0700 | [diff] [blame] | 1453 | const char *name = NULL; |
Marek Olšák | ad18d7f | 2017-02-23 23:00:19 +0100 | [diff] [blame] | 1454 | char intr_name[128], type[64]; |
| 1455 | |
Marek Olšák | 3bf1e03 | 2018-02-02 19:26:49 +0100 | [diff] [blame] | 1456 | bool sample = a->opcode == ac_image_sample || |
| 1457 | a->opcode == ac_image_gather4 || |
| 1458 | a->opcode == ac_image_get_lod; |
Marek Olšák | 4b2e5b9 | 2017-02-23 23:37:59 +0100 | [diff] [blame] | 1459 | |
Marek Olšák | 3bf1e03 | 2018-02-02 19:26:49 +0100 | [diff] [blame] | 1460 | if (sample) |
| 1461 | args[num_args++] = ac_to_float(ctx, a->addr); |
| 1462 | else |
| 1463 | args[num_args++] = a->addr; |
Marek Olšák | 4b2e5b9 | 2017-02-23 23:37:59 +0100 | [diff] [blame] | 1464 | |
Marek Olšák | ad18d7f | 2017-02-23 23:00:19 +0100 | [diff] [blame] | 1465 | args[num_args++] = a->resource; |
Marek Olšák | 3bf1e03 | 2018-02-02 19:26:49 +0100 | [diff] [blame] | 1466 | if (sample) |
Marek Olšák | ad18d7f | 2017-02-23 23:00:19 +0100 | [diff] [blame] | 1467 | args[num_args++] = a->sampler; |
Marek Olšák | ad18d7f | 2017-02-23 23:00:19 +0100 | [diff] [blame] | 1468 | args[num_args++] = LLVMConstInt(ctx->i32, a->dmask, 0); |
Marek Olšák | 3bf1e03 | 2018-02-02 19:26:49 +0100 | [diff] [blame] | 1469 | if (sample) |
| 1470 | args[num_args++] = LLVMConstInt(ctx->i1, a->unorm, 0); |
| 1471 | args[num_args++] = ctx->i1false; /* glc */ |
| 1472 | args[num_args++] = ctx->i1false; /* slc */ |
| 1473 | args[num_args++] = ctx->i1false; /* lwe */ |
| 1474 | args[num_args++] = LLVMConstInt(ctx->i1, a->da, 0); |
Marek Olšák | ad18d7f | 2017-02-23 23:00:19 +0100 | [diff] [blame] | 1475 | |
| 1476 | switch (a->opcode) { |
| 1477 | case ac_image_sample: |
Marek Olšák | 3bf1e03 | 2018-02-02 19:26:49 +0100 | [diff] [blame] | 1478 | name = "llvm.amdgcn.image.sample"; |
Marek Olšák | ad18d7f | 2017-02-23 23:00:19 +0100 | [diff] [blame] | 1479 | break; |
| 1480 | case ac_image_gather4: |
Marek Olšák | 3bf1e03 | 2018-02-02 19:26:49 +0100 | [diff] [blame] | 1481 | name = "llvm.amdgcn.image.gather4"; |
Marek Olšák | ad18d7f | 2017-02-23 23:00:19 +0100 | [diff] [blame] | 1482 | break; |
| 1483 | case ac_image_load: |
Marek Olšák | 3bf1e03 | 2018-02-02 19:26:49 +0100 | [diff] [blame] | 1484 | name = "llvm.amdgcn.image.load"; |
Marek Olšák | ad18d7f | 2017-02-23 23:00:19 +0100 | [diff] [blame] | 1485 | break; |
| 1486 | case ac_image_load_mip: |
Marek Olšák | 3bf1e03 | 2018-02-02 19:26:49 +0100 | [diff] [blame] | 1487 | name = "llvm.amdgcn.image.load.mip"; |
Marek Olšák | ad18d7f | 2017-02-23 23:00:19 +0100 | [diff] [blame] | 1488 | break; |
| 1489 | case ac_image_get_lod: |
Marek Olšák | 3bf1e03 | 2018-02-02 19:26:49 +0100 | [diff] [blame] | 1490 | name = "llvm.amdgcn.image.getlod"; |
Marek Olšák | ad18d7f | 2017-02-23 23:00:19 +0100 | [diff] [blame] | 1491 | break; |
| 1492 | case ac_image_get_resinfo: |
Marek Olšák | 3bf1e03 | 2018-02-02 19:26:49 +0100 | [diff] [blame] | 1493 | name = "llvm.amdgcn.image.getresinfo"; |
Marek Olšák | ad18d7f | 2017-02-23 23:00:19 +0100 | [diff] [blame] | 1494 | break; |
Marek Olšák | 3bf1e03 | 2018-02-02 19:26:49 +0100 | [diff] [blame] | 1495 | default: |
| 1496 | unreachable("invalid image opcode"); |
Marek Olšák | ad18d7f | 2017-02-23 23:00:19 +0100 | [diff] [blame] | 1497 | } |
| 1498 | |
Marek Olšák | 3bf1e03 | 2018-02-02 19:26:49 +0100 | [diff] [blame] | 1499 | ac_build_type_name_for_intr(LLVMTypeOf(args[0]), type, |
| 1500 | sizeof(type)); |
| 1501 | |
| 1502 | snprintf(intr_name, sizeof(intr_name), "%s%s%s%s.v4f32.%s.v8i32", |
Marek Olšák | ad18d7f | 2017-02-23 23:00:19 +0100 | [diff] [blame] | 1503 | name, |
| 1504 | a->compare ? ".c" : "", |
| 1505 | a->bias ? ".b" : |
| 1506 | a->lod ? ".l" : |
| 1507 | a->deriv ? ".d" : |
| 1508 | a->level_zero ? ".lz" : "", |
| 1509 | a->offset ? ".o" : "", |
| 1510 | type); |
| 1511 | |
Marek Olšák | 3bf1e03 | 2018-02-02 19:26:49 +0100 | [diff] [blame] | 1512 | LLVMValueRef result = |
| 1513 | ac_build_intrinsic(ctx, intr_name, |
| 1514 | ctx->v4f32, args, num_args, |
| 1515 | AC_FUNC_ATTR_READNONE); |
| 1516 | if (!sample) { |
| 1517 | result = LLVMBuildBitCast(ctx->builder, result, |
| 1518 | ctx->v4i32, ""); |
| 1519 | } |
| 1520 | return result; |
Marek Olšák | ad18d7f | 2017-02-23 23:00:19 +0100 | [diff] [blame] | 1521 | } |
Marek Olšák | 653ac0b | 2017-02-24 16:38:25 +0100 | [diff] [blame] | 1522 | |
Marek Olšák | 7f1446a | 2017-02-26 00:41:37 +0100 | [diff] [blame] | 1523 | LLVMValueRef ac_build_cvt_pkrtz_f16(struct ac_llvm_context *ctx, |
| 1524 | LLVMValueRef args[2]) |
Marek Olšák | 653ac0b | 2017-02-24 16:38:25 +0100 | [diff] [blame] | 1525 | { |
| 1526 | if (HAVE_LLVM >= 0x0500) { |
| 1527 | LLVMTypeRef v2f16 = |
| 1528 | LLVMVectorType(LLVMHalfTypeInContext(ctx->context), 2); |
| 1529 | LLVMValueRef res = |
Marek Olšák | 7f1446a | 2017-02-26 00:41:37 +0100 | [diff] [blame] | 1530 | ac_build_intrinsic(ctx, "llvm.amdgcn.cvt.pkrtz", |
| 1531 | v2f16, args, 2, |
| 1532 | AC_FUNC_ATTR_READNONE); |
Marek Olšák | 653ac0b | 2017-02-24 16:38:25 +0100 | [diff] [blame] | 1533 | return LLVMBuildBitCast(ctx->builder, res, ctx->i32, ""); |
| 1534 | } |
| 1535 | |
Marek Olšák | 7f1446a | 2017-02-26 00:41:37 +0100 | [diff] [blame] | 1536 | return ac_build_intrinsic(ctx, "llvm.SI.packf16", ctx->i32, args, 2, |
| 1537 | AC_FUNC_ATTR_READNONE | |
| 1538 | AC_FUNC_ATTR_LEGACY); |
Marek Olšák | 653ac0b | 2017-02-24 16:38:25 +0100 | [diff] [blame] | 1539 | } |
Marek Olšák | 9c09592 | 2017-02-24 22:44:18 +0100 | [diff] [blame] | 1540 | |
Marek Olšák | 847d0a3 | 2018-01-02 04:34:53 +0100 | [diff] [blame] | 1541 | /* Upper 16 bits must be zero. */ |
| 1542 | static LLVMValueRef ac_llvm_pack_two_int16(struct ac_llvm_context *ctx, |
| 1543 | LLVMValueRef val[2]) |
| 1544 | { |
| 1545 | return LLVMBuildOr(ctx->builder, val[0], |
| 1546 | LLVMBuildShl(ctx->builder, val[1], |
| 1547 | LLVMConstInt(ctx->i32, 16, 0), |
| 1548 | ""), ""); |
| 1549 | } |
| 1550 | |
| 1551 | /* Upper 16 bits are ignored and will be dropped. */ |
| 1552 | static LLVMValueRef ac_llvm_pack_two_int32_as_int16(struct ac_llvm_context *ctx, |
| 1553 | LLVMValueRef val[2]) |
| 1554 | { |
| 1555 | LLVMValueRef v[2] = { |
| 1556 | LLVMBuildAnd(ctx->builder, val[0], |
| 1557 | LLVMConstInt(ctx->i32, 0xffff, 0), ""), |
| 1558 | val[1], |
| 1559 | }; |
| 1560 | return ac_llvm_pack_two_int16(ctx, v); |
| 1561 | } |
| 1562 | |
| 1563 | LLVMValueRef ac_build_cvt_pknorm_i16(struct ac_llvm_context *ctx, |
| 1564 | LLVMValueRef args[2]) |
| 1565 | { |
| 1566 | if (HAVE_LLVM >= 0x0600) { |
| 1567 | LLVMValueRef res = |
| 1568 | ac_build_intrinsic(ctx, "llvm.amdgcn.cvt.pknorm.i16", |
| 1569 | ctx->v2i16, args, 2, |
| 1570 | AC_FUNC_ATTR_READNONE); |
| 1571 | return LLVMBuildBitCast(ctx->builder, res, ctx->i32, ""); |
| 1572 | } |
| 1573 | |
| 1574 | LLVMValueRef val[2]; |
| 1575 | |
| 1576 | for (int chan = 0; chan < 2; chan++) { |
| 1577 | /* Clamp between [-1, 1]. */ |
| 1578 | val[chan] = ac_build_fmin(ctx, args[chan], ctx->f32_1); |
| 1579 | val[chan] = ac_build_fmax(ctx, val[chan], LLVMConstReal(ctx->f32, -1)); |
| 1580 | /* Convert to a signed integer in [-32767, 32767]. */ |
| 1581 | val[chan] = LLVMBuildFMul(ctx->builder, val[chan], |
| 1582 | LLVMConstReal(ctx->f32, 32767), ""); |
| 1583 | /* If positive, add 0.5, else add -0.5. */ |
| 1584 | val[chan] = LLVMBuildFAdd(ctx->builder, val[chan], |
| 1585 | LLVMBuildSelect(ctx->builder, |
| 1586 | LLVMBuildFCmp(ctx->builder, LLVMRealOGE, |
| 1587 | val[chan], ctx->f32_0, ""), |
| 1588 | LLVMConstReal(ctx->f32, 0.5), |
| 1589 | LLVMConstReal(ctx->f32, -0.5), ""), ""); |
| 1590 | val[chan] = LLVMBuildFPToSI(ctx->builder, val[chan], ctx->i32, ""); |
| 1591 | } |
| 1592 | return ac_llvm_pack_two_int32_as_int16(ctx, val); |
| 1593 | } |
| 1594 | |
| 1595 | LLVMValueRef ac_build_cvt_pknorm_u16(struct ac_llvm_context *ctx, |
| 1596 | LLVMValueRef args[2]) |
| 1597 | { |
| 1598 | if (HAVE_LLVM >= 0x0600) { |
| 1599 | LLVMValueRef res = |
| 1600 | ac_build_intrinsic(ctx, "llvm.amdgcn.cvt.pknorm.u16", |
| 1601 | ctx->v2i16, args, 2, |
| 1602 | AC_FUNC_ATTR_READNONE); |
| 1603 | return LLVMBuildBitCast(ctx->builder, res, ctx->i32, ""); |
| 1604 | } |
| 1605 | |
| 1606 | LLVMValueRef val[2]; |
| 1607 | |
| 1608 | for (int chan = 0; chan < 2; chan++) { |
| 1609 | val[chan] = ac_build_clamp(ctx, args[chan]); |
| 1610 | val[chan] = LLVMBuildFMul(ctx->builder, val[chan], |
| 1611 | LLVMConstReal(ctx->f32, 65535), ""); |
| 1612 | val[chan] = LLVMBuildFAdd(ctx->builder, val[chan], |
| 1613 | LLVMConstReal(ctx->f32, 0.5), ""); |
| 1614 | val[chan] = LLVMBuildFPToUI(ctx->builder, val[chan], |
| 1615 | ctx->i32, ""); |
| 1616 | } |
| 1617 | return ac_llvm_pack_two_int32_as_int16(ctx, val); |
| 1618 | } |
| 1619 | |
| 1620 | /* The 8-bit and 10-bit clamping is for HW workarounds. */ |
| 1621 | LLVMValueRef ac_build_cvt_pk_i16(struct ac_llvm_context *ctx, |
| 1622 | LLVMValueRef args[2], unsigned bits, bool hi) |
| 1623 | { |
| 1624 | assert(bits == 8 || bits == 10 || bits == 16); |
| 1625 | |
| 1626 | LLVMValueRef max_rgb = LLVMConstInt(ctx->i32, |
| 1627 | bits == 8 ? 127 : bits == 10 ? 511 : 32767, 0); |
| 1628 | LLVMValueRef min_rgb = LLVMConstInt(ctx->i32, |
| 1629 | bits == 8 ? -128 : bits == 10 ? -512 : -32768, 0); |
| 1630 | LLVMValueRef max_alpha = |
| 1631 | bits != 10 ? max_rgb : ctx->i32_1; |
| 1632 | LLVMValueRef min_alpha = |
| 1633 | bits != 10 ? min_rgb : LLVMConstInt(ctx->i32, -2, 0); |
| 1634 | bool has_intrinsic = HAVE_LLVM >= 0x0600; |
| 1635 | |
| 1636 | /* Clamp. */ |
| 1637 | if (!has_intrinsic || bits != 16) { |
| 1638 | for (int i = 0; i < 2; i++) { |
| 1639 | bool alpha = hi && i == 1; |
| 1640 | args[i] = ac_build_imin(ctx, args[i], |
| 1641 | alpha ? max_alpha : max_rgb); |
| 1642 | args[i] = ac_build_imax(ctx, args[i], |
| 1643 | alpha ? min_alpha : min_rgb); |
| 1644 | } |
| 1645 | } |
| 1646 | |
| 1647 | if (has_intrinsic) { |
| 1648 | LLVMValueRef res = |
| 1649 | ac_build_intrinsic(ctx, "llvm.amdgcn.cvt.pk.i16", |
| 1650 | ctx->v2i16, args, 2, |
| 1651 | AC_FUNC_ATTR_READNONE); |
| 1652 | return LLVMBuildBitCast(ctx->builder, res, ctx->i32, ""); |
| 1653 | } |
| 1654 | |
| 1655 | return ac_llvm_pack_two_int32_as_int16(ctx, args); |
| 1656 | } |
| 1657 | |
| 1658 | /* The 8-bit and 10-bit clamping is for HW workarounds. */ |
| 1659 | LLVMValueRef ac_build_cvt_pk_u16(struct ac_llvm_context *ctx, |
| 1660 | LLVMValueRef args[2], unsigned bits, bool hi) |
| 1661 | { |
| 1662 | assert(bits == 8 || bits == 10 || bits == 16); |
| 1663 | |
| 1664 | LLVMValueRef max_rgb = LLVMConstInt(ctx->i32, |
| 1665 | bits == 8 ? 255 : bits == 10 ? 1023 : 65535, 0); |
| 1666 | LLVMValueRef max_alpha = |
| 1667 | bits != 10 ? max_rgb : LLVMConstInt(ctx->i32, 3, 0); |
| 1668 | bool has_intrinsic = HAVE_LLVM >= 0x0600; |
| 1669 | |
| 1670 | /* Clamp. */ |
| 1671 | if (!has_intrinsic || bits != 16) { |
| 1672 | for (int i = 0; i < 2; i++) { |
| 1673 | bool alpha = hi && i == 1; |
| 1674 | args[i] = ac_build_umin(ctx, args[i], |
| 1675 | alpha ? max_alpha : max_rgb); |
| 1676 | } |
| 1677 | } |
| 1678 | |
| 1679 | if (has_intrinsic) { |
| 1680 | LLVMValueRef res = |
| 1681 | ac_build_intrinsic(ctx, "llvm.amdgcn.cvt.pk.u16", |
| 1682 | ctx->v2i16, args, 2, |
| 1683 | AC_FUNC_ATTR_READNONE); |
| 1684 | return LLVMBuildBitCast(ctx->builder, res, ctx->i32, ""); |
| 1685 | } |
| 1686 | |
| 1687 | return ac_llvm_pack_two_int16(ctx, args); |
| 1688 | } |
| 1689 | |
Marek Olšák | 2a414c3 | 2017-10-04 05:07:50 +0200 | [diff] [blame] | 1690 | LLVMValueRef ac_build_wqm_vote(struct ac_llvm_context *ctx, LLVMValueRef i1) |
| 1691 | { |
| 1692 | assert(HAVE_LLVM >= 0x0600); |
| 1693 | return ac_build_intrinsic(ctx, "llvm.amdgcn.wqm.vote", ctx->i1, |
| 1694 | &i1, 1, AC_FUNC_ATTR_READNONE); |
| 1695 | } |
| 1696 | |
Marek Olšák | 1ff9e27 | 2017-10-04 04:51:39 +0200 | [diff] [blame] | 1697 | void ac_build_kill_if_false(struct ac_llvm_context *ctx, LLVMValueRef i1) |
Marek Olšák | 9c09592 | 2017-02-24 22:44:18 +0100 | [diff] [blame] | 1698 | { |
Marek Olšák | 478afbe | 2017-10-04 05:06:57 +0200 | [diff] [blame] | 1699 | if (HAVE_LLVM >= 0x0600) { |
| 1700 | ac_build_intrinsic(ctx, "llvm.amdgcn.kill", ctx->voidt, |
| 1701 | &i1, 1, 0); |
| 1702 | return; |
| 1703 | } |
| 1704 | |
Marek Olšák | 1ff9e27 | 2017-10-04 04:51:39 +0200 | [diff] [blame] | 1705 | LLVMValueRef value = LLVMBuildSelect(ctx->builder, i1, |
| 1706 | LLVMConstReal(ctx->f32, 1), |
| 1707 | LLVMConstReal(ctx->f32, -1), ""); |
| 1708 | ac_build_intrinsic(ctx, "llvm.AMDGPU.kill", ctx->voidt, |
| 1709 | &value, 1, AC_FUNC_ATTR_LEGACY); |
Marek Olšák | 9c09592 | 2017-02-24 22:44:18 +0100 | [diff] [blame] | 1710 | } |
Marek Olšák | d4324dd | 2017-02-24 23:06:31 +0100 | [diff] [blame] | 1711 | |
Marek Olšák | 7f1446a | 2017-02-26 00:41:37 +0100 | [diff] [blame] | 1712 | LLVMValueRef ac_build_bfe(struct ac_llvm_context *ctx, LLVMValueRef input, |
| 1713 | LLVMValueRef offset, LLVMValueRef width, |
| 1714 | bool is_signed) |
Marek Olšák | d4324dd | 2017-02-24 23:06:31 +0100 | [diff] [blame] | 1715 | { |
| 1716 | LLVMValueRef args[] = { |
| 1717 | input, |
| 1718 | offset, |
| 1719 | width, |
| 1720 | }; |
| 1721 | |
| 1722 | if (HAVE_LLVM >= 0x0500) { |
Marek Olšák | 7f1446a | 2017-02-26 00:41:37 +0100 | [diff] [blame] | 1723 | return ac_build_intrinsic(ctx, |
| 1724 | is_signed ? "llvm.amdgcn.sbfe.i32" : |
| 1725 | "llvm.amdgcn.ubfe.i32", |
| 1726 | ctx->i32, args, 3, |
| 1727 | AC_FUNC_ATTR_READNONE); |
Marek Olšák | d4324dd | 2017-02-24 23:06:31 +0100 | [diff] [blame] | 1728 | } |
| 1729 | |
Marek Olšák | 7f1446a | 2017-02-26 00:41:37 +0100 | [diff] [blame] | 1730 | return ac_build_intrinsic(ctx, |
| 1731 | is_signed ? "llvm.AMDGPU.bfe.i32" : |
| 1732 | "llvm.AMDGPU.bfe.u32", |
| 1733 | ctx->i32, args, 3, |
| 1734 | AC_FUNC_ATTR_READNONE | |
| 1735 | AC_FUNC_ATTR_LEGACY); |
Marek Olšák | d4324dd | 2017-02-24 23:06:31 +0100 | [diff] [blame] | 1736 | } |
Dave Airlie | 10ae83a | 2017-03-06 08:37:22 +1000 | [diff] [blame] | 1737 | |
Samuel Pitoiset | 225b198 | 2017-12-12 18:10:23 +0100 | [diff] [blame] | 1738 | void ac_build_waitcnt(struct ac_llvm_context *ctx, unsigned simm16) |
| 1739 | { |
| 1740 | LLVMValueRef args[1] = { |
| 1741 | LLVMConstInt(ctx->i32, simm16, false), |
| 1742 | }; |
| 1743 | ac_build_intrinsic(ctx, "llvm.amdgcn.s.waitcnt", |
| 1744 | ctx->voidt, args, 1, 0); |
| 1745 | } |
| 1746 | |
Samuel Pitoiset | 459e339 | 2018-03-02 15:01:30 +0100 | [diff] [blame] | 1747 | LLVMValueRef ac_build_fract(struct ac_llvm_context *ctx, LLVMValueRef src0, |
| 1748 | unsigned bitsize) |
| 1749 | { |
| 1750 | LLVMTypeRef type; |
| 1751 | char *intr; |
| 1752 | |
| 1753 | if (bitsize == 32) { |
| 1754 | intr = "llvm.floor.f32"; |
| 1755 | type = ctx->f32; |
| 1756 | } else { |
| 1757 | intr = "llvm.floor.f64"; |
| 1758 | type = ctx->f64; |
| 1759 | } |
| 1760 | |
| 1761 | LLVMValueRef params[] = { |
| 1762 | src0, |
| 1763 | }; |
| 1764 | LLVMValueRef floor = ac_build_intrinsic(ctx, intr, type, params, 1, |
| 1765 | AC_FUNC_ATTR_READNONE); |
| 1766 | return LLVMBuildFSub(ctx->builder, src0, floor, ""); |
| 1767 | } |
| 1768 | |
Samuel Pitoiset | e8bdde2 | 2018-03-02 15:01:31 +0100 | [diff] [blame] | 1769 | LLVMValueRef ac_build_isign(struct ac_llvm_context *ctx, LLVMValueRef src0, |
| 1770 | unsigned bitsize) |
| 1771 | { |
| 1772 | LLVMValueRef cmp, val, zero, one; |
| 1773 | LLVMTypeRef type; |
| 1774 | |
| 1775 | if (bitsize == 32) { |
| 1776 | type = ctx->i32; |
| 1777 | zero = ctx->i32_0; |
| 1778 | one = ctx->i32_1; |
| 1779 | } else { |
| 1780 | type = ctx->i64; |
| 1781 | zero = ctx->i64_0; |
| 1782 | one = ctx->i64_1; |
| 1783 | } |
| 1784 | |
| 1785 | cmp = LLVMBuildICmp(ctx->builder, LLVMIntSGT, src0, zero, ""); |
| 1786 | val = LLVMBuildSelect(ctx->builder, cmp, one, src0, ""); |
| 1787 | cmp = LLVMBuildICmp(ctx->builder, LLVMIntSGE, val, zero, ""); |
| 1788 | val = LLVMBuildSelect(ctx->builder, cmp, val, LLVMConstInt(type, -1, true), ""); |
| 1789 | return val; |
| 1790 | } |
| 1791 | |
Samuel Pitoiset | 322a51b | 2018-03-02 15:01:32 +0100 | [diff] [blame] | 1792 | LLVMValueRef ac_build_fsign(struct ac_llvm_context *ctx, LLVMValueRef src0, |
| 1793 | unsigned bitsize) |
| 1794 | { |
| 1795 | LLVMValueRef cmp, val, zero, one; |
| 1796 | LLVMTypeRef type; |
| 1797 | |
| 1798 | if (bitsize == 32) { |
| 1799 | type = ctx->f32; |
| 1800 | zero = ctx->f32_0; |
| 1801 | one = ctx->f32_1; |
| 1802 | } else { |
| 1803 | type = ctx->f64; |
| 1804 | zero = ctx->f64_0; |
| 1805 | one = ctx->f64_1; |
| 1806 | } |
| 1807 | |
| 1808 | cmp = LLVMBuildFCmp(ctx->builder, LLVMRealOGT, src0, zero, ""); |
| 1809 | val = LLVMBuildSelect(ctx->builder, cmp, one, src0, ""); |
| 1810 | cmp = LLVMBuildFCmp(ctx->builder, LLVMRealOGE, val, zero, ""); |
| 1811 | val = LLVMBuildSelect(ctx->builder, cmp, val, LLVMConstReal(type, -1.0), ""); |
| 1812 | return val; |
| 1813 | } |
| 1814 | |
Dave Airlie | 10ae83a | 2017-03-06 08:37:22 +1000 | [diff] [blame] | 1815 | void ac_get_image_intr_name(const char *base_name, |
| 1816 | LLVMTypeRef data_type, |
| 1817 | LLVMTypeRef coords_type, |
| 1818 | LLVMTypeRef rsrc_type, |
| 1819 | char *out_name, unsigned out_len) |
| 1820 | { |
| 1821 | char coords_type_name[8]; |
| 1822 | |
| 1823 | ac_build_type_name_for_intr(coords_type, coords_type_name, |
| 1824 | sizeof(coords_type_name)); |
| 1825 | |
Marek Olšák | 3bf1e03 | 2018-02-02 19:26:49 +0100 | [diff] [blame] | 1826 | char data_type_name[8]; |
| 1827 | char rsrc_type_name[8]; |
Dave Airlie | 10ae83a | 2017-03-06 08:37:22 +1000 | [diff] [blame] | 1828 | |
Marek Olšák | 3bf1e03 | 2018-02-02 19:26:49 +0100 | [diff] [blame] | 1829 | ac_build_type_name_for_intr(data_type, data_type_name, |
| 1830 | sizeof(data_type_name)); |
| 1831 | ac_build_type_name_for_intr(rsrc_type, rsrc_type_name, |
| 1832 | sizeof(rsrc_type_name)); |
| 1833 | snprintf(out_name, out_len, "%s.%s.%s.%s", base_name, |
| 1834 | data_type_name, coords_type_name, rsrc_type_name); |
Dave Airlie | 10ae83a | 2017-03-06 08:37:22 +1000 | [diff] [blame] | 1835 | } |
Dave Airlie | e265917 | 2017-04-25 23:33:29 +0100 | [diff] [blame] | 1836 | |
| 1837 | #define AC_EXP_TARGET (HAVE_LLVM >= 0x0500 ? 0 : 3) |
Samuel Pitoiset | 675dde1 | 2018-03-01 11:54:21 +0100 | [diff] [blame] | 1838 | #define AC_EXP_ENABLED_CHANNELS (HAVE_LLVM >= 0x0500 ? 1 : 0) |
Dave Airlie | e265917 | 2017-04-25 23:33:29 +0100 | [diff] [blame] | 1839 | #define AC_EXP_OUT0 (HAVE_LLVM >= 0x0500 ? 2 : 5) |
| 1840 | |
Marek Olšák | faa3747 | 2017-04-29 23:47:08 +0200 | [diff] [blame] | 1841 | enum ac_ir_type { |
| 1842 | AC_IR_UNDEF, |
| 1843 | AC_IR_CONST, |
| 1844 | AC_IR_VALUE, |
| 1845 | }; |
| 1846 | |
| 1847 | struct ac_vs_exp_chan |
| 1848 | { |
| 1849 | LLVMValueRef value; |
| 1850 | float const_float; |
| 1851 | enum ac_ir_type type; |
| 1852 | }; |
| 1853 | |
| 1854 | struct ac_vs_exp_inst { |
| 1855 | unsigned offset; |
| 1856 | LLVMValueRef inst; |
| 1857 | struct ac_vs_exp_chan chan[4]; |
| 1858 | }; |
| 1859 | |
| 1860 | struct ac_vs_exports { |
| 1861 | unsigned num; |
| 1862 | struct ac_vs_exp_inst exp[VARYING_SLOT_MAX]; |
| 1863 | }; |
| 1864 | |
Dave Airlie | e265917 | 2017-04-25 23:33:29 +0100 | [diff] [blame] | 1865 | /* Return true if the PARAM export has been eliminated. */ |
| 1866 | static bool ac_eliminate_const_output(uint8_t *vs_output_param_offset, |
| 1867 | uint32_t num_outputs, |
Marek Olšák | faa3747 | 2017-04-29 23:47:08 +0200 | [diff] [blame] | 1868 | struct ac_vs_exp_inst *exp) |
Dave Airlie | e265917 | 2017-04-25 23:33:29 +0100 | [diff] [blame] | 1869 | { |
| 1870 | unsigned i, default_val; /* SPI_PS_INPUT_CNTL_i.DEFAULT_VAL */ |
| 1871 | bool is_zero[4] = {}, is_one[4] = {}; |
| 1872 | |
| 1873 | for (i = 0; i < 4; i++) { |
Dave Airlie | e265917 | 2017-04-25 23:33:29 +0100 | [diff] [blame] | 1874 | /* It's a constant expression. Undef outputs are eliminated too. */ |
Marek Olšák | faa3747 | 2017-04-29 23:47:08 +0200 | [diff] [blame] | 1875 | if (exp->chan[i].type == AC_IR_UNDEF) { |
Dave Airlie | e265917 | 2017-04-25 23:33:29 +0100 | [diff] [blame] | 1876 | is_zero[i] = true; |
| 1877 | is_one[i] = true; |
Marek Olšák | faa3747 | 2017-04-29 23:47:08 +0200 | [diff] [blame] | 1878 | } else if (exp->chan[i].type == AC_IR_CONST) { |
| 1879 | if (exp->chan[i].const_float == 0) |
Dave Airlie | e265917 | 2017-04-25 23:33:29 +0100 | [diff] [blame] | 1880 | is_zero[i] = true; |
Marek Olšák | faa3747 | 2017-04-29 23:47:08 +0200 | [diff] [blame] | 1881 | else if (exp->chan[i].const_float == 1) |
Dave Airlie | e265917 | 2017-04-25 23:33:29 +0100 | [diff] [blame] | 1882 | is_one[i] = true; |
| 1883 | else |
| 1884 | return false; /* other constant */ |
| 1885 | } else |
| 1886 | return false; |
| 1887 | } |
| 1888 | |
| 1889 | /* Only certain combinations of 0 and 1 can be eliminated. */ |
| 1890 | if (is_zero[0] && is_zero[1] && is_zero[2]) |
| 1891 | default_val = is_zero[3] ? 0 : 1; |
| 1892 | else if (is_one[0] && is_one[1] && is_one[2]) |
| 1893 | default_val = is_zero[3] ? 2 : 3; |
| 1894 | else |
| 1895 | return false; |
| 1896 | |
| 1897 | /* The PARAM export can be represented as DEFAULT_VAL. Kill it. */ |
Marek Olšák | faa3747 | 2017-04-29 23:47:08 +0200 | [diff] [blame] | 1898 | LLVMInstructionEraseFromParent(exp->inst); |
Dave Airlie | e265917 | 2017-04-25 23:33:29 +0100 | [diff] [blame] | 1899 | |
| 1900 | /* Change OFFSET to DEFAULT_VAL. */ |
| 1901 | for (i = 0; i < num_outputs; i++) { |
Marek Olšák | faa3747 | 2017-04-29 23:47:08 +0200 | [diff] [blame] | 1902 | if (vs_output_param_offset[i] == exp->offset) { |
Dave Airlie | e265917 | 2017-04-25 23:33:29 +0100 | [diff] [blame] | 1903 | vs_output_param_offset[i] = |
| 1904 | AC_EXP_PARAM_DEFAULT_VAL_0000 + default_val; |
| 1905 | break; |
| 1906 | } |
| 1907 | } |
| 1908 | return true; |
| 1909 | } |
| 1910 | |
Samuel Pitoiset | 675dde1 | 2018-03-01 11:54:21 +0100 | [diff] [blame] | 1911 | static bool ac_eliminate_duplicated_output(struct ac_llvm_context *ctx, |
| 1912 | uint8_t *vs_output_param_offset, |
Marek Olšák | b087154 | 2017-04-29 23:56:03 +0200 | [diff] [blame] | 1913 | uint32_t num_outputs, |
| 1914 | struct ac_vs_exports *processed, |
| 1915 | struct ac_vs_exp_inst *exp) |
| 1916 | { |
| 1917 | unsigned p, copy_back_channels = 0; |
| 1918 | |
| 1919 | /* See if the output is already in the list of processed outputs. |
| 1920 | * The LLVMValueRef comparison relies on SSA. |
| 1921 | */ |
| 1922 | for (p = 0; p < processed->num; p++) { |
| 1923 | bool different = false; |
| 1924 | |
| 1925 | for (unsigned j = 0; j < 4; j++) { |
| 1926 | struct ac_vs_exp_chan *c1 = &processed->exp[p].chan[j]; |
| 1927 | struct ac_vs_exp_chan *c2 = &exp->chan[j]; |
| 1928 | |
| 1929 | /* Treat undef as a match. */ |
| 1930 | if (c2->type == AC_IR_UNDEF) |
| 1931 | continue; |
| 1932 | |
| 1933 | /* If c1 is undef but c2 isn't, we can copy c2 to c1 |
| 1934 | * and consider the instruction duplicated. |
| 1935 | */ |
| 1936 | if (c1->type == AC_IR_UNDEF) { |
| 1937 | copy_back_channels |= 1 << j; |
| 1938 | continue; |
| 1939 | } |
| 1940 | |
| 1941 | /* Test whether the channels are not equal. */ |
| 1942 | if (c1->type != c2->type || |
| 1943 | (c1->type == AC_IR_CONST && |
| 1944 | c1->const_float != c2->const_float) || |
| 1945 | (c1->type == AC_IR_VALUE && |
| 1946 | c1->value != c2->value)) { |
| 1947 | different = true; |
| 1948 | break; |
| 1949 | } |
| 1950 | } |
| 1951 | if (!different) |
| 1952 | break; |
| 1953 | |
| 1954 | copy_back_channels = 0; |
| 1955 | } |
| 1956 | if (p == processed->num) |
| 1957 | return false; |
| 1958 | |
| 1959 | /* If a match was found, but the matching export has undef where the new |
| 1960 | * one has a normal value, copy the normal value to the undef channel. |
| 1961 | */ |
| 1962 | struct ac_vs_exp_inst *match = &processed->exp[p]; |
| 1963 | |
Samuel Pitoiset | 675dde1 | 2018-03-01 11:54:21 +0100 | [diff] [blame] | 1964 | /* Get current enabled channels mask. */ |
| 1965 | LLVMValueRef arg = LLVMGetOperand(match->inst, AC_EXP_ENABLED_CHANNELS); |
| 1966 | unsigned enabled_channels = LLVMConstIntGetZExtValue(arg); |
| 1967 | |
Marek Olšák | b087154 | 2017-04-29 23:56:03 +0200 | [diff] [blame] | 1968 | while (copy_back_channels) { |
| 1969 | unsigned chan = u_bit_scan(©_back_channels); |
| 1970 | |
| 1971 | assert(match->chan[chan].type == AC_IR_UNDEF); |
| 1972 | LLVMSetOperand(match->inst, AC_EXP_OUT0 + chan, |
| 1973 | exp->chan[chan].value); |
| 1974 | match->chan[chan] = exp->chan[chan]; |
Samuel Pitoiset | 675dde1 | 2018-03-01 11:54:21 +0100 | [diff] [blame] | 1975 | |
| 1976 | /* Update number of enabled channels because the original mask |
| 1977 | * is not always 0xf. |
| 1978 | */ |
| 1979 | enabled_channels |= (1 << chan); |
| 1980 | LLVMSetOperand(match->inst, AC_EXP_ENABLED_CHANNELS, |
| 1981 | LLVMConstInt(ctx->i32, enabled_channels, 0)); |
Marek Olšák | b087154 | 2017-04-29 23:56:03 +0200 | [diff] [blame] | 1982 | } |
| 1983 | |
| 1984 | /* The PARAM export is duplicated. Kill it. */ |
| 1985 | LLVMInstructionEraseFromParent(exp->inst); |
| 1986 | |
| 1987 | /* Change OFFSET to the matching export. */ |
| 1988 | for (unsigned i = 0; i < num_outputs; i++) { |
| 1989 | if (vs_output_param_offset[i] == exp->offset) { |
| 1990 | vs_output_param_offset[i] = match->offset; |
| 1991 | break; |
| 1992 | } |
| 1993 | } |
| 1994 | return true; |
| 1995 | } |
| 1996 | |
Marek Olšák | 7647e90 | 2017-04-29 23:53:08 +0200 | [diff] [blame] | 1997 | void ac_optimize_vs_outputs(struct ac_llvm_context *ctx, |
| 1998 | LLVMValueRef main_fn, |
| 1999 | uint8_t *vs_output_param_offset, |
| 2000 | uint32_t num_outputs, |
| 2001 | uint8_t *num_param_exports) |
Dave Airlie | e265917 | 2017-04-25 23:33:29 +0100 | [diff] [blame] | 2002 | { |
| 2003 | LLVMBasicBlockRef bb; |
| 2004 | bool removed_any = false; |
| 2005 | struct ac_vs_exports exports; |
| 2006 | |
Dave Airlie | e265917 | 2017-04-25 23:33:29 +0100 | [diff] [blame] | 2007 | exports.num = 0; |
| 2008 | |
| 2009 | /* Process all LLVM instructions. */ |
| 2010 | bb = LLVMGetFirstBasicBlock(main_fn); |
| 2011 | while (bb) { |
| 2012 | LLVMValueRef inst = LLVMGetFirstInstruction(bb); |
| 2013 | |
| 2014 | while (inst) { |
| 2015 | LLVMValueRef cur = inst; |
| 2016 | inst = LLVMGetNextInstruction(inst); |
Marek Olšák | faa3747 | 2017-04-29 23:47:08 +0200 | [diff] [blame] | 2017 | struct ac_vs_exp_inst exp; |
Dave Airlie | e265917 | 2017-04-25 23:33:29 +0100 | [diff] [blame] | 2018 | |
| 2019 | if (LLVMGetInstructionOpcode(cur) != LLVMCall) |
| 2020 | continue; |
| 2021 | |
| 2022 | LLVMValueRef callee = ac_llvm_get_called_value(cur); |
| 2023 | |
| 2024 | if (!ac_llvm_is_function(callee)) |
| 2025 | continue; |
| 2026 | |
| 2027 | const char *name = LLVMGetValueName(callee); |
| 2028 | unsigned num_args = LLVMCountParams(callee); |
| 2029 | |
| 2030 | /* Check if this is an export instruction. */ |
| 2031 | if ((num_args != 9 && num_args != 8) || |
| 2032 | (strcmp(name, "llvm.SI.export") && |
| 2033 | strcmp(name, "llvm.amdgcn.exp.f32"))) |
| 2034 | continue; |
| 2035 | |
| 2036 | LLVMValueRef arg = LLVMGetOperand(cur, AC_EXP_TARGET); |
| 2037 | unsigned target = LLVMConstIntGetZExtValue(arg); |
| 2038 | |
| 2039 | if (target < V_008DFC_SQ_EXP_PARAM) |
| 2040 | continue; |
| 2041 | |
| 2042 | target -= V_008DFC_SQ_EXP_PARAM; |
| 2043 | |
Marek Olšák | faa3747 | 2017-04-29 23:47:08 +0200 | [diff] [blame] | 2044 | /* Parse the instruction. */ |
| 2045 | memset(&exp, 0, sizeof(exp)); |
| 2046 | exp.offset = target; |
| 2047 | exp.inst = cur; |
| 2048 | |
| 2049 | for (unsigned i = 0; i < 4; i++) { |
| 2050 | LLVMValueRef v = LLVMGetOperand(cur, AC_EXP_OUT0 + i); |
| 2051 | |
| 2052 | exp.chan[i].value = v; |
| 2053 | |
| 2054 | if (LLVMIsUndef(v)) { |
| 2055 | exp.chan[i].type = AC_IR_UNDEF; |
| 2056 | } else if (LLVMIsAConstantFP(v)) { |
| 2057 | LLVMBool loses_info; |
| 2058 | exp.chan[i].type = AC_IR_CONST; |
| 2059 | exp.chan[i].const_float = |
| 2060 | LLVMConstRealGetDouble(v, &loses_info); |
| 2061 | } else { |
| 2062 | exp.chan[i].type = AC_IR_VALUE; |
| 2063 | } |
| 2064 | } |
| 2065 | |
Marek Olšák | b087154 | 2017-04-29 23:56:03 +0200 | [diff] [blame] | 2066 | /* Eliminate constant and duplicated PARAM exports. */ |
Dave Airlie | e265917 | 2017-04-25 23:33:29 +0100 | [diff] [blame] | 2067 | if (ac_eliminate_const_output(vs_output_param_offset, |
Marek Olšák | b087154 | 2017-04-29 23:56:03 +0200 | [diff] [blame] | 2068 | num_outputs, &exp) || |
Samuel Pitoiset | 675dde1 | 2018-03-01 11:54:21 +0100 | [diff] [blame] | 2069 | ac_eliminate_duplicated_output(ctx, |
| 2070 | vs_output_param_offset, |
Marek Olšák | b087154 | 2017-04-29 23:56:03 +0200 | [diff] [blame] | 2071 | num_outputs, &exports, |
| 2072 | &exp)) { |
Dave Airlie | e265917 | 2017-04-25 23:33:29 +0100 | [diff] [blame] | 2073 | removed_any = true; |
| 2074 | } else { |
Marek Olšák | faa3747 | 2017-04-29 23:47:08 +0200 | [diff] [blame] | 2075 | exports.exp[exports.num++] = exp; |
Dave Airlie | e265917 | 2017-04-25 23:33:29 +0100 | [diff] [blame] | 2076 | } |
| 2077 | } |
| 2078 | bb = LLVMGetNextBasicBlock(bb); |
| 2079 | } |
| 2080 | |
| 2081 | /* Remove holes in export memory due to removed PARAM exports. |
| 2082 | * This is done by renumbering all PARAM exports. |
| 2083 | */ |
| 2084 | if (removed_any) { |
Marek Olšák | 34bc470 | 2017-05-08 16:37:26 +0200 | [diff] [blame] | 2085 | uint8_t old_offset[VARYING_SLOT_MAX]; |
Dave Airlie | e265917 | 2017-04-25 23:33:29 +0100 | [diff] [blame] | 2086 | unsigned out, i; |
| 2087 | |
| 2088 | /* Make a copy of the offsets. We need the old version while |
| 2089 | * we are modifying some of them. */ |
Marek Olšák | 34bc470 | 2017-05-08 16:37:26 +0200 | [diff] [blame] | 2090 | memcpy(old_offset, vs_output_param_offset, |
| 2091 | sizeof(old_offset)); |
Dave Airlie | e265917 | 2017-04-25 23:33:29 +0100 | [diff] [blame] | 2092 | |
| 2093 | for (i = 0; i < exports.num; i++) { |
Marek Olšák | faa3747 | 2017-04-29 23:47:08 +0200 | [diff] [blame] | 2094 | unsigned offset = exports.exp[i].offset; |
Dave Airlie | e265917 | 2017-04-25 23:33:29 +0100 | [diff] [blame] | 2095 | |
Marek Olšák | 34bc470 | 2017-05-08 16:37:26 +0200 | [diff] [blame] | 2096 | /* Update vs_output_param_offset. Multiple outputs can |
| 2097 | * have the same offset. |
| 2098 | */ |
Dave Airlie | e265917 | 2017-04-25 23:33:29 +0100 | [diff] [blame] | 2099 | for (out = 0; out < num_outputs; out++) { |
Marek Olšák | 34bc470 | 2017-05-08 16:37:26 +0200 | [diff] [blame] | 2100 | if (old_offset[out] == offset) |
| 2101 | vs_output_param_offset[out] = i; |
Dave Airlie | e265917 | 2017-04-25 23:33:29 +0100 | [diff] [blame] | 2102 | } |
Marek Olšák | 34bc470 | 2017-05-08 16:37:26 +0200 | [diff] [blame] | 2103 | |
| 2104 | /* Change the PARAM offset in the instruction. */ |
| 2105 | LLVMSetOperand(exports.exp[i].inst, AC_EXP_TARGET, |
| 2106 | LLVMConstInt(ctx->i32, |
| 2107 | V_008DFC_SQ_EXP_PARAM + i, 0)); |
Dave Airlie | e265917 | 2017-04-25 23:33:29 +0100 | [diff] [blame] | 2108 | } |
Marek Olšák | 34bc470 | 2017-05-08 16:37:26 +0200 | [diff] [blame] | 2109 | *num_param_exports = exports.num; |
Dave Airlie | e265917 | 2017-04-25 23:33:29 +0100 | [diff] [blame] | 2110 | } |
| 2111 | } |
Dave Airlie | 1dda214 | 2017-10-19 05:29:02 +0100 | [diff] [blame] | 2112 | |
| 2113 | void ac_init_exec_full_mask(struct ac_llvm_context *ctx) |
| 2114 | { |
| 2115 | LLVMValueRef full_mask = LLVMConstInt(ctx->i64, ~0ull, 0); |
| 2116 | ac_build_intrinsic(ctx, |
| 2117 | "llvm.amdgcn.init.exec", ctx->voidt, |
| 2118 | &full_mask, 1, AC_FUNC_ATTR_CONVERGENT); |
| 2119 | } |
Dave Airlie | f925f5b | 2017-10-26 14:43:51 +1000 | [diff] [blame] | 2120 | |
| 2121 | void ac_declare_lds_as_pointer(struct ac_llvm_context *ctx) |
| 2122 | { |
| 2123 | unsigned lds_size = ctx->chip_class >= CIK ? 65536 : 32768; |
| 2124 | ctx->lds = LLVMBuildIntToPtr(ctx->builder, ctx->i32_0, |
| 2125 | LLVMPointerType(LLVMArrayType(ctx->i32, lds_size / 4), AC_LOCAL_ADDR_SPACE), |
| 2126 | "lds"); |
| 2127 | } |
| 2128 | |
| 2129 | LLVMValueRef ac_lds_load(struct ac_llvm_context *ctx, |
| 2130 | LLVMValueRef dw_addr) |
| 2131 | { |
| 2132 | return ac_build_load(ctx, ctx->lds, dw_addr); |
| 2133 | } |
| 2134 | |
| 2135 | void ac_lds_store(struct ac_llvm_context *ctx, |
| 2136 | LLVMValueRef dw_addr, |
| 2137 | LLVMValueRef value) |
| 2138 | { |
| 2139 | value = ac_to_integer(ctx, value); |
| 2140 | ac_build_indexed_store(ctx, ctx->lds, |
| 2141 | dw_addr, value); |
| 2142 | } |
Dave Airlie | 82d47b9 | 2017-10-26 15:28:41 +1000 | [diff] [blame] | 2143 | |
| 2144 | LLVMValueRef ac_find_lsb(struct ac_llvm_context *ctx, |
| 2145 | LLVMTypeRef dst_type, |
| 2146 | LLVMValueRef src0) |
| 2147 | { |
Timothy Arceri | 12a2350 | 2018-02-06 14:38:57 +1100 | [diff] [blame] | 2148 | unsigned src0_bitsize = ac_get_elem_bits(ctx, LLVMTypeOf(src0)); |
| 2149 | const char *intrin_name; |
| 2150 | LLVMTypeRef type; |
| 2151 | LLVMValueRef zero; |
| 2152 | if (src0_bitsize == 64) { |
| 2153 | intrin_name = "llvm.cttz.i64"; |
| 2154 | type = ctx->i64; |
| 2155 | zero = ctx->i64_0; |
| 2156 | } else { |
| 2157 | intrin_name = "llvm.cttz.i32"; |
| 2158 | type = ctx->i32; |
| 2159 | zero = ctx->i32_0; |
| 2160 | } |
| 2161 | |
Dave Airlie | 82d47b9 | 2017-10-26 15:28:41 +1000 | [diff] [blame] | 2162 | LLVMValueRef params[2] = { |
| 2163 | src0, |
| 2164 | |
| 2165 | /* The value of 1 means that ffs(x=0) = undef, so LLVM won't |
| 2166 | * add special code to check for x=0. The reason is that |
| 2167 | * the LLVM behavior for x=0 is different from what we |
| 2168 | * need here. However, LLVM also assumes that ffs(x) is |
| 2169 | * in [0, 31], but GLSL expects that ffs(0) = -1, so |
| 2170 | * a conditional assignment to handle 0 is still required. |
| 2171 | * |
| 2172 | * The hardware already implements the correct behavior. |
| 2173 | */ |
| 2174 | LLVMConstInt(ctx->i1, 1, false), |
| 2175 | }; |
| 2176 | |
Timothy Arceri | 12a2350 | 2018-02-06 14:38:57 +1100 | [diff] [blame] | 2177 | LLVMValueRef lsb = ac_build_intrinsic(ctx, intrin_name, type, |
Dave Airlie | 82d47b9 | 2017-10-26 15:28:41 +1000 | [diff] [blame] | 2178 | params, 2, |
| 2179 | AC_FUNC_ATTR_READNONE); |
| 2180 | |
Timothy Arceri | 12a2350 | 2018-02-06 14:38:57 +1100 | [diff] [blame] | 2181 | if (src0_bitsize == 64) { |
| 2182 | lsb = LLVMBuildTrunc(ctx->builder, lsb, ctx->i32, ""); |
| 2183 | } |
| 2184 | |
Dave Airlie | 82d47b9 | 2017-10-26 15:28:41 +1000 | [diff] [blame] | 2185 | /* TODO: We need an intrinsic to skip this conditional. */ |
| 2186 | /* Check for zero: */ |
| 2187 | return LLVMBuildSelect(ctx->builder, LLVMBuildICmp(ctx->builder, |
| 2188 | LLVMIntEQ, src0, |
Timothy Arceri | 12a2350 | 2018-02-06 14:38:57 +1100 | [diff] [blame] | 2189 | zero, ""), |
Dave Airlie | 82d47b9 | 2017-10-26 15:28:41 +1000 | [diff] [blame] | 2190 | LLVMConstInt(ctx->i32, -1, 0), lsb, ""); |
| 2191 | } |
Marek Olšák | b633999 | 2017-12-31 23:35:59 +0100 | [diff] [blame] | 2192 | |
| 2193 | LLVMTypeRef ac_array_in_const_addr_space(LLVMTypeRef elem_type) |
| 2194 | { |
| 2195 | return LLVMPointerType(LLVMArrayType(elem_type, 0), |
| 2196 | AC_CONST_ADDR_SPACE); |
| 2197 | } |
Marek Olšák | 931ec80 | 2018-01-01 21:04:22 +0100 | [diff] [blame] | 2198 | |
| 2199 | LLVMTypeRef ac_array_in_const32_addr_space(LLVMTypeRef elem_type) |
| 2200 | { |
| 2201 | if (!HAVE_32BIT_POINTERS) |
| 2202 | return ac_array_in_const_addr_space(elem_type); |
| 2203 | |
| 2204 | return LLVMPointerType(LLVMArrayType(elem_type, 0), |
| 2205 | AC_CONST_32BIT_ADDR_SPACE); |
| 2206 | } |
Timothy Arceri | 42627da | 2018-03-07 10:53:34 +1100 | [diff] [blame] | 2207 | |
| 2208 | static struct ac_llvm_flow * |
| 2209 | get_current_flow(struct ac_llvm_context *ctx) |
| 2210 | { |
| 2211 | if (ctx->flow_depth > 0) |
| 2212 | return &ctx->flow[ctx->flow_depth - 1]; |
| 2213 | return NULL; |
| 2214 | } |
| 2215 | |
| 2216 | static struct ac_llvm_flow * |
| 2217 | get_innermost_loop(struct ac_llvm_context *ctx) |
| 2218 | { |
| 2219 | for (unsigned i = ctx->flow_depth; i > 0; --i) { |
| 2220 | if (ctx->flow[i - 1].loop_entry_block) |
| 2221 | return &ctx->flow[i - 1]; |
| 2222 | } |
| 2223 | return NULL; |
| 2224 | } |
| 2225 | |
| 2226 | static struct ac_llvm_flow * |
| 2227 | push_flow(struct ac_llvm_context *ctx) |
| 2228 | { |
| 2229 | struct ac_llvm_flow *flow; |
| 2230 | |
| 2231 | if (ctx->flow_depth >= ctx->flow_depth_max) { |
| 2232 | unsigned new_max = MAX2(ctx->flow_depth << 1, |
| 2233 | AC_LLVM_INITIAL_CF_DEPTH); |
| 2234 | |
| 2235 | ctx->flow = realloc(ctx->flow, new_max * sizeof(*ctx->flow)); |
| 2236 | ctx->flow_depth_max = new_max; |
| 2237 | } |
| 2238 | |
| 2239 | flow = &ctx->flow[ctx->flow_depth]; |
| 2240 | ctx->flow_depth++; |
| 2241 | |
| 2242 | flow->next_block = NULL; |
| 2243 | flow->loop_entry_block = NULL; |
| 2244 | return flow; |
| 2245 | } |
| 2246 | |
| 2247 | static void set_basicblock_name(LLVMBasicBlockRef bb, const char *base, |
| 2248 | int label_id) |
| 2249 | { |
| 2250 | char buf[32]; |
| 2251 | snprintf(buf, sizeof(buf), "%s%d", base, label_id); |
| 2252 | LLVMSetValueName(LLVMBasicBlockAsValue(bb), buf); |
| 2253 | } |
| 2254 | |
| 2255 | /* Append a basic block at the level of the parent flow. |
| 2256 | */ |
| 2257 | static LLVMBasicBlockRef append_basic_block(struct ac_llvm_context *ctx, |
| 2258 | const char *name) |
| 2259 | { |
| 2260 | assert(ctx->flow_depth >= 1); |
| 2261 | |
| 2262 | if (ctx->flow_depth >= 2) { |
| 2263 | struct ac_llvm_flow *flow = &ctx->flow[ctx->flow_depth - 2]; |
| 2264 | |
| 2265 | return LLVMInsertBasicBlockInContext(ctx->context, |
| 2266 | flow->next_block, name); |
| 2267 | } |
| 2268 | |
| 2269 | LLVMValueRef main_fn = |
| 2270 | LLVMGetBasicBlockParent(LLVMGetInsertBlock(ctx->builder)); |
| 2271 | return LLVMAppendBasicBlockInContext(ctx->context, main_fn, name); |
| 2272 | } |
| 2273 | |
| 2274 | /* Emit a branch to the given default target for the current block if |
| 2275 | * applicable -- that is, if the current block does not already contain a |
| 2276 | * branch from a break or continue. |
| 2277 | */ |
| 2278 | static void emit_default_branch(LLVMBuilderRef builder, |
| 2279 | LLVMBasicBlockRef target) |
| 2280 | { |
| 2281 | if (!LLVMGetBasicBlockTerminator(LLVMGetInsertBlock(builder))) |
| 2282 | LLVMBuildBr(builder, target); |
| 2283 | } |
| 2284 | |
| 2285 | void ac_build_bgnloop(struct ac_llvm_context *ctx, int label_id) |
| 2286 | { |
| 2287 | struct ac_llvm_flow *flow = push_flow(ctx); |
| 2288 | flow->loop_entry_block = append_basic_block(ctx, "LOOP"); |
| 2289 | flow->next_block = append_basic_block(ctx, "ENDLOOP"); |
| 2290 | set_basicblock_name(flow->loop_entry_block, "loop", label_id); |
| 2291 | LLVMBuildBr(ctx->builder, flow->loop_entry_block); |
| 2292 | LLVMPositionBuilderAtEnd(ctx->builder, flow->loop_entry_block); |
| 2293 | } |
| 2294 | |
| 2295 | void ac_build_break(struct ac_llvm_context *ctx) |
| 2296 | { |
| 2297 | struct ac_llvm_flow *flow = get_innermost_loop(ctx); |
| 2298 | LLVMBuildBr(ctx->builder, flow->next_block); |
| 2299 | } |
| 2300 | |
| 2301 | void ac_build_continue(struct ac_llvm_context *ctx) |
| 2302 | { |
| 2303 | struct ac_llvm_flow *flow = get_innermost_loop(ctx); |
| 2304 | LLVMBuildBr(ctx->builder, flow->loop_entry_block); |
| 2305 | } |
| 2306 | |
| 2307 | void ac_build_else(struct ac_llvm_context *ctx, int label_id) |
| 2308 | { |
| 2309 | struct ac_llvm_flow *current_branch = get_current_flow(ctx); |
| 2310 | LLVMBasicBlockRef endif_block; |
| 2311 | |
| 2312 | assert(!current_branch->loop_entry_block); |
| 2313 | |
| 2314 | endif_block = append_basic_block(ctx, "ENDIF"); |
| 2315 | emit_default_branch(ctx->builder, endif_block); |
| 2316 | |
| 2317 | LLVMPositionBuilderAtEnd(ctx->builder, current_branch->next_block); |
| 2318 | set_basicblock_name(current_branch->next_block, "else", label_id); |
| 2319 | |
| 2320 | current_branch->next_block = endif_block; |
| 2321 | } |
| 2322 | |
| 2323 | void ac_build_endif(struct ac_llvm_context *ctx, int label_id) |
| 2324 | { |
| 2325 | struct ac_llvm_flow *current_branch = get_current_flow(ctx); |
| 2326 | |
| 2327 | assert(!current_branch->loop_entry_block); |
| 2328 | |
| 2329 | emit_default_branch(ctx->builder, current_branch->next_block); |
| 2330 | LLVMPositionBuilderAtEnd(ctx->builder, current_branch->next_block); |
| 2331 | set_basicblock_name(current_branch->next_block, "endif", label_id); |
| 2332 | |
| 2333 | ctx->flow_depth--; |
| 2334 | } |
| 2335 | |
| 2336 | void ac_build_endloop(struct ac_llvm_context *ctx, int label_id) |
| 2337 | { |
| 2338 | struct ac_llvm_flow *current_loop = get_current_flow(ctx); |
| 2339 | |
| 2340 | assert(current_loop->loop_entry_block); |
| 2341 | |
| 2342 | emit_default_branch(ctx->builder, current_loop->loop_entry_block); |
| 2343 | |
| 2344 | LLVMPositionBuilderAtEnd(ctx->builder, current_loop->next_block); |
| 2345 | set_basicblock_name(current_loop->next_block, "endloop", label_id); |
| 2346 | ctx->flow_depth--; |
| 2347 | } |
| 2348 | |
| 2349 | static void if_cond_emit(struct ac_llvm_context *ctx, LLVMValueRef cond, |
| 2350 | int label_id) |
| 2351 | { |
| 2352 | struct ac_llvm_flow *flow = push_flow(ctx); |
| 2353 | LLVMBasicBlockRef if_block; |
| 2354 | |
| 2355 | if_block = append_basic_block(ctx, "IF"); |
| 2356 | flow->next_block = append_basic_block(ctx, "ELSE"); |
| 2357 | set_basicblock_name(if_block, "if", label_id); |
| 2358 | LLVMBuildCondBr(ctx->builder, cond, if_block, flow->next_block); |
| 2359 | LLVMPositionBuilderAtEnd(ctx->builder, if_block); |
| 2360 | } |
| 2361 | |
| 2362 | void ac_build_if(struct ac_llvm_context *ctx, LLVMValueRef value, |
| 2363 | int label_id) |
| 2364 | { |
| 2365 | LLVMValueRef cond = LLVMBuildFCmp(ctx->builder, LLVMRealUNE, |
| 2366 | value, ctx->f32_0, ""); |
| 2367 | if_cond_emit(ctx, cond, label_id); |
| 2368 | } |
| 2369 | |
| 2370 | void ac_build_uif(struct ac_llvm_context *ctx, LLVMValueRef value, |
| 2371 | int label_id) |
| 2372 | { |
| 2373 | LLVMValueRef cond = LLVMBuildICmp(ctx->builder, LLVMIntNE, |
| 2374 | ac_to_integer(ctx, value), |
| 2375 | ctx->i32_0, ""); |
| 2376 | if_cond_emit(ctx, cond, label_id); |
| 2377 | } |
Samuel Pitoiset | bf63682 | 2018-03-09 16:22:44 +0100 | [diff] [blame] | 2378 | |
| 2379 | LLVMValueRef ac_build_alloca(struct ac_llvm_context *ac, LLVMTypeRef type, |
| 2380 | const char *name) |
| 2381 | { |
| 2382 | LLVMBuilderRef builder = ac->builder; |
| 2383 | LLVMBasicBlockRef current_block = LLVMGetInsertBlock(builder); |
| 2384 | LLVMValueRef function = LLVMGetBasicBlockParent(current_block); |
| 2385 | LLVMBasicBlockRef first_block = LLVMGetEntryBasicBlock(function); |
| 2386 | LLVMValueRef first_instr = LLVMGetFirstInstruction(first_block); |
| 2387 | LLVMBuilderRef first_builder = LLVMCreateBuilderInContext(ac->context); |
| 2388 | LLVMValueRef res; |
| 2389 | |
| 2390 | if (first_instr) { |
| 2391 | LLVMPositionBuilderBefore(first_builder, first_instr); |
| 2392 | } else { |
| 2393 | LLVMPositionBuilderAtEnd(first_builder, first_block); |
| 2394 | } |
| 2395 | |
| 2396 | res = LLVMBuildAlloca(first_builder, type, name); |
| 2397 | LLVMBuildStore(builder, LLVMConstNull(type), res); |
| 2398 | |
| 2399 | LLVMDisposeBuilder(first_builder); |
| 2400 | |
| 2401 | return res; |
| 2402 | } |
| 2403 | |
| 2404 | LLVMValueRef ac_build_alloca_undef(struct ac_llvm_context *ac, |
| 2405 | LLVMTypeRef type, const char *name) |
| 2406 | { |
| 2407 | LLVMValueRef ptr = ac_build_alloca(ac, type, name); |
| 2408 | LLVMBuildStore(ac->builder, LLVMGetUndef(type), ptr); |
| 2409 | return ptr; |
| 2410 | } |
Samuel Pitoiset | 895632b | 2018-03-09 16:26:34 +0100 | [diff] [blame] | 2411 | |
| 2412 | LLVMValueRef ac_cast_ptr(struct ac_llvm_context *ctx, LLVMValueRef ptr, |
| 2413 | LLVMTypeRef type) |
| 2414 | { |
| 2415 | int addr_space = LLVMGetPointerAddressSpace(LLVMTypeOf(ptr)); |
| 2416 | return LLVMBuildBitCast(ctx->builder, ptr, |
| 2417 | LLVMPointerType(type, addr_space), ""); |
| 2418 | } |
Samuel Pitoiset | 28bb687 | 2018-03-09 16:36:31 +0100 | [diff] [blame] | 2419 | |
| 2420 | LLVMValueRef ac_trim_vector(struct ac_llvm_context *ctx, LLVMValueRef value, |
| 2421 | unsigned count) |
| 2422 | { |
| 2423 | unsigned num_components = ac_get_llvm_num_components(value); |
| 2424 | if (count == num_components) |
| 2425 | return value; |
| 2426 | |
| 2427 | LLVMValueRef masks[] = { |
| 2428 | LLVMConstInt(ctx->i32, 0, false), LLVMConstInt(ctx->i32, 1, false), |
| 2429 | LLVMConstInt(ctx->i32, 2, false), LLVMConstInt(ctx->i32, 3, false)}; |
| 2430 | |
| 2431 | if (count == 1) |
| 2432 | return LLVMBuildExtractElement(ctx->builder, value, masks[0], |
| 2433 | ""); |
| 2434 | |
| 2435 | LLVMValueRef swizzle = LLVMConstVector(masks, count); |
| 2436 | return LLVMBuildShuffleVector(ctx->builder, value, value, swizzle, ""); |
| 2437 | } |
Samuel Pitoiset | 61a91ca | 2018-03-09 16:39:35 +0100 | [diff] [blame] | 2438 | |
| 2439 | LLVMValueRef ac_unpack_param(struct ac_llvm_context *ctx, LLVMValueRef param, |
| 2440 | unsigned rshift, unsigned bitwidth) |
| 2441 | { |
| 2442 | LLVMValueRef value = param; |
| 2443 | if (rshift) |
| 2444 | value = LLVMBuildLShr(ctx->builder, value, |
| 2445 | LLVMConstInt(ctx->i32, rshift, false), ""); |
| 2446 | |
| 2447 | if (rshift + bitwidth < 32) { |
| 2448 | unsigned mask = (1 << bitwidth) - 1; |
| 2449 | value = LLVMBuildAnd(ctx->builder, value, |
| 2450 | LLVMConstInt(ctx->i32, mask, false), ""); |
| 2451 | } |
| 2452 | return value; |
| 2453 | } |
Marek Olšák | dc04e4b | 2018-03-20 19:14:57 -0400 | [diff] [blame] | 2454 | |
| 2455 | /* Adjust the sample index according to FMASK. |
| 2456 | * |
| 2457 | * For uncompressed MSAA surfaces, FMASK should return 0x76543210, |
| 2458 | * which is the identity mapping. Each nibble says which physical sample |
| 2459 | * should be fetched to get that sample. |
| 2460 | * |
| 2461 | * For example, 0x11111100 means there are only 2 samples stored and |
| 2462 | * the second sample covers 3/4 of the pixel. When reading samples 0 |
| 2463 | * and 1, return physical sample 0 (determined by the first two 0s |
| 2464 | * in FMASK), otherwise return physical sample 1. |
| 2465 | * |
| 2466 | * The sample index should be adjusted as follows: |
| 2467 | * addr[sample_index] = (fmask >> (addr[sample_index] * 4)) & 0xF; |
| 2468 | */ |
| 2469 | void ac_apply_fmask_to_sample(struct ac_llvm_context *ac, LLVMValueRef fmask, |
| 2470 | LLVMValueRef *addr, bool is_array_tex) |
| 2471 | { |
| 2472 | struct ac_image_args fmask_load = {}; |
| 2473 | fmask_load.opcode = ac_image_load; |
| 2474 | fmask_load.resource = fmask; |
| 2475 | fmask_load.dmask = 0xf; |
| 2476 | fmask_load.da = is_array_tex; |
| 2477 | |
| 2478 | LLVMValueRef fmask_addr[4]; |
| 2479 | memcpy(fmask_addr, addr, sizeof(fmask_addr[0]) * 3); |
| 2480 | fmask_addr[3] = LLVMGetUndef(ac->i32); |
| 2481 | |
| 2482 | fmask_load.addr = ac_build_gather_values(ac, fmask_addr, |
| 2483 | is_array_tex ? 4 : 2); |
| 2484 | |
| 2485 | LLVMValueRef fmask_value = ac_build_image_opcode(ac, &fmask_load); |
| 2486 | fmask_value = LLVMBuildExtractElement(ac->builder, fmask_value, |
| 2487 | ac->i32_0, ""); |
| 2488 | |
| 2489 | /* Apply the formula. */ |
| 2490 | unsigned sample_chan = is_array_tex ? 3 : 2; |
| 2491 | LLVMValueRef final_sample; |
| 2492 | final_sample = LLVMBuildMul(ac->builder, addr[sample_chan], |
| 2493 | LLVMConstInt(ac->i32, 4, 0), ""); |
| 2494 | final_sample = LLVMBuildLShr(ac->builder, fmask_value, final_sample, ""); |
| 2495 | final_sample = LLVMBuildAnd(ac->builder, final_sample, |
| 2496 | LLVMConstInt(ac->i32, 0xF, 0), ""); |
| 2497 | |
| 2498 | /* Don't rewrite the sample index if WORD1.DATA_FORMAT of the FMASK |
| 2499 | * resource descriptor is 0 (invalid), |
| 2500 | */ |
| 2501 | LLVMValueRef tmp; |
| 2502 | tmp = LLVMBuildBitCast(ac->builder, fmask, ac->v8i32, ""); |
| 2503 | tmp = LLVMBuildExtractElement(ac->builder, tmp, ac->i32_1, ""); |
| 2504 | tmp = LLVMBuildICmp(ac->builder, LLVMIntNE, tmp, ac->i32_0, ""); |
| 2505 | |
| 2506 | /* Replace the MSAA sample index. */ |
| 2507 | addr[sample_chan] = LLVMBuildSelect(ac->builder, tmp, final_sample, |
| 2508 | addr[sample_chan], ""); |
| 2509 | } |
Daniel Schürmann | d5f7ebd | 2018-03-06 15:03:36 +0100 | [diff] [blame^] | 2510 | |
| 2511 | static LLVMValueRef |
| 2512 | _ac_build_readlane(struct ac_llvm_context *ctx, LLVMValueRef src, LLVMValueRef lane) |
| 2513 | { |
| 2514 | ac_build_optimization_barrier(ctx, &src); |
| 2515 | return ac_build_intrinsic(ctx, |
| 2516 | lane == NULL ? "llvm.amdgcn.readfirstlane" : "llvm.amdgcn.readlane", |
| 2517 | LLVMTypeOf(src), (LLVMValueRef []) { |
| 2518 | src, lane }, |
| 2519 | lane == NULL ? 1 : 2, |
| 2520 | AC_FUNC_ATTR_READNONE | |
| 2521 | AC_FUNC_ATTR_CONVERGENT); |
| 2522 | } |
| 2523 | |
| 2524 | /** |
| 2525 | * Builds the "llvm.amdgcn.readlane" or "llvm.amdgcn.readfirstlane" intrinsic. |
| 2526 | * @param ctx |
| 2527 | * @param src |
| 2528 | * @param lane - id of the lane or NULL for the first active lane |
| 2529 | * @return value of the lane |
| 2530 | */ |
| 2531 | LLVMValueRef |
| 2532 | ac_build_readlane(struct ac_llvm_context *ctx, LLVMValueRef src, LLVMValueRef lane) |
| 2533 | { |
| 2534 | LLVMTypeRef src_type = LLVMTypeOf(src); |
| 2535 | src = ac_to_integer(ctx, src); |
| 2536 | unsigned bits = LLVMGetIntTypeWidth(LLVMTypeOf(src)); |
| 2537 | LLVMValueRef ret; |
| 2538 | |
| 2539 | if (bits == 32) { |
| 2540 | ret = _ac_build_readlane(ctx, src, lane); |
| 2541 | } else { |
| 2542 | assert(bits % 32 == 0); |
| 2543 | LLVMTypeRef vec_type = LLVMVectorType(ctx->i32, bits / 32); |
| 2544 | LLVMValueRef src_vector = |
| 2545 | LLVMBuildBitCast(ctx->builder, src, vec_type, ""); |
| 2546 | ret = LLVMGetUndef(vec_type); |
| 2547 | for (unsigned i = 0; i < bits / 32; i++) { |
| 2548 | src = LLVMBuildExtractElement(ctx->builder, src_vector, |
| 2549 | LLVMConstInt(ctx->i32, i, 0), ""); |
| 2550 | LLVMValueRef ret_comp = _ac_build_readlane(ctx, src, lane); |
| 2551 | ret = LLVMBuildInsertElement(ctx->builder, ret, ret_comp, |
| 2552 | LLVMConstInt(ctx->i32, i, 0), ""); |
| 2553 | } |
| 2554 | } |
| 2555 | return LLVMBuildBitCast(ctx->builder, ret, src_type, ""); |
| 2556 | } |
| 2557 | |
| 2558 | LLVMValueRef |
| 2559 | ac_build_writelane(struct ac_llvm_context *ctx, LLVMValueRef src, LLVMValueRef value, LLVMValueRef lane) |
| 2560 | { |
| 2561 | /* TODO: Use the actual instruction when LLVM adds an intrinsic for it. |
| 2562 | */ |
| 2563 | LLVMValueRef pred = LLVMBuildICmp(ctx->builder, LLVMIntEQ, lane, |
| 2564 | ac_get_thread_id(ctx), ""); |
| 2565 | return LLVMBuildSelect(ctx->builder, pred, value, src, ""); |
| 2566 | } |
| 2567 | |
| 2568 | LLVMValueRef |
| 2569 | ac_build_mbcnt(struct ac_llvm_context *ctx, LLVMValueRef mask) |
| 2570 | { |
| 2571 | LLVMValueRef mask_vec = LLVMBuildBitCast(ctx->builder, mask, |
| 2572 | LLVMVectorType(ctx->i32, 2), |
| 2573 | ""); |
| 2574 | LLVMValueRef mask_lo = LLVMBuildExtractElement(ctx->builder, mask_vec, |
| 2575 | ctx->i32_0, ""); |
| 2576 | LLVMValueRef mask_hi = LLVMBuildExtractElement(ctx->builder, mask_vec, |
| 2577 | ctx->i32_1, ""); |
| 2578 | LLVMValueRef val = |
| 2579 | ac_build_intrinsic(ctx, "llvm.amdgcn.mbcnt.lo", ctx->i32, |
| 2580 | (LLVMValueRef []) { mask_lo, ctx->i32_0 }, |
| 2581 | 2, AC_FUNC_ATTR_READNONE); |
| 2582 | val = ac_build_intrinsic(ctx, "llvm.amdgcn.mbcnt.hi", ctx->i32, |
| 2583 | (LLVMValueRef []) { mask_hi, val }, |
| 2584 | 2, AC_FUNC_ATTR_READNONE); |
| 2585 | return val; |
| 2586 | } |
| 2587 | |
| 2588 | enum dpp_ctrl { |
| 2589 | _dpp_quad_perm = 0x000, |
| 2590 | _dpp_row_sl = 0x100, |
| 2591 | _dpp_row_sr = 0x110, |
| 2592 | _dpp_row_rr = 0x120, |
| 2593 | dpp_wf_sl1 = 0x130, |
| 2594 | dpp_wf_rl1 = 0x134, |
| 2595 | dpp_wf_sr1 = 0x138, |
| 2596 | dpp_wf_rr1 = 0x13C, |
| 2597 | dpp_row_mirror = 0x140, |
| 2598 | dpp_row_half_mirror = 0x141, |
| 2599 | dpp_row_bcast15 = 0x142, |
| 2600 | dpp_row_bcast31 = 0x143 |
| 2601 | }; |
| 2602 | |
| 2603 | static inline enum dpp_ctrl |
| 2604 | dpp_quad_perm(unsigned lane0, unsigned lane1, unsigned lane2, unsigned lane3) |
| 2605 | { |
| 2606 | assert(lane0 < 4 && lane1 < 4 && lane2 < 4 && lane3 < 4); |
| 2607 | return _dpp_quad_perm | lane0 | (lane1 << 2) | (lane2 << 4) | (lane3 << 6); |
| 2608 | } |
| 2609 | |
| 2610 | static inline enum dpp_ctrl |
| 2611 | dpp_row_sl(unsigned amount) |
| 2612 | { |
| 2613 | assert(amount > 0 && amount < 16); |
| 2614 | return _dpp_row_sl | amount; |
| 2615 | } |
| 2616 | |
| 2617 | static inline enum dpp_ctrl |
| 2618 | dpp_row_sr(unsigned amount) |
| 2619 | { |
| 2620 | assert(amount > 0 && amount < 16); |
| 2621 | return _dpp_row_sr | amount; |
| 2622 | } |
| 2623 | |
| 2624 | static LLVMValueRef |
| 2625 | _ac_build_dpp(struct ac_llvm_context *ctx, LLVMValueRef old, LLVMValueRef src, |
| 2626 | enum dpp_ctrl dpp_ctrl, unsigned row_mask, unsigned bank_mask, |
| 2627 | bool bound_ctrl) |
| 2628 | { |
| 2629 | return ac_build_intrinsic(ctx, "llvm.amdgcn.update.dpp.i32", |
| 2630 | LLVMTypeOf(old), |
| 2631 | (LLVMValueRef[]) { |
| 2632 | old, src, |
| 2633 | LLVMConstInt(ctx->i32, dpp_ctrl, 0), |
| 2634 | LLVMConstInt(ctx->i32, row_mask, 0), |
| 2635 | LLVMConstInt(ctx->i32, bank_mask, 0), |
| 2636 | LLVMConstInt(ctx->i1, bound_ctrl, 0) }, |
| 2637 | 6, AC_FUNC_ATTR_READNONE | AC_FUNC_ATTR_CONVERGENT); |
| 2638 | } |
| 2639 | |
| 2640 | static LLVMValueRef |
| 2641 | ac_build_dpp(struct ac_llvm_context *ctx, LLVMValueRef old, LLVMValueRef src, |
| 2642 | enum dpp_ctrl dpp_ctrl, unsigned row_mask, unsigned bank_mask, |
| 2643 | bool bound_ctrl) |
| 2644 | { |
| 2645 | LLVMTypeRef src_type = LLVMTypeOf(src); |
| 2646 | src = ac_to_integer(ctx, src); |
| 2647 | old = ac_to_integer(ctx, old); |
| 2648 | unsigned bits = LLVMGetIntTypeWidth(LLVMTypeOf(src)); |
| 2649 | LLVMValueRef ret; |
| 2650 | if (bits == 32) { |
| 2651 | ret = _ac_build_dpp(ctx, old, src, dpp_ctrl, row_mask, |
| 2652 | bank_mask, bound_ctrl); |
| 2653 | } else { |
| 2654 | assert(bits % 32 == 0); |
| 2655 | LLVMTypeRef vec_type = LLVMVectorType(ctx->i32, bits / 32); |
| 2656 | LLVMValueRef src_vector = |
| 2657 | LLVMBuildBitCast(ctx->builder, src, vec_type, ""); |
| 2658 | LLVMValueRef old_vector = |
| 2659 | LLVMBuildBitCast(ctx->builder, old, vec_type, ""); |
| 2660 | ret = LLVMGetUndef(vec_type); |
| 2661 | for (unsigned i = 0; i < bits / 32; i++) { |
| 2662 | src = LLVMBuildExtractElement(ctx->builder, src_vector, |
| 2663 | LLVMConstInt(ctx->i32, i, |
| 2664 | 0), ""); |
| 2665 | old = LLVMBuildExtractElement(ctx->builder, old_vector, |
| 2666 | LLVMConstInt(ctx->i32, i, |
| 2667 | 0), ""); |
| 2668 | LLVMValueRef ret_comp = _ac_build_dpp(ctx, old, src, |
| 2669 | dpp_ctrl, |
| 2670 | row_mask, |
| 2671 | bank_mask, |
| 2672 | bound_ctrl); |
| 2673 | ret = LLVMBuildInsertElement(ctx->builder, ret, |
| 2674 | ret_comp, |
| 2675 | LLVMConstInt(ctx->i32, i, |
| 2676 | 0), ""); |
| 2677 | } |
| 2678 | } |
| 2679 | return LLVMBuildBitCast(ctx->builder, ret, src_type, ""); |
| 2680 | } |
| 2681 | |
| 2682 | static inline unsigned |
| 2683 | ds_pattern_bitmode(unsigned and_mask, unsigned or_mask, unsigned xor_mask) |
| 2684 | { |
| 2685 | assert(and_mask < 32 && or_mask < 32 && xor_mask < 32); |
| 2686 | return and_mask | (or_mask << 5) | (xor_mask << 10); |
| 2687 | } |
| 2688 | |
| 2689 | static LLVMValueRef |
| 2690 | _ac_build_ds_swizzle(struct ac_llvm_context *ctx, LLVMValueRef src, unsigned mask) |
| 2691 | { |
| 2692 | return ac_build_intrinsic(ctx, "llvm.amdgcn.ds.swizzle", |
| 2693 | LLVMTypeOf(src), (LLVMValueRef []) { |
| 2694 | src, LLVMConstInt(ctx->i32, mask, 0) }, |
| 2695 | 2, AC_FUNC_ATTR_READNONE | AC_FUNC_ATTR_CONVERGENT); |
| 2696 | } |
| 2697 | |
| 2698 | LLVMValueRef |
| 2699 | ac_build_ds_swizzle(struct ac_llvm_context *ctx, LLVMValueRef src, unsigned mask) |
| 2700 | { |
| 2701 | LLVMTypeRef src_type = LLVMTypeOf(src); |
| 2702 | src = ac_to_integer(ctx, src); |
| 2703 | unsigned bits = LLVMGetIntTypeWidth(LLVMTypeOf(src)); |
| 2704 | LLVMValueRef ret; |
| 2705 | if (bits == 32) { |
| 2706 | ret = _ac_build_ds_swizzle(ctx, src, mask); |
| 2707 | } else { |
| 2708 | assert(bits % 32 == 0); |
| 2709 | LLVMTypeRef vec_type = LLVMVectorType(ctx->i32, bits / 32); |
| 2710 | LLVMValueRef src_vector = |
| 2711 | LLVMBuildBitCast(ctx->builder, src, vec_type, ""); |
| 2712 | ret = LLVMGetUndef(vec_type); |
| 2713 | for (unsigned i = 0; i < bits / 32; i++) { |
| 2714 | src = LLVMBuildExtractElement(ctx->builder, src_vector, |
| 2715 | LLVMConstInt(ctx->i32, i, |
| 2716 | 0), ""); |
| 2717 | LLVMValueRef ret_comp = _ac_build_ds_swizzle(ctx, src, |
| 2718 | mask); |
| 2719 | ret = LLVMBuildInsertElement(ctx->builder, ret, |
| 2720 | ret_comp, |
| 2721 | LLVMConstInt(ctx->i32, i, |
| 2722 | 0), ""); |
| 2723 | } |
| 2724 | } |
| 2725 | return LLVMBuildBitCast(ctx->builder, ret, src_type, ""); |
| 2726 | } |
| 2727 | |
| 2728 | static LLVMValueRef |
| 2729 | ac_build_wwm(struct ac_llvm_context *ctx, LLVMValueRef src) |
| 2730 | { |
| 2731 | char name[32], type[8]; |
| 2732 | ac_build_type_name_for_intr(LLVMTypeOf(src), type, sizeof(type)); |
| 2733 | snprintf(name, sizeof(name), "llvm.amdgcn.wwm.%s", type); |
| 2734 | return ac_build_intrinsic(ctx, name, LLVMTypeOf(src), |
| 2735 | (LLVMValueRef []) { src }, 1, |
| 2736 | AC_FUNC_ATTR_READNONE); |
| 2737 | } |
| 2738 | |
| 2739 | static LLVMValueRef |
| 2740 | ac_build_set_inactive(struct ac_llvm_context *ctx, LLVMValueRef src, |
| 2741 | LLVMValueRef inactive) |
| 2742 | { |
| 2743 | char name[32], type[8]; |
| 2744 | LLVMTypeRef src_type = LLVMTypeOf(src); |
| 2745 | src = ac_to_integer(ctx, src); |
| 2746 | inactive = ac_to_integer(ctx, inactive); |
| 2747 | ac_build_type_name_for_intr(LLVMTypeOf(src), type, sizeof(type)); |
| 2748 | snprintf(name, sizeof(name), "llvm.amdgcn.set.inactive.%s", type); |
| 2749 | LLVMValueRef ret = |
| 2750 | ac_build_intrinsic(ctx, name, |
| 2751 | LLVMTypeOf(src), (LLVMValueRef []) { |
| 2752 | src, inactive }, 2, |
| 2753 | AC_FUNC_ATTR_READNONE | |
| 2754 | AC_FUNC_ATTR_CONVERGENT); |
| 2755 | return LLVMBuildBitCast(ctx->builder, ret, src_type, ""); |
| 2756 | } |
| 2757 | |
| 2758 | static LLVMValueRef |
| 2759 | get_reduction_identity(struct ac_llvm_context *ctx, nir_op op, unsigned type_size) |
| 2760 | { |
| 2761 | if (type_size == 4) { |
| 2762 | switch (op) { |
| 2763 | case nir_op_iadd: return ctx->i32_0; |
| 2764 | case nir_op_fadd: return ctx->f32_0; |
| 2765 | case nir_op_imul: return ctx->i32_1; |
| 2766 | case nir_op_fmul: return ctx->f32_1; |
| 2767 | case nir_op_imin: return LLVMConstInt(ctx->i32, INT32_MAX, 0); |
| 2768 | case nir_op_umin: return LLVMConstInt(ctx->i32, UINT32_MAX, 0); |
| 2769 | case nir_op_fmin: return LLVMConstReal(ctx->f32, INFINITY); |
| 2770 | case nir_op_imax: return LLVMConstInt(ctx->i32, INT32_MIN, 0); |
| 2771 | case nir_op_umax: return ctx->i32_0; |
| 2772 | case nir_op_fmax: return LLVMConstReal(ctx->f32, -INFINITY); |
| 2773 | case nir_op_iand: return LLVMConstInt(ctx->i32, -1, 0); |
| 2774 | case nir_op_ior: return ctx->i32_0; |
| 2775 | case nir_op_ixor: return ctx->i32_0; |
| 2776 | default: |
| 2777 | unreachable("bad reduction intrinsic"); |
| 2778 | } |
| 2779 | } else { /* type_size == 64bit */ |
| 2780 | switch (op) { |
| 2781 | case nir_op_iadd: return ctx->i64_0; |
| 2782 | case nir_op_fadd: return ctx->f64_0; |
| 2783 | case nir_op_imul: return ctx->i64_1; |
| 2784 | case nir_op_fmul: return ctx->f64_1; |
| 2785 | case nir_op_imin: return LLVMConstInt(ctx->i64, INT64_MAX, 0); |
| 2786 | case nir_op_umin: return LLVMConstInt(ctx->i64, UINT64_MAX, 0); |
| 2787 | case nir_op_fmin: return LLVMConstReal(ctx->f64, INFINITY); |
| 2788 | case nir_op_imax: return LLVMConstInt(ctx->i64, INT64_MIN, 0); |
| 2789 | case nir_op_umax: return ctx->i64_0; |
| 2790 | case nir_op_fmax: return LLVMConstReal(ctx->f64, -INFINITY); |
| 2791 | case nir_op_iand: return LLVMConstInt(ctx->i64, -1, 0); |
| 2792 | case nir_op_ior: return ctx->i64_0; |
| 2793 | case nir_op_ixor: return ctx->i64_0; |
| 2794 | default: |
| 2795 | unreachable("bad reduction intrinsic"); |
| 2796 | } |
| 2797 | } |
| 2798 | } |
| 2799 | |
| 2800 | static LLVMValueRef |
| 2801 | ac_build_alu_op(struct ac_llvm_context *ctx, LLVMValueRef lhs, LLVMValueRef rhs, nir_op op) |
| 2802 | { |
| 2803 | bool _64bit = ac_get_type_size(LLVMTypeOf(lhs)) == 8; |
| 2804 | switch (op) { |
| 2805 | case nir_op_iadd: return LLVMBuildAdd(ctx->builder, lhs, rhs, ""); |
| 2806 | case nir_op_fadd: return LLVMBuildFAdd(ctx->builder, lhs, rhs, ""); |
| 2807 | case nir_op_imul: return LLVMBuildMul(ctx->builder, lhs, rhs, ""); |
| 2808 | case nir_op_fmul: return LLVMBuildFMul(ctx->builder, lhs, rhs, ""); |
| 2809 | case nir_op_imin: return LLVMBuildSelect(ctx->builder, |
| 2810 | LLVMBuildICmp(ctx->builder, LLVMIntSLT, lhs, rhs, ""), |
| 2811 | lhs, rhs, ""); |
| 2812 | case nir_op_umin: return LLVMBuildSelect(ctx->builder, |
| 2813 | LLVMBuildICmp(ctx->builder, LLVMIntULT, lhs, rhs, ""), |
| 2814 | lhs, rhs, ""); |
| 2815 | case nir_op_fmin: return ac_build_intrinsic(ctx, |
| 2816 | _64bit ? "llvm.minnum.f64" : "llvm.minnum.f32", |
| 2817 | _64bit ? ctx->f64 : ctx->f32, |
| 2818 | (LLVMValueRef[]){lhs, rhs}, 2, AC_FUNC_ATTR_READNONE); |
| 2819 | case nir_op_imax: return LLVMBuildSelect(ctx->builder, |
| 2820 | LLVMBuildICmp(ctx->builder, LLVMIntSGT, lhs, rhs, ""), |
| 2821 | lhs, rhs, ""); |
| 2822 | case nir_op_umax: return LLVMBuildSelect(ctx->builder, |
| 2823 | LLVMBuildICmp(ctx->builder, LLVMIntUGT, lhs, rhs, ""), |
| 2824 | lhs, rhs, ""); |
| 2825 | case nir_op_fmax: return ac_build_intrinsic(ctx, |
| 2826 | _64bit ? "llvm.maxnum.f64" : "llvm.maxnum.f32", |
| 2827 | _64bit ? ctx->f64 : ctx->f32, |
| 2828 | (LLVMValueRef[]){lhs, rhs}, 2, AC_FUNC_ATTR_READNONE); |
| 2829 | case nir_op_iand: return LLVMBuildAnd(ctx->builder, lhs, rhs, ""); |
| 2830 | case nir_op_ior: return LLVMBuildOr(ctx->builder, lhs, rhs, ""); |
| 2831 | case nir_op_ixor: return LLVMBuildXor(ctx->builder, lhs, rhs, ""); |
| 2832 | default: |
| 2833 | unreachable("bad reduction intrinsic"); |
| 2834 | } |
| 2835 | } |
| 2836 | |
| 2837 | /* TODO: add inclusive and excluse scan functions for SI chip class. */ |
| 2838 | static LLVMValueRef |
| 2839 | ac_build_scan(struct ac_llvm_context *ctx, nir_op op, LLVMValueRef src, LLVMValueRef identity) |
| 2840 | { |
| 2841 | LLVMValueRef result, tmp; |
| 2842 | result = src; |
| 2843 | tmp = ac_build_dpp(ctx, identity, src, dpp_row_sr(1), 0xf, 0xf, false); |
| 2844 | result = ac_build_alu_op(ctx, result, tmp, op); |
| 2845 | tmp = ac_build_dpp(ctx, identity, src, dpp_row_sr(2), 0xf, 0xf, false); |
| 2846 | result = ac_build_alu_op(ctx, result, tmp, op); |
| 2847 | tmp = ac_build_dpp(ctx, identity, src, dpp_row_sr(3), 0xf, 0xf, false); |
| 2848 | result = ac_build_alu_op(ctx, result, tmp, op); |
| 2849 | tmp = ac_build_dpp(ctx, identity, result, dpp_row_sr(4), 0xf, 0xe, false); |
| 2850 | result = ac_build_alu_op(ctx, result, tmp, op); |
| 2851 | tmp = ac_build_dpp(ctx, identity, result, dpp_row_sr(8), 0xf, 0xc, false); |
| 2852 | result = ac_build_alu_op(ctx, result, tmp, op); |
| 2853 | tmp = ac_build_dpp(ctx, identity, result, dpp_row_bcast15, 0xa, 0xf, false); |
| 2854 | result = ac_build_alu_op(ctx, result, tmp, op); |
| 2855 | tmp = ac_build_dpp(ctx, identity, result, dpp_row_bcast31, 0xc, 0xf, false); |
| 2856 | result = ac_build_alu_op(ctx, result, tmp, op); |
| 2857 | return result; |
| 2858 | } |
| 2859 | |
| 2860 | LLVMValueRef |
| 2861 | ac_build_inclusive_scan(struct ac_llvm_context *ctx, LLVMValueRef src, nir_op op) |
| 2862 | { |
| 2863 | ac_build_optimization_barrier(ctx, &src); |
| 2864 | LLVMValueRef result; |
| 2865 | LLVMValueRef identity = get_reduction_identity(ctx, op, |
| 2866 | ac_get_type_size(LLVMTypeOf(src))); |
| 2867 | result = LLVMBuildBitCast(ctx->builder, |
| 2868 | ac_build_set_inactive(ctx, src, identity), |
| 2869 | LLVMTypeOf(identity), ""); |
| 2870 | result = ac_build_scan(ctx, op, result, identity); |
| 2871 | |
| 2872 | return ac_build_wwm(ctx, result); |
| 2873 | } |
| 2874 | |
| 2875 | LLVMValueRef |
| 2876 | ac_build_exclusive_scan(struct ac_llvm_context *ctx, LLVMValueRef src, nir_op op) |
| 2877 | { |
| 2878 | ac_build_optimization_barrier(ctx, &src); |
| 2879 | LLVMValueRef result; |
| 2880 | LLVMValueRef identity = get_reduction_identity(ctx, op, |
| 2881 | ac_get_type_size(LLVMTypeOf(src))); |
| 2882 | result = LLVMBuildBitCast(ctx->builder, |
| 2883 | ac_build_set_inactive(ctx, src, identity), |
| 2884 | LLVMTypeOf(identity), ""); |
| 2885 | result = ac_build_dpp(ctx, identity, result, dpp_wf_sr1, 0xf, 0xf, false); |
| 2886 | result = ac_build_scan(ctx, op, result, identity); |
| 2887 | |
| 2888 | return ac_build_wwm(ctx, result); |
| 2889 | } |
| 2890 | |
| 2891 | LLVMValueRef |
| 2892 | ac_build_reduce(struct ac_llvm_context *ctx, LLVMValueRef src, nir_op op, unsigned cluster_size) |
| 2893 | { |
| 2894 | if (cluster_size == 1) return src; |
| 2895 | ac_build_optimization_barrier(ctx, &src); |
| 2896 | LLVMValueRef result, swap; |
| 2897 | LLVMValueRef identity = get_reduction_identity(ctx, op, |
| 2898 | ac_get_type_size(LLVMTypeOf(src))); |
| 2899 | result = LLVMBuildBitCast(ctx->builder, |
| 2900 | ac_build_set_inactive(ctx, src, identity), |
| 2901 | LLVMTypeOf(identity), ""); |
| 2902 | swap = ac_build_quad_swizzle(ctx, result, 1, 0, 3, 2); |
| 2903 | result = ac_build_alu_op(ctx, result, swap, op); |
| 2904 | if (cluster_size == 2) return ac_build_wwm(ctx, result); |
| 2905 | |
| 2906 | swap = ac_build_quad_swizzle(ctx, result, 2, 3, 0, 1); |
| 2907 | result = ac_build_alu_op(ctx, result, swap, op); |
| 2908 | if (cluster_size == 4) return ac_build_wwm(ctx, result); |
| 2909 | |
| 2910 | if (ctx->chip_class >= VI) |
| 2911 | swap = ac_build_dpp(ctx, identity, result, dpp_row_half_mirror, 0xf, 0xf, false); |
| 2912 | else |
| 2913 | swap = ac_build_ds_swizzle(ctx, result, ds_pattern_bitmode(0x1f, 0, 0x04)); |
| 2914 | result = ac_build_alu_op(ctx, result, swap, op); |
| 2915 | if (cluster_size == 8) return ac_build_wwm(ctx, result); |
| 2916 | |
| 2917 | if (ctx->chip_class >= VI) |
| 2918 | swap = ac_build_dpp(ctx, identity, result, dpp_row_mirror, 0xf, 0xf, false); |
| 2919 | else |
| 2920 | swap = ac_build_ds_swizzle(ctx, result, ds_pattern_bitmode(0x1f, 0, 0x08)); |
| 2921 | result = ac_build_alu_op(ctx, result, swap, op); |
| 2922 | if (cluster_size == 16) return ac_build_wwm(ctx, result); |
| 2923 | |
| 2924 | if (ctx->chip_class >= VI && cluster_size != 32) |
| 2925 | swap = ac_build_dpp(ctx, identity, result, dpp_row_bcast15, 0xa, 0xf, false); |
| 2926 | else |
| 2927 | swap = ac_build_ds_swizzle(ctx, result, ds_pattern_bitmode(0x1f, 0, 0x10)); |
| 2928 | result = ac_build_alu_op(ctx, result, swap, op); |
| 2929 | if (cluster_size == 32) return ac_build_wwm(ctx, result); |
| 2930 | |
| 2931 | if (ctx->chip_class >= VI) { |
| 2932 | swap = ac_build_dpp(ctx, identity, result, dpp_row_bcast31, 0xc, 0xf, false); |
| 2933 | result = ac_build_alu_op(ctx, result, swap, op); |
| 2934 | result = ac_build_readlane(ctx, result, LLVMConstInt(ctx->i32, 63, 0)); |
| 2935 | return ac_build_wwm(ctx, result); |
| 2936 | } else { |
| 2937 | swap = ac_build_readlane(ctx, result, ctx->i32_0); |
| 2938 | result = ac_build_readlane(ctx, result, LLVMConstInt(ctx->i32, 32, 0)); |
| 2939 | result = ac_build_alu_op(ctx, result, swap, op); |
| 2940 | return ac_build_wwm(ctx, result); |
| 2941 | } |
| 2942 | } |
| 2943 | |
| 2944 | LLVMValueRef |
| 2945 | ac_build_quad_swizzle(struct ac_llvm_context *ctx, LLVMValueRef src, |
| 2946 | unsigned lane0, unsigned lane1, unsigned lane2, unsigned lane3) |
| 2947 | { |
| 2948 | unsigned mask = dpp_quad_perm(lane0, lane1, lane2, lane3); |
| 2949 | if (ctx->chip_class >= VI && HAVE_LLVM >= 0x0600) { |
| 2950 | return ac_build_dpp(ctx, src, src, mask, 0xf, 0xf, false); |
| 2951 | } else { |
| 2952 | return ac_build_ds_swizzle(ctx, src, (1 << 15) | mask); |
| 2953 | } |
| 2954 | } |
| 2955 | |
| 2956 | LLVMValueRef |
| 2957 | ac_build_shuffle(struct ac_llvm_context *ctx, LLVMValueRef src, LLVMValueRef index) |
| 2958 | { |
| 2959 | index = LLVMBuildMul(ctx->builder, index, LLVMConstInt(ctx->i32, 4, 0), ""); |
| 2960 | return ac_build_intrinsic(ctx, |
| 2961 | "llvm.amdgcn.ds.bpermute", ctx->i32, |
| 2962 | (LLVMValueRef []) {index, src}, 2, |
| 2963 | AC_FUNC_ATTR_READNONE | |
| 2964 | AC_FUNC_ATTR_CONVERGENT); |
| 2965 | } |