forked from OSchip/llvm-project
24bf6ff4e0
Based on internal testing at Google we found that setting the profile summary cutoff threshold to 999950 yields the best results in terms of itlb and icache metrics (as observed on Intel CPUs). *default* = Split out code if no profile count available for block *size-%* = The fraction of bytes split out of .text and .text.hot *itlb* = Misses per kilo instructions (MPKI) for itlb *icache* = Misses per kilo instructions (MPKI) for L1 icache Search1 | cutoff | size-% | itlb | icache | |---------|---------|-----------|---------| | default | 42.5861 | 0.0822151 | 2.46363 | | 999999 | 44.9350 | 0.0767194 | 2.44416 | | 999950 | 50.0660 | 0.075744 | 2.4091 | | 999500 | 56.9158 | 0.082564 | 2.4188 | | 995000 | 63.8625 | 0.0814927 | 2.42832 | | 990000 | 71.7314 | 0.106906 | 2.57785 | Search2 | cutoff | size-% | itlb | icache | |---------|--------|----------|---------| | default | 2.8845 | 0.626712 | 4.73245 | | 999999 | 3.3291 | 0.602309 | 4.70045 | | 999950 | 3.8577 | 0.587842 | 4.71632 | | 999500 | 4.4170 | 0.63577 | 4.68351 | | 995000 | 5.1020 | 0.657969 | 4.82272 | | 990000 | 5.7153 | 0.719122 | 5.39496 | Differential Revision: https://reviews.llvm.org/D89085 |
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| .. | ||
| benchmarks | ||
| bindings | ||
| cmake | ||
| docs | ||
| examples | ||
| include | ||
| lib | ||
| projects | ||
| resources | ||
| runtimes | ||
| test | ||
| tools | ||
| unittests | ||
| utils | ||
| .clang-format | ||
| .clang-tidy | ||
| .gitattributes | ||
| .gitignore | ||
| CMakeLists.txt | ||
| CODE_OWNERS.TXT | ||
| CREDITS.TXT | ||
| LICENSE.TXT | ||
| LLVMBuild.txt | ||
| README.txt | ||
| RELEASE_TESTERS.TXT | ||
| configure | ||
| llvm.spec.in | ||
README.txt
The LLVM Compiler Infrastructure ================================ 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.