forked from OSchip/llvm-project
9a779623d9
Summary: When propagating mass through irregular loops, the mass flowing through each loop header may not be equal. This was causing wrong frequencies to be computed for irregular loop headers. Fixed by keeping track of masses flowing through each of the headers in an irregular loop. To do this, we now keep track of per-header backedge weights. After the loop mass is distributed through the loop, the backedge weights are used to re-distribute the loop mass to the loop headers. Since each backedge will have a mass proportional to the different branch weights, the loop headers will end up with a more approximate weight distribution (as opposed to the current distribution that assumes that every loop header is the same). Reviewers: dexonsmith Subscribers: llvm-commits Differential Revision: http://reviews.llvm.org/D10348 llvm-svn: 239843 |
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| lib | ||
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| test | ||
| tools | ||
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| utils | ||
| .arcconfig | ||
| .clang-format | ||
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| .gitignore | ||
| CMakeLists.txt | ||
| CODE_OWNERS.TXT | ||
| CREDITS.TXT | ||
| LICENSE.TXT | ||
| LLVMBuild.txt | ||
| Makefile | ||
| Makefile.common | ||
| Makefile.config.in | ||
| Makefile.rules | ||
| README.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're writing a package for LLVM, see docs/Packaging.rst for our suggestions.