8f174dde92
The pipeliner is generating a serial sequence that causes poor register allocation when a post-increment instruction appears prior to the use of the post-increment register. This occurs when there is a circular set of dependences involved with a sequence of instructions in the same cycle. In this case, there is no serialization of the parallel semantics that will not cause an additional register to be allocated. This patch fixes the problem by changing the instructions so that the post-increment instruction is used by the subsequent instruction, which enables the register allocator to make a better decision and not require another register. Patch by Brendon Cahoon. llvm-svn: 315466 |
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| include | ||
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| runtimes | ||
| test | ||
| tools | ||
| unittests | ||
| utils | ||
| .arcconfig | ||
| .clang-format | ||
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| 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.