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" |
Nicolai Hähnle | 625dcbb | 2018-03-23 11:20:24 +0100 | [diff] [blame] | 40 | #include "util/u_math.h" |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 41 | #include "sid.h" |
| 42 | |
Dave Airlie | e265917 | 2017-04-25 23:33:29 +0100 | [diff] [blame] | 43 | #include "shader_enums.h" |
| 44 | |
Timothy Arceri | 42627da | 2018-03-07 10:53:34 +1100 | [diff] [blame] | 45 | #define AC_LLVM_INITIAL_CF_DEPTH 4 |
| 46 | |
| 47 | /* Data for if/else/endif and bgnloop/endloop control flow structures. |
| 48 | */ |
| 49 | struct ac_llvm_flow { |
| 50 | /* Loop exit or next part of if/else/endif. */ |
| 51 | LLVMBasicBlockRef next_block; |
| 52 | LLVMBasicBlockRef loop_entry_block; |
| 53 | }; |
| 54 | |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 55 | /* Initialize module-independent parts of the context. |
| 56 | * |
| 57 | * The caller is responsible for initializing ctx::module and ctx::builder. |
| 58 | */ |
| 59 | void |
Marek Olšák | 4695984 | 2018-07-04 01:37:30 -0400 | [diff] [blame^] | 60 | ac_llvm_context_init(struct ac_llvm_context *ctx, |
Samuel Pitoiset | 03ef264 | 2017-12-21 17:53:14 +0100 | [diff] [blame] | 61 | enum chip_class chip_class, enum radeon_family family) |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 62 | { |
| 63 | LLVMValueRef args[1]; |
| 64 | |
Marek Olšák | 4695984 | 2018-07-04 01:37:30 -0400 | [diff] [blame^] | 65 | ctx->context = LLVMContextCreate(); |
| 66 | |
Nicolai Hähnle | 3db86d8 | 2017-09-13 14:36:23 +0200 | [diff] [blame] | 67 | ctx->chip_class = chip_class; |
Samuel Pitoiset | 03ef264 | 2017-12-21 17:53:14 +0100 | [diff] [blame] | 68 | ctx->family = family; |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 69 | ctx->module = NULL; |
| 70 | ctx->builder = NULL; |
| 71 | |
| 72 | ctx->voidt = LLVMVoidTypeInContext(ctx->context); |
| 73 | ctx->i1 = LLVMInt1TypeInContext(ctx->context); |
| 74 | ctx->i8 = LLVMInt8TypeInContext(ctx->context); |
Nicolai Hähnle | 7bf8c94 | 2017-03-30 14:10:26 +0200 | [diff] [blame] | 75 | ctx->i16 = LLVMIntTypeInContext(ctx->context, 16); |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 76 | ctx->i32 = LLVMIntTypeInContext(ctx->context, 32); |
Nicolai Hähnle | 7bf8c94 | 2017-03-30 14:10:26 +0200 | [diff] [blame] | 77 | ctx->i64 = LLVMIntTypeInContext(ctx->context, 64); |
Marek Olšák | 931ec80 | 2018-01-01 21:04:22 +0100 | [diff] [blame] | 78 | ctx->intptr = HAVE_32BIT_POINTERS ? ctx->i32 : ctx->i64; |
Nicolai Hähnle | 7bf8c94 | 2017-03-30 14:10:26 +0200 | [diff] [blame] | 79 | ctx->f16 = LLVMHalfTypeInContext(ctx->context); |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 80 | ctx->f32 = LLVMFloatTypeInContext(ctx->context); |
Nicolai Hähnle | 7bf8c94 | 2017-03-30 14:10:26 +0200 | [diff] [blame] | 81 | ctx->f64 = LLVMDoubleTypeInContext(ctx->context); |
Marek Olšák | 847d0a3 | 2018-01-02 04:34:53 +0100 | [diff] [blame] | 82 | ctx->v2i16 = LLVMVectorType(ctx->i16, 2); |
Timothy Arceri | 309a514 | 2017-11-02 12:59:00 +1100 | [diff] [blame] | 83 | ctx->v2i32 = LLVMVectorType(ctx->i32, 2); |
Timothy Arceri | ee376ac | 2017-11-02 13:02:54 +1100 | [diff] [blame] | 84 | ctx->v3i32 = LLVMVectorType(ctx->i32, 3); |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 85 | ctx->v4i32 = LLVMVectorType(ctx->i32, 4); |
Timothy Arceri | 7f49667 | 2017-11-02 13:24:27 +1100 | [diff] [blame] | 86 | ctx->v2f32 = LLVMVectorType(ctx->f32, 2); |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 87 | ctx->v4f32 = LLVMVectorType(ctx->f32, 4); |
Nicolai Hähnle | edfd3be | 2017-06-08 20:04:28 +0200 | [diff] [blame] | 88 | ctx->v8i32 = LLVMVectorType(ctx->i32, 8); |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 89 | |
Nicolai Hähnle | 331a574 | 2017-05-18 22:02:48 +0200 | [diff] [blame] | 90 | ctx->i32_0 = LLVMConstInt(ctx->i32, 0, false); |
| 91 | ctx->i32_1 = LLVMConstInt(ctx->i32, 1, false); |
Timothy Arceri | 38876c8 | 2018-01-14 10:06:36 +1100 | [diff] [blame] | 92 | ctx->i64_0 = LLVMConstInt(ctx->i64, 0, false); |
| 93 | ctx->i64_1 = LLVMConstInt(ctx->i64, 1, false); |
Nicolai Hähnle | 331a574 | 2017-05-18 22:02:48 +0200 | [diff] [blame] | 94 | ctx->f32_0 = LLVMConstReal(ctx->f32, 0.0); |
| 95 | ctx->f32_1 = LLVMConstReal(ctx->f32, 1.0); |
Timothy Arceri | d7b6b8b | 2018-01-11 22:09:35 +1100 | [diff] [blame] | 96 | ctx->f64_0 = LLVMConstReal(ctx->f64, 0.0); |
Timothy Arceri | c0eb304 | 2018-01-11 17:03:36 +1100 | [diff] [blame] | 97 | ctx->f64_1 = LLVMConstReal(ctx->f64, 1.0); |
Nicolai Hähnle | 331a574 | 2017-05-18 22:02:48 +0200 | [diff] [blame] | 98 | |
Dave Airlie | a76b6c2 | 2017-10-26 15:20:15 +1000 | [diff] [blame] | 99 | ctx->i1false = LLVMConstInt(ctx->i1, 0, false); |
| 100 | ctx->i1true = LLVMConstInt(ctx->i1, 1, false); |
| 101 | |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 102 | ctx->range_md_kind = LLVMGetMDKindIDInContext(ctx->context, |
| 103 | "range", 5); |
| 104 | |
| 105 | ctx->invariant_load_md_kind = LLVMGetMDKindIDInContext(ctx->context, |
| 106 | "invariant.load", 14); |
| 107 | |
| 108 | ctx->fpmath_md_kind = LLVMGetMDKindIDInContext(ctx->context, "fpmath", 6); |
| 109 | |
| 110 | args[0] = LLVMConstReal(ctx->f32, 2.5); |
| 111 | ctx->fpmath_md_2p5_ulp = LLVMMDNodeInContext(ctx->context, args, 1); |
| 112 | |
| 113 | ctx->uniform_md_kind = LLVMGetMDKindIDInContext(ctx->context, |
| 114 | "amdgpu.uniform", 14); |
| 115 | |
| 116 | ctx->empty_md = LLVMMDNodeInContext(ctx->context, NULL, 0); |
| 117 | } |
| 118 | |
Timothy Arceri | 42627da | 2018-03-07 10:53:34 +1100 | [diff] [blame] | 119 | void |
| 120 | ac_llvm_context_dispose(struct ac_llvm_context *ctx) |
| 121 | { |
| 122 | free(ctx->flow); |
| 123 | ctx->flow = NULL; |
| 124 | ctx->flow_depth_max = 0; |
| 125 | } |
| 126 | |
Timothy Arceri | b99ebaa | 2017-12-11 12:54:47 +1100 | [diff] [blame] | 127 | int |
| 128 | ac_get_llvm_num_components(LLVMValueRef value) |
| 129 | { |
| 130 | LLVMTypeRef type = LLVMTypeOf(value); |
| 131 | unsigned num_components = LLVMGetTypeKind(type) == LLVMVectorTypeKind |
| 132 | ? LLVMGetVectorSize(type) |
| 133 | : 1; |
| 134 | return num_components; |
| 135 | } |
| 136 | |
| 137 | LLVMValueRef |
| 138 | ac_llvm_extract_elem(struct ac_llvm_context *ac, |
| 139 | LLVMValueRef value, |
| 140 | int index) |
| 141 | { |
Timothy Arceri | 4a0c24f2 | 2017-12-13 18:46:56 +1100 | [diff] [blame] | 142 | if (LLVMGetTypeKind(LLVMTypeOf(value)) != LLVMVectorTypeKind) { |
| 143 | assert(index == 0); |
Timothy Arceri | b99ebaa | 2017-12-11 12:54:47 +1100 | [diff] [blame] | 144 | return value; |
Timothy Arceri | 4a0c24f2 | 2017-12-13 18:46:56 +1100 | [diff] [blame] | 145 | } |
Timothy Arceri | b99ebaa | 2017-12-11 12:54:47 +1100 | [diff] [blame] | 146 | |
| 147 | return LLVMBuildExtractElement(ac->builder, value, |
| 148 | LLVMConstInt(ac->i32, index, false), ""); |
| 149 | } |
| 150 | |
Timothy Arceri | a9f6b39 | 2018-02-06 14:38:19 +1100 | [diff] [blame] | 151 | int |
| 152 | ac_get_elem_bits(struct ac_llvm_context *ctx, LLVMTypeRef type) |
| 153 | { |
| 154 | if (LLVMGetTypeKind(type) == LLVMVectorTypeKind) |
| 155 | type = LLVMGetElementType(type); |
| 156 | |
| 157 | if (LLVMGetTypeKind(type) == LLVMIntegerTypeKind) |
| 158 | return LLVMGetIntTypeWidth(type); |
| 159 | |
| 160 | if (type == ctx->f16) |
| 161 | return 16; |
| 162 | if (type == ctx->f32) |
| 163 | return 32; |
| 164 | if (type == ctx->f64) |
| 165 | return 64; |
| 166 | |
| 167 | unreachable("Unhandled type kind in get_elem_bits"); |
| 168 | } |
| 169 | |
Connor Abbott | c181d4f | 2017-06-05 14:37:01 -0700 | [diff] [blame] | 170 | unsigned |
| 171 | ac_get_type_size(LLVMTypeRef type) |
| 172 | { |
| 173 | LLVMTypeKind kind = LLVMGetTypeKind(type); |
| 174 | |
| 175 | switch (kind) { |
| 176 | case LLVMIntegerTypeKind: |
| 177 | return LLVMGetIntTypeWidth(type) / 8; |
| 178 | case LLVMFloatTypeKind: |
| 179 | return 4; |
Connor Abbott | fafa299 | 2017-07-18 20:44:47 -0700 | [diff] [blame] | 180 | case LLVMDoubleTypeKind: |
Marek Olšák | 931ec80 | 2018-01-01 21:04:22 +0100 | [diff] [blame] | 181 | return 8; |
Connor Abbott | c181d4f | 2017-06-05 14:37:01 -0700 | [diff] [blame] | 182 | case LLVMPointerTypeKind: |
Marek Olšák | 931ec80 | 2018-01-01 21:04:22 +0100 | [diff] [blame] | 183 | if (LLVMGetPointerAddressSpace(type) == AC_CONST_32BIT_ADDR_SPACE) |
| 184 | return 4; |
Connor Abbott | c181d4f | 2017-06-05 14:37:01 -0700 | [diff] [blame] | 185 | return 8; |
| 186 | case LLVMVectorTypeKind: |
| 187 | return LLVMGetVectorSize(type) * |
| 188 | ac_get_type_size(LLVMGetElementType(type)); |
| 189 | case LLVMArrayTypeKind: |
| 190 | return LLVMGetArrayLength(type) * |
| 191 | ac_get_type_size(LLVMGetElementType(type)); |
| 192 | default: |
| 193 | assert(0); |
| 194 | return 0; |
| 195 | } |
| 196 | } |
| 197 | |
Connor Abbott | 50967cd | 2017-07-18 17:32:10 -0700 | [diff] [blame] | 198 | static LLVMTypeRef to_integer_type_scalar(struct ac_llvm_context *ctx, LLVMTypeRef t) |
| 199 | { |
| 200 | if (t == ctx->f16 || t == ctx->i16) |
| 201 | return ctx->i16; |
| 202 | else if (t == ctx->f32 || t == ctx->i32) |
| 203 | return ctx->i32; |
| 204 | else if (t == ctx->f64 || t == ctx->i64) |
| 205 | return ctx->i64; |
| 206 | else |
| 207 | unreachable("Unhandled integer size"); |
| 208 | } |
| 209 | |
| 210 | LLVMTypeRef |
| 211 | ac_to_integer_type(struct ac_llvm_context *ctx, LLVMTypeRef t) |
| 212 | { |
| 213 | if (LLVMGetTypeKind(t) == LLVMVectorTypeKind) { |
| 214 | LLVMTypeRef elem_type = LLVMGetElementType(t); |
| 215 | return LLVMVectorType(to_integer_type_scalar(ctx, elem_type), |
| 216 | LLVMGetVectorSize(t)); |
| 217 | } |
| 218 | return to_integer_type_scalar(ctx, t); |
| 219 | } |
| 220 | |
| 221 | LLVMValueRef |
| 222 | ac_to_integer(struct ac_llvm_context *ctx, LLVMValueRef v) |
| 223 | { |
| 224 | LLVMTypeRef type = LLVMTypeOf(v); |
| 225 | return LLVMBuildBitCast(ctx->builder, v, ac_to_integer_type(ctx, type), ""); |
| 226 | } |
| 227 | |
| 228 | static LLVMTypeRef to_float_type_scalar(struct ac_llvm_context *ctx, LLVMTypeRef t) |
| 229 | { |
| 230 | if (t == ctx->i16 || t == ctx->f16) |
| 231 | return ctx->f16; |
| 232 | else if (t == ctx->i32 || t == ctx->f32) |
| 233 | return ctx->f32; |
| 234 | else if (t == ctx->i64 || t == ctx->f64) |
| 235 | return ctx->f64; |
| 236 | else |
| 237 | unreachable("Unhandled float size"); |
| 238 | } |
| 239 | |
| 240 | LLVMTypeRef |
| 241 | ac_to_float_type(struct ac_llvm_context *ctx, LLVMTypeRef t) |
| 242 | { |
| 243 | if (LLVMGetTypeKind(t) == LLVMVectorTypeKind) { |
| 244 | LLVMTypeRef elem_type = LLVMGetElementType(t); |
| 245 | return LLVMVectorType(to_float_type_scalar(ctx, elem_type), |
| 246 | LLVMGetVectorSize(t)); |
| 247 | } |
| 248 | return to_float_type_scalar(ctx, t); |
| 249 | } |
| 250 | |
| 251 | LLVMValueRef |
| 252 | ac_to_float(struct ac_llvm_context *ctx, LLVMValueRef v) |
| 253 | { |
| 254 | LLVMTypeRef type = LLVMTypeOf(v); |
| 255 | return LLVMBuildBitCast(ctx->builder, v, ac_to_float_type(ctx, type), ""); |
| 256 | } |
| 257 | |
| 258 | |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 259 | LLVMValueRef |
Marek Olšák | 7f1446a | 2017-02-26 00:41:37 +0100 | [diff] [blame] | 260 | ac_build_intrinsic(struct ac_llvm_context *ctx, const char *name, |
| 261 | LLVMTypeRef return_type, LLVMValueRef *params, |
| 262 | unsigned param_count, unsigned attrib_mask) |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 263 | { |
Marek Olšák | 940da36 | 2017-02-22 02:29:12 +0100 | [diff] [blame] | 264 | LLVMValueRef function, call; |
Marek Olšák | 3bf1e03 | 2018-02-02 19:26:49 +0100 | [diff] [blame] | 265 | bool set_callsite_attrs = !(attrib_mask & AC_FUNC_ATTR_LEGACY); |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 266 | |
| 267 | function = LLVMGetNamedFunction(ctx->module, name); |
| 268 | if (!function) { |
| 269 | LLVMTypeRef param_types[32], function_type; |
| 270 | unsigned i; |
| 271 | |
| 272 | assert(param_count <= 32); |
| 273 | |
| 274 | for (i = 0; i < param_count; ++i) { |
| 275 | assert(params[i]); |
| 276 | param_types[i] = LLVMTypeOf(params[i]); |
| 277 | } |
| 278 | function_type = |
| 279 | LLVMFunctionType(return_type, param_types, param_count, 0); |
| 280 | function = LLVMAddFunction(ctx->module, name, function_type); |
| 281 | |
| 282 | LLVMSetFunctionCallConv(function, LLVMCCallConv); |
| 283 | LLVMSetLinkage(function, LLVMExternalLinkage); |
| 284 | |
Marek Olšák | 940da36 | 2017-02-22 02:29:12 +0100 | [diff] [blame] | 285 | if (!set_callsite_attrs) |
| 286 | ac_add_func_attributes(ctx->context, function, attrib_mask); |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 287 | } |
Marek Olšák | 940da36 | 2017-02-22 02:29:12 +0100 | [diff] [blame] | 288 | |
| 289 | call = LLVMBuildCall(ctx->builder, function, params, param_count, ""); |
| 290 | if (set_callsite_attrs) |
| 291 | ac_add_func_attributes(ctx->context, call, attrib_mask); |
| 292 | return call; |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 293 | } |
| 294 | |
Marek Olšák | 9af0331 | 2017-02-23 22:58:49 +0100 | [diff] [blame] | 295 | /** |
| 296 | * Given the i32 or vNi32 \p type, generate the textual name (e.g. for use with |
| 297 | * intrinsic names). |
| 298 | */ |
| 299 | void ac_build_type_name_for_intr(LLVMTypeRef type, char *buf, unsigned bufsize) |
| 300 | { |
| 301 | LLVMTypeRef elem_type = type; |
| 302 | |
| 303 | assert(bufsize >= 8); |
| 304 | |
| 305 | if (LLVMGetTypeKind(type) == LLVMVectorTypeKind) { |
| 306 | int ret = snprintf(buf, bufsize, "v%u", |
| 307 | LLVMGetVectorSize(type)); |
| 308 | if (ret < 0) { |
| 309 | char *type_name = LLVMPrintTypeToString(type); |
| 310 | fprintf(stderr, "Error building type name for: %s\n", |
| 311 | type_name); |
| 312 | return; |
| 313 | } |
| 314 | elem_type = LLVMGetElementType(type); |
| 315 | buf += ret; |
| 316 | bufsize -= ret; |
| 317 | } |
| 318 | switch (LLVMGetTypeKind(elem_type)) { |
| 319 | default: break; |
| 320 | case LLVMIntegerTypeKind: |
| 321 | snprintf(buf, bufsize, "i%d", LLVMGetIntTypeWidth(elem_type)); |
| 322 | break; |
| 323 | case LLVMFloatTypeKind: |
| 324 | snprintf(buf, bufsize, "f32"); |
| 325 | break; |
| 326 | case LLVMDoubleTypeKind: |
| 327 | snprintf(buf, bufsize, "f64"); |
| 328 | break; |
| 329 | } |
| 330 | } |
| 331 | |
Nicolai Hähnle | 052b974 | 2017-09-29 11:17:03 +0200 | [diff] [blame] | 332 | /** |
| 333 | * Helper function that builds an LLVM IR PHI node and immediately adds |
| 334 | * incoming edges. |
| 335 | */ |
| 336 | LLVMValueRef |
| 337 | ac_build_phi(struct ac_llvm_context *ctx, LLVMTypeRef type, |
| 338 | unsigned count_incoming, LLVMValueRef *values, |
| 339 | LLVMBasicBlockRef *blocks) |
| 340 | { |
| 341 | LLVMValueRef phi = LLVMBuildPhi(ctx->builder, type, ""); |
| 342 | LLVMAddIncoming(phi, values, blocks, count_incoming); |
| 343 | return phi; |
| 344 | } |
| 345 | |
Connor Abbott | ac27fa7 | 2017-06-05 14:16:43 -0700 | [diff] [blame] | 346 | /* Prevent optimizations (at least of memory accesses) across the current |
| 347 | * point in the program by emitting empty inline assembly that is marked as |
| 348 | * having side effects. |
| 349 | * |
| 350 | * Optionally, a value can be passed through the inline assembly to prevent |
| 351 | * LLVM from hoisting calls to ReadNone functions. |
| 352 | */ |
| 353 | void |
| 354 | ac_build_optimization_barrier(struct ac_llvm_context *ctx, |
| 355 | LLVMValueRef *pvgpr) |
| 356 | { |
| 357 | static int counter = 0; |
| 358 | |
| 359 | LLVMBuilderRef builder = ctx->builder; |
| 360 | char code[16]; |
| 361 | |
| 362 | snprintf(code, sizeof(code), "; %d", p_atomic_inc_return(&counter)); |
| 363 | |
| 364 | if (!pvgpr) { |
| 365 | LLVMTypeRef ftype = LLVMFunctionType(ctx->voidt, NULL, 0, false); |
| 366 | LLVMValueRef inlineasm = LLVMConstInlineAsm(ftype, code, "", true, false); |
| 367 | LLVMBuildCall(builder, inlineasm, NULL, 0, ""); |
| 368 | } else { |
| 369 | LLVMTypeRef ftype = LLVMFunctionType(ctx->i32, &ctx->i32, 1, false); |
| 370 | LLVMValueRef inlineasm = LLVMConstInlineAsm(ftype, code, "=v,0", true, false); |
| 371 | LLVMValueRef vgpr = *pvgpr; |
| 372 | LLVMTypeRef vgpr_type = LLVMTypeOf(vgpr); |
| 373 | unsigned vgpr_size = ac_get_type_size(vgpr_type); |
| 374 | LLVMValueRef vgpr0; |
| 375 | |
| 376 | assert(vgpr_size % 4 == 0); |
| 377 | |
| 378 | vgpr = LLVMBuildBitCast(builder, vgpr, LLVMVectorType(ctx->i32, vgpr_size / 4), ""); |
| 379 | vgpr0 = LLVMBuildExtractElement(builder, vgpr, ctx->i32_0, ""); |
| 380 | vgpr0 = LLVMBuildCall(builder, inlineasm, &vgpr0, 1, ""); |
| 381 | vgpr = LLVMBuildInsertElement(builder, vgpr, vgpr0, ctx->i32_0, ""); |
| 382 | vgpr = LLVMBuildBitCast(builder, vgpr, vgpr_type, ""); |
| 383 | |
| 384 | *pvgpr = vgpr; |
| 385 | } |
| 386 | } |
| 387 | |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 388 | LLVMValueRef |
Timothy Arceri | b7b89bb | 2018-02-02 13:54:48 +1100 | [diff] [blame] | 389 | ac_build_shader_clock(struct ac_llvm_context *ctx) |
| 390 | { |
| 391 | LLVMValueRef tmp = ac_build_intrinsic(ctx, "llvm.readcyclecounter", |
| 392 | ctx->i64, NULL, 0, 0); |
| 393 | return LLVMBuildBitCast(ctx->builder, tmp, ctx->v2i32, ""); |
| 394 | } |
| 395 | |
| 396 | LLVMValueRef |
Connor Abbott | bd73b89 | 2017-06-05 15:20:04 -0700 | [diff] [blame] | 397 | ac_build_ballot(struct ac_llvm_context *ctx, |
| 398 | LLVMValueRef value) |
| 399 | { |
| 400 | LLVMValueRef args[3] = { |
| 401 | value, |
| 402 | ctx->i32_0, |
| 403 | LLVMConstInt(ctx->i32, LLVMIntNE, 0) |
| 404 | }; |
| 405 | |
| 406 | /* We currently have no other way to prevent LLVM from lifting the icmp |
| 407 | * calls to a dominating basic block. |
| 408 | */ |
| 409 | ac_build_optimization_barrier(ctx, &args[0]); |
| 410 | |
Daniel Schürmann | d19f20e | 2018-02-28 20:26:03 +0100 | [diff] [blame] | 411 | args[0] = ac_to_integer(ctx, args[0]); |
Connor Abbott | bd73b89 | 2017-06-05 15:20:04 -0700 | [diff] [blame] | 412 | |
| 413 | return ac_build_intrinsic(ctx, |
| 414 | "llvm.amdgcn.icmp.i32", |
| 415 | ctx->i64, args, 3, |
| 416 | AC_FUNC_ATTR_NOUNWIND | |
| 417 | AC_FUNC_ATTR_READNONE | |
| 418 | AC_FUNC_ATTR_CONVERGENT); |
| 419 | } |
| 420 | |
| 421 | LLVMValueRef |
Connor Abbott | b8a51c8 | 2017-06-06 16:40:26 -0700 | [diff] [blame] | 422 | ac_build_vote_all(struct ac_llvm_context *ctx, LLVMValueRef value) |
| 423 | { |
| 424 | LLVMValueRef active_set = ac_build_ballot(ctx, ctx->i32_1); |
| 425 | LLVMValueRef vote_set = ac_build_ballot(ctx, value); |
| 426 | return LLVMBuildICmp(ctx->builder, LLVMIntEQ, vote_set, active_set, ""); |
| 427 | } |
| 428 | |
| 429 | LLVMValueRef |
| 430 | ac_build_vote_any(struct ac_llvm_context *ctx, LLVMValueRef value) |
| 431 | { |
| 432 | LLVMValueRef vote_set = ac_build_ballot(ctx, value); |
| 433 | return LLVMBuildICmp(ctx->builder, LLVMIntNE, vote_set, |
| 434 | LLVMConstInt(ctx->i64, 0, 0), ""); |
| 435 | } |
| 436 | |
| 437 | LLVMValueRef |
| 438 | ac_build_vote_eq(struct ac_llvm_context *ctx, LLVMValueRef value) |
| 439 | { |
| 440 | LLVMValueRef active_set = ac_build_ballot(ctx, ctx->i32_1); |
| 441 | LLVMValueRef vote_set = ac_build_ballot(ctx, value); |
| 442 | |
| 443 | LLVMValueRef all = LLVMBuildICmp(ctx->builder, LLVMIntEQ, |
| 444 | vote_set, active_set, ""); |
| 445 | LLVMValueRef none = LLVMBuildICmp(ctx->builder, LLVMIntEQ, |
| 446 | vote_set, |
| 447 | LLVMConstInt(ctx->i64, 0, 0), ""); |
| 448 | return LLVMBuildOr(ctx->builder, all, none, ""); |
| 449 | } |
| 450 | |
| 451 | LLVMValueRef |
Timothy Arceri | caf15ce | 2017-11-10 13:55:48 +1100 | [diff] [blame] | 452 | ac_build_varying_gather_values(struct ac_llvm_context *ctx, LLVMValueRef *values, |
| 453 | unsigned value_count, unsigned component) |
| 454 | { |
| 455 | LLVMValueRef vec = NULL; |
| 456 | |
| 457 | if (value_count == 1) { |
| 458 | return values[component]; |
| 459 | } else if (!value_count) |
| 460 | unreachable("value_count is 0"); |
| 461 | |
| 462 | for (unsigned i = component; i < value_count + component; i++) { |
| 463 | LLVMValueRef value = values[i]; |
| 464 | |
Timothy Arceri | 5b9362c | 2018-01-19 16:48:43 +1100 | [diff] [blame] | 465 | if (i == component) |
Timothy Arceri | caf15ce | 2017-11-10 13:55:48 +1100 | [diff] [blame] | 466 | vec = LLVMGetUndef( LLVMVectorType(LLVMTypeOf(value), value_count)); |
| 467 | LLVMValueRef index = LLVMConstInt(ctx->i32, i - component, false); |
| 468 | vec = LLVMBuildInsertElement(ctx->builder, vec, value, index, ""); |
| 469 | } |
| 470 | return vec; |
| 471 | } |
| 472 | |
| 473 | LLVMValueRef |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 474 | ac_build_gather_values_extended(struct ac_llvm_context *ctx, |
| 475 | LLVMValueRef *values, |
| 476 | unsigned value_count, |
| 477 | unsigned value_stride, |
Nicolai Hähnle | ac2ab5a | 2017-06-25 13:04:51 +0200 | [diff] [blame] | 478 | bool load, |
| 479 | bool always_vector) |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 480 | { |
| 481 | LLVMBuilderRef builder = ctx->builder; |
Marek Olšák | c7878b0 | 2017-02-23 01:34:27 +0100 | [diff] [blame] | 482 | LLVMValueRef vec = NULL; |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 483 | unsigned i; |
| 484 | |
Nicolai Hähnle | ac2ab5a | 2017-06-25 13:04:51 +0200 | [diff] [blame] | 485 | if (value_count == 1 && !always_vector) { |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 486 | if (load) |
| 487 | return LLVMBuildLoad(builder, values[0], ""); |
| 488 | return values[0]; |
| 489 | } else if (!value_count) |
| 490 | unreachable("value_count is 0"); |
| 491 | |
| 492 | for (i = 0; i < value_count; i++) { |
| 493 | LLVMValueRef value = values[i * value_stride]; |
| 494 | if (load) |
| 495 | value = LLVMBuildLoad(builder, value, ""); |
| 496 | |
| 497 | if (!i) |
| 498 | vec = LLVMGetUndef( LLVMVectorType(LLVMTypeOf(value), value_count)); |
| 499 | LLVMValueRef index = LLVMConstInt(ctx->i32, i, false); |
| 500 | vec = LLVMBuildInsertElement(builder, vec, value, index, ""); |
| 501 | } |
| 502 | return vec; |
| 503 | } |
| 504 | |
| 505 | LLVMValueRef |
| 506 | ac_build_gather_values(struct ac_llvm_context *ctx, |
| 507 | LLVMValueRef *values, |
| 508 | unsigned value_count) |
| 509 | { |
Nicolai Hähnle | ac2ab5a | 2017-06-25 13:04:51 +0200 | [diff] [blame] | 510 | 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] | 511 | } |
| 512 | |
Marek Olšák | be973ed | 2018-01-30 18:34:25 +0100 | [diff] [blame] | 513 | /* Expand a scalar or vector to <4 x type> by filling the remaining channels |
| 514 | * with undef. Extract at most num_channels components from the input. |
| 515 | */ |
| 516 | LLVMValueRef ac_build_expand_to_vec4(struct ac_llvm_context *ctx, |
| 517 | LLVMValueRef value, |
| 518 | unsigned num_channels) |
| 519 | { |
| 520 | LLVMTypeRef elemtype; |
| 521 | LLVMValueRef chan[4]; |
| 522 | |
| 523 | if (LLVMGetTypeKind(LLVMTypeOf(value)) == LLVMVectorTypeKind) { |
| 524 | unsigned vec_size = LLVMGetVectorSize(LLVMTypeOf(value)); |
| 525 | num_channels = MIN2(num_channels, vec_size); |
| 526 | |
| 527 | if (num_channels >= 4) |
| 528 | return value; |
| 529 | |
| 530 | for (unsigned i = 0; i < num_channels; i++) |
| 531 | chan[i] = ac_llvm_extract_elem(ctx, value, i); |
| 532 | |
| 533 | elemtype = LLVMGetElementType(LLVMTypeOf(value)); |
| 534 | } else { |
| 535 | if (num_channels) { |
| 536 | assert(num_channels == 1); |
| 537 | chan[0] = value; |
| 538 | } |
| 539 | elemtype = LLVMTypeOf(value); |
| 540 | } |
| 541 | |
| 542 | while (num_channels < 4) |
| 543 | chan[num_channels++] = LLVMGetUndef(elemtype); |
| 544 | |
| 545 | return ac_build_gather_values(ctx, chan, 4); |
| 546 | } |
| 547 | |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 548 | LLVMValueRef |
Marek Olšák | 7f1446a | 2017-02-26 00:41:37 +0100 | [diff] [blame] | 549 | ac_build_fdiv(struct ac_llvm_context *ctx, |
| 550 | LLVMValueRef num, |
| 551 | LLVMValueRef den) |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 552 | { |
| 553 | LLVMValueRef ret = LLVMBuildFDiv(ctx->builder, num, den, ""); |
| 554 | |
Samuel Pitoiset | d43e72f | 2017-12-12 18:10:20 +0100 | [diff] [blame] | 555 | /* Use v_rcp_f32 instead of precise division. */ |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 556 | if (!LLVMIsConstant(ret)) |
| 557 | LLVMSetMetadata(ret, ctx->fpmath_md_kind, ctx->fpmath_md_2p5_ulp); |
| 558 | return ret; |
| 559 | } |
| 560 | |
| 561 | /* Coordinates for cube map selection. sc, tc, and ma are as in Table 8.27 |
| 562 | * of the OpenGL 4.5 (Compatibility Profile) specification, except ma is |
| 563 | * already multiplied by two. id is the cube face number. |
| 564 | */ |
| 565 | struct cube_selection_coords { |
| 566 | LLVMValueRef stc[2]; |
| 567 | LLVMValueRef ma; |
| 568 | LLVMValueRef id; |
| 569 | }; |
| 570 | |
| 571 | static void |
| 572 | build_cube_intrinsic(struct ac_llvm_context *ctx, |
| 573 | LLVMValueRef in[3], |
| 574 | struct cube_selection_coords *out) |
| 575 | { |
Marek Olšák | 12beef0 | 2017-04-25 02:18:10 +0200 | [diff] [blame] | 576 | LLVMTypeRef f32 = ctx->f32; |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 577 | |
Marek Olšák | 12beef0 | 2017-04-25 02:18:10 +0200 | [diff] [blame] | 578 | out->stc[1] = ac_build_intrinsic(ctx, "llvm.amdgcn.cubetc", |
| 579 | f32, in, 3, AC_FUNC_ATTR_READNONE); |
| 580 | out->stc[0] = ac_build_intrinsic(ctx, "llvm.amdgcn.cubesc", |
| 581 | f32, in, 3, AC_FUNC_ATTR_READNONE); |
| 582 | out->ma = ac_build_intrinsic(ctx, "llvm.amdgcn.cubema", |
| 583 | f32, in, 3, AC_FUNC_ATTR_READNONE); |
| 584 | out->id = ac_build_intrinsic(ctx, "llvm.amdgcn.cubeid", |
| 585 | f32, in, 3, AC_FUNC_ATTR_READNONE); |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 586 | } |
| 587 | |
| 588 | /** |
| 589 | * Build a manual selection sequence for cube face sc/tc coordinates and |
| 590 | * major axis vector (multiplied by 2 for consistency) for the given |
| 591 | * vec3 \p coords, for the face implied by \p selcoords. |
| 592 | * |
| 593 | * For the major axis, we always adjust the sign to be in the direction of |
| 594 | * selcoords.ma; i.e., a positive out_ma means that coords is pointed towards |
| 595 | * the selcoords major axis. |
| 596 | */ |
Nicolai Hähnle | a6ea4c1 | 2017-09-22 19:14:16 +0200 | [diff] [blame] | 597 | static void build_cube_select(struct ac_llvm_context *ctx, |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 598 | const struct cube_selection_coords *selcoords, |
| 599 | const LLVMValueRef *coords, |
| 600 | LLVMValueRef *out_st, |
| 601 | LLVMValueRef *out_ma) |
| 602 | { |
Nicolai Hähnle | a6ea4c1 | 2017-09-22 19:14:16 +0200 | [diff] [blame] | 603 | LLVMBuilderRef builder = ctx->builder; |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 604 | LLVMTypeRef f32 = LLVMTypeOf(coords[0]); |
| 605 | LLVMValueRef is_ma_positive; |
| 606 | LLVMValueRef sgn_ma; |
| 607 | LLVMValueRef is_ma_z, is_not_ma_z; |
| 608 | LLVMValueRef is_ma_y; |
| 609 | LLVMValueRef is_ma_x; |
| 610 | LLVMValueRef sgn; |
| 611 | LLVMValueRef tmp; |
| 612 | |
| 613 | is_ma_positive = LLVMBuildFCmp(builder, LLVMRealUGE, |
| 614 | selcoords->ma, LLVMConstReal(f32, 0.0), ""); |
| 615 | sgn_ma = LLVMBuildSelect(builder, is_ma_positive, |
| 616 | LLVMConstReal(f32, 1.0), LLVMConstReal(f32, -1.0), ""); |
| 617 | |
| 618 | is_ma_z = LLVMBuildFCmp(builder, LLVMRealUGE, selcoords->id, LLVMConstReal(f32, 4.0), ""); |
| 619 | is_not_ma_z = LLVMBuildNot(builder, is_ma_z, ""); |
| 620 | is_ma_y = LLVMBuildAnd(builder, is_not_ma_z, |
| 621 | LLVMBuildFCmp(builder, LLVMRealUGE, selcoords->id, LLVMConstReal(f32, 2.0), ""), ""); |
| 622 | is_ma_x = LLVMBuildAnd(builder, is_not_ma_z, LLVMBuildNot(builder, is_ma_y, ""), ""); |
| 623 | |
| 624 | /* Select sc */ |
Nicolai Hähnle | 5be5c1e | 2017-09-22 19:05:52 +0200 | [diff] [blame] | 625 | tmp = LLVMBuildSelect(builder, is_ma_x, coords[2], coords[0], ""); |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 626 | sgn = LLVMBuildSelect(builder, is_ma_y, LLVMConstReal(f32, 1.0), |
Nicolai Hähnle | 5be5c1e | 2017-09-22 19:05:52 +0200 | [diff] [blame] | 627 | LLVMBuildSelect(builder, is_ma_z, sgn_ma, |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 628 | LLVMBuildFNeg(builder, sgn_ma, ""), ""), ""); |
| 629 | out_st[0] = LLVMBuildFMul(builder, tmp, sgn, ""); |
| 630 | |
| 631 | /* Select tc */ |
| 632 | tmp = LLVMBuildSelect(builder, is_ma_y, coords[2], coords[1], ""); |
Nicolai Hähnle | 5be5c1e | 2017-09-22 19:05:52 +0200 | [diff] [blame] | 633 | sgn = LLVMBuildSelect(builder, is_ma_y, sgn_ma, |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 634 | LLVMConstReal(f32, -1.0), ""); |
| 635 | out_st[1] = LLVMBuildFMul(builder, tmp, sgn, ""); |
| 636 | |
| 637 | /* Select ma */ |
| 638 | tmp = LLVMBuildSelect(builder, is_ma_z, coords[2], |
| 639 | LLVMBuildSelect(builder, is_ma_y, coords[1], coords[0], ""), ""); |
Nicolai Hähnle | a6ea4c1 | 2017-09-22 19:14:16 +0200 | [diff] [blame] | 640 | tmp = ac_build_intrinsic(ctx, "llvm.fabs.f32", |
| 641 | ctx->f32, &tmp, 1, AC_FUNC_ATTR_READNONE); |
| 642 | *out_ma = LLVMBuildFMul(builder, tmp, LLVMConstReal(f32, 2.0), ""); |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 643 | } |
| 644 | |
| 645 | void |
| 646 | ac_prepare_cube_coords(struct ac_llvm_context *ctx, |
Nicolai Hähnle | e0af3be | 2017-09-13 10:47:02 +0200 | [diff] [blame] | 647 | bool is_deriv, bool is_array, bool is_lod, |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 648 | LLVMValueRef *coords_arg, |
| 649 | LLVMValueRef *derivs_arg) |
| 650 | { |
| 651 | |
| 652 | LLVMBuilderRef builder = ctx->builder; |
| 653 | struct cube_selection_coords selcoords; |
| 654 | LLVMValueRef coords[3]; |
| 655 | LLVMValueRef invma; |
| 656 | |
Nicolai Hähnle | e0af3be | 2017-09-13 10:47:02 +0200 | [diff] [blame] | 657 | if (is_array && !is_lod) { |
Nicolai Hähnle | 94736d3 | 2017-09-13 15:33:23 +0200 | [diff] [blame] | 658 | LLVMValueRef tmp = coords_arg[3]; |
| 659 | tmp = ac_build_intrinsic(ctx, "llvm.rint.f32", ctx->f32, &tmp, 1, 0); |
| 660 | |
| 661 | /* Section 8.9 (Texture Functions) of the GLSL 4.50 spec says: |
| 662 | * |
| 663 | * "For Array forms, the array layer used will be |
| 664 | * |
| 665 | * max(0, min(d−1, floor(layer+0.5))) |
| 666 | * |
| 667 | * where d is the depth of the texture array and layer |
| 668 | * comes from the component indicated in the tables below. |
| 669 | * Workaroudn for an issue where the layer is taken from a |
| 670 | * helper invocation which happens to fall on a different |
| 671 | * layer due to extrapolation." |
| 672 | * |
| 673 | * VI and earlier attempt to implement this in hardware by |
| 674 | * clamping the value of coords[2] = (8 * layer) + face. |
| 675 | * Unfortunately, this means that the we end up with the wrong |
| 676 | * face when clamping occurs. |
| 677 | * |
| 678 | * Clamp the layer earlier to work around the issue. |
| 679 | */ |
| 680 | if (ctx->chip_class <= VI) { |
| 681 | LLVMValueRef ge0; |
| 682 | ge0 = LLVMBuildFCmp(builder, LLVMRealOGE, tmp, ctx->f32_0, ""); |
| 683 | tmp = LLVMBuildSelect(builder, ge0, tmp, ctx->f32_0, ""); |
| 684 | } |
| 685 | |
| 686 | coords_arg[3] = tmp; |
Nicolai Hähnle | e0af3be | 2017-09-13 10:47:02 +0200 | [diff] [blame] | 687 | } |
| 688 | |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 689 | build_cube_intrinsic(ctx, coords_arg, &selcoords); |
| 690 | |
Marek Olšák | 7f1446a | 2017-02-26 00:41:37 +0100 | [diff] [blame] | 691 | invma = ac_build_intrinsic(ctx, "llvm.fabs.f32", |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 692 | ctx->f32, &selcoords.ma, 1, AC_FUNC_ATTR_READNONE); |
Marek Olšák | 7f1446a | 2017-02-26 00:41:37 +0100 | [diff] [blame] | 693 | invma = ac_build_fdiv(ctx, LLVMConstReal(ctx->f32, 1.0), invma); |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 694 | |
| 695 | for (int i = 0; i < 2; ++i) |
| 696 | coords[i] = LLVMBuildFMul(builder, selcoords.stc[i], invma, ""); |
| 697 | |
| 698 | coords[2] = selcoords.id; |
| 699 | |
| 700 | if (is_deriv && derivs_arg) { |
| 701 | LLVMValueRef derivs[4]; |
| 702 | int axis; |
| 703 | |
| 704 | /* Convert cube derivatives to 2D derivatives. */ |
| 705 | for (axis = 0; axis < 2; axis++) { |
| 706 | LLVMValueRef deriv_st[2]; |
| 707 | LLVMValueRef deriv_ma; |
| 708 | |
| 709 | /* Transform the derivative alongside the texture |
| 710 | * coordinate. Mathematically, the correct formula is |
| 711 | * as follows. Assume we're projecting onto the +Z face |
| 712 | * and denote by dx/dh the derivative of the (original) |
| 713 | * X texture coordinate with respect to horizontal |
| 714 | * window coordinates. The projection onto the +Z face |
| 715 | * plane is: |
| 716 | * |
| 717 | * f(x,z) = x/z |
| 718 | * |
| 719 | * Then df/dh = df/dx * dx/dh + df/dz * dz/dh |
| 720 | * = 1/z * dx/dh - x/z * 1/z * dz/dh. |
| 721 | * |
| 722 | * This motivatives the implementation below. |
| 723 | * |
| 724 | * Whether this actually gives the expected results for |
| 725 | * apps that might feed in derivatives obtained via |
| 726 | * finite differences is anyone's guess. The OpenGL spec |
| 727 | * seems awfully quiet about how textureGrad for cube |
| 728 | * maps should be handled. |
| 729 | */ |
Nicolai Hähnle | a6ea4c1 | 2017-09-22 19:14:16 +0200 | [diff] [blame] | 730 | build_cube_select(ctx, &selcoords, &derivs_arg[axis * 3], |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 731 | deriv_st, &deriv_ma); |
| 732 | |
| 733 | deriv_ma = LLVMBuildFMul(builder, deriv_ma, invma, ""); |
| 734 | |
| 735 | for (int i = 0; i < 2; ++i) |
| 736 | derivs[axis * 2 + i] = |
| 737 | LLVMBuildFSub(builder, |
| 738 | LLVMBuildFMul(builder, deriv_st[i], invma, ""), |
| 739 | LLVMBuildFMul(builder, deriv_ma, coords[i], ""), ""); |
| 740 | } |
| 741 | |
| 742 | memcpy(derivs_arg, derivs, sizeof(derivs)); |
| 743 | } |
| 744 | |
| 745 | /* Shift the texture coordinate. This must be applied after the |
| 746 | * derivative calculation. |
| 747 | */ |
| 748 | for (int i = 0; i < 2; ++i) |
| 749 | coords[i] = LLVMBuildFAdd(builder, coords[i], LLVMConstReal(ctx->f32, 1.5), ""); |
| 750 | |
| 751 | if (is_array) { |
| 752 | /* for cube arrays coord.z = coord.w(array_index) * 8 + face */ |
| 753 | /* coords_arg.w component - array_index for cube arrays */ |
| 754 | LLVMValueRef tmp = LLVMBuildFMul(ctx->builder, coords_arg[3], LLVMConstReal(ctx->f32, 8.0), ""); |
| 755 | coords[2] = LLVMBuildFAdd(ctx->builder, tmp, coords[2], ""); |
| 756 | } |
| 757 | |
| 758 | memcpy(coords_arg, coords, sizeof(coords)); |
| 759 | } |
| 760 | |
| 761 | |
| 762 | LLVMValueRef |
| 763 | ac_build_fs_interp(struct ac_llvm_context *ctx, |
| 764 | LLVMValueRef llvm_chan, |
| 765 | LLVMValueRef attr_number, |
| 766 | LLVMValueRef params, |
| 767 | LLVMValueRef i, |
| 768 | LLVMValueRef j) |
| 769 | { |
| 770 | LLVMValueRef args[5]; |
| 771 | LLVMValueRef p1; |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 772 | |
| 773 | args[0] = i; |
| 774 | args[1] = llvm_chan; |
| 775 | args[2] = attr_number; |
| 776 | args[3] = params; |
| 777 | |
Marek Olšák | 7f1446a | 2017-02-26 00:41:37 +0100 | [diff] [blame] | 778 | p1 = ac_build_intrinsic(ctx, "llvm.amdgcn.interp.p1", |
| 779 | ctx->f32, args, 4, AC_FUNC_ATTR_READNONE); |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 780 | |
| 781 | args[0] = p1; |
| 782 | args[1] = j; |
| 783 | args[2] = llvm_chan; |
| 784 | args[3] = attr_number; |
| 785 | args[4] = params; |
| 786 | |
Marek Olšák | 7f1446a | 2017-02-26 00:41:37 +0100 | [diff] [blame] | 787 | return ac_build_intrinsic(ctx, "llvm.amdgcn.interp.p2", |
| 788 | ctx->f32, args, 5, AC_FUNC_ATTR_READNONE); |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 789 | } |
| 790 | |
| 791 | LLVMValueRef |
| 792 | ac_build_fs_interp_mov(struct ac_llvm_context *ctx, |
| 793 | LLVMValueRef parameter, |
| 794 | LLVMValueRef llvm_chan, |
| 795 | LLVMValueRef attr_number, |
| 796 | LLVMValueRef params) |
| 797 | { |
| 798 | LLVMValueRef args[4]; |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 799 | |
| 800 | args[0] = parameter; |
| 801 | args[1] = llvm_chan; |
| 802 | args[2] = attr_number; |
| 803 | args[3] = params; |
| 804 | |
Marek Olšák | 7f1446a | 2017-02-26 00:41:37 +0100 | [diff] [blame] | 805 | return ac_build_intrinsic(ctx, "llvm.amdgcn.interp.mov", |
| 806 | ctx->f32, args, 4, AC_FUNC_ATTR_READNONE); |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 807 | } |
| 808 | |
| 809 | LLVMValueRef |
| 810 | ac_build_gep0(struct ac_llvm_context *ctx, |
| 811 | LLVMValueRef base_ptr, |
| 812 | LLVMValueRef index) |
| 813 | { |
| 814 | LLVMValueRef indices[2] = { |
| 815 | LLVMConstInt(ctx->i32, 0, 0), |
| 816 | index, |
| 817 | }; |
| 818 | return LLVMBuildGEP(ctx->builder, base_ptr, |
| 819 | indices, 2, ""); |
| 820 | } |
| 821 | |
| 822 | void |
| 823 | ac_build_indexed_store(struct ac_llvm_context *ctx, |
| 824 | LLVMValueRef base_ptr, LLVMValueRef index, |
| 825 | LLVMValueRef value) |
| 826 | { |
| 827 | LLVMBuildStore(ctx->builder, value, |
| 828 | ac_build_gep0(ctx, base_ptr, index)); |
| 829 | } |
| 830 | |
| 831 | /** |
| 832 | * Build an LLVM bytecode indexed load using LLVMBuildGEP + LLVMBuildLoad. |
| 833 | * It's equivalent to doing a load from &base_ptr[index]. |
| 834 | * |
| 835 | * \param base_ptr Where the array starts. |
| 836 | * \param index The element index into the array. |
| 837 | * \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] | 838 | * dynamically uniform (i.e. load to an SGPR) |
| 839 | * \param invariant Whether the load is invariant (no other opcodes affect it) |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 840 | */ |
Marek Olšák | 854593b | 2017-10-08 20:05:44 +0200 | [diff] [blame] | 841 | static LLVMValueRef |
| 842 | ac_build_load_custom(struct ac_llvm_context *ctx, LLVMValueRef base_ptr, |
| 843 | LLVMValueRef index, bool uniform, bool invariant) |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 844 | { |
Marek Olšák | 854593b | 2017-10-08 20:05:44 +0200 | [diff] [blame] | 845 | LLVMValueRef pointer, result; |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 846 | |
| 847 | pointer = ac_build_gep0(ctx, base_ptr, index); |
| 848 | if (uniform) |
| 849 | LLVMSetMetadata(pointer, ctx->uniform_md_kind, ctx->empty_md); |
Marek Olšák | 854593b | 2017-10-08 20:05:44 +0200 | [diff] [blame] | 850 | result = LLVMBuildLoad(ctx->builder, pointer, ""); |
| 851 | if (invariant) |
| 852 | LLVMSetMetadata(result, ctx->invariant_load_md_kind, ctx->empty_md); |
| 853 | return result; |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 854 | } |
| 855 | |
Marek Olšák | 854593b | 2017-10-08 20:05:44 +0200 | [diff] [blame] | 856 | LLVMValueRef ac_build_load(struct ac_llvm_context *ctx, LLVMValueRef base_ptr, |
| 857 | LLVMValueRef index) |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 858 | { |
Marek Olšák | 854593b | 2017-10-08 20:05:44 +0200 | [diff] [blame] | 859 | return ac_build_load_custom(ctx, base_ptr, index, false, false); |
| 860 | } |
| 861 | |
| 862 | LLVMValueRef ac_build_load_invariant(struct ac_llvm_context *ctx, |
| 863 | LLVMValueRef base_ptr, LLVMValueRef index) |
| 864 | { |
| 865 | return ac_build_load_custom(ctx, base_ptr, index, false, true); |
| 866 | } |
| 867 | |
| 868 | LLVMValueRef ac_build_load_to_sgpr(struct ac_llvm_context *ctx, |
| 869 | LLVMValueRef base_ptr, LLVMValueRef index) |
| 870 | { |
| 871 | return ac_build_load_custom(ctx, base_ptr, index, true, true); |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 872 | } |
| 873 | |
| 874 | /* TBUFFER_STORE_FORMAT_{X,XY,XYZ,XYZW} <- the suffix is selected by num_channels=1..4. |
| 875 | * The type of vdata must be one of i32 (num_channels=1), v2i32 (num_channels=2), |
| 876 | * or v4i32 (num_channels=3,4). |
| 877 | */ |
| 878 | void |
Marek Olšák | 27439df | 2017-02-24 01:20:35 +0100 | [diff] [blame] | 879 | ac_build_buffer_store_dword(struct ac_llvm_context *ctx, |
| 880 | LLVMValueRef rsrc, |
| 881 | LLVMValueRef vdata, |
| 882 | unsigned num_channels, |
Marek Olšák | 8cfdbba | 2017-02-24 20:23:23 +0100 | [diff] [blame] | 883 | LLVMValueRef voffset, |
Marek Olšák | 27439df | 2017-02-24 01:20:35 +0100 | [diff] [blame] | 884 | LLVMValueRef soffset, |
| 885 | unsigned inst_offset, |
Marek Olšák | 27439df | 2017-02-24 01:20:35 +0100 | [diff] [blame] | 886 | bool glc, |
Marek Olšák | 97e21cf | 2017-02-24 02:09:47 +0100 | [diff] [blame] | 887 | bool slc, |
| 888 | bool writeonly_memory, |
Marek Olšák | bcd3e76 | 2017-09-30 15:36:18 +0200 | [diff] [blame] | 889 | bool swizzle_enable_hint) |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 890 | { |
Marek Olšák | f9eb1ef | 2018-05-16 22:23:41 -0400 | [diff] [blame] | 891 | /* Split 3 channel stores, becase LLVM doesn't support 3-channel |
| 892 | * intrinsics. */ |
| 893 | if (num_channels == 3) { |
| 894 | LLVMValueRef v[3], v01; |
| 895 | |
| 896 | for (int i = 0; i < 3; i++) { |
| 897 | v[i] = LLVMBuildExtractElement(ctx->builder, vdata, |
| 898 | LLVMConstInt(ctx->i32, i, 0), ""); |
| 899 | } |
| 900 | v01 = ac_build_gather_values(ctx, v, 2); |
| 901 | |
| 902 | ac_build_buffer_store_dword(ctx, rsrc, v01, 2, voffset, |
| 903 | soffset, inst_offset, glc, slc, |
| 904 | writeonly_memory, swizzle_enable_hint); |
| 905 | ac_build_buffer_store_dword(ctx, rsrc, v[2], 1, voffset, |
| 906 | soffset, inst_offset + 8, |
| 907 | glc, slc, |
| 908 | writeonly_memory, swizzle_enable_hint); |
| 909 | return; |
| 910 | } |
Dave Airlie | eba4cf7 | 2018-05-16 09:36:22 +1000 | [diff] [blame] | 911 | |
Marek Olšák | bcd3e76 | 2017-09-30 15:36:18 +0200 | [diff] [blame] | 912 | /* SWIZZLE_ENABLE requires that soffset isn't folded into voffset |
| 913 | * (voffset is swizzled, but soffset isn't swizzled). |
| 914 | * llvm.amdgcn.buffer.store doesn't have a separate soffset parameter. |
| 915 | */ |
Marek Olšák | f9eb1ef | 2018-05-16 22:23:41 -0400 | [diff] [blame] | 916 | if (!swizzle_enable_hint) { |
| 917 | LLVMValueRef offset = soffset; |
Marek Olšák | 97e21cf | 2017-02-24 02:09:47 +0100 | [diff] [blame] | 918 | |
Marek Olšák | f9eb1ef | 2018-05-16 22:23:41 -0400 | [diff] [blame] | 919 | static const char *types[] = {"f32", "v2f32", "v4f32"}; |
Marek Olšák | 97e21cf | 2017-02-24 02:09:47 +0100 | [diff] [blame] | 920 | |
Marek Olšák | f9eb1ef | 2018-05-16 22:23:41 -0400 | [diff] [blame] | 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, ""); |
Marek Olšák | 97e21cf | 2017-02-24 02:09:47 +0100 | [diff] [blame] | 926 | |
Marek Olšák | f9eb1ef | 2018-05-16 22:23:41 -0400 | [diff] [blame] | 927 | LLVMValueRef args[] = { |
| 928 | ac_to_float(ctx, vdata), |
| 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 | |
Marek Olšák | 97e21cf | 2017-02-24 02:09:47 +0100 | [diff] [blame] | 936 | char name[256]; |
Marek Olšák | f9eb1ef | 2018-05-16 22:23:41 -0400 | [diff] [blame] | 937 | snprintf(name, sizeof(name), "llvm.amdgcn.buffer.store.%s", |
| 938 | types[CLAMP(num_channels, 1, 3) - 1]); |
Marek Olšák | 97e21cf | 2017-02-24 02:09:47 +0100 | [diff] [blame] | 939 | |
Marek Olšák | f9eb1ef | 2018-05-16 22:23:41 -0400 | [diff] [blame] | 940 | ac_build_intrinsic(ctx, name, ctx->voidt, |
| 941 | args, ARRAY_SIZE(args), |
| 942 | writeonly_memory ? |
| 943 | AC_FUNC_ATTR_INACCESSIBLE_MEM_ONLY : |
| 944 | AC_FUNC_ATTR_WRITEONLY); |
| 945 | return; |
Marek Olšák | 97e21cf | 2017-02-24 02:09:47 +0100 | [diff] [blame] | 946 | } |
| 947 | |
Marek Olšák | f9eb1ef | 2018-05-16 22:23:41 -0400 | [diff] [blame] | 948 | static const unsigned dfmt[] = { |
| 949 | V_008F0C_BUF_DATA_FORMAT_32, |
| 950 | V_008F0C_BUF_DATA_FORMAT_32_32, |
| 951 | V_008F0C_BUF_DATA_FORMAT_32_32_32, |
| 952 | V_008F0C_BUF_DATA_FORMAT_32_32_32_32 |
| 953 | }; |
| 954 | static const char *types[] = {"i32", "v2i32", "v4i32"}; |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 955 | LLVMValueRef args[] = { |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 956 | vdata, |
Marek Olšák | f9eb1ef | 2018-05-16 22:23:41 -0400 | [diff] [blame] | 957 | LLVMBuildBitCast(ctx->builder, rsrc, ctx->v4i32, ""), |
| 958 | LLVMConstInt(ctx->i32, 0, 0), |
| 959 | voffset ? voffset : LLVMConstInt(ctx->i32, 0, 0), |
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 | f9eb1ef | 2018-05-16 22:23:41 -0400 | [diff] [blame] | 964 | LLVMConstInt(ctx->i1, glc, 0), |
| 965 | LLVMConstInt(ctx->i1, slc, 0), |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 966 | }; |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 967 | char name[256]; |
Marek Olšák | f9eb1ef | 2018-05-16 22:23:41 -0400 | [diff] [blame] | 968 | snprintf(name, sizeof(name), "llvm.amdgcn.tbuffer.store.%s", |
| 969 | types[CLAMP(num_channels, 1, 3) - 1]); |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 970 | |
Marek Olšák | 7f1446a | 2017-02-26 00:41:37 +0100 | [diff] [blame] | 971 | ac_build_intrinsic(ctx, name, ctx->voidt, |
| 972 | args, ARRAY_SIZE(args), |
Marek Olšák | f9eb1ef | 2018-05-16 22:23:41 -0400 | [diff] [blame] | 973 | writeonly_memory ? |
| 974 | AC_FUNC_ATTR_INACCESSIBLE_MEM_ONLY : |
| 975 | AC_FUNC_ATTR_WRITEONLY); |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 976 | } |
| 977 | |
Samuel Pitoiset | d7c93b5 | 2018-01-10 20:12:09 +0100 | [diff] [blame] | 978 | static LLVMValueRef |
| 979 | ac_build_buffer_load_common(struct ac_llvm_context *ctx, |
| 980 | LLVMValueRef rsrc, |
| 981 | LLVMValueRef vindex, |
| 982 | LLVMValueRef voffset, |
| 983 | unsigned num_channels, |
| 984 | bool glc, |
| 985 | bool slc, |
| 986 | bool can_speculate, |
| 987 | bool use_format) |
| 988 | { |
| 989 | LLVMValueRef args[] = { |
| 990 | LLVMBuildBitCast(ctx->builder, rsrc, ctx->v4i32, ""), |
| 991 | vindex ? vindex : LLVMConstInt(ctx->i32, 0, 0), |
| 992 | voffset, |
| 993 | LLVMConstInt(ctx->i1, glc, 0), |
| 994 | LLVMConstInt(ctx->i1, slc, 0) |
| 995 | }; |
| 996 | unsigned func = CLAMP(num_channels, 1, 3) - 1; |
| 997 | |
| 998 | LLVMTypeRef types[] = {ctx->f32, ctx->v2f32, ctx->v4f32}; |
| 999 | const char *type_names[] = {"f32", "v2f32", "v4f32"}; |
| 1000 | char name[256]; |
| 1001 | |
| 1002 | if (use_format) { |
| 1003 | snprintf(name, sizeof(name), "llvm.amdgcn.buffer.load.format.%s", |
| 1004 | type_names[func]); |
| 1005 | } else { |
| 1006 | snprintf(name, sizeof(name), "llvm.amdgcn.buffer.load.%s", |
| 1007 | type_names[func]); |
| 1008 | } |
| 1009 | |
| 1010 | return ac_build_intrinsic(ctx, name, types[func], args, |
| 1011 | ARRAY_SIZE(args), |
| 1012 | ac_get_load_intr_attribs(can_speculate)); |
| 1013 | } |
| 1014 | |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 1015 | LLVMValueRef |
| 1016 | ac_build_buffer_load(struct ac_llvm_context *ctx, |
| 1017 | LLVMValueRef rsrc, |
| 1018 | int num_channels, |
| 1019 | LLVMValueRef vindex, |
| 1020 | LLVMValueRef voffset, |
| 1021 | LLVMValueRef soffset, |
| 1022 | unsigned inst_offset, |
| 1023 | unsigned glc, |
Marek Olšák | e729dc7 | 2017-02-24 17:16:28 +0100 | [diff] [blame] | 1024 | unsigned slc, |
Marek Olšák | e019ea8 | 2017-05-19 15:02:34 +0200 | [diff] [blame] | 1025 | bool can_speculate, |
| 1026 | bool allow_smem) |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 1027 | { |
Marek Olšák | e019ea8 | 2017-05-19 15:02:34 +0200 | [diff] [blame] | 1028 | LLVMValueRef offset = LLVMConstInt(ctx->i32, inst_offset, 0); |
| 1029 | if (voffset) |
| 1030 | offset = LLVMBuildAdd(ctx->builder, offset, voffset, ""); |
| 1031 | if (soffset) |
| 1032 | offset = LLVMBuildAdd(ctx->builder, offset, soffset, ""); |
| 1033 | |
| 1034 | /* TODO: VI and later generations can use SMEM with GLC=1.*/ |
| 1035 | if (allow_smem && !glc && !slc) { |
| 1036 | assert(vindex == NULL); |
| 1037 | |
Dave Airlie | 16dd0eb | 2018-01-30 13:58:05 +1000 | [diff] [blame] | 1038 | LLVMValueRef result[8]; |
Marek Olšák | e019ea8 | 2017-05-19 15:02:34 +0200 | [diff] [blame] | 1039 | |
| 1040 | for (int i = 0; i < num_channels; i++) { |
| 1041 | if (i) { |
| 1042 | offset = LLVMBuildAdd(ctx->builder, offset, |
| 1043 | LLVMConstInt(ctx->i32, 4, 0), ""); |
| 1044 | } |
| 1045 | LLVMValueRef args[2] = {rsrc, offset}; |
| 1046 | result[i] = ac_build_intrinsic(ctx, "llvm.SI.load.const.v4i32", |
| 1047 | ctx->f32, args, 2, |
| 1048 | AC_FUNC_ATTR_READNONE | |
| 1049 | AC_FUNC_ATTR_LEGACY); |
| 1050 | } |
| 1051 | if (num_channels == 1) |
| 1052 | return result[0]; |
| 1053 | |
| 1054 | if (num_channels == 3) |
| 1055 | result[num_channels++] = LLVMGetUndef(ctx->f32); |
| 1056 | return ac_build_gather_values(ctx, result, num_channels); |
| 1057 | } |
| 1058 | |
Samuel Pitoiset | d7c93b5 | 2018-01-10 20:12:09 +0100 | [diff] [blame] | 1059 | return ac_build_buffer_load_common(ctx, rsrc, vindex, offset, |
| 1060 | num_channels, glc, slc, |
| 1061 | can_speculate, false); |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 1062 | } |
| 1063 | |
Marek Olšák | 94811dc | 2017-02-25 23:40:52 +0100 | [diff] [blame] | 1064 | LLVMValueRef ac_build_buffer_load_format(struct ac_llvm_context *ctx, |
| 1065 | LLVMValueRef rsrc, |
| 1066 | LLVMValueRef vindex, |
| 1067 | LLVMValueRef voffset, |
Samuel Pitoiset | 51e14bc | 2018-01-10 20:12:10 +0100 | [diff] [blame] | 1068 | unsigned num_channels, |
Marek Olšák | bac9fa9 | 2018-01-30 19:24:07 +0100 | [diff] [blame] | 1069 | bool glc, |
Marek Olšák | e1942c9 | 2017-05-25 16:13:54 +0200 | [diff] [blame] | 1070 | bool can_speculate) |
Marek Olšák | 94811dc | 2017-02-25 23:40:52 +0100 | [diff] [blame] | 1071 | { |
Samuel Pitoiset | 51e14bc | 2018-01-10 20:12:10 +0100 | [diff] [blame] | 1072 | return ac_build_buffer_load_common(ctx, rsrc, vindex, voffset, |
Marek Olšák | bac9fa9 | 2018-01-30 19:24:07 +0100 | [diff] [blame] | 1073 | num_channels, glc, false, |
Samuel Pitoiset | 51e14bc | 2018-01-10 20:12:10 +0100 | [diff] [blame] | 1074 | can_speculate, true); |
Marek Olšák | 94811dc | 2017-02-25 23:40:52 +0100 | [diff] [blame] | 1075 | } |
| 1076 | |
Bas Nieuwenhuizen | 4503ff7 | 2018-03-28 23:54:40 +0200 | [diff] [blame] | 1077 | LLVMValueRef ac_build_buffer_load_format_gfx9_safe(struct ac_llvm_context *ctx, |
| 1078 | LLVMValueRef rsrc, |
| 1079 | LLVMValueRef vindex, |
| 1080 | LLVMValueRef voffset, |
| 1081 | unsigned num_channels, |
| 1082 | bool glc, |
| 1083 | bool can_speculate) |
| 1084 | { |
| 1085 | LLVMValueRef elem_count = LLVMBuildExtractElement(ctx->builder, rsrc, LLVMConstInt(ctx->i32, 2, 0), ""); |
| 1086 | LLVMValueRef stride = LLVMBuildExtractElement(ctx->builder, rsrc, LLVMConstInt(ctx->i32, 1, 0), ""); |
| 1087 | stride = LLVMBuildLShr(ctx->builder, stride, LLVMConstInt(ctx->i32, 16, 0), ""); |
| 1088 | |
| 1089 | LLVMValueRef new_elem_count = LLVMBuildSelect(ctx->builder, |
| 1090 | LLVMBuildICmp(ctx->builder, LLVMIntUGT, elem_count, stride, ""), |
| 1091 | elem_count, stride, ""); |
| 1092 | |
| 1093 | LLVMValueRef new_rsrc = LLVMBuildInsertElement(ctx->builder, rsrc, new_elem_count, |
| 1094 | LLVMConstInt(ctx->i32, 2, 0), ""); |
| 1095 | |
| 1096 | return ac_build_buffer_load_common(ctx, new_rsrc, vindex, voffset, |
| 1097 | num_channels, glc, false, |
| 1098 | can_speculate, true); |
| 1099 | } |
| 1100 | |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 1101 | /** |
| 1102 | * Set range metadata on an instruction. This can only be used on load and |
| 1103 | * call instructions. If you know an instruction can only produce the values |
| 1104 | * 0, 1, 2, you would do set_range_metadata(value, 0, 3); |
| 1105 | * \p lo is the minimum value inclusive. |
| 1106 | * \p hi is the maximum value exclusive. |
| 1107 | */ |
| 1108 | static void set_range_metadata(struct ac_llvm_context *ctx, |
| 1109 | LLVMValueRef value, unsigned lo, unsigned hi) |
| 1110 | { |
| 1111 | LLVMValueRef range_md, md_args[2]; |
| 1112 | LLVMTypeRef type = LLVMTypeOf(value); |
| 1113 | LLVMContextRef context = LLVMGetTypeContext(type); |
| 1114 | |
| 1115 | md_args[0] = LLVMConstInt(type, lo, false); |
| 1116 | md_args[1] = LLVMConstInt(type, hi, false); |
| 1117 | range_md = LLVMMDNodeInContext(context, md_args, 2); |
| 1118 | LLVMSetMetadata(value, ctx->range_md_kind, range_md); |
| 1119 | } |
| 1120 | |
| 1121 | LLVMValueRef |
| 1122 | ac_get_thread_id(struct ac_llvm_context *ctx) |
| 1123 | { |
| 1124 | LLVMValueRef tid; |
| 1125 | |
Marek Olšák | 7e1faa7 | 2017-03-05 00:15:31 +0100 | [diff] [blame] | 1126 | LLVMValueRef tid_args[2]; |
| 1127 | tid_args[0] = LLVMConstInt(ctx->i32, 0xffffffff, false); |
| 1128 | tid_args[1] = LLVMConstInt(ctx->i32, 0, false); |
| 1129 | tid_args[1] = ac_build_intrinsic(ctx, |
| 1130 | "llvm.amdgcn.mbcnt.lo", ctx->i32, |
| 1131 | tid_args, 2, AC_FUNC_ATTR_READNONE); |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 1132 | |
Marek Olšák | 7e1faa7 | 2017-03-05 00:15:31 +0100 | [diff] [blame] | 1133 | tid = ac_build_intrinsic(ctx, "llvm.amdgcn.mbcnt.hi", |
| 1134 | ctx->i32, tid_args, |
| 1135 | 2, AC_FUNC_ATTR_READNONE); |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 1136 | set_range_metadata(ctx, tid, 0, 64); |
| 1137 | return tid; |
| 1138 | } |
| 1139 | |
| 1140 | /* |
| 1141 | * SI implements derivatives using the local data store (LDS) |
| 1142 | * All writes to the LDS happen in all executing threads at |
| 1143 | * the same time. TID is the Thread ID for the current |
| 1144 | * thread and is a value between 0 and 63, representing |
| 1145 | * the thread's position in the wavefront. |
| 1146 | * |
| 1147 | * For the pixel shader threads are grouped into quads of four pixels. |
| 1148 | * The TIDs of the pixels of a quad are: |
| 1149 | * |
| 1150 | * +------+------+ |
| 1151 | * |4n + 0|4n + 1| |
| 1152 | * +------+------+ |
| 1153 | * |4n + 2|4n + 3| |
| 1154 | * +------+------+ |
| 1155 | * |
| 1156 | * So, masking the TID with 0xfffffffc yields the TID of the top left pixel |
| 1157 | * of the quad, masking with 0xfffffffd yields the TID of the top pixel of |
| 1158 | * the current pixel's column, and masking with 0xfffffffe yields the TID |
| 1159 | * of the left pixel of the current pixel's row. |
| 1160 | * |
| 1161 | * Adding 1 yields the TID of the pixel to the right of the left pixel, and |
| 1162 | * adding 2 yields the TID of the pixel below the top pixel. |
| 1163 | */ |
| 1164 | LLVMValueRef |
Marek Olšák | 7f1446a | 2017-02-26 00:41:37 +0100 | [diff] [blame] | 1165 | ac_build_ddxy(struct ac_llvm_context *ctx, |
Marek Olšák | 7f1446a | 2017-02-26 00:41:37 +0100 | [diff] [blame] | 1166 | uint32_t mask, |
| 1167 | int idx, |
Marek Olšák | 7f1446a | 2017-02-26 00:41:37 +0100 | [diff] [blame] | 1168 | LLVMValueRef val) |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 1169 | { |
Dave Airlie | cb6f16d | 2017-08-01 05:10:49 +0100 | [diff] [blame] | 1170 | LLVMValueRef tl, trbl, args[2]; |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 1171 | LLVMValueRef result; |
| 1172 | |
Bas Nieuwenhuizen | 699e1f5 | 2018-05-23 11:34:15 +0200 | [diff] [blame] | 1173 | if (HAVE_LLVM >= 0x0700) { |
| 1174 | unsigned tl_lanes[4], trbl_lanes[4]; |
| 1175 | |
| 1176 | for (unsigned i = 0; i < 4; ++i) { |
| 1177 | tl_lanes[i] = i & mask; |
| 1178 | trbl_lanes[i] = (i & mask) + idx; |
| 1179 | } |
| 1180 | |
| 1181 | tl = ac_build_quad_swizzle(ctx, val, |
| 1182 | tl_lanes[0], tl_lanes[1], |
| 1183 | tl_lanes[2], tl_lanes[3]); |
| 1184 | trbl = ac_build_quad_swizzle(ctx, val, |
| 1185 | trbl_lanes[0], trbl_lanes[1], |
| 1186 | trbl_lanes[2], trbl_lanes[3]); |
| 1187 | } else if (ctx->chip_class >= VI) { |
Dave Airlie | cb6f16d | 2017-08-01 05:10:49 +0100 | [diff] [blame] | 1188 | LLVMValueRef thread_id, tl_tid, trbl_tid; |
| 1189 | thread_id = ac_get_thread_id(ctx); |
| 1190 | |
| 1191 | tl_tid = LLVMBuildAnd(ctx->builder, thread_id, |
| 1192 | LLVMConstInt(ctx->i32, mask, false), ""); |
| 1193 | |
| 1194 | trbl_tid = LLVMBuildAdd(ctx->builder, tl_tid, |
| 1195 | LLVMConstInt(ctx->i32, idx, false), ""); |
| 1196 | |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 1197 | args[0] = LLVMBuildMul(ctx->builder, tl_tid, |
| 1198 | LLVMConstInt(ctx->i32, 4, false), ""); |
| 1199 | args[1] = val; |
Marek Olšák | 7f1446a | 2017-02-26 00:41:37 +0100 | [diff] [blame] | 1200 | tl = ac_build_intrinsic(ctx, |
| 1201 | "llvm.amdgcn.ds.bpermute", ctx->i32, |
Marek Olšák | d5d74fe | 2017-02-26 19:00:44 +0100 | [diff] [blame] | 1202 | args, 2, |
| 1203 | AC_FUNC_ATTR_READNONE | |
| 1204 | AC_FUNC_ATTR_CONVERGENT); |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 1205 | |
| 1206 | args[0] = LLVMBuildMul(ctx->builder, trbl_tid, |
| 1207 | LLVMConstInt(ctx->i32, 4, false), ""); |
Marek Olšák | 7f1446a | 2017-02-26 00:41:37 +0100 | [diff] [blame] | 1208 | trbl = ac_build_intrinsic(ctx, |
| 1209 | "llvm.amdgcn.ds.bpermute", ctx->i32, |
Marek Olšák | d5d74fe | 2017-02-26 19:00:44 +0100 | [diff] [blame] | 1210 | args, 2, |
| 1211 | AC_FUNC_ATTR_READNONE | |
| 1212 | AC_FUNC_ATTR_CONVERGENT); |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 1213 | } else { |
Marek Olšák | 94d800b | 2017-10-04 16:59:40 +0200 | [diff] [blame] | 1214 | uint32_t masks[2] = {}; |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 1215 | |
Dave Airlie | cb6f16d | 2017-08-01 05:10:49 +0100 | [diff] [blame] | 1216 | switch (mask) { |
| 1217 | case AC_TID_MASK_TOP_LEFT: |
| 1218 | masks[0] = 0x8000; |
| 1219 | if (idx == 1) |
| 1220 | masks[1] = 0x8055; |
| 1221 | else |
| 1222 | masks[1] = 0x80aa; |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 1223 | |
Dave Airlie | cb6f16d | 2017-08-01 05:10:49 +0100 | [diff] [blame] | 1224 | break; |
| 1225 | case AC_TID_MASK_TOP: |
| 1226 | masks[0] = 0x8044; |
| 1227 | masks[1] = 0x80ee; |
| 1228 | break; |
| 1229 | case AC_TID_MASK_LEFT: |
| 1230 | masks[0] = 0x80a0; |
| 1231 | masks[1] = 0x80f5; |
| 1232 | break; |
Marek Olšák | 94d800b | 2017-10-04 16:59:40 +0200 | [diff] [blame] | 1233 | default: |
| 1234 | assert(0); |
Dave Airlie | cb6f16d | 2017-08-01 05:10:49 +0100 | [diff] [blame] | 1235 | } |
| 1236 | |
| 1237 | args[0] = val; |
| 1238 | args[1] = LLVMConstInt(ctx->i32, masks[0], false); |
| 1239 | |
| 1240 | tl = ac_build_intrinsic(ctx, |
| 1241 | "llvm.amdgcn.ds.swizzle", ctx->i32, |
| 1242 | args, 2, |
| 1243 | AC_FUNC_ATTR_READNONE | |
| 1244 | AC_FUNC_ATTR_CONVERGENT); |
| 1245 | |
| 1246 | args[1] = LLVMConstInt(ctx->i32, masks[1], false); |
| 1247 | trbl = ac_build_intrinsic(ctx, |
| 1248 | "llvm.amdgcn.ds.swizzle", ctx->i32, |
| 1249 | args, 2, |
| 1250 | AC_FUNC_ATTR_READNONE | |
| 1251 | AC_FUNC_ATTR_CONVERGENT); |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 1252 | } |
| 1253 | |
| 1254 | tl = LLVMBuildBitCast(ctx->builder, tl, ctx->f32, ""); |
| 1255 | trbl = LLVMBuildBitCast(ctx->builder, trbl, ctx->f32, ""); |
| 1256 | result = LLVMBuildFSub(ctx->builder, trbl, tl, ""); |
Nicolai Hähnle | c0acb59 | 2018-05-01 11:06:18 +0200 | [diff] [blame] | 1257 | |
| 1258 | if (HAVE_LLVM >= 0x0700) { |
| 1259 | result = ac_build_intrinsic(ctx, |
| 1260 | "llvm.amdgcn.wqm.f32", ctx->f32, |
| 1261 | &result, 1, 0); |
| 1262 | } |
| 1263 | |
Dave Airlie | 13a28ff | 2017-02-03 10:05:00 +1000 | [diff] [blame] | 1264 | return result; |
| 1265 | } |
Dave Airlie | f32955b | 2017-02-13 22:08:30 +0000 | [diff] [blame] | 1266 | |
| 1267 | void |
Marek Olšák | 7f1446a | 2017-02-26 00:41:37 +0100 | [diff] [blame] | 1268 | ac_build_sendmsg(struct ac_llvm_context *ctx, |
| 1269 | uint32_t msg, |
| 1270 | LLVMValueRef wave_id) |
Dave Airlie | f32955b | 2017-02-13 22:08:30 +0000 | [diff] [blame] | 1271 | { |
| 1272 | LLVMValueRef args[2]; |
Dave Airlie | f32955b | 2017-02-13 22:08:30 +0000 | [diff] [blame] | 1273 | args[0] = LLVMConstInt(ctx->i32, msg, false); |
| 1274 | args[1] = wave_id; |
Marek Olšák | 3bf1e03 | 2018-02-02 19:26:49 +0100 | [diff] [blame] | 1275 | 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] | 1276 | } |
Dave Airlie | cae1ff1 | 2017-02-16 03:42:56 +0000 | [diff] [blame] | 1277 | |
| 1278 | LLVMValueRef |
Marek Olšák | 7f1446a | 2017-02-26 00:41:37 +0100 | [diff] [blame] | 1279 | ac_build_imsb(struct ac_llvm_context *ctx, |
| 1280 | LLVMValueRef arg, |
| 1281 | LLVMTypeRef dst_type) |
Dave Airlie | cae1ff1 | 2017-02-16 03:42:56 +0000 | [diff] [blame] | 1282 | { |
Marek Olšák | 3bf1e03 | 2018-02-02 19:26:49 +0100 | [diff] [blame] | 1283 | LLVMValueRef msb = ac_build_intrinsic(ctx, "llvm.amdgcn.sffbh.i32", |
Marek Olšák | 7f1446a | 2017-02-26 00:41:37 +0100 | [diff] [blame] | 1284 | dst_type, &arg, 1, |
| 1285 | AC_FUNC_ATTR_READNONE); |
Dave Airlie | cae1ff1 | 2017-02-16 03:42:56 +0000 | [diff] [blame] | 1286 | |
| 1287 | /* The HW returns the last bit index from MSB, but NIR/TGSI wants |
| 1288 | * the index from LSB. Invert it by doing "31 - msb". */ |
| 1289 | msb = LLVMBuildSub(ctx->builder, LLVMConstInt(ctx->i32, 31, false), |
| 1290 | msb, ""); |
| 1291 | |
| 1292 | LLVMValueRef all_ones = LLVMConstInt(ctx->i32, -1, true); |
| 1293 | LLVMValueRef cond = LLVMBuildOr(ctx->builder, |
| 1294 | LLVMBuildICmp(ctx->builder, LLVMIntEQ, |
| 1295 | arg, LLVMConstInt(ctx->i32, 0, 0), ""), |
| 1296 | LLVMBuildICmp(ctx->builder, LLVMIntEQ, |
| 1297 | arg, all_ones, ""), ""); |
| 1298 | |
| 1299 | return LLVMBuildSelect(ctx->builder, cond, all_ones, msb, ""); |
| 1300 | } |
Dave Airlie | 0ec66b9 | 2017-02-16 03:53:27 +0000 | [diff] [blame] | 1301 | |
| 1302 | LLVMValueRef |
Marek Olšák | 7f1446a | 2017-02-26 00:41:37 +0100 | [diff] [blame] | 1303 | ac_build_umsb(struct ac_llvm_context *ctx, |
| 1304 | LLVMValueRef arg, |
| 1305 | LLVMTypeRef dst_type) |
Dave Airlie | 0ec66b9 | 2017-02-16 03:53:27 +0000 | [diff] [blame] | 1306 | { |
Daniel Schürmann | d19f20e | 2018-02-28 20:26:03 +0100 | [diff] [blame] | 1307 | const char *intrin_name; |
| 1308 | LLVMTypeRef type; |
| 1309 | LLVMValueRef highest_bit; |
| 1310 | LLVMValueRef zero; |
| 1311 | |
| 1312 | if (ac_get_elem_bits(ctx, LLVMTypeOf(arg)) == 64) { |
| 1313 | intrin_name = "llvm.ctlz.i64"; |
| 1314 | type = ctx->i64; |
| 1315 | highest_bit = LLVMConstInt(ctx->i64, 63, false); |
| 1316 | zero = ctx->i64_0; |
| 1317 | } else { |
| 1318 | intrin_name = "llvm.ctlz.i32"; |
| 1319 | type = ctx->i32; |
| 1320 | highest_bit = LLVMConstInt(ctx->i32, 31, false); |
| 1321 | zero = ctx->i32_0; |
| 1322 | } |
| 1323 | |
| 1324 | LLVMValueRef params[2] = { |
Dave Airlie | 0ec66b9 | 2017-02-16 03:53:27 +0000 | [diff] [blame] | 1325 | arg, |
Dave Airlie | a76b6c2 | 2017-10-26 15:20:15 +1000 | [diff] [blame] | 1326 | ctx->i1true, |
Dave Airlie | 0ec66b9 | 2017-02-16 03:53:27 +0000 | [diff] [blame] | 1327 | }; |
Daniel Schürmann | d19f20e | 2018-02-28 20:26:03 +0100 | [diff] [blame] | 1328 | |
| 1329 | LLVMValueRef msb = ac_build_intrinsic(ctx, intrin_name, type, |
| 1330 | params, 2, |
Marek Olšák | 7f1446a | 2017-02-26 00:41:37 +0100 | [diff] [blame] | 1331 | AC_FUNC_ATTR_READNONE); |
Dave Airlie | 0ec66b9 | 2017-02-16 03:53:27 +0000 | [diff] [blame] | 1332 | |
| 1333 | /* The HW returns the last bit index from MSB, but TGSI/NIR wants |
| 1334 | * the index from LSB. Invert it by doing "31 - msb". */ |
Daniel Schürmann | d19f20e | 2018-02-28 20:26:03 +0100 | [diff] [blame] | 1335 | msb = LLVMBuildSub(ctx->builder, highest_bit, msb, ""); |
| 1336 | msb = LLVMBuildTruncOrBitCast(ctx->builder, msb, ctx->i32, ""); |
Dave Airlie | 0ec66b9 | 2017-02-16 03:53:27 +0000 | [diff] [blame] | 1337 | |
| 1338 | /* check for zero */ |
| 1339 | return LLVMBuildSelect(ctx->builder, |
Daniel Schürmann | d19f20e | 2018-02-28 20:26:03 +0100 | [diff] [blame] | 1340 | LLVMBuildICmp(ctx->builder, LLVMIntEQ, arg, zero, ""), |
Dave Airlie | 0ec66b9 | 2017-02-16 03:53:27 +0000 | [diff] [blame] | 1341 | LLVMConstInt(ctx->i32, -1, true), msb, ""); |
| 1342 | } |
Marek Olšák | 660b55e | 2017-02-16 22:41:16 +0100 | [diff] [blame] | 1343 | |
Marek Olšák | a140aeb | 2018-01-02 03:59:43 +0100 | [diff] [blame] | 1344 | LLVMValueRef ac_build_fmin(struct ac_llvm_context *ctx, LLVMValueRef a, |
| 1345 | LLVMValueRef b) |
| 1346 | { |
| 1347 | LLVMValueRef args[2] = {a, b}; |
| 1348 | return ac_build_intrinsic(ctx, "llvm.minnum.f32", ctx->f32, args, 2, |
| 1349 | AC_FUNC_ATTR_READNONE); |
| 1350 | } |
| 1351 | |
| 1352 | LLVMValueRef ac_build_fmax(struct ac_llvm_context *ctx, LLVMValueRef a, |
| 1353 | LLVMValueRef b) |
| 1354 | { |
| 1355 | LLVMValueRef args[2] = {a, b}; |
| 1356 | return ac_build_intrinsic(ctx, "llvm.maxnum.f32", ctx->f32, args, 2, |
| 1357 | AC_FUNC_ATTR_READNONE); |
| 1358 | } |
| 1359 | |
Marek Olšák | 847d0a3 | 2018-01-02 04:34:53 +0100 | [diff] [blame] | 1360 | LLVMValueRef ac_build_imin(struct ac_llvm_context *ctx, LLVMValueRef a, |
| 1361 | LLVMValueRef b) |
| 1362 | { |
| 1363 | LLVMValueRef cmp = LLVMBuildICmp(ctx->builder, LLVMIntSLE, a, b, ""); |
| 1364 | return LLVMBuildSelect(ctx->builder, cmp, a, b, ""); |
| 1365 | } |
| 1366 | |
| 1367 | LLVMValueRef ac_build_imax(struct ac_llvm_context *ctx, LLVMValueRef a, |
| 1368 | LLVMValueRef b) |
| 1369 | { |
| 1370 | LLVMValueRef cmp = LLVMBuildICmp(ctx->builder, LLVMIntSGT, a, b, ""); |
| 1371 | return LLVMBuildSelect(ctx->builder, cmp, a, b, ""); |
| 1372 | } |
| 1373 | |
Nicolai Hähnle | a69afb6 | 2017-06-25 17:56:37 +0200 | [diff] [blame] | 1374 | LLVMValueRef ac_build_umin(struct ac_llvm_context *ctx, LLVMValueRef a, |
| 1375 | LLVMValueRef b) |
| 1376 | { |
| 1377 | LLVMValueRef cmp = LLVMBuildICmp(ctx->builder, LLVMIntULE, a, b, ""); |
| 1378 | return LLVMBuildSelect(ctx->builder, cmp, a, b, ""); |
| 1379 | } |
| 1380 | |
Marek Olšák | 7f1446a | 2017-02-26 00:41:37 +0100 | [diff] [blame] | 1381 | LLVMValueRef ac_build_clamp(struct ac_llvm_context *ctx, LLVMValueRef value) |
Marek Olšák | 660b55e | 2017-02-16 22:41:16 +0100 | [diff] [blame] | 1382 | { |
Marek Olšák | f9eb1ef | 2018-05-16 22:23:41 -0400 | [diff] [blame] | 1383 | return ac_build_fmin(ctx, ac_build_fmax(ctx, value, ctx->f32_0), |
| 1384 | ctx->f32_1); |
Marek Olšák | 660b55e | 2017-02-16 22:41:16 +0100 | [diff] [blame] | 1385 | } |
Marek Olšák | 369f4a8 | 2017-02-23 02:06:40 +0100 | [diff] [blame] | 1386 | |
Marek Olšák | 7f1446a | 2017-02-26 00:41:37 +0100 | [diff] [blame] | 1387 | 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] | 1388 | { |
| 1389 | LLVMValueRef args[9]; |
| 1390 | |
Marek Olšák | f9eb1ef | 2018-05-16 22:23:41 -0400 | [diff] [blame] | 1391 | args[0] = LLVMConstInt(ctx->i32, a->target, 0); |
| 1392 | args[1] = LLVMConstInt(ctx->i32, a->enabled_channels, 0); |
Marek Olšák | 2b3ebe3 | 2017-02-23 02:15:54 +0100 | [diff] [blame] | 1393 | |
Marek Olšák | f9eb1ef | 2018-05-16 22:23:41 -0400 | [diff] [blame] | 1394 | if (a->compr) { |
| 1395 | LLVMTypeRef i16 = LLVMInt16TypeInContext(ctx->context); |
| 1396 | LLVMTypeRef v2i16 = LLVMVectorType(i16, 2); |
Marek Olšák | 2b3ebe3 | 2017-02-23 02:15:54 +0100 | [diff] [blame] | 1397 | |
Marek Olšák | f9eb1ef | 2018-05-16 22:23:41 -0400 | [diff] [blame] | 1398 | args[2] = LLVMBuildBitCast(ctx->builder, a->out[0], |
| 1399 | v2i16, ""); |
| 1400 | args[3] = LLVMBuildBitCast(ctx->builder, a->out[1], |
| 1401 | v2i16, ""); |
| 1402 | args[4] = LLVMConstInt(ctx->i1, a->done, 0); |
| 1403 | args[5] = LLVMConstInt(ctx->i1, a->valid_mask, 0); |
Marek Olšák | 2b3ebe3 | 2017-02-23 02:15:54 +0100 | [diff] [blame] | 1404 | |
Marek Olšák | f9eb1ef | 2018-05-16 22:23:41 -0400 | [diff] [blame] | 1405 | ac_build_intrinsic(ctx, "llvm.amdgcn.exp.compr.v2i16", |
| 1406 | ctx->voidt, args, 6, 0); |
| 1407 | } else { |
| 1408 | args[2] = a->out[0]; |
| 1409 | args[3] = a->out[1]; |
| 1410 | args[4] = a->out[2]; |
| 1411 | args[5] = a->out[3]; |
| 1412 | args[6] = LLVMConstInt(ctx->i1, a->done, 0); |
| 1413 | args[7] = LLVMConstInt(ctx->i1, a->valid_mask, 0); |
Marek Olšák | 2b3ebe3 | 2017-02-23 02:15:54 +0100 | [diff] [blame] | 1414 | |
Marek Olšák | f9eb1ef | 2018-05-16 22:23:41 -0400 | [diff] [blame] | 1415 | ac_build_intrinsic(ctx, "llvm.amdgcn.exp.f32", |
| 1416 | ctx->voidt, args, 8, 0); |
Marek Olšák | 2b3ebe3 | 2017-02-23 02:15:54 +0100 | [diff] [blame] | 1417 | } |
Marek Olšák | 369f4a8 | 2017-02-23 02:06:40 +0100 | [diff] [blame] | 1418 | } |
Marek Olšák | ad18d7f | 2017-02-23 23:00:19 +0100 | [diff] [blame] | 1419 | |
Samuel Pitoiset | bd9f7b7 | 2018-02-07 19:09:12 +0100 | [diff] [blame] | 1420 | void ac_build_export_null(struct ac_llvm_context *ctx) |
| 1421 | { |
| 1422 | struct ac_export_args args; |
| 1423 | |
| 1424 | args.enabled_channels = 0x0; /* enabled channels */ |
| 1425 | args.valid_mask = 1; /* whether the EXEC mask is valid */ |
| 1426 | args.done = 1; /* DONE bit */ |
| 1427 | args.target = V_008DFC_SQ_EXP_NULL; |
| 1428 | args.compr = 0; /* COMPR flag (0 = 32-bit export) */ |
| 1429 | args.out[0] = LLVMGetUndef(ctx->f32); /* R */ |
| 1430 | args.out[1] = LLVMGetUndef(ctx->f32); /* G */ |
| 1431 | args.out[2] = LLVMGetUndef(ctx->f32); /* B */ |
| 1432 | args.out[3] = LLVMGetUndef(ctx->f32); /* A */ |
| 1433 | |
| 1434 | ac_build_export(ctx, &args); |
| 1435 | } |
| 1436 | |
Nicolai Hähnle | 625dcbb | 2018-03-23 11:20:24 +0100 | [diff] [blame] | 1437 | static unsigned ac_num_coords(enum ac_image_dim dim) |
| 1438 | { |
| 1439 | switch (dim) { |
| 1440 | case ac_image_1d: |
| 1441 | return 1; |
| 1442 | case ac_image_2d: |
| 1443 | case ac_image_1darray: |
| 1444 | return 2; |
| 1445 | case ac_image_3d: |
| 1446 | case ac_image_cube: |
| 1447 | case ac_image_2darray: |
| 1448 | case ac_image_2dmsaa: |
| 1449 | return 3; |
| 1450 | case ac_image_2darraymsaa: |
| 1451 | return 4; |
| 1452 | default: |
| 1453 | unreachable("ac_num_coords: bad dim"); |
| 1454 | } |
| 1455 | } |
| 1456 | |
| 1457 | static unsigned ac_num_derivs(enum ac_image_dim dim) |
| 1458 | { |
| 1459 | switch (dim) { |
| 1460 | case ac_image_1d: |
| 1461 | case ac_image_1darray: |
| 1462 | return 2; |
| 1463 | case ac_image_2d: |
| 1464 | case ac_image_2darray: |
| 1465 | case ac_image_cube: |
| 1466 | return 4; |
| 1467 | case ac_image_3d: |
| 1468 | return 6; |
| 1469 | case ac_image_2dmsaa: |
| 1470 | case ac_image_2darraymsaa: |
| 1471 | default: |
| 1472 | unreachable("derivatives not supported"); |
| 1473 | } |
| 1474 | } |
| 1475 | |
Nicolai Hähnle | a9a7993 | 2018-02-16 18:44:25 +0100 | [diff] [blame] | 1476 | static const char *get_atomic_name(enum ac_atomic_op op) |
| 1477 | { |
| 1478 | switch (op) { |
| 1479 | case ac_atomic_swap: return "swap"; |
| 1480 | case ac_atomic_add: return "add"; |
| 1481 | case ac_atomic_sub: return "sub"; |
| 1482 | case ac_atomic_smin: return "smin"; |
| 1483 | case ac_atomic_umin: return "umin"; |
| 1484 | case ac_atomic_smax: return "smax"; |
| 1485 | case ac_atomic_umax: return "umax"; |
| 1486 | case ac_atomic_and: return "and"; |
| 1487 | case ac_atomic_or: return "or"; |
| 1488 | case ac_atomic_xor: return "xor"; |
| 1489 | } |
| 1490 | unreachable("bad atomic op"); |
| 1491 | } |
| 1492 | |
| 1493 | /* LLVM 6 and older */ |
| 1494 | static LLVMValueRef ac_build_image_opcode_llvm6(struct ac_llvm_context *ctx, |
| 1495 | struct ac_image_args *a) |
Marek Olšák | ad18d7f | 2017-02-23 23:00:19 +0100 | [diff] [blame] | 1496 | { |
Nicolai Hähnle | 625dcbb | 2018-03-23 11:20:24 +0100 | [diff] [blame] | 1497 | LLVMValueRef args[16]; |
Nicolai Hähnle | 7406343 | 2018-04-20 09:29:57 +0200 | [diff] [blame] | 1498 | LLVMTypeRef retty = ctx->v4f32; |
Eric Anholt | 34c04c7 | 2017-10-17 13:45:09 -0700 | [diff] [blame] | 1499 | const char *name = NULL; |
Nicolai Hähnle | 7406343 | 2018-04-20 09:29:57 +0200 | [diff] [blame] | 1500 | const char *atomic_subop = ""; |
| 1501 | char intr_name[128], coords_type[64]; |
Marek Olšák | ad18d7f | 2017-02-23 23:00:19 +0100 | [diff] [blame] | 1502 | |
Marek Olšák | 3bf1e03 | 2018-02-02 19:26:49 +0100 | [diff] [blame] | 1503 | bool sample = a->opcode == ac_image_sample || |
| 1504 | a->opcode == ac_image_gather4 || |
| 1505 | a->opcode == ac_image_get_lod; |
Nicolai Hähnle | 7406343 | 2018-04-20 09:29:57 +0200 | [diff] [blame] | 1506 | bool atomic = a->opcode == ac_image_atomic || |
| 1507 | a->opcode == ac_image_atomic_cmpswap; |
Nicolai Hähnle | f931583 | 2018-02-16 14:21:56 +0100 | [diff] [blame] | 1508 | bool da = a->dim == ac_image_cube || |
| 1509 | a->dim == ac_image_1darray || |
| 1510 | a->dim == ac_image_2darray || |
| 1511 | a->dim == ac_image_2darraymsaa; |
| 1512 | if (a->opcode == ac_image_get_lod) |
| 1513 | da = false; |
Marek Olšák | 4b2e5b9 | 2017-02-23 23:37:59 +0100 | [diff] [blame] | 1514 | |
Nicolai Hähnle | 625dcbb | 2018-03-23 11:20:24 +0100 | [diff] [blame] | 1515 | unsigned num_coords = |
| 1516 | a->opcode != ac_image_get_resinfo ? ac_num_coords(a->dim) : 0; |
| 1517 | LLVMValueRef addr; |
| 1518 | unsigned num_addr = 0; |
| 1519 | |
Samuel Pitoiset | d136a5f | 2018-04-23 17:05:10 +0200 | [diff] [blame] | 1520 | if (a->opcode == ac_image_get_lod) { |
| 1521 | switch (a->dim) { |
| 1522 | case ac_image_1darray: |
| 1523 | num_coords = 1; |
| 1524 | break; |
| 1525 | case ac_image_2darray: |
| 1526 | case ac_image_cube: |
| 1527 | num_coords = 2; |
| 1528 | break; |
| 1529 | default: |
| 1530 | break; |
| 1531 | } |
| 1532 | } |
| 1533 | |
Nicolai Hähnle | 625dcbb | 2018-03-23 11:20:24 +0100 | [diff] [blame] | 1534 | if (a->offset) |
| 1535 | args[num_addr++] = ac_to_integer(ctx, a->offset); |
| 1536 | if (a->bias) |
| 1537 | args[num_addr++] = ac_to_integer(ctx, a->bias); |
| 1538 | if (a->compare) |
| 1539 | args[num_addr++] = ac_to_integer(ctx, a->compare); |
| 1540 | if (a->derivs[0]) { |
| 1541 | unsigned num_derivs = ac_num_derivs(a->dim); |
| 1542 | for (unsigned i = 0; i < num_derivs; ++i) |
| 1543 | args[num_addr++] = ac_to_integer(ctx, a->derivs[i]); |
| 1544 | } |
| 1545 | for (unsigned i = 0; i < num_coords; ++i) |
| 1546 | args[num_addr++] = ac_to_integer(ctx, a->coords[i]); |
| 1547 | if (a->lod) |
| 1548 | args[num_addr++] = ac_to_integer(ctx, a->lod); |
| 1549 | |
| 1550 | unsigned pad_goal = util_next_power_of_two(num_addr); |
| 1551 | while (num_addr < pad_goal) |
| 1552 | args[num_addr++] = LLVMGetUndef(ctx->i32); |
| 1553 | |
| 1554 | addr = ac_build_gather_values(ctx, args, num_addr); |
| 1555 | |
| 1556 | unsigned num_args = 0; |
Nicolai Hähnle | 7406343 | 2018-04-20 09:29:57 +0200 | [diff] [blame] | 1557 | if (atomic || a->opcode == ac_image_store || a->opcode == ac_image_store_mip) { |
| 1558 | args[num_args++] = a->data[0]; |
| 1559 | if (a->opcode == ac_image_atomic_cmpswap) |
| 1560 | args[num_args++] = a->data[1]; |
| 1561 | } |
| 1562 | |
| 1563 | unsigned coords_arg = num_args; |
Marek Olšák | 3bf1e03 | 2018-02-02 19:26:49 +0100 | [diff] [blame] | 1564 | if (sample) |
Nicolai Hähnle | 625dcbb | 2018-03-23 11:20:24 +0100 | [diff] [blame] | 1565 | args[num_args++] = ac_to_float(ctx, addr); |
Marek Olšák | 3bf1e03 | 2018-02-02 19:26:49 +0100 | [diff] [blame] | 1566 | else |
Nicolai Hähnle | 625dcbb | 2018-03-23 11:20:24 +0100 | [diff] [blame] | 1567 | args[num_args++] = ac_to_integer(ctx, addr); |
Marek Olšák | 4b2e5b9 | 2017-02-23 23:37:59 +0100 | [diff] [blame] | 1568 | |
Marek Olšák | ad18d7f | 2017-02-23 23:00:19 +0100 | [diff] [blame] | 1569 | args[num_args++] = a->resource; |
Marek Olšák | 3bf1e03 | 2018-02-02 19:26:49 +0100 | [diff] [blame] | 1570 | if (sample) |
Marek Olšák | ad18d7f | 2017-02-23 23:00:19 +0100 | [diff] [blame] | 1571 | args[num_args++] = a->sampler; |
Nicolai Hähnle | 7406343 | 2018-04-20 09:29:57 +0200 | [diff] [blame] | 1572 | if (!atomic) { |
| 1573 | args[num_args++] = LLVMConstInt(ctx->i32, a->dmask, 0); |
| 1574 | if (sample) |
| 1575 | args[num_args++] = LLVMConstInt(ctx->i1, a->unorm, 0); |
| 1576 | args[num_args++] = a->cache_policy & ac_glc ? ctx->i1true : ctx->i1false; |
| 1577 | args[num_args++] = a->cache_policy & ac_slc ? ctx->i1true : ctx->i1false; |
| 1578 | args[num_args++] = ctx->i1false; /* lwe */ |
| 1579 | args[num_args++] = LLVMConstInt(ctx->i1, da, 0); |
| 1580 | } else { |
| 1581 | args[num_args++] = ctx->i1false; /* r128 */ |
| 1582 | args[num_args++] = LLVMConstInt(ctx->i1, da, 0); |
| 1583 | args[num_args++] = a->cache_policy & ac_slc ? ctx->i1true : ctx->i1false; |
| 1584 | } |
Marek Olšák | ad18d7f | 2017-02-23 23:00:19 +0100 | [diff] [blame] | 1585 | |
| 1586 | switch (a->opcode) { |
| 1587 | case ac_image_sample: |
Marek Olšák | 3bf1e03 | 2018-02-02 19:26:49 +0100 | [diff] [blame] | 1588 | name = "llvm.amdgcn.image.sample"; |
Marek Olšák | ad18d7f | 2017-02-23 23:00:19 +0100 | [diff] [blame] | 1589 | break; |
| 1590 | case ac_image_gather4: |
Marek Olšák | 3bf1e03 | 2018-02-02 19:26:49 +0100 | [diff] [blame] | 1591 | name = "llvm.amdgcn.image.gather4"; |
Marek Olšák | ad18d7f | 2017-02-23 23:00:19 +0100 | [diff] [blame] | 1592 | break; |
| 1593 | case ac_image_load: |
Marek Olšák | 3bf1e03 | 2018-02-02 19:26:49 +0100 | [diff] [blame] | 1594 | name = "llvm.amdgcn.image.load"; |
Marek Olšák | ad18d7f | 2017-02-23 23:00:19 +0100 | [diff] [blame] | 1595 | break; |
| 1596 | case ac_image_load_mip: |
Marek Olšák | 3bf1e03 | 2018-02-02 19:26:49 +0100 | [diff] [blame] | 1597 | name = "llvm.amdgcn.image.load.mip"; |
Marek Olšák | ad18d7f | 2017-02-23 23:00:19 +0100 | [diff] [blame] | 1598 | break; |
Nicolai Hähnle | 7406343 | 2018-04-20 09:29:57 +0200 | [diff] [blame] | 1599 | case ac_image_store: |
| 1600 | name = "llvm.amdgcn.image.store"; |
| 1601 | retty = ctx->voidt; |
| 1602 | break; |
| 1603 | case ac_image_store_mip: |
| 1604 | name = "llvm.amdgcn.image.store.mip"; |
| 1605 | retty = ctx->voidt; |
| 1606 | break; |
| 1607 | case ac_image_atomic: |
| 1608 | case ac_image_atomic_cmpswap: |
| 1609 | name = "llvm.amdgcn.image.atomic."; |
| 1610 | retty = ctx->i32; |
| 1611 | if (a->opcode == ac_image_atomic_cmpswap) { |
| 1612 | atomic_subop = "cmpswap"; |
| 1613 | } else { |
Nicolai Hähnle | a9a7993 | 2018-02-16 18:44:25 +0100 | [diff] [blame] | 1614 | atomic_subop = get_atomic_name(a->atomic); |
Nicolai Hähnle | 7406343 | 2018-04-20 09:29:57 +0200 | [diff] [blame] | 1615 | } |
| 1616 | break; |
Marek Olšák | ad18d7f | 2017-02-23 23:00:19 +0100 | [diff] [blame] | 1617 | case ac_image_get_lod: |
Marek Olšák | 3bf1e03 | 2018-02-02 19:26:49 +0100 | [diff] [blame] | 1618 | name = "llvm.amdgcn.image.getlod"; |
Marek Olšák | ad18d7f | 2017-02-23 23:00:19 +0100 | [diff] [blame] | 1619 | break; |
| 1620 | case ac_image_get_resinfo: |
Marek Olšák | 3bf1e03 | 2018-02-02 19:26:49 +0100 | [diff] [blame] | 1621 | name = "llvm.amdgcn.image.getresinfo"; |
Marek Olšák | ad18d7f | 2017-02-23 23:00:19 +0100 | [diff] [blame] | 1622 | break; |
Marek Olšák | 3bf1e03 | 2018-02-02 19:26:49 +0100 | [diff] [blame] | 1623 | default: |
| 1624 | unreachable("invalid image opcode"); |
Marek Olšák | ad18d7f | 2017-02-23 23:00:19 +0100 | [diff] [blame] | 1625 | } |
| 1626 | |
Nicolai Hähnle | 7406343 | 2018-04-20 09:29:57 +0200 | [diff] [blame] | 1627 | ac_build_type_name_for_intr(LLVMTypeOf(args[coords_arg]), coords_type, |
| 1628 | sizeof(coords_type)); |
Marek Olšák | 3bf1e03 | 2018-02-02 19:26:49 +0100 | [diff] [blame] | 1629 | |
Nicolai Hähnle | 7406343 | 2018-04-20 09:29:57 +0200 | [diff] [blame] | 1630 | if (atomic) { |
| 1631 | snprintf(intr_name, sizeof(intr_name), "llvm.amdgcn.image.atomic.%s.%s", |
| 1632 | atomic_subop, coords_type); |
| 1633 | } else { |
| 1634 | bool lod_suffix = |
| 1635 | a->lod && (a->opcode == ac_image_sample || a->opcode == ac_image_gather4); |
Nicolai Hähnle | 625dcbb | 2018-03-23 11:20:24 +0100 | [diff] [blame] | 1636 | |
Nicolai Hähnle | 7406343 | 2018-04-20 09:29:57 +0200 | [diff] [blame] | 1637 | snprintf(intr_name, sizeof(intr_name), "%s%s%s%s.v4f32.%s.v8i32", |
| 1638 | name, |
| 1639 | a->compare ? ".c" : "", |
| 1640 | a->bias ? ".b" : |
| 1641 | lod_suffix ? ".l" : |
| 1642 | a->derivs[0] ? ".d" : |
| 1643 | a->level_zero ? ".lz" : "", |
| 1644 | a->offset ? ".o" : "", |
| 1645 | coords_type); |
| 1646 | } |
Marek Olšák | ad18d7f | 2017-02-23 23:00:19 +0100 | [diff] [blame] | 1647 | |
Marek Olšák | 3bf1e03 | 2018-02-02 19:26:49 +0100 | [diff] [blame] | 1648 | LLVMValueRef result = |
Nicolai Hähnle | 7406343 | 2018-04-20 09:29:57 +0200 | [diff] [blame] | 1649 | ac_build_intrinsic(ctx, intr_name, retty, args, num_args, |
| 1650 | a->attributes); |
| 1651 | if (!sample && retty == ctx->v4f32) { |
Marek Olšák | 3bf1e03 | 2018-02-02 19:26:49 +0100 | [diff] [blame] | 1652 | result = LLVMBuildBitCast(ctx->builder, result, |
| 1653 | ctx->v4i32, ""); |
| 1654 | } |
| 1655 | return result; |
Marek Olšák | ad18d7f | 2017-02-23 23:00:19 +0100 | [diff] [blame] | 1656 | } |
Marek Olšák | 653ac0b | 2017-02-24 16:38:25 +0100 | [diff] [blame] | 1657 | |
Nicolai Hähnle | a9a7993 | 2018-02-16 18:44:25 +0100 | [diff] [blame] | 1658 | LLVMValueRef ac_build_image_opcode(struct ac_llvm_context *ctx, |
| 1659 | struct ac_image_args *a) |
| 1660 | { |
| 1661 | const char *overload[3] = { "", "", "" }; |
| 1662 | unsigned num_overloads = 0; |
| 1663 | LLVMValueRef args[18]; |
| 1664 | unsigned num_args = 0; |
Bas Nieuwenhuizen | 4fc2d5e | 2018-06-06 01:42:17 +0200 | [diff] [blame] | 1665 | enum ac_image_dim dim = a->dim; |
Nicolai Hähnle | a9a7993 | 2018-02-16 18:44:25 +0100 | [diff] [blame] | 1666 | |
| 1667 | assert(!a->lod || a->lod == ctx->i32_0 || a->lod == ctx->f32_0 || |
| 1668 | !a->level_zero); |
| 1669 | assert((a->opcode != ac_image_get_resinfo && a->opcode != ac_image_load_mip && |
| 1670 | a->opcode != ac_image_store_mip) || |
| 1671 | a->lod); |
| 1672 | assert(a->opcode == ac_image_sample || a->opcode == ac_image_gather4 || |
| 1673 | (!a->compare && !a->offset)); |
| 1674 | assert((a->opcode == ac_image_sample || a->opcode == ac_image_gather4 || |
| 1675 | a->opcode == ac_image_get_lod) || |
| 1676 | !a->bias); |
| 1677 | assert((a->bias ? 1 : 0) + |
| 1678 | (a->lod ? 1 : 0) + |
| 1679 | (a->level_zero ? 1 : 0) + |
| 1680 | (a->derivs[0] ? 1 : 0) <= 1); |
| 1681 | |
| 1682 | if (HAVE_LLVM < 0x0700) |
| 1683 | return ac_build_image_opcode_llvm6(ctx, a); |
| 1684 | |
Bas Nieuwenhuizen | 4fc2d5e | 2018-06-06 01:42:17 +0200 | [diff] [blame] | 1685 | if (a->opcode == ac_image_get_lod) { |
| 1686 | switch (dim) { |
| 1687 | case ac_image_1darray: |
| 1688 | dim = ac_image_1d; |
| 1689 | break; |
| 1690 | case ac_image_2darray: |
| 1691 | case ac_image_cube: |
| 1692 | dim = ac_image_2d; |
| 1693 | break; |
| 1694 | default: |
| 1695 | break; |
| 1696 | } |
| 1697 | } |
| 1698 | |
Nicolai Hähnle | a9a7993 | 2018-02-16 18:44:25 +0100 | [diff] [blame] | 1699 | bool sample = a->opcode == ac_image_sample || |
| 1700 | a->opcode == ac_image_gather4 || |
| 1701 | a->opcode == ac_image_get_lod; |
| 1702 | bool atomic = a->opcode == ac_image_atomic || |
| 1703 | a->opcode == ac_image_atomic_cmpswap; |
| 1704 | LLVMTypeRef coord_type = sample ? ctx->f32 : ctx->i32; |
| 1705 | |
| 1706 | if (atomic || a->opcode == ac_image_store || a->opcode == ac_image_store_mip) { |
| 1707 | args[num_args++] = a->data[0]; |
| 1708 | if (a->opcode == ac_image_atomic_cmpswap) |
| 1709 | args[num_args++] = a->data[1]; |
| 1710 | } |
| 1711 | |
| 1712 | if (!atomic) |
| 1713 | args[num_args++] = LLVMConstInt(ctx->i32, a->dmask, false); |
| 1714 | |
| 1715 | if (a->offset) |
| 1716 | args[num_args++] = ac_to_integer(ctx, a->offset); |
| 1717 | if (a->bias) { |
| 1718 | args[num_args++] = ac_to_float(ctx, a->bias); |
| 1719 | overload[num_overloads++] = ".f32"; |
| 1720 | } |
| 1721 | if (a->compare) |
| 1722 | args[num_args++] = ac_to_float(ctx, a->compare); |
| 1723 | if (a->derivs[0]) { |
Bas Nieuwenhuizen | 4fc2d5e | 2018-06-06 01:42:17 +0200 | [diff] [blame] | 1724 | unsigned count = ac_num_derivs(dim); |
Nicolai Hähnle | a9a7993 | 2018-02-16 18:44:25 +0100 | [diff] [blame] | 1725 | for (unsigned i = 0; i < count; ++i) |
| 1726 | args[num_args++] = ac_to_float(ctx, a->derivs[i]); |
| 1727 | overload[num_overloads++] = ".f32"; |
| 1728 | } |
| 1729 | unsigned num_coords = |
Bas Nieuwenhuizen | 4fc2d5e | 2018-06-06 01:42:17 +0200 | [diff] [blame] | 1730 | a->opcode != ac_image_get_resinfo ? ac_num_coords(dim) : 0; |
Nicolai Hähnle | a9a7993 | 2018-02-16 18:44:25 +0100 | [diff] [blame] | 1731 | for (unsigned i = 0; i < num_coords; ++i) |
| 1732 | args[num_args++] = LLVMBuildBitCast(ctx->builder, a->coords[i], coord_type, ""); |
| 1733 | if (a->lod) |
| 1734 | args[num_args++] = LLVMBuildBitCast(ctx->builder, a->lod, coord_type, ""); |
| 1735 | overload[num_overloads++] = sample ? ".f32" : ".i32"; |
| 1736 | |
| 1737 | args[num_args++] = a->resource; |
| 1738 | if (sample) { |
| 1739 | args[num_args++] = a->sampler; |
| 1740 | args[num_args++] = LLVMConstInt(ctx->i1, a->unorm, false); |
| 1741 | } |
| 1742 | |
| 1743 | args[num_args++] = ctx->i32_0; /* texfailctrl */ |
| 1744 | args[num_args++] = LLVMConstInt(ctx->i32, a->cache_policy, false); |
| 1745 | |
| 1746 | const char *name; |
| 1747 | const char *atomic_subop = ""; |
| 1748 | switch (a->opcode) { |
| 1749 | case ac_image_sample: name = "sample"; break; |
| 1750 | case ac_image_gather4: name = "gather4"; break; |
| 1751 | case ac_image_load: name = "load"; break; |
| 1752 | case ac_image_load_mip: name = "load.mip"; break; |
| 1753 | case ac_image_store: name = "store"; break; |
| 1754 | case ac_image_store_mip: name = "store.mip"; break; |
| 1755 | case ac_image_atomic: |
| 1756 | name = "atomic."; |
| 1757 | atomic_subop = get_atomic_name(a->atomic); |
| 1758 | break; |
| 1759 | case ac_image_atomic_cmpswap: |
| 1760 | name = "atomic."; |
| 1761 | atomic_subop = "cmpswap"; |
| 1762 | break; |
| 1763 | case ac_image_get_lod: name = "getlod"; break; |
| 1764 | case ac_image_get_resinfo: name = "getresinfo"; break; |
| 1765 | default: unreachable("invalid image opcode"); |
| 1766 | } |
| 1767 | |
| 1768 | const char *dimname; |
Bas Nieuwenhuizen | 4fc2d5e | 2018-06-06 01:42:17 +0200 | [diff] [blame] | 1769 | switch (dim) { |
Nicolai Hähnle | a9a7993 | 2018-02-16 18:44:25 +0100 | [diff] [blame] | 1770 | case ac_image_1d: dimname = "1d"; break; |
| 1771 | case ac_image_2d: dimname = "2d"; break; |
| 1772 | case ac_image_3d: dimname = "3d"; break; |
| 1773 | case ac_image_cube: dimname = "cube"; break; |
| 1774 | case ac_image_1darray: dimname = "1darray"; break; |
| 1775 | case ac_image_2darray: dimname = "2darray"; break; |
| 1776 | case ac_image_2dmsaa: dimname = "2dmsaa"; break; |
| 1777 | case ac_image_2darraymsaa: dimname = "2darraymsaa"; break; |
| 1778 | default: unreachable("invalid dim"); |
| 1779 | } |
| 1780 | |
| 1781 | bool lod_suffix = |
| 1782 | a->lod && (a->opcode == ac_image_sample || a->opcode == ac_image_gather4); |
| 1783 | char intr_name[96]; |
| 1784 | snprintf(intr_name, sizeof(intr_name), |
| 1785 | "llvm.amdgcn.image.%s%s" /* base name */ |
| 1786 | "%s%s%s" /* sample/gather modifiers */ |
| 1787 | ".%s.%s%s%s%s", /* dimension and type overloads */ |
| 1788 | name, atomic_subop, |
| 1789 | a->compare ? ".c" : "", |
| 1790 | a->bias ? ".b" : |
| 1791 | lod_suffix ? ".l" : |
| 1792 | a->derivs[0] ? ".d" : |
| 1793 | a->level_zero ? ".lz" : "", |
| 1794 | a->offset ? ".o" : "", |
| 1795 | dimname, |
| 1796 | atomic ? "i32" : "v4f32", |
| 1797 | overload[0], overload[1], overload[2]); |
| 1798 | |
| 1799 | LLVMTypeRef retty; |
| 1800 | if (atomic) |
| 1801 | retty = ctx->i32; |
| 1802 | else if (a->opcode == ac_image_store || a->opcode == ac_image_store_mip) |
| 1803 | retty = ctx->voidt; |
| 1804 | else |
| 1805 | retty = ctx->v4f32; |
| 1806 | |
| 1807 | LLVMValueRef result = |
| 1808 | ac_build_intrinsic(ctx, intr_name, retty, args, num_args, |
| 1809 | a->attributes); |
| 1810 | if (!sample && retty == ctx->v4f32) { |
| 1811 | result = LLVMBuildBitCast(ctx->builder, result, |
| 1812 | ctx->v4i32, ""); |
| 1813 | } |
| 1814 | return result; |
| 1815 | } |
| 1816 | |
Marek Olšák | 7f1446a | 2017-02-26 00:41:37 +0100 | [diff] [blame] | 1817 | LLVMValueRef ac_build_cvt_pkrtz_f16(struct ac_llvm_context *ctx, |
| 1818 | LLVMValueRef args[2]) |
Marek Olšák | 653ac0b | 2017-02-24 16:38:25 +0100 | [diff] [blame] | 1819 | { |
Marek Olšák | f9eb1ef | 2018-05-16 22:23:41 -0400 | [diff] [blame] | 1820 | LLVMTypeRef v2f16 = |
| 1821 | LLVMVectorType(LLVMHalfTypeInContext(ctx->context), 2); |
| 1822 | LLVMValueRef res = |
| 1823 | ac_build_intrinsic(ctx, "llvm.amdgcn.cvt.pkrtz", |
| 1824 | v2f16, args, 2, |
| 1825 | AC_FUNC_ATTR_READNONE); |
| 1826 | return LLVMBuildBitCast(ctx->builder, res, ctx->i32, ""); |
Marek Olšák | 653ac0b | 2017-02-24 16:38:25 +0100 | [diff] [blame] | 1827 | } |
Marek Olšák | 9c09592 | 2017-02-24 22:44:18 +0100 | [diff] [blame] | 1828 | |
Marek Olšák | 847d0a3 | 2018-01-02 04:34:53 +0100 | [diff] [blame] | 1829 | /* Upper 16 bits must be zero. */ |
| 1830 | static LLVMValueRef ac_llvm_pack_two_int16(struct ac_llvm_context *ctx, |
| 1831 | LLVMValueRef val[2]) |
| 1832 | { |
| 1833 | return LLVMBuildOr(ctx->builder, val[0], |
| 1834 | LLVMBuildShl(ctx->builder, val[1], |
| 1835 | LLVMConstInt(ctx->i32, 16, 0), |
| 1836 | ""), ""); |
| 1837 | } |
| 1838 | |
| 1839 | /* Upper 16 bits are ignored and will be dropped. */ |
| 1840 | static LLVMValueRef ac_llvm_pack_two_int32_as_int16(struct ac_llvm_context *ctx, |
| 1841 | LLVMValueRef val[2]) |
| 1842 | { |
| 1843 | LLVMValueRef v[2] = { |
| 1844 | LLVMBuildAnd(ctx->builder, val[0], |
| 1845 | LLVMConstInt(ctx->i32, 0xffff, 0), ""), |
| 1846 | val[1], |
| 1847 | }; |
| 1848 | return ac_llvm_pack_two_int16(ctx, v); |
| 1849 | } |
| 1850 | |
| 1851 | LLVMValueRef ac_build_cvt_pknorm_i16(struct ac_llvm_context *ctx, |
| 1852 | LLVMValueRef args[2]) |
| 1853 | { |
| 1854 | if (HAVE_LLVM >= 0x0600) { |
| 1855 | LLVMValueRef res = |
| 1856 | ac_build_intrinsic(ctx, "llvm.amdgcn.cvt.pknorm.i16", |
| 1857 | ctx->v2i16, args, 2, |
| 1858 | AC_FUNC_ATTR_READNONE); |
| 1859 | return LLVMBuildBitCast(ctx->builder, res, ctx->i32, ""); |
| 1860 | } |
| 1861 | |
| 1862 | LLVMValueRef val[2]; |
| 1863 | |
| 1864 | for (int chan = 0; chan < 2; chan++) { |
| 1865 | /* Clamp between [-1, 1]. */ |
| 1866 | val[chan] = ac_build_fmin(ctx, args[chan], ctx->f32_1); |
| 1867 | val[chan] = ac_build_fmax(ctx, val[chan], LLVMConstReal(ctx->f32, -1)); |
| 1868 | /* Convert to a signed integer in [-32767, 32767]. */ |
| 1869 | val[chan] = LLVMBuildFMul(ctx->builder, val[chan], |
| 1870 | LLVMConstReal(ctx->f32, 32767), ""); |
| 1871 | /* If positive, add 0.5, else add -0.5. */ |
| 1872 | val[chan] = LLVMBuildFAdd(ctx->builder, val[chan], |
| 1873 | LLVMBuildSelect(ctx->builder, |
| 1874 | LLVMBuildFCmp(ctx->builder, LLVMRealOGE, |
| 1875 | val[chan], ctx->f32_0, ""), |
| 1876 | LLVMConstReal(ctx->f32, 0.5), |
| 1877 | LLVMConstReal(ctx->f32, -0.5), ""), ""); |
| 1878 | val[chan] = LLVMBuildFPToSI(ctx->builder, val[chan], ctx->i32, ""); |
| 1879 | } |
| 1880 | return ac_llvm_pack_two_int32_as_int16(ctx, val); |
| 1881 | } |
| 1882 | |
| 1883 | LLVMValueRef ac_build_cvt_pknorm_u16(struct ac_llvm_context *ctx, |
| 1884 | LLVMValueRef args[2]) |
| 1885 | { |
| 1886 | if (HAVE_LLVM >= 0x0600) { |
| 1887 | LLVMValueRef res = |
| 1888 | ac_build_intrinsic(ctx, "llvm.amdgcn.cvt.pknorm.u16", |
| 1889 | ctx->v2i16, args, 2, |
| 1890 | AC_FUNC_ATTR_READNONE); |
| 1891 | return LLVMBuildBitCast(ctx->builder, res, ctx->i32, ""); |
| 1892 | } |
| 1893 | |
| 1894 | LLVMValueRef val[2]; |
| 1895 | |
| 1896 | for (int chan = 0; chan < 2; chan++) { |
| 1897 | val[chan] = ac_build_clamp(ctx, args[chan]); |
| 1898 | val[chan] = LLVMBuildFMul(ctx->builder, val[chan], |
| 1899 | LLVMConstReal(ctx->f32, 65535), ""); |
| 1900 | val[chan] = LLVMBuildFAdd(ctx->builder, val[chan], |
| 1901 | LLVMConstReal(ctx->f32, 0.5), ""); |
| 1902 | val[chan] = LLVMBuildFPToUI(ctx->builder, val[chan], |
| 1903 | ctx->i32, ""); |
| 1904 | } |
| 1905 | return ac_llvm_pack_two_int32_as_int16(ctx, val); |
| 1906 | } |
| 1907 | |
| 1908 | /* The 8-bit and 10-bit clamping is for HW workarounds. */ |
| 1909 | LLVMValueRef ac_build_cvt_pk_i16(struct ac_llvm_context *ctx, |
| 1910 | LLVMValueRef args[2], unsigned bits, bool hi) |
| 1911 | { |
| 1912 | assert(bits == 8 || bits == 10 || bits == 16); |
| 1913 | |
| 1914 | LLVMValueRef max_rgb = LLVMConstInt(ctx->i32, |
| 1915 | bits == 8 ? 127 : bits == 10 ? 511 : 32767, 0); |
| 1916 | LLVMValueRef min_rgb = LLVMConstInt(ctx->i32, |
| 1917 | bits == 8 ? -128 : bits == 10 ? -512 : -32768, 0); |
| 1918 | LLVMValueRef max_alpha = |
| 1919 | bits != 10 ? max_rgb : ctx->i32_1; |
| 1920 | LLVMValueRef min_alpha = |
| 1921 | bits != 10 ? min_rgb : LLVMConstInt(ctx->i32, -2, 0); |
| 1922 | bool has_intrinsic = HAVE_LLVM >= 0x0600; |
| 1923 | |
| 1924 | /* Clamp. */ |
| 1925 | if (!has_intrinsic || bits != 16) { |
| 1926 | for (int i = 0; i < 2; i++) { |
| 1927 | bool alpha = hi && i == 1; |
| 1928 | args[i] = ac_build_imin(ctx, args[i], |
| 1929 | alpha ? max_alpha : max_rgb); |
| 1930 | args[i] = ac_build_imax(ctx, args[i], |
| 1931 | alpha ? min_alpha : min_rgb); |
| 1932 | } |
| 1933 | } |
| 1934 | |
| 1935 | if (has_intrinsic) { |
| 1936 | LLVMValueRef res = |
| 1937 | ac_build_intrinsic(ctx, "llvm.amdgcn.cvt.pk.i16", |
| 1938 | ctx->v2i16, args, 2, |
| 1939 | AC_FUNC_ATTR_READNONE); |
| 1940 | return LLVMBuildBitCast(ctx->builder, res, ctx->i32, ""); |
| 1941 | } |
| 1942 | |
| 1943 | return ac_llvm_pack_two_int32_as_int16(ctx, args); |
| 1944 | } |
| 1945 | |
| 1946 | /* The 8-bit and 10-bit clamping is for HW workarounds. */ |
| 1947 | LLVMValueRef ac_build_cvt_pk_u16(struct ac_llvm_context *ctx, |
| 1948 | LLVMValueRef args[2], unsigned bits, bool hi) |
| 1949 | { |
| 1950 | assert(bits == 8 || bits == 10 || bits == 16); |
| 1951 | |
| 1952 | LLVMValueRef max_rgb = LLVMConstInt(ctx->i32, |
| 1953 | bits == 8 ? 255 : bits == 10 ? 1023 : 65535, 0); |
| 1954 | LLVMValueRef max_alpha = |
| 1955 | bits != 10 ? max_rgb : LLVMConstInt(ctx->i32, 3, 0); |
| 1956 | bool has_intrinsic = HAVE_LLVM >= 0x0600; |
| 1957 | |
| 1958 | /* Clamp. */ |
| 1959 | if (!has_intrinsic || bits != 16) { |
| 1960 | for (int i = 0; i < 2; i++) { |
| 1961 | bool alpha = hi && i == 1; |
| 1962 | args[i] = ac_build_umin(ctx, args[i], |
| 1963 | alpha ? max_alpha : max_rgb); |
| 1964 | } |
| 1965 | } |
| 1966 | |
| 1967 | if (has_intrinsic) { |
| 1968 | LLVMValueRef res = |
| 1969 | ac_build_intrinsic(ctx, "llvm.amdgcn.cvt.pk.u16", |
| 1970 | ctx->v2i16, args, 2, |
| 1971 | AC_FUNC_ATTR_READNONE); |
| 1972 | return LLVMBuildBitCast(ctx->builder, res, ctx->i32, ""); |
| 1973 | } |
| 1974 | |
| 1975 | return ac_llvm_pack_two_int16(ctx, args); |
| 1976 | } |
| 1977 | |
Marek Olšák | 2a414c3 | 2017-10-04 05:07:50 +0200 | [diff] [blame] | 1978 | LLVMValueRef ac_build_wqm_vote(struct ac_llvm_context *ctx, LLVMValueRef i1) |
| 1979 | { |
| 1980 | assert(HAVE_LLVM >= 0x0600); |
| 1981 | return ac_build_intrinsic(ctx, "llvm.amdgcn.wqm.vote", ctx->i1, |
| 1982 | &i1, 1, AC_FUNC_ATTR_READNONE); |
| 1983 | } |
| 1984 | |
Marek Olšák | 1ff9e27 | 2017-10-04 04:51:39 +0200 | [diff] [blame] | 1985 | 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] | 1986 | { |
Marek Olšák | 478afbe | 2017-10-04 05:06:57 +0200 | [diff] [blame] | 1987 | if (HAVE_LLVM >= 0x0600) { |
| 1988 | ac_build_intrinsic(ctx, "llvm.amdgcn.kill", ctx->voidt, |
| 1989 | &i1, 1, 0); |
| 1990 | return; |
| 1991 | } |
| 1992 | |
Marek Olšák | 1ff9e27 | 2017-10-04 04:51:39 +0200 | [diff] [blame] | 1993 | LLVMValueRef value = LLVMBuildSelect(ctx->builder, i1, |
| 1994 | LLVMConstReal(ctx->f32, 1), |
| 1995 | LLVMConstReal(ctx->f32, -1), ""); |
| 1996 | ac_build_intrinsic(ctx, "llvm.AMDGPU.kill", ctx->voidt, |
| 1997 | &value, 1, AC_FUNC_ATTR_LEGACY); |
Marek Olšák | 9c09592 | 2017-02-24 22:44:18 +0100 | [diff] [blame] | 1998 | } |
Marek Olšák | d4324dd | 2017-02-24 23:06:31 +0100 | [diff] [blame] | 1999 | |
Marek Olšák | 7f1446a | 2017-02-26 00:41:37 +0100 | [diff] [blame] | 2000 | LLVMValueRef ac_build_bfe(struct ac_llvm_context *ctx, LLVMValueRef input, |
| 2001 | LLVMValueRef offset, LLVMValueRef width, |
| 2002 | bool is_signed) |
Marek Olšák | d4324dd | 2017-02-24 23:06:31 +0100 | [diff] [blame] | 2003 | { |
| 2004 | LLVMValueRef args[] = { |
| 2005 | input, |
| 2006 | offset, |
| 2007 | width, |
| 2008 | }; |
| 2009 | |
Marek Olšák | 7f1446a | 2017-02-26 00:41:37 +0100 | [diff] [blame] | 2010 | return ac_build_intrinsic(ctx, |
Marek Olšák | f9eb1ef | 2018-05-16 22:23:41 -0400 | [diff] [blame] | 2011 | is_signed ? "llvm.amdgcn.sbfe.i32" : |
| 2012 | "llvm.amdgcn.ubfe.i32", |
Marek Olšák | 7f1446a | 2017-02-26 00:41:37 +0100 | [diff] [blame] | 2013 | ctx->i32, args, 3, |
Marek Olšák | f9eb1ef | 2018-05-16 22:23:41 -0400 | [diff] [blame] | 2014 | AC_FUNC_ATTR_READNONE); |
Marek Olšák | d4324dd | 2017-02-24 23:06:31 +0100 | [diff] [blame] | 2015 | } |
Dave Airlie | 10ae83a | 2017-03-06 08:37:22 +1000 | [diff] [blame] | 2016 | |
Samuel Pitoiset | 225b198 | 2017-12-12 18:10:23 +0100 | [diff] [blame] | 2017 | void ac_build_waitcnt(struct ac_llvm_context *ctx, unsigned simm16) |
| 2018 | { |
| 2019 | LLVMValueRef args[1] = { |
| 2020 | LLVMConstInt(ctx->i32, simm16, false), |
| 2021 | }; |
| 2022 | ac_build_intrinsic(ctx, "llvm.amdgcn.s.waitcnt", |
| 2023 | ctx->voidt, args, 1, 0); |
| 2024 | } |
| 2025 | |
Samuel Pitoiset | 459e339 | 2018-03-02 15:01:30 +0100 | [diff] [blame] | 2026 | LLVMValueRef ac_build_fract(struct ac_llvm_context *ctx, LLVMValueRef src0, |
| 2027 | unsigned bitsize) |
| 2028 | { |
| 2029 | LLVMTypeRef type; |
| 2030 | char *intr; |
| 2031 | |
| 2032 | if (bitsize == 32) { |
| 2033 | intr = "llvm.floor.f32"; |
| 2034 | type = ctx->f32; |
| 2035 | } else { |
| 2036 | intr = "llvm.floor.f64"; |
| 2037 | type = ctx->f64; |
| 2038 | } |
| 2039 | |
| 2040 | LLVMValueRef params[] = { |
| 2041 | src0, |
| 2042 | }; |
| 2043 | LLVMValueRef floor = ac_build_intrinsic(ctx, intr, type, params, 1, |
| 2044 | AC_FUNC_ATTR_READNONE); |
| 2045 | return LLVMBuildFSub(ctx->builder, src0, floor, ""); |
| 2046 | } |
| 2047 | |
Samuel Pitoiset | e8bdde2 | 2018-03-02 15:01:31 +0100 | [diff] [blame] | 2048 | LLVMValueRef ac_build_isign(struct ac_llvm_context *ctx, LLVMValueRef src0, |
| 2049 | unsigned bitsize) |
| 2050 | { |
| 2051 | LLVMValueRef cmp, val, zero, one; |
| 2052 | LLVMTypeRef type; |
| 2053 | |
| 2054 | if (bitsize == 32) { |
| 2055 | type = ctx->i32; |
| 2056 | zero = ctx->i32_0; |
| 2057 | one = ctx->i32_1; |
| 2058 | } else { |
| 2059 | type = ctx->i64; |
| 2060 | zero = ctx->i64_0; |
| 2061 | one = ctx->i64_1; |
| 2062 | } |
| 2063 | |
| 2064 | cmp = LLVMBuildICmp(ctx->builder, LLVMIntSGT, src0, zero, ""); |
| 2065 | val = LLVMBuildSelect(ctx->builder, cmp, one, src0, ""); |
| 2066 | cmp = LLVMBuildICmp(ctx->builder, LLVMIntSGE, val, zero, ""); |
| 2067 | val = LLVMBuildSelect(ctx->builder, cmp, val, LLVMConstInt(type, -1, true), ""); |
| 2068 | return val; |
| 2069 | } |
| 2070 | |
Samuel Pitoiset | 322a51b | 2018-03-02 15:01:32 +0100 | [diff] [blame] | 2071 | LLVMValueRef ac_build_fsign(struct ac_llvm_context *ctx, LLVMValueRef src0, |
| 2072 | unsigned bitsize) |
| 2073 | { |
| 2074 | LLVMValueRef cmp, val, zero, one; |
| 2075 | LLVMTypeRef type; |
| 2076 | |
| 2077 | if (bitsize == 32) { |
| 2078 | type = ctx->f32; |
| 2079 | zero = ctx->f32_0; |
| 2080 | one = ctx->f32_1; |
| 2081 | } else { |
| 2082 | type = ctx->f64; |
| 2083 | zero = ctx->f64_0; |
| 2084 | one = ctx->f64_1; |
| 2085 | } |
| 2086 | |
| 2087 | cmp = LLVMBuildFCmp(ctx->builder, LLVMRealOGT, src0, zero, ""); |
| 2088 | val = LLVMBuildSelect(ctx->builder, cmp, one, src0, ""); |
| 2089 | cmp = LLVMBuildFCmp(ctx->builder, LLVMRealOGE, val, zero, ""); |
| 2090 | val = LLVMBuildSelect(ctx->builder, cmp, val, LLVMConstReal(type, -1.0), ""); |
| 2091 | return val; |
| 2092 | } |
| 2093 | |
Marek Olšák | f9eb1ef | 2018-05-16 22:23:41 -0400 | [diff] [blame] | 2094 | #define AC_EXP_TARGET 0 |
| 2095 | #define AC_EXP_ENABLED_CHANNELS 1 |
| 2096 | #define AC_EXP_OUT0 2 |
Dave Airlie | e265917 | 2017-04-25 23:33:29 +0100 | [diff] [blame] | 2097 | |
Marek Olšák | faa3747 | 2017-04-29 23:47:08 +0200 | [diff] [blame] | 2098 | enum ac_ir_type { |
| 2099 | AC_IR_UNDEF, |
| 2100 | AC_IR_CONST, |
| 2101 | AC_IR_VALUE, |
| 2102 | }; |
| 2103 | |
| 2104 | struct ac_vs_exp_chan |
| 2105 | { |
| 2106 | LLVMValueRef value; |
| 2107 | float const_float; |
| 2108 | enum ac_ir_type type; |
| 2109 | }; |
| 2110 | |
| 2111 | struct ac_vs_exp_inst { |
| 2112 | unsigned offset; |
| 2113 | LLVMValueRef inst; |
| 2114 | struct ac_vs_exp_chan chan[4]; |
| 2115 | }; |
| 2116 | |
| 2117 | struct ac_vs_exports { |
| 2118 | unsigned num; |
| 2119 | struct ac_vs_exp_inst exp[VARYING_SLOT_MAX]; |
| 2120 | }; |
| 2121 | |
Dave Airlie | e265917 | 2017-04-25 23:33:29 +0100 | [diff] [blame] | 2122 | /* Return true if the PARAM export has been eliminated. */ |
| 2123 | static bool ac_eliminate_const_output(uint8_t *vs_output_param_offset, |
| 2124 | uint32_t num_outputs, |
Marek Olšák | faa3747 | 2017-04-29 23:47:08 +0200 | [diff] [blame] | 2125 | struct ac_vs_exp_inst *exp) |
Dave Airlie | e265917 | 2017-04-25 23:33:29 +0100 | [diff] [blame] | 2126 | { |
| 2127 | unsigned i, default_val; /* SPI_PS_INPUT_CNTL_i.DEFAULT_VAL */ |
| 2128 | bool is_zero[4] = {}, is_one[4] = {}; |
| 2129 | |
| 2130 | for (i = 0; i < 4; i++) { |
Dave Airlie | e265917 | 2017-04-25 23:33:29 +0100 | [diff] [blame] | 2131 | /* It's a constant expression. Undef outputs are eliminated too. */ |
Marek Olšák | faa3747 | 2017-04-29 23:47:08 +0200 | [diff] [blame] | 2132 | if (exp->chan[i].type == AC_IR_UNDEF) { |
Dave Airlie | e265917 | 2017-04-25 23:33:29 +0100 | [diff] [blame] | 2133 | is_zero[i] = true; |
| 2134 | is_one[i] = true; |
Marek Olšák | faa3747 | 2017-04-29 23:47:08 +0200 | [diff] [blame] | 2135 | } else if (exp->chan[i].type == AC_IR_CONST) { |
| 2136 | if (exp->chan[i].const_float == 0) |
Dave Airlie | e265917 | 2017-04-25 23:33:29 +0100 | [diff] [blame] | 2137 | is_zero[i] = true; |
Marek Olšák | faa3747 | 2017-04-29 23:47:08 +0200 | [diff] [blame] | 2138 | else if (exp->chan[i].const_float == 1) |
Dave Airlie | e265917 | 2017-04-25 23:33:29 +0100 | [diff] [blame] | 2139 | is_one[i] = true; |
| 2140 | else |
| 2141 | return false; /* other constant */ |
| 2142 | } else |
| 2143 | return false; |
| 2144 | } |
| 2145 | |
| 2146 | /* Only certain combinations of 0 and 1 can be eliminated. */ |
| 2147 | if (is_zero[0] && is_zero[1] && is_zero[2]) |
| 2148 | default_val = is_zero[3] ? 0 : 1; |
| 2149 | else if (is_one[0] && is_one[1] && is_one[2]) |
| 2150 | default_val = is_zero[3] ? 2 : 3; |
| 2151 | else |
| 2152 | return false; |
| 2153 | |
| 2154 | /* The PARAM export can be represented as DEFAULT_VAL. Kill it. */ |
Marek Olšák | faa3747 | 2017-04-29 23:47:08 +0200 | [diff] [blame] | 2155 | LLVMInstructionEraseFromParent(exp->inst); |
Dave Airlie | e265917 | 2017-04-25 23:33:29 +0100 | [diff] [blame] | 2156 | |
| 2157 | /* Change OFFSET to DEFAULT_VAL. */ |
| 2158 | for (i = 0; i < num_outputs; i++) { |
Marek Olšák | faa3747 | 2017-04-29 23:47:08 +0200 | [diff] [blame] | 2159 | if (vs_output_param_offset[i] == exp->offset) { |
Dave Airlie | e265917 | 2017-04-25 23:33:29 +0100 | [diff] [blame] | 2160 | vs_output_param_offset[i] = |
| 2161 | AC_EXP_PARAM_DEFAULT_VAL_0000 + default_val; |
| 2162 | break; |
| 2163 | } |
| 2164 | } |
| 2165 | return true; |
| 2166 | } |
| 2167 | |
Samuel Pitoiset | 675dde1 | 2018-03-01 11:54:21 +0100 | [diff] [blame] | 2168 | static bool ac_eliminate_duplicated_output(struct ac_llvm_context *ctx, |
| 2169 | uint8_t *vs_output_param_offset, |
Marek Olšák | b087154 | 2017-04-29 23:56:03 +0200 | [diff] [blame] | 2170 | uint32_t num_outputs, |
| 2171 | struct ac_vs_exports *processed, |
| 2172 | struct ac_vs_exp_inst *exp) |
| 2173 | { |
| 2174 | unsigned p, copy_back_channels = 0; |
| 2175 | |
| 2176 | /* See if the output is already in the list of processed outputs. |
| 2177 | * The LLVMValueRef comparison relies on SSA. |
| 2178 | */ |
| 2179 | for (p = 0; p < processed->num; p++) { |
| 2180 | bool different = false; |
| 2181 | |
| 2182 | for (unsigned j = 0; j < 4; j++) { |
| 2183 | struct ac_vs_exp_chan *c1 = &processed->exp[p].chan[j]; |
| 2184 | struct ac_vs_exp_chan *c2 = &exp->chan[j]; |
| 2185 | |
| 2186 | /* Treat undef as a match. */ |
| 2187 | if (c2->type == AC_IR_UNDEF) |
| 2188 | continue; |
| 2189 | |
| 2190 | /* If c1 is undef but c2 isn't, we can copy c2 to c1 |
| 2191 | * and consider the instruction duplicated. |
| 2192 | */ |
| 2193 | if (c1->type == AC_IR_UNDEF) { |
| 2194 | copy_back_channels |= 1 << j; |
| 2195 | continue; |
| 2196 | } |
| 2197 | |
| 2198 | /* Test whether the channels are not equal. */ |
| 2199 | if (c1->type != c2->type || |
| 2200 | (c1->type == AC_IR_CONST && |
| 2201 | c1->const_float != c2->const_float) || |
| 2202 | (c1->type == AC_IR_VALUE && |
| 2203 | c1->value != c2->value)) { |
| 2204 | different = true; |
| 2205 | break; |
| 2206 | } |
| 2207 | } |
| 2208 | if (!different) |
| 2209 | break; |
| 2210 | |
| 2211 | copy_back_channels = 0; |
| 2212 | } |
| 2213 | if (p == processed->num) |
| 2214 | return false; |
| 2215 | |
| 2216 | /* If a match was found, but the matching export has undef where the new |
| 2217 | * one has a normal value, copy the normal value to the undef channel. |
| 2218 | */ |
| 2219 | struct ac_vs_exp_inst *match = &processed->exp[p]; |
| 2220 | |
Samuel Pitoiset | 675dde1 | 2018-03-01 11:54:21 +0100 | [diff] [blame] | 2221 | /* Get current enabled channels mask. */ |
| 2222 | LLVMValueRef arg = LLVMGetOperand(match->inst, AC_EXP_ENABLED_CHANNELS); |
| 2223 | unsigned enabled_channels = LLVMConstIntGetZExtValue(arg); |
| 2224 | |
Marek Olšák | b087154 | 2017-04-29 23:56:03 +0200 | [diff] [blame] | 2225 | while (copy_back_channels) { |
| 2226 | unsigned chan = u_bit_scan(©_back_channels); |
| 2227 | |
| 2228 | assert(match->chan[chan].type == AC_IR_UNDEF); |
| 2229 | LLVMSetOperand(match->inst, AC_EXP_OUT0 + chan, |
| 2230 | exp->chan[chan].value); |
| 2231 | match->chan[chan] = exp->chan[chan]; |
Samuel Pitoiset | 675dde1 | 2018-03-01 11:54:21 +0100 | [diff] [blame] | 2232 | |
| 2233 | /* Update number of enabled channels because the original mask |
| 2234 | * is not always 0xf. |
| 2235 | */ |
| 2236 | enabled_channels |= (1 << chan); |
| 2237 | LLVMSetOperand(match->inst, AC_EXP_ENABLED_CHANNELS, |
| 2238 | LLVMConstInt(ctx->i32, enabled_channels, 0)); |
Marek Olšák | b087154 | 2017-04-29 23:56:03 +0200 | [diff] [blame] | 2239 | } |
| 2240 | |
| 2241 | /* The PARAM export is duplicated. Kill it. */ |
| 2242 | LLVMInstructionEraseFromParent(exp->inst); |
| 2243 | |
| 2244 | /* Change OFFSET to the matching export. */ |
| 2245 | for (unsigned i = 0; i < num_outputs; i++) { |
| 2246 | if (vs_output_param_offset[i] == exp->offset) { |
| 2247 | vs_output_param_offset[i] = match->offset; |
| 2248 | break; |
| 2249 | } |
| 2250 | } |
| 2251 | return true; |
| 2252 | } |
| 2253 | |
Marek Olšák | 7647e90 | 2017-04-29 23:53:08 +0200 | [diff] [blame] | 2254 | void ac_optimize_vs_outputs(struct ac_llvm_context *ctx, |
| 2255 | LLVMValueRef main_fn, |
| 2256 | uint8_t *vs_output_param_offset, |
| 2257 | uint32_t num_outputs, |
| 2258 | uint8_t *num_param_exports) |
Dave Airlie | e265917 | 2017-04-25 23:33:29 +0100 | [diff] [blame] | 2259 | { |
| 2260 | LLVMBasicBlockRef bb; |
| 2261 | bool removed_any = false; |
| 2262 | struct ac_vs_exports exports; |
| 2263 | |
Dave Airlie | e265917 | 2017-04-25 23:33:29 +0100 | [diff] [blame] | 2264 | exports.num = 0; |
| 2265 | |
| 2266 | /* Process all LLVM instructions. */ |
| 2267 | bb = LLVMGetFirstBasicBlock(main_fn); |
| 2268 | while (bb) { |
| 2269 | LLVMValueRef inst = LLVMGetFirstInstruction(bb); |
| 2270 | |
| 2271 | while (inst) { |
| 2272 | LLVMValueRef cur = inst; |
| 2273 | inst = LLVMGetNextInstruction(inst); |
Marek Olšák | faa3747 | 2017-04-29 23:47:08 +0200 | [diff] [blame] | 2274 | struct ac_vs_exp_inst exp; |
Dave Airlie | e265917 | 2017-04-25 23:33:29 +0100 | [diff] [blame] | 2275 | |
| 2276 | if (LLVMGetInstructionOpcode(cur) != LLVMCall) |
| 2277 | continue; |
| 2278 | |
| 2279 | LLVMValueRef callee = ac_llvm_get_called_value(cur); |
| 2280 | |
| 2281 | if (!ac_llvm_is_function(callee)) |
| 2282 | continue; |
| 2283 | |
| 2284 | const char *name = LLVMGetValueName(callee); |
| 2285 | unsigned num_args = LLVMCountParams(callee); |
| 2286 | |
| 2287 | /* Check if this is an export instruction. */ |
| 2288 | if ((num_args != 9 && num_args != 8) || |
| 2289 | (strcmp(name, "llvm.SI.export") && |
| 2290 | strcmp(name, "llvm.amdgcn.exp.f32"))) |
| 2291 | continue; |
| 2292 | |
| 2293 | LLVMValueRef arg = LLVMGetOperand(cur, AC_EXP_TARGET); |
| 2294 | unsigned target = LLVMConstIntGetZExtValue(arg); |
| 2295 | |
| 2296 | if (target < V_008DFC_SQ_EXP_PARAM) |
| 2297 | continue; |
| 2298 | |
| 2299 | target -= V_008DFC_SQ_EXP_PARAM; |
| 2300 | |
Marek Olšák | faa3747 | 2017-04-29 23:47:08 +0200 | [diff] [blame] | 2301 | /* Parse the instruction. */ |
| 2302 | memset(&exp, 0, sizeof(exp)); |
| 2303 | exp.offset = target; |
| 2304 | exp.inst = cur; |
| 2305 | |
| 2306 | for (unsigned i = 0; i < 4; i++) { |
| 2307 | LLVMValueRef v = LLVMGetOperand(cur, AC_EXP_OUT0 + i); |
| 2308 | |
| 2309 | exp.chan[i].value = v; |
| 2310 | |
| 2311 | if (LLVMIsUndef(v)) { |
| 2312 | exp.chan[i].type = AC_IR_UNDEF; |
| 2313 | } else if (LLVMIsAConstantFP(v)) { |
| 2314 | LLVMBool loses_info; |
| 2315 | exp.chan[i].type = AC_IR_CONST; |
| 2316 | exp.chan[i].const_float = |
| 2317 | LLVMConstRealGetDouble(v, &loses_info); |
| 2318 | } else { |
| 2319 | exp.chan[i].type = AC_IR_VALUE; |
| 2320 | } |
| 2321 | } |
| 2322 | |
Marek Olšák | b087154 | 2017-04-29 23:56:03 +0200 | [diff] [blame] | 2323 | /* Eliminate constant and duplicated PARAM exports. */ |
Dave Airlie | e265917 | 2017-04-25 23:33:29 +0100 | [diff] [blame] | 2324 | if (ac_eliminate_const_output(vs_output_param_offset, |
Marek Olšák | b087154 | 2017-04-29 23:56:03 +0200 | [diff] [blame] | 2325 | num_outputs, &exp) || |
Samuel Pitoiset | 675dde1 | 2018-03-01 11:54:21 +0100 | [diff] [blame] | 2326 | ac_eliminate_duplicated_output(ctx, |
| 2327 | vs_output_param_offset, |
Marek Olšák | b087154 | 2017-04-29 23:56:03 +0200 | [diff] [blame] | 2328 | num_outputs, &exports, |
| 2329 | &exp)) { |
Dave Airlie | e265917 | 2017-04-25 23:33:29 +0100 | [diff] [blame] | 2330 | removed_any = true; |
| 2331 | } else { |
Marek Olšák | faa3747 | 2017-04-29 23:47:08 +0200 | [diff] [blame] | 2332 | exports.exp[exports.num++] = exp; |
Dave Airlie | e265917 | 2017-04-25 23:33:29 +0100 | [diff] [blame] | 2333 | } |
| 2334 | } |
| 2335 | bb = LLVMGetNextBasicBlock(bb); |
| 2336 | } |
| 2337 | |
| 2338 | /* Remove holes in export memory due to removed PARAM exports. |
| 2339 | * This is done by renumbering all PARAM exports. |
| 2340 | */ |
| 2341 | if (removed_any) { |
Marek Olšák | 34bc470 | 2017-05-08 16:37:26 +0200 | [diff] [blame] | 2342 | uint8_t old_offset[VARYING_SLOT_MAX]; |
Dave Airlie | e265917 | 2017-04-25 23:33:29 +0100 | [diff] [blame] | 2343 | unsigned out, i; |
| 2344 | |
| 2345 | /* Make a copy of the offsets. We need the old version while |
| 2346 | * we are modifying some of them. */ |
Marek Olšák | 34bc470 | 2017-05-08 16:37:26 +0200 | [diff] [blame] | 2347 | memcpy(old_offset, vs_output_param_offset, |
| 2348 | sizeof(old_offset)); |
Dave Airlie | e265917 | 2017-04-25 23:33:29 +0100 | [diff] [blame] | 2349 | |
| 2350 | for (i = 0; i < exports.num; i++) { |
Marek Olšák | faa3747 | 2017-04-29 23:47:08 +0200 | [diff] [blame] | 2351 | unsigned offset = exports.exp[i].offset; |
Dave Airlie | e265917 | 2017-04-25 23:33:29 +0100 | [diff] [blame] | 2352 | |
Marek Olšák | 34bc470 | 2017-05-08 16:37:26 +0200 | [diff] [blame] | 2353 | /* Update vs_output_param_offset. Multiple outputs can |
| 2354 | * have the same offset. |
| 2355 | */ |
Dave Airlie | e265917 | 2017-04-25 23:33:29 +0100 | [diff] [blame] | 2356 | for (out = 0; out < num_outputs; out++) { |
Marek Olšák | 34bc470 | 2017-05-08 16:37:26 +0200 | [diff] [blame] | 2357 | if (old_offset[out] == offset) |
| 2358 | vs_output_param_offset[out] = i; |
Dave Airlie | e265917 | 2017-04-25 23:33:29 +0100 | [diff] [blame] | 2359 | } |
Marek Olšák | 34bc470 | 2017-05-08 16:37:26 +0200 | [diff] [blame] | 2360 | |
| 2361 | /* Change the PARAM offset in the instruction. */ |
| 2362 | LLVMSetOperand(exports.exp[i].inst, AC_EXP_TARGET, |
| 2363 | LLVMConstInt(ctx->i32, |
| 2364 | V_008DFC_SQ_EXP_PARAM + i, 0)); |
Dave Airlie | e265917 | 2017-04-25 23:33:29 +0100 | [diff] [blame] | 2365 | } |
Marek Olšák | 34bc470 | 2017-05-08 16:37:26 +0200 | [diff] [blame] | 2366 | *num_param_exports = exports.num; |
Dave Airlie | e265917 | 2017-04-25 23:33:29 +0100 | [diff] [blame] | 2367 | } |
| 2368 | } |
Dave Airlie | 1dda214 | 2017-10-19 05:29:02 +0100 | [diff] [blame] | 2369 | |
| 2370 | void ac_init_exec_full_mask(struct ac_llvm_context *ctx) |
| 2371 | { |
| 2372 | LLVMValueRef full_mask = LLVMConstInt(ctx->i64, ~0ull, 0); |
| 2373 | ac_build_intrinsic(ctx, |
| 2374 | "llvm.amdgcn.init.exec", ctx->voidt, |
| 2375 | &full_mask, 1, AC_FUNC_ATTR_CONVERGENT); |
| 2376 | } |
Dave Airlie | f925f5b | 2017-10-26 14:43:51 +1000 | [diff] [blame] | 2377 | |
| 2378 | void ac_declare_lds_as_pointer(struct ac_llvm_context *ctx) |
| 2379 | { |
| 2380 | unsigned lds_size = ctx->chip_class >= CIK ? 65536 : 32768; |
| 2381 | ctx->lds = LLVMBuildIntToPtr(ctx->builder, ctx->i32_0, |
| 2382 | LLVMPointerType(LLVMArrayType(ctx->i32, lds_size / 4), AC_LOCAL_ADDR_SPACE), |
| 2383 | "lds"); |
| 2384 | } |
| 2385 | |
| 2386 | LLVMValueRef ac_lds_load(struct ac_llvm_context *ctx, |
| 2387 | LLVMValueRef dw_addr) |
| 2388 | { |
| 2389 | return ac_build_load(ctx, ctx->lds, dw_addr); |
| 2390 | } |
| 2391 | |
| 2392 | void ac_lds_store(struct ac_llvm_context *ctx, |
| 2393 | LLVMValueRef dw_addr, |
| 2394 | LLVMValueRef value) |
| 2395 | { |
| 2396 | value = ac_to_integer(ctx, value); |
| 2397 | ac_build_indexed_store(ctx, ctx->lds, |
| 2398 | dw_addr, value); |
| 2399 | } |
Dave Airlie | 82d47b9 | 2017-10-26 15:28:41 +1000 | [diff] [blame] | 2400 | |
| 2401 | LLVMValueRef ac_find_lsb(struct ac_llvm_context *ctx, |
| 2402 | LLVMTypeRef dst_type, |
| 2403 | LLVMValueRef src0) |
| 2404 | { |
Timothy Arceri | 12a2350 | 2018-02-06 14:38:57 +1100 | [diff] [blame] | 2405 | unsigned src0_bitsize = ac_get_elem_bits(ctx, LLVMTypeOf(src0)); |
| 2406 | const char *intrin_name; |
| 2407 | LLVMTypeRef type; |
| 2408 | LLVMValueRef zero; |
| 2409 | if (src0_bitsize == 64) { |
| 2410 | intrin_name = "llvm.cttz.i64"; |
| 2411 | type = ctx->i64; |
| 2412 | zero = ctx->i64_0; |
| 2413 | } else { |
| 2414 | intrin_name = "llvm.cttz.i32"; |
| 2415 | type = ctx->i32; |
| 2416 | zero = ctx->i32_0; |
| 2417 | } |
| 2418 | |
Dave Airlie | 82d47b9 | 2017-10-26 15:28:41 +1000 | [diff] [blame] | 2419 | LLVMValueRef params[2] = { |
| 2420 | src0, |
| 2421 | |
| 2422 | /* The value of 1 means that ffs(x=0) = undef, so LLVM won't |
| 2423 | * add special code to check for x=0. The reason is that |
| 2424 | * the LLVM behavior for x=0 is different from what we |
| 2425 | * need here. However, LLVM also assumes that ffs(x) is |
| 2426 | * in [0, 31], but GLSL expects that ffs(0) = -1, so |
| 2427 | * a conditional assignment to handle 0 is still required. |
| 2428 | * |
| 2429 | * The hardware already implements the correct behavior. |
| 2430 | */ |
| 2431 | LLVMConstInt(ctx->i1, 1, false), |
| 2432 | }; |
| 2433 | |
Timothy Arceri | 12a2350 | 2018-02-06 14:38:57 +1100 | [diff] [blame] | 2434 | LLVMValueRef lsb = ac_build_intrinsic(ctx, intrin_name, type, |
Dave Airlie | 82d47b9 | 2017-10-26 15:28:41 +1000 | [diff] [blame] | 2435 | params, 2, |
| 2436 | AC_FUNC_ATTR_READNONE); |
| 2437 | |
Timothy Arceri | 12a2350 | 2018-02-06 14:38:57 +1100 | [diff] [blame] | 2438 | if (src0_bitsize == 64) { |
| 2439 | lsb = LLVMBuildTrunc(ctx->builder, lsb, ctx->i32, ""); |
| 2440 | } |
| 2441 | |
Dave Airlie | 82d47b9 | 2017-10-26 15:28:41 +1000 | [diff] [blame] | 2442 | /* TODO: We need an intrinsic to skip this conditional. */ |
| 2443 | /* Check for zero: */ |
| 2444 | return LLVMBuildSelect(ctx->builder, LLVMBuildICmp(ctx->builder, |
| 2445 | LLVMIntEQ, src0, |
Timothy Arceri | 12a2350 | 2018-02-06 14:38:57 +1100 | [diff] [blame] | 2446 | zero, ""), |
Dave Airlie | 82d47b9 | 2017-10-26 15:28:41 +1000 | [diff] [blame] | 2447 | LLVMConstInt(ctx->i32, -1, 0), lsb, ""); |
| 2448 | } |
Marek Olšák | b633999 | 2017-12-31 23:35:59 +0100 | [diff] [blame] | 2449 | |
| 2450 | LLVMTypeRef ac_array_in_const_addr_space(LLVMTypeRef elem_type) |
| 2451 | { |
| 2452 | return LLVMPointerType(LLVMArrayType(elem_type, 0), |
| 2453 | AC_CONST_ADDR_SPACE); |
| 2454 | } |
Marek Olšák | 931ec80 | 2018-01-01 21:04:22 +0100 | [diff] [blame] | 2455 | |
| 2456 | LLVMTypeRef ac_array_in_const32_addr_space(LLVMTypeRef elem_type) |
| 2457 | { |
| 2458 | if (!HAVE_32BIT_POINTERS) |
| 2459 | return ac_array_in_const_addr_space(elem_type); |
| 2460 | |
| 2461 | return LLVMPointerType(LLVMArrayType(elem_type, 0), |
| 2462 | AC_CONST_32BIT_ADDR_SPACE); |
| 2463 | } |
Timothy Arceri | 42627da | 2018-03-07 10:53:34 +1100 | [diff] [blame] | 2464 | |
| 2465 | static struct ac_llvm_flow * |
| 2466 | get_current_flow(struct ac_llvm_context *ctx) |
| 2467 | { |
| 2468 | if (ctx->flow_depth > 0) |
| 2469 | return &ctx->flow[ctx->flow_depth - 1]; |
| 2470 | return NULL; |
| 2471 | } |
| 2472 | |
| 2473 | static struct ac_llvm_flow * |
| 2474 | get_innermost_loop(struct ac_llvm_context *ctx) |
| 2475 | { |
| 2476 | for (unsigned i = ctx->flow_depth; i > 0; --i) { |
| 2477 | if (ctx->flow[i - 1].loop_entry_block) |
| 2478 | return &ctx->flow[i - 1]; |
| 2479 | } |
| 2480 | return NULL; |
| 2481 | } |
| 2482 | |
| 2483 | static struct ac_llvm_flow * |
| 2484 | push_flow(struct ac_llvm_context *ctx) |
| 2485 | { |
| 2486 | struct ac_llvm_flow *flow; |
| 2487 | |
| 2488 | if (ctx->flow_depth >= ctx->flow_depth_max) { |
| 2489 | unsigned new_max = MAX2(ctx->flow_depth << 1, |
| 2490 | AC_LLVM_INITIAL_CF_DEPTH); |
| 2491 | |
| 2492 | ctx->flow = realloc(ctx->flow, new_max * sizeof(*ctx->flow)); |
| 2493 | ctx->flow_depth_max = new_max; |
| 2494 | } |
| 2495 | |
| 2496 | flow = &ctx->flow[ctx->flow_depth]; |
| 2497 | ctx->flow_depth++; |
| 2498 | |
| 2499 | flow->next_block = NULL; |
| 2500 | flow->loop_entry_block = NULL; |
| 2501 | return flow; |
| 2502 | } |
| 2503 | |
| 2504 | static void set_basicblock_name(LLVMBasicBlockRef bb, const char *base, |
| 2505 | int label_id) |
| 2506 | { |
| 2507 | char buf[32]; |
| 2508 | snprintf(buf, sizeof(buf), "%s%d", base, label_id); |
| 2509 | LLVMSetValueName(LLVMBasicBlockAsValue(bb), buf); |
| 2510 | } |
| 2511 | |
| 2512 | /* Append a basic block at the level of the parent flow. |
| 2513 | */ |
| 2514 | static LLVMBasicBlockRef append_basic_block(struct ac_llvm_context *ctx, |
| 2515 | const char *name) |
| 2516 | { |
| 2517 | assert(ctx->flow_depth >= 1); |
| 2518 | |
| 2519 | if (ctx->flow_depth >= 2) { |
| 2520 | struct ac_llvm_flow *flow = &ctx->flow[ctx->flow_depth - 2]; |
| 2521 | |
| 2522 | return LLVMInsertBasicBlockInContext(ctx->context, |
| 2523 | flow->next_block, name); |
| 2524 | } |
| 2525 | |
| 2526 | LLVMValueRef main_fn = |
| 2527 | LLVMGetBasicBlockParent(LLVMGetInsertBlock(ctx->builder)); |
| 2528 | return LLVMAppendBasicBlockInContext(ctx->context, main_fn, name); |
| 2529 | } |
| 2530 | |
| 2531 | /* Emit a branch to the given default target for the current block if |
| 2532 | * applicable -- that is, if the current block does not already contain a |
| 2533 | * branch from a break or continue. |
| 2534 | */ |
| 2535 | static void emit_default_branch(LLVMBuilderRef builder, |
| 2536 | LLVMBasicBlockRef target) |
| 2537 | { |
| 2538 | if (!LLVMGetBasicBlockTerminator(LLVMGetInsertBlock(builder))) |
| 2539 | LLVMBuildBr(builder, target); |
| 2540 | } |
| 2541 | |
| 2542 | void ac_build_bgnloop(struct ac_llvm_context *ctx, int label_id) |
| 2543 | { |
| 2544 | struct ac_llvm_flow *flow = push_flow(ctx); |
| 2545 | flow->loop_entry_block = append_basic_block(ctx, "LOOP"); |
| 2546 | flow->next_block = append_basic_block(ctx, "ENDLOOP"); |
| 2547 | set_basicblock_name(flow->loop_entry_block, "loop", label_id); |
| 2548 | LLVMBuildBr(ctx->builder, flow->loop_entry_block); |
| 2549 | LLVMPositionBuilderAtEnd(ctx->builder, flow->loop_entry_block); |
| 2550 | } |
| 2551 | |
| 2552 | void ac_build_break(struct ac_llvm_context *ctx) |
| 2553 | { |
| 2554 | struct ac_llvm_flow *flow = get_innermost_loop(ctx); |
| 2555 | LLVMBuildBr(ctx->builder, flow->next_block); |
| 2556 | } |
| 2557 | |
| 2558 | void ac_build_continue(struct ac_llvm_context *ctx) |
| 2559 | { |
| 2560 | struct ac_llvm_flow *flow = get_innermost_loop(ctx); |
| 2561 | LLVMBuildBr(ctx->builder, flow->loop_entry_block); |
| 2562 | } |
| 2563 | |
| 2564 | void ac_build_else(struct ac_llvm_context *ctx, int label_id) |
| 2565 | { |
| 2566 | struct ac_llvm_flow *current_branch = get_current_flow(ctx); |
| 2567 | LLVMBasicBlockRef endif_block; |
| 2568 | |
| 2569 | assert(!current_branch->loop_entry_block); |
| 2570 | |
| 2571 | endif_block = append_basic_block(ctx, "ENDIF"); |
| 2572 | emit_default_branch(ctx->builder, endif_block); |
| 2573 | |
| 2574 | LLVMPositionBuilderAtEnd(ctx->builder, current_branch->next_block); |
| 2575 | set_basicblock_name(current_branch->next_block, "else", label_id); |
| 2576 | |
| 2577 | current_branch->next_block = endif_block; |
| 2578 | } |
| 2579 | |
| 2580 | void ac_build_endif(struct ac_llvm_context *ctx, int label_id) |
| 2581 | { |
| 2582 | struct ac_llvm_flow *current_branch = get_current_flow(ctx); |
| 2583 | |
| 2584 | assert(!current_branch->loop_entry_block); |
| 2585 | |
| 2586 | emit_default_branch(ctx->builder, current_branch->next_block); |
| 2587 | LLVMPositionBuilderAtEnd(ctx->builder, current_branch->next_block); |
| 2588 | set_basicblock_name(current_branch->next_block, "endif", label_id); |
| 2589 | |
| 2590 | ctx->flow_depth--; |
| 2591 | } |
| 2592 | |
| 2593 | void ac_build_endloop(struct ac_llvm_context *ctx, int label_id) |
| 2594 | { |
| 2595 | struct ac_llvm_flow *current_loop = get_current_flow(ctx); |
| 2596 | |
| 2597 | assert(current_loop->loop_entry_block); |
| 2598 | |
| 2599 | emit_default_branch(ctx->builder, current_loop->loop_entry_block); |
| 2600 | |
| 2601 | LLVMPositionBuilderAtEnd(ctx->builder, current_loop->next_block); |
| 2602 | set_basicblock_name(current_loop->next_block, "endloop", label_id); |
| 2603 | ctx->flow_depth--; |
| 2604 | } |
| 2605 | |
| 2606 | static void if_cond_emit(struct ac_llvm_context *ctx, LLVMValueRef cond, |
| 2607 | int label_id) |
| 2608 | { |
| 2609 | struct ac_llvm_flow *flow = push_flow(ctx); |
| 2610 | LLVMBasicBlockRef if_block; |
| 2611 | |
| 2612 | if_block = append_basic_block(ctx, "IF"); |
| 2613 | flow->next_block = append_basic_block(ctx, "ELSE"); |
| 2614 | set_basicblock_name(if_block, "if", label_id); |
| 2615 | LLVMBuildCondBr(ctx->builder, cond, if_block, flow->next_block); |
| 2616 | LLVMPositionBuilderAtEnd(ctx->builder, if_block); |
| 2617 | } |
| 2618 | |
| 2619 | void ac_build_if(struct ac_llvm_context *ctx, LLVMValueRef value, |
| 2620 | int label_id) |
| 2621 | { |
| 2622 | LLVMValueRef cond = LLVMBuildFCmp(ctx->builder, LLVMRealUNE, |
| 2623 | value, ctx->f32_0, ""); |
| 2624 | if_cond_emit(ctx, cond, label_id); |
| 2625 | } |
| 2626 | |
| 2627 | void ac_build_uif(struct ac_llvm_context *ctx, LLVMValueRef value, |
| 2628 | int label_id) |
| 2629 | { |
| 2630 | LLVMValueRef cond = LLVMBuildICmp(ctx->builder, LLVMIntNE, |
| 2631 | ac_to_integer(ctx, value), |
| 2632 | ctx->i32_0, ""); |
| 2633 | if_cond_emit(ctx, cond, label_id); |
| 2634 | } |
Samuel Pitoiset | bf63682 | 2018-03-09 16:22:44 +0100 | [diff] [blame] | 2635 | |
| 2636 | LLVMValueRef ac_build_alloca(struct ac_llvm_context *ac, LLVMTypeRef type, |
| 2637 | const char *name) |
| 2638 | { |
| 2639 | LLVMBuilderRef builder = ac->builder; |
| 2640 | LLVMBasicBlockRef current_block = LLVMGetInsertBlock(builder); |
| 2641 | LLVMValueRef function = LLVMGetBasicBlockParent(current_block); |
| 2642 | LLVMBasicBlockRef first_block = LLVMGetEntryBasicBlock(function); |
| 2643 | LLVMValueRef first_instr = LLVMGetFirstInstruction(first_block); |
| 2644 | LLVMBuilderRef first_builder = LLVMCreateBuilderInContext(ac->context); |
| 2645 | LLVMValueRef res; |
| 2646 | |
| 2647 | if (first_instr) { |
| 2648 | LLVMPositionBuilderBefore(first_builder, first_instr); |
| 2649 | } else { |
| 2650 | LLVMPositionBuilderAtEnd(first_builder, first_block); |
| 2651 | } |
| 2652 | |
| 2653 | res = LLVMBuildAlloca(first_builder, type, name); |
| 2654 | LLVMBuildStore(builder, LLVMConstNull(type), res); |
| 2655 | |
| 2656 | LLVMDisposeBuilder(first_builder); |
| 2657 | |
| 2658 | return res; |
| 2659 | } |
| 2660 | |
| 2661 | LLVMValueRef ac_build_alloca_undef(struct ac_llvm_context *ac, |
| 2662 | LLVMTypeRef type, const char *name) |
| 2663 | { |
| 2664 | LLVMValueRef ptr = ac_build_alloca(ac, type, name); |
| 2665 | LLVMBuildStore(ac->builder, LLVMGetUndef(type), ptr); |
| 2666 | return ptr; |
| 2667 | } |
Samuel Pitoiset | 895632b | 2018-03-09 16:26:34 +0100 | [diff] [blame] | 2668 | |
| 2669 | LLVMValueRef ac_cast_ptr(struct ac_llvm_context *ctx, LLVMValueRef ptr, |
| 2670 | LLVMTypeRef type) |
| 2671 | { |
| 2672 | int addr_space = LLVMGetPointerAddressSpace(LLVMTypeOf(ptr)); |
| 2673 | return LLVMBuildBitCast(ctx->builder, ptr, |
| 2674 | LLVMPointerType(type, addr_space), ""); |
| 2675 | } |
Samuel Pitoiset | 28bb687 | 2018-03-09 16:36:31 +0100 | [diff] [blame] | 2676 | |
| 2677 | LLVMValueRef ac_trim_vector(struct ac_llvm_context *ctx, LLVMValueRef value, |
| 2678 | unsigned count) |
| 2679 | { |
| 2680 | unsigned num_components = ac_get_llvm_num_components(value); |
| 2681 | if (count == num_components) |
| 2682 | return value; |
| 2683 | |
| 2684 | LLVMValueRef masks[] = { |
| 2685 | LLVMConstInt(ctx->i32, 0, false), LLVMConstInt(ctx->i32, 1, false), |
| 2686 | LLVMConstInt(ctx->i32, 2, false), LLVMConstInt(ctx->i32, 3, false)}; |
| 2687 | |
| 2688 | if (count == 1) |
| 2689 | return LLVMBuildExtractElement(ctx->builder, value, masks[0], |
| 2690 | ""); |
| 2691 | |
| 2692 | LLVMValueRef swizzle = LLVMConstVector(masks, count); |
| 2693 | return LLVMBuildShuffleVector(ctx->builder, value, value, swizzle, ""); |
| 2694 | } |
Samuel Pitoiset | 61a91ca | 2018-03-09 16:39:35 +0100 | [diff] [blame] | 2695 | |
| 2696 | LLVMValueRef ac_unpack_param(struct ac_llvm_context *ctx, LLVMValueRef param, |
| 2697 | unsigned rshift, unsigned bitwidth) |
| 2698 | { |
| 2699 | LLVMValueRef value = param; |
| 2700 | if (rshift) |
| 2701 | value = LLVMBuildLShr(ctx->builder, value, |
| 2702 | LLVMConstInt(ctx->i32, rshift, false), ""); |
| 2703 | |
| 2704 | if (rshift + bitwidth < 32) { |
| 2705 | unsigned mask = (1 << bitwidth) - 1; |
| 2706 | value = LLVMBuildAnd(ctx->builder, value, |
| 2707 | LLVMConstInt(ctx->i32, mask, false), ""); |
| 2708 | } |
| 2709 | return value; |
| 2710 | } |
Marek Olšák | dc04e4b | 2018-03-20 19:14:57 -0400 | [diff] [blame] | 2711 | |
| 2712 | /* Adjust the sample index according to FMASK. |
| 2713 | * |
| 2714 | * For uncompressed MSAA surfaces, FMASK should return 0x76543210, |
| 2715 | * which is the identity mapping. Each nibble says which physical sample |
| 2716 | * should be fetched to get that sample. |
| 2717 | * |
| 2718 | * For example, 0x11111100 means there are only 2 samples stored and |
| 2719 | * the second sample covers 3/4 of the pixel. When reading samples 0 |
| 2720 | * and 1, return physical sample 0 (determined by the first two 0s |
| 2721 | * in FMASK), otherwise return physical sample 1. |
| 2722 | * |
| 2723 | * The sample index should be adjusted as follows: |
| 2724 | * addr[sample_index] = (fmask >> (addr[sample_index] * 4)) & 0xF; |
| 2725 | */ |
| 2726 | void ac_apply_fmask_to_sample(struct ac_llvm_context *ac, LLVMValueRef fmask, |
| 2727 | LLVMValueRef *addr, bool is_array_tex) |
| 2728 | { |
| 2729 | struct ac_image_args fmask_load = {}; |
| 2730 | fmask_load.opcode = ac_image_load; |
| 2731 | fmask_load.resource = fmask; |
| 2732 | fmask_load.dmask = 0xf; |
Nicolai Hähnle | f931583 | 2018-02-16 14:21:56 +0100 | [diff] [blame] | 2733 | fmask_load.dim = is_array_tex ? ac_image_2darray : ac_image_2d; |
Marek Olšák | dc04e4b | 2018-03-20 19:14:57 -0400 | [diff] [blame] | 2734 | |
Nicolai Hähnle | 625dcbb | 2018-03-23 11:20:24 +0100 | [diff] [blame] | 2735 | fmask_load.coords[0] = addr[0]; |
| 2736 | fmask_load.coords[1] = addr[1]; |
| 2737 | if (is_array_tex) |
| 2738 | fmask_load.coords[2] = addr[2]; |
Marek Olšák | dc04e4b | 2018-03-20 19:14:57 -0400 | [diff] [blame] | 2739 | |
| 2740 | LLVMValueRef fmask_value = ac_build_image_opcode(ac, &fmask_load); |
| 2741 | fmask_value = LLVMBuildExtractElement(ac->builder, fmask_value, |
| 2742 | ac->i32_0, ""); |
| 2743 | |
| 2744 | /* Apply the formula. */ |
| 2745 | unsigned sample_chan = is_array_tex ? 3 : 2; |
| 2746 | LLVMValueRef final_sample; |
| 2747 | final_sample = LLVMBuildMul(ac->builder, addr[sample_chan], |
| 2748 | LLVMConstInt(ac->i32, 4, 0), ""); |
| 2749 | final_sample = LLVMBuildLShr(ac->builder, fmask_value, final_sample, ""); |
Marek Olšák | e5e57c3 | 2018-05-17 23:23:24 -0400 | [diff] [blame] | 2750 | /* Mask the sample index by 0x7, because 0x8 means an unknown value |
| 2751 | * with EQAA, so those will map to 0. */ |
Marek Olšák | dc04e4b | 2018-03-20 19:14:57 -0400 | [diff] [blame] | 2752 | final_sample = LLVMBuildAnd(ac->builder, final_sample, |
Marek Olšák | e5e57c3 | 2018-05-17 23:23:24 -0400 | [diff] [blame] | 2753 | LLVMConstInt(ac->i32, 0x7, 0), ""); |
Marek Olšák | dc04e4b | 2018-03-20 19:14:57 -0400 | [diff] [blame] | 2754 | |
| 2755 | /* Don't rewrite the sample index if WORD1.DATA_FORMAT of the FMASK |
Marek Olšák | e5e57c3 | 2018-05-17 23:23:24 -0400 | [diff] [blame] | 2756 | * resource descriptor is 0 (invalid). |
Marek Olšák | dc04e4b | 2018-03-20 19:14:57 -0400 | [diff] [blame] | 2757 | */ |
| 2758 | LLVMValueRef tmp; |
| 2759 | tmp = LLVMBuildBitCast(ac->builder, fmask, ac->v8i32, ""); |
| 2760 | tmp = LLVMBuildExtractElement(ac->builder, tmp, ac->i32_1, ""); |
| 2761 | tmp = LLVMBuildICmp(ac->builder, LLVMIntNE, tmp, ac->i32_0, ""); |
| 2762 | |
| 2763 | /* Replace the MSAA sample index. */ |
| 2764 | addr[sample_chan] = LLVMBuildSelect(ac->builder, tmp, final_sample, |
| 2765 | addr[sample_chan], ""); |
| 2766 | } |
Daniel Schürmann | d5f7ebd | 2018-03-06 15:03:36 +0100 | [diff] [blame] | 2767 | |
| 2768 | static LLVMValueRef |
| 2769 | _ac_build_readlane(struct ac_llvm_context *ctx, LLVMValueRef src, LLVMValueRef lane) |
| 2770 | { |
| 2771 | ac_build_optimization_barrier(ctx, &src); |
| 2772 | return ac_build_intrinsic(ctx, |
| 2773 | lane == NULL ? "llvm.amdgcn.readfirstlane" : "llvm.amdgcn.readlane", |
| 2774 | LLVMTypeOf(src), (LLVMValueRef []) { |
| 2775 | src, lane }, |
| 2776 | lane == NULL ? 1 : 2, |
| 2777 | AC_FUNC_ATTR_READNONE | |
| 2778 | AC_FUNC_ATTR_CONVERGENT); |
| 2779 | } |
| 2780 | |
| 2781 | /** |
| 2782 | * Builds the "llvm.amdgcn.readlane" or "llvm.amdgcn.readfirstlane" intrinsic. |
| 2783 | * @param ctx |
| 2784 | * @param src |
| 2785 | * @param lane - id of the lane or NULL for the first active lane |
| 2786 | * @return value of the lane |
| 2787 | */ |
| 2788 | LLVMValueRef |
| 2789 | ac_build_readlane(struct ac_llvm_context *ctx, LLVMValueRef src, LLVMValueRef lane) |
| 2790 | { |
| 2791 | LLVMTypeRef src_type = LLVMTypeOf(src); |
| 2792 | src = ac_to_integer(ctx, src); |
| 2793 | unsigned bits = LLVMGetIntTypeWidth(LLVMTypeOf(src)); |
| 2794 | LLVMValueRef ret; |
| 2795 | |
| 2796 | if (bits == 32) { |
| 2797 | ret = _ac_build_readlane(ctx, src, lane); |
| 2798 | } else { |
| 2799 | assert(bits % 32 == 0); |
| 2800 | LLVMTypeRef vec_type = LLVMVectorType(ctx->i32, bits / 32); |
| 2801 | LLVMValueRef src_vector = |
| 2802 | LLVMBuildBitCast(ctx->builder, src, vec_type, ""); |
| 2803 | ret = LLVMGetUndef(vec_type); |
| 2804 | for (unsigned i = 0; i < bits / 32; i++) { |
| 2805 | src = LLVMBuildExtractElement(ctx->builder, src_vector, |
| 2806 | LLVMConstInt(ctx->i32, i, 0), ""); |
| 2807 | LLVMValueRef ret_comp = _ac_build_readlane(ctx, src, lane); |
| 2808 | ret = LLVMBuildInsertElement(ctx->builder, ret, ret_comp, |
| 2809 | LLVMConstInt(ctx->i32, i, 0), ""); |
| 2810 | } |
| 2811 | } |
| 2812 | return LLVMBuildBitCast(ctx->builder, ret, src_type, ""); |
| 2813 | } |
| 2814 | |
| 2815 | LLVMValueRef |
| 2816 | ac_build_writelane(struct ac_llvm_context *ctx, LLVMValueRef src, LLVMValueRef value, LLVMValueRef lane) |
| 2817 | { |
| 2818 | /* TODO: Use the actual instruction when LLVM adds an intrinsic for it. |
| 2819 | */ |
| 2820 | LLVMValueRef pred = LLVMBuildICmp(ctx->builder, LLVMIntEQ, lane, |
| 2821 | ac_get_thread_id(ctx), ""); |
| 2822 | return LLVMBuildSelect(ctx->builder, pred, value, src, ""); |
| 2823 | } |
| 2824 | |
| 2825 | LLVMValueRef |
| 2826 | ac_build_mbcnt(struct ac_llvm_context *ctx, LLVMValueRef mask) |
| 2827 | { |
| 2828 | LLVMValueRef mask_vec = LLVMBuildBitCast(ctx->builder, mask, |
| 2829 | LLVMVectorType(ctx->i32, 2), |
| 2830 | ""); |
| 2831 | LLVMValueRef mask_lo = LLVMBuildExtractElement(ctx->builder, mask_vec, |
| 2832 | ctx->i32_0, ""); |
| 2833 | LLVMValueRef mask_hi = LLVMBuildExtractElement(ctx->builder, mask_vec, |
| 2834 | ctx->i32_1, ""); |
| 2835 | LLVMValueRef val = |
| 2836 | ac_build_intrinsic(ctx, "llvm.amdgcn.mbcnt.lo", ctx->i32, |
| 2837 | (LLVMValueRef []) { mask_lo, ctx->i32_0 }, |
| 2838 | 2, AC_FUNC_ATTR_READNONE); |
| 2839 | val = ac_build_intrinsic(ctx, "llvm.amdgcn.mbcnt.hi", ctx->i32, |
| 2840 | (LLVMValueRef []) { mask_hi, val }, |
| 2841 | 2, AC_FUNC_ATTR_READNONE); |
| 2842 | return val; |
| 2843 | } |
| 2844 | |
| 2845 | enum dpp_ctrl { |
| 2846 | _dpp_quad_perm = 0x000, |
| 2847 | _dpp_row_sl = 0x100, |
| 2848 | _dpp_row_sr = 0x110, |
| 2849 | _dpp_row_rr = 0x120, |
| 2850 | dpp_wf_sl1 = 0x130, |
| 2851 | dpp_wf_rl1 = 0x134, |
| 2852 | dpp_wf_sr1 = 0x138, |
| 2853 | dpp_wf_rr1 = 0x13C, |
| 2854 | dpp_row_mirror = 0x140, |
| 2855 | dpp_row_half_mirror = 0x141, |
| 2856 | dpp_row_bcast15 = 0x142, |
| 2857 | dpp_row_bcast31 = 0x143 |
| 2858 | }; |
| 2859 | |
| 2860 | static inline enum dpp_ctrl |
| 2861 | dpp_quad_perm(unsigned lane0, unsigned lane1, unsigned lane2, unsigned lane3) |
| 2862 | { |
| 2863 | assert(lane0 < 4 && lane1 < 4 && lane2 < 4 && lane3 < 4); |
| 2864 | return _dpp_quad_perm | lane0 | (lane1 << 2) | (lane2 << 4) | (lane3 << 6); |
| 2865 | } |
| 2866 | |
| 2867 | static inline enum dpp_ctrl |
| 2868 | dpp_row_sl(unsigned amount) |
| 2869 | { |
| 2870 | assert(amount > 0 && amount < 16); |
| 2871 | return _dpp_row_sl | amount; |
| 2872 | } |
| 2873 | |
| 2874 | static inline enum dpp_ctrl |
| 2875 | dpp_row_sr(unsigned amount) |
| 2876 | { |
| 2877 | assert(amount > 0 && amount < 16); |
| 2878 | return _dpp_row_sr | amount; |
| 2879 | } |
| 2880 | |
| 2881 | static LLVMValueRef |
| 2882 | _ac_build_dpp(struct ac_llvm_context *ctx, LLVMValueRef old, LLVMValueRef src, |
| 2883 | enum dpp_ctrl dpp_ctrl, unsigned row_mask, unsigned bank_mask, |
| 2884 | bool bound_ctrl) |
| 2885 | { |
| 2886 | return ac_build_intrinsic(ctx, "llvm.amdgcn.update.dpp.i32", |
| 2887 | LLVMTypeOf(old), |
| 2888 | (LLVMValueRef[]) { |
| 2889 | old, src, |
| 2890 | LLVMConstInt(ctx->i32, dpp_ctrl, 0), |
| 2891 | LLVMConstInt(ctx->i32, row_mask, 0), |
| 2892 | LLVMConstInt(ctx->i32, bank_mask, 0), |
| 2893 | LLVMConstInt(ctx->i1, bound_ctrl, 0) }, |
| 2894 | 6, AC_FUNC_ATTR_READNONE | AC_FUNC_ATTR_CONVERGENT); |
| 2895 | } |
| 2896 | |
| 2897 | static LLVMValueRef |
| 2898 | ac_build_dpp(struct ac_llvm_context *ctx, LLVMValueRef old, LLVMValueRef src, |
| 2899 | enum dpp_ctrl dpp_ctrl, unsigned row_mask, unsigned bank_mask, |
| 2900 | bool bound_ctrl) |
| 2901 | { |
| 2902 | LLVMTypeRef src_type = LLVMTypeOf(src); |
| 2903 | src = ac_to_integer(ctx, src); |
| 2904 | old = ac_to_integer(ctx, old); |
| 2905 | unsigned bits = LLVMGetIntTypeWidth(LLVMTypeOf(src)); |
| 2906 | LLVMValueRef ret; |
| 2907 | if (bits == 32) { |
| 2908 | ret = _ac_build_dpp(ctx, old, src, dpp_ctrl, row_mask, |
| 2909 | bank_mask, bound_ctrl); |
| 2910 | } else { |
| 2911 | assert(bits % 32 == 0); |
| 2912 | LLVMTypeRef vec_type = LLVMVectorType(ctx->i32, bits / 32); |
| 2913 | LLVMValueRef src_vector = |
| 2914 | LLVMBuildBitCast(ctx->builder, src, vec_type, ""); |
| 2915 | LLVMValueRef old_vector = |
| 2916 | LLVMBuildBitCast(ctx->builder, old, vec_type, ""); |
| 2917 | ret = LLVMGetUndef(vec_type); |
| 2918 | for (unsigned i = 0; i < bits / 32; i++) { |
| 2919 | src = LLVMBuildExtractElement(ctx->builder, src_vector, |
| 2920 | LLVMConstInt(ctx->i32, i, |
| 2921 | 0), ""); |
| 2922 | old = LLVMBuildExtractElement(ctx->builder, old_vector, |
| 2923 | LLVMConstInt(ctx->i32, i, |
| 2924 | 0), ""); |
| 2925 | LLVMValueRef ret_comp = _ac_build_dpp(ctx, old, src, |
| 2926 | dpp_ctrl, |
| 2927 | row_mask, |
| 2928 | bank_mask, |
| 2929 | bound_ctrl); |
| 2930 | ret = LLVMBuildInsertElement(ctx->builder, ret, |
| 2931 | ret_comp, |
| 2932 | LLVMConstInt(ctx->i32, i, |
| 2933 | 0), ""); |
| 2934 | } |
| 2935 | } |
| 2936 | return LLVMBuildBitCast(ctx->builder, ret, src_type, ""); |
| 2937 | } |
| 2938 | |
| 2939 | static inline unsigned |
| 2940 | ds_pattern_bitmode(unsigned and_mask, unsigned or_mask, unsigned xor_mask) |
| 2941 | { |
| 2942 | assert(and_mask < 32 && or_mask < 32 && xor_mask < 32); |
| 2943 | return and_mask | (or_mask << 5) | (xor_mask << 10); |
| 2944 | } |
| 2945 | |
| 2946 | static LLVMValueRef |
| 2947 | _ac_build_ds_swizzle(struct ac_llvm_context *ctx, LLVMValueRef src, unsigned mask) |
| 2948 | { |
| 2949 | return ac_build_intrinsic(ctx, "llvm.amdgcn.ds.swizzle", |
| 2950 | LLVMTypeOf(src), (LLVMValueRef []) { |
| 2951 | src, LLVMConstInt(ctx->i32, mask, 0) }, |
| 2952 | 2, AC_FUNC_ATTR_READNONE | AC_FUNC_ATTR_CONVERGENT); |
| 2953 | } |
| 2954 | |
| 2955 | LLVMValueRef |
| 2956 | ac_build_ds_swizzle(struct ac_llvm_context *ctx, LLVMValueRef src, unsigned mask) |
| 2957 | { |
| 2958 | LLVMTypeRef src_type = LLVMTypeOf(src); |
| 2959 | src = ac_to_integer(ctx, src); |
| 2960 | unsigned bits = LLVMGetIntTypeWidth(LLVMTypeOf(src)); |
| 2961 | LLVMValueRef ret; |
| 2962 | if (bits == 32) { |
| 2963 | ret = _ac_build_ds_swizzle(ctx, src, mask); |
| 2964 | } else { |
| 2965 | assert(bits % 32 == 0); |
| 2966 | LLVMTypeRef vec_type = LLVMVectorType(ctx->i32, bits / 32); |
| 2967 | LLVMValueRef src_vector = |
| 2968 | LLVMBuildBitCast(ctx->builder, src, vec_type, ""); |
| 2969 | ret = LLVMGetUndef(vec_type); |
| 2970 | for (unsigned i = 0; i < bits / 32; i++) { |
| 2971 | src = LLVMBuildExtractElement(ctx->builder, src_vector, |
| 2972 | LLVMConstInt(ctx->i32, i, |
| 2973 | 0), ""); |
| 2974 | LLVMValueRef ret_comp = _ac_build_ds_swizzle(ctx, src, |
| 2975 | mask); |
| 2976 | ret = LLVMBuildInsertElement(ctx->builder, ret, |
| 2977 | ret_comp, |
| 2978 | LLVMConstInt(ctx->i32, i, |
| 2979 | 0), ""); |
| 2980 | } |
| 2981 | } |
| 2982 | return LLVMBuildBitCast(ctx->builder, ret, src_type, ""); |
| 2983 | } |
| 2984 | |
| 2985 | static LLVMValueRef |
| 2986 | ac_build_wwm(struct ac_llvm_context *ctx, LLVMValueRef src) |
| 2987 | { |
| 2988 | char name[32], type[8]; |
| 2989 | ac_build_type_name_for_intr(LLVMTypeOf(src), type, sizeof(type)); |
| 2990 | snprintf(name, sizeof(name), "llvm.amdgcn.wwm.%s", type); |
| 2991 | return ac_build_intrinsic(ctx, name, LLVMTypeOf(src), |
| 2992 | (LLVMValueRef []) { src }, 1, |
| 2993 | AC_FUNC_ATTR_READNONE); |
| 2994 | } |
| 2995 | |
| 2996 | static LLVMValueRef |
| 2997 | ac_build_set_inactive(struct ac_llvm_context *ctx, LLVMValueRef src, |
| 2998 | LLVMValueRef inactive) |
| 2999 | { |
Timothy Arceri | fae3b38 | 2018-06-07 10:30:01 +1000 | [diff] [blame] | 3000 | char name[33], type[8]; |
Daniel Schürmann | d5f7ebd | 2018-03-06 15:03:36 +0100 | [diff] [blame] | 3001 | LLVMTypeRef src_type = LLVMTypeOf(src); |
| 3002 | src = ac_to_integer(ctx, src); |
| 3003 | inactive = ac_to_integer(ctx, inactive); |
| 3004 | ac_build_type_name_for_intr(LLVMTypeOf(src), type, sizeof(type)); |
| 3005 | snprintf(name, sizeof(name), "llvm.amdgcn.set.inactive.%s", type); |
| 3006 | LLVMValueRef ret = |
| 3007 | ac_build_intrinsic(ctx, name, |
| 3008 | LLVMTypeOf(src), (LLVMValueRef []) { |
| 3009 | src, inactive }, 2, |
| 3010 | AC_FUNC_ATTR_READNONE | |
| 3011 | AC_FUNC_ATTR_CONVERGENT); |
| 3012 | return LLVMBuildBitCast(ctx->builder, ret, src_type, ""); |
| 3013 | } |
| 3014 | |
| 3015 | static LLVMValueRef |
| 3016 | get_reduction_identity(struct ac_llvm_context *ctx, nir_op op, unsigned type_size) |
| 3017 | { |
| 3018 | if (type_size == 4) { |
| 3019 | switch (op) { |
| 3020 | case nir_op_iadd: return ctx->i32_0; |
| 3021 | case nir_op_fadd: return ctx->f32_0; |
| 3022 | case nir_op_imul: return ctx->i32_1; |
| 3023 | case nir_op_fmul: return ctx->f32_1; |
| 3024 | case nir_op_imin: return LLVMConstInt(ctx->i32, INT32_MAX, 0); |
| 3025 | case nir_op_umin: return LLVMConstInt(ctx->i32, UINT32_MAX, 0); |
| 3026 | case nir_op_fmin: return LLVMConstReal(ctx->f32, INFINITY); |
| 3027 | case nir_op_imax: return LLVMConstInt(ctx->i32, INT32_MIN, 0); |
| 3028 | case nir_op_umax: return ctx->i32_0; |
| 3029 | case nir_op_fmax: return LLVMConstReal(ctx->f32, -INFINITY); |
| 3030 | case nir_op_iand: return LLVMConstInt(ctx->i32, -1, 0); |
| 3031 | case nir_op_ior: return ctx->i32_0; |
| 3032 | case nir_op_ixor: return ctx->i32_0; |
| 3033 | default: |
| 3034 | unreachable("bad reduction intrinsic"); |
| 3035 | } |
| 3036 | } else { /* type_size == 64bit */ |
| 3037 | switch (op) { |
| 3038 | case nir_op_iadd: return ctx->i64_0; |
| 3039 | case nir_op_fadd: return ctx->f64_0; |
| 3040 | case nir_op_imul: return ctx->i64_1; |
| 3041 | case nir_op_fmul: return ctx->f64_1; |
| 3042 | case nir_op_imin: return LLVMConstInt(ctx->i64, INT64_MAX, 0); |
| 3043 | case nir_op_umin: return LLVMConstInt(ctx->i64, UINT64_MAX, 0); |
| 3044 | case nir_op_fmin: return LLVMConstReal(ctx->f64, INFINITY); |
| 3045 | case nir_op_imax: return LLVMConstInt(ctx->i64, INT64_MIN, 0); |
| 3046 | case nir_op_umax: return ctx->i64_0; |
| 3047 | case nir_op_fmax: return LLVMConstReal(ctx->f64, -INFINITY); |
| 3048 | case nir_op_iand: return LLVMConstInt(ctx->i64, -1, 0); |
| 3049 | case nir_op_ior: return ctx->i64_0; |
| 3050 | case nir_op_ixor: return ctx->i64_0; |
| 3051 | default: |
| 3052 | unreachable("bad reduction intrinsic"); |
| 3053 | } |
| 3054 | } |
| 3055 | } |
| 3056 | |
| 3057 | static LLVMValueRef |
| 3058 | ac_build_alu_op(struct ac_llvm_context *ctx, LLVMValueRef lhs, LLVMValueRef rhs, nir_op op) |
| 3059 | { |
| 3060 | bool _64bit = ac_get_type_size(LLVMTypeOf(lhs)) == 8; |
| 3061 | switch (op) { |
| 3062 | case nir_op_iadd: return LLVMBuildAdd(ctx->builder, lhs, rhs, ""); |
| 3063 | case nir_op_fadd: return LLVMBuildFAdd(ctx->builder, lhs, rhs, ""); |
| 3064 | case nir_op_imul: return LLVMBuildMul(ctx->builder, lhs, rhs, ""); |
| 3065 | case nir_op_fmul: return LLVMBuildFMul(ctx->builder, lhs, rhs, ""); |
| 3066 | case nir_op_imin: return LLVMBuildSelect(ctx->builder, |
| 3067 | LLVMBuildICmp(ctx->builder, LLVMIntSLT, lhs, rhs, ""), |
| 3068 | lhs, rhs, ""); |
| 3069 | case nir_op_umin: return LLVMBuildSelect(ctx->builder, |
| 3070 | LLVMBuildICmp(ctx->builder, LLVMIntULT, lhs, rhs, ""), |
| 3071 | lhs, rhs, ""); |
| 3072 | case nir_op_fmin: return ac_build_intrinsic(ctx, |
| 3073 | _64bit ? "llvm.minnum.f64" : "llvm.minnum.f32", |
| 3074 | _64bit ? ctx->f64 : ctx->f32, |
| 3075 | (LLVMValueRef[]){lhs, rhs}, 2, AC_FUNC_ATTR_READNONE); |
| 3076 | case nir_op_imax: return LLVMBuildSelect(ctx->builder, |
| 3077 | LLVMBuildICmp(ctx->builder, LLVMIntSGT, lhs, rhs, ""), |
| 3078 | lhs, rhs, ""); |
| 3079 | case nir_op_umax: return LLVMBuildSelect(ctx->builder, |
| 3080 | LLVMBuildICmp(ctx->builder, LLVMIntUGT, lhs, rhs, ""), |
| 3081 | lhs, rhs, ""); |
| 3082 | case nir_op_fmax: return ac_build_intrinsic(ctx, |
| 3083 | _64bit ? "llvm.maxnum.f64" : "llvm.maxnum.f32", |
| 3084 | _64bit ? ctx->f64 : ctx->f32, |
| 3085 | (LLVMValueRef[]){lhs, rhs}, 2, AC_FUNC_ATTR_READNONE); |
| 3086 | case nir_op_iand: return LLVMBuildAnd(ctx->builder, lhs, rhs, ""); |
| 3087 | case nir_op_ior: return LLVMBuildOr(ctx->builder, lhs, rhs, ""); |
| 3088 | case nir_op_ixor: return LLVMBuildXor(ctx->builder, lhs, rhs, ""); |
| 3089 | default: |
| 3090 | unreachable("bad reduction intrinsic"); |
| 3091 | } |
| 3092 | } |
| 3093 | |
| 3094 | /* TODO: add inclusive and excluse scan functions for SI chip class. */ |
| 3095 | static LLVMValueRef |
| 3096 | ac_build_scan(struct ac_llvm_context *ctx, nir_op op, LLVMValueRef src, LLVMValueRef identity) |
| 3097 | { |
| 3098 | LLVMValueRef result, tmp; |
| 3099 | result = src; |
| 3100 | tmp = ac_build_dpp(ctx, identity, src, dpp_row_sr(1), 0xf, 0xf, false); |
| 3101 | result = ac_build_alu_op(ctx, result, tmp, op); |
| 3102 | tmp = ac_build_dpp(ctx, identity, src, dpp_row_sr(2), 0xf, 0xf, false); |
| 3103 | result = ac_build_alu_op(ctx, result, tmp, op); |
| 3104 | tmp = ac_build_dpp(ctx, identity, src, dpp_row_sr(3), 0xf, 0xf, false); |
| 3105 | result = ac_build_alu_op(ctx, result, tmp, op); |
| 3106 | tmp = ac_build_dpp(ctx, identity, result, dpp_row_sr(4), 0xf, 0xe, false); |
| 3107 | result = ac_build_alu_op(ctx, result, tmp, op); |
| 3108 | tmp = ac_build_dpp(ctx, identity, result, dpp_row_sr(8), 0xf, 0xc, false); |
| 3109 | result = ac_build_alu_op(ctx, result, tmp, op); |
| 3110 | tmp = ac_build_dpp(ctx, identity, result, dpp_row_bcast15, 0xa, 0xf, false); |
| 3111 | result = ac_build_alu_op(ctx, result, tmp, op); |
| 3112 | tmp = ac_build_dpp(ctx, identity, result, dpp_row_bcast31, 0xc, 0xf, false); |
| 3113 | result = ac_build_alu_op(ctx, result, tmp, op); |
| 3114 | return result; |
| 3115 | } |
| 3116 | |
| 3117 | LLVMValueRef |
| 3118 | ac_build_inclusive_scan(struct ac_llvm_context *ctx, LLVMValueRef src, nir_op op) |
| 3119 | { |
| 3120 | ac_build_optimization_barrier(ctx, &src); |
| 3121 | LLVMValueRef result; |
| 3122 | LLVMValueRef identity = get_reduction_identity(ctx, op, |
| 3123 | ac_get_type_size(LLVMTypeOf(src))); |
| 3124 | result = LLVMBuildBitCast(ctx->builder, |
| 3125 | ac_build_set_inactive(ctx, src, identity), |
| 3126 | LLVMTypeOf(identity), ""); |
| 3127 | result = ac_build_scan(ctx, op, result, identity); |
| 3128 | |
| 3129 | return ac_build_wwm(ctx, result); |
| 3130 | } |
| 3131 | |
| 3132 | LLVMValueRef |
| 3133 | ac_build_exclusive_scan(struct ac_llvm_context *ctx, LLVMValueRef src, nir_op op) |
| 3134 | { |
| 3135 | ac_build_optimization_barrier(ctx, &src); |
| 3136 | LLVMValueRef result; |
| 3137 | LLVMValueRef identity = get_reduction_identity(ctx, op, |
| 3138 | ac_get_type_size(LLVMTypeOf(src))); |
| 3139 | result = LLVMBuildBitCast(ctx->builder, |
| 3140 | ac_build_set_inactive(ctx, src, identity), |
| 3141 | LLVMTypeOf(identity), ""); |
| 3142 | result = ac_build_dpp(ctx, identity, result, dpp_wf_sr1, 0xf, 0xf, false); |
| 3143 | result = ac_build_scan(ctx, op, result, identity); |
| 3144 | |
| 3145 | return ac_build_wwm(ctx, result); |
| 3146 | } |
| 3147 | |
| 3148 | LLVMValueRef |
| 3149 | ac_build_reduce(struct ac_llvm_context *ctx, LLVMValueRef src, nir_op op, unsigned cluster_size) |
| 3150 | { |
| 3151 | if (cluster_size == 1) return src; |
| 3152 | ac_build_optimization_barrier(ctx, &src); |
| 3153 | LLVMValueRef result, swap; |
| 3154 | LLVMValueRef identity = get_reduction_identity(ctx, op, |
| 3155 | ac_get_type_size(LLVMTypeOf(src))); |
| 3156 | result = LLVMBuildBitCast(ctx->builder, |
| 3157 | ac_build_set_inactive(ctx, src, identity), |
| 3158 | LLVMTypeOf(identity), ""); |
| 3159 | swap = ac_build_quad_swizzle(ctx, result, 1, 0, 3, 2); |
| 3160 | result = ac_build_alu_op(ctx, result, swap, op); |
| 3161 | if (cluster_size == 2) return ac_build_wwm(ctx, result); |
| 3162 | |
| 3163 | swap = ac_build_quad_swizzle(ctx, result, 2, 3, 0, 1); |
| 3164 | result = ac_build_alu_op(ctx, result, swap, op); |
| 3165 | if (cluster_size == 4) return ac_build_wwm(ctx, result); |
| 3166 | |
| 3167 | if (ctx->chip_class >= VI) |
| 3168 | swap = ac_build_dpp(ctx, identity, result, dpp_row_half_mirror, 0xf, 0xf, false); |
| 3169 | else |
| 3170 | swap = ac_build_ds_swizzle(ctx, result, ds_pattern_bitmode(0x1f, 0, 0x04)); |
| 3171 | result = ac_build_alu_op(ctx, result, swap, op); |
| 3172 | if (cluster_size == 8) return ac_build_wwm(ctx, result); |
| 3173 | |
| 3174 | if (ctx->chip_class >= VI) |
| 3175 | swap = ac_build_dpp(ctx, identity, result, dpp_row_mirror, 0xf, 0xf, false); |
| 3176 | else |
| 3177 | swap = ac_build_ds_swizzle(ctx, result, ds_pattern_bitmode(0x1f, 0, 0x08)); |
| 3178 | result = ac_build_alu_op(ctx, result, swap, op); |
| 3179 | if (cluster_size == 16) return ac_build_wwm(ctx, result); |
| 3180 | |
| 3181 | if (ctx->chip_class >= VI && cluster_size != 32) |
| 3182 | swap = ac_build_dpp(ctx, identity, result, dpp_row_bcast15, 0xa, 0xf, false); |
| 3183 | else |
| 3184 | swap = ac_build_ds_swizzle(ctx, result, ds_pattern_bitmode(0x1f, 0, 0x10)); |
| 3185 | result = ac_build_alu_op(ctx, result, swap, op); |
| 3186 | if (cluster_size == 32) return ac_build_wwm(ctx, result); |
| 3187 | |
| 3188 | if (ctx->chip_class >= VI) { |
| 3189 | swap = ac_build_dpp(ctx, identity, result, dpp_row_bcast31, 0xc, 0xf, false); |
| 3190 | result = ac_build_alu_op(ctx, result, swap, op); |
| 3191 | result = ac_build_readlane(ctx, result, LLVMConstInt(ctx->i32, 63, 0)); |
| 3192 | return ac_build_wwm(ctx, result); |
| 3193 | } else { |
| 3194 | swap = ac_build_readlane(ctx, result, ctx->i32_0); |
| 3195 | result = ac_build_readlane(ctx, result, LLVMConstInt(ctx->i32, 32, 0)); |
| 3196 | result = ac_build_alu_op(ctx, result, swap, op); |
| 3197 | return ac_build_wwm(ctx, result); |
| 3198 | } |
| 3199 | } |
| 3200 | |
| 3201 | LLVMValueRef |
| 3202 | ac_build_quad_swizzle(struct ac_llvm_context *ctx, LLVMValueRef src, |
| 3203 | unsigned lane0, unsigned lane1, unsigned lane2, unsigned lane3) |
| 3204 | { |
| 3205 | unsigned mask = dpp_quad_perm(lane0, lane1, lane2, lane3); |
| 3206 | if (ctx->chip_class >= VI && HAVE_LLVM >= 0x0600) { |
| 3207 | return ac_build_dpp(ctx, src, src, mask, 0xf, 0xf, false); |
| 3208 | } else { |
| 3209 | return ac_build_ds_swizzle(ctx, src, (1 << 15) | mask); |
| 3210 | } |
| 3211 | } |
| 3212 | |
| 3213 | LLVMValueRef |
| 3214 | ac_build_shuffle(struct ac_llvm_context *ctx, LLVMValueRef src, LLVMValueRef index) |
| 3215 | { |
| 3216 | index = LLVMBuildMul(ctx->builder, index, LLVMConstInt(ctx->i32, 4, 0), ""); |
| 3217 | return ac_build_intrinsic(ctx, |
| 3218 | "llvm.amdgcn.ds.bpermute", ctx->i32, |
| 3219 | (LLVMValueRef []) {index, src}, 2, |
| 3220 | AC_FUNC_ATTR_READNONE | |
| 3221 | AC_FUNC_ATTR_CONVERGENT); |
| 3222 | } |