forked from OSchip/llvm-project
b953cc36e2
Summary: Only constant offsets (*_IMM opcodes) are merged. It reuses code for LDS load/store merging. It relies on the scheduler to group loads. The results are mixed, I think they are mostly positive. Most shaders are affected, so here are total stats only: SGPRS: 2072198 -> 2151462 (3.83 %) VGPRS: 1628024 -> 1634612 (0.40 %) Spilled SGPRs: 7883 -> 8942 (13.43 %) Spilled VGPRs: 97 -> 101 (4.12 %) Scratch size: 1488 -> 1492 (0.27 %) dwords per thread Code Size: 60222620 -> 52940672 (-12.09 %) bytes Max Waves: 374337 -> 373066 (-0.34 %) There is 13.4% increase in SGPR spilling, DiRT Showdown spills a few more VGPRs (now 37), but 12% decrease in code size. These are the new stats for SGPR spilling. We already spill a lot SGPRs, so it's uncertain whether more spilling will make any difference since SGPRs are always spilled to VGPRs: SGPR SPILLING APPS Shaders SpillSGPR AvgPerSh alien_isolation 2938 100 0.0 batman_arkham_origins 589 6 0.0 bioshock-infinite 1769 4 0.0 borderlands2 3968 22 0.0 counter_strike_glob.. 1142 60 0.1 deus_ex_mankind_div.. 1410 79 0.1 dirt-showdown 533 4 0.0 dirt_rally 364 1163 3.2 divinity 1052 2 0.0 dota2 1747 7 0.0 f1-2015 776 1515 2.0 grid_autosport 1767 1505 0.9 hitman 1413 273 0.2 left_4_dead_2 1762 4 0.0 life_is_strange 1296 26 0.0 mad_max 358 96 0.3 metro_2033_redux 2670 60 0.0 payday2 1362 22 0.0 portal 474 3 0.0 saints_row_iv 1704 8 0.0 serious_sam_3_bfe 392 1348 3.4 shadow_of_mordor 1418 12 0.0 shadow_warrior 3956 239 0.1 talos_principle 324 1735 5.4 thea 172 17 0.1 tomb_raider 1449 215 0.1 total_war_warhammer 242 56 0.2 ue4_effects_cave 295 55 0.2 ue4_elemental 572 12 0.0 unigine_tropics 210 56 0.3 unigine_valley 278 152 0.5 victor_vran 1262 84 0.1 yofrankie 82 2 0.0 Reviewers: arsenm, nhaehnle Subscribers: kzhuravl, wdng, yaxunl, dstuttard, tpr, llvm-commits, t-tye Differential Revision: https://reviews.llvm.org/D38949 llvm-svn: 317751 |
||
|---|---|---|
| .. | ||
| bindings | ||
| cmake | ||
| docs | ||
| examples | ||
| include | ||
| lib | ||
| projects | ||
| resources | ||
| runtimes | ||
| test | ||
| tools | ||
| unittests | ||
| utils | ||
| .arcconfig | ||
| .clang-format | ||
| .clang-tidy | ||
| .gitignore | ||
| CMakeLists.txt | ||
| CODE_OWNERS.TXT | ||
| CREDITS.TXT | ||
| LICENSE.TXT | ||
| LLVMBuild.txt | ||
| README.txt | ||
| RELEASE_TESTERS.TXT | ||
| configure | ||
| llvm.spec.in | ||
README.txt
Low Level Virtual Machine (LLVM) ================================ This directory and its subdirectories contain source code for LLVM, a toolkit for the construction of highly optimized compilers, optimizers, and runtime environments. LLVM is open source software. You may freely distribute it under the terms of the license agreement found in LICENSE.txt. Please see the documentation provided in docs/ for further assistance with LLVM, and in particular docs/GettingStarted.rst for getting started with LLVM and docs/README.txt for an overview of LLVM's documentation setup. If you are writing a package for LLVM, see docs/Packaging.rst for our suggestions.