forked from OSchip/llvm-project
7467510453
There's effectively no difference for the cases with variables. We just trade a sub for an add on those. But the case with a subtract from constant would require an extra move instruction on x86, so this looks like a reasonable generic combine. llvm-svn: 353619 |
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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.