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lhbrx and lwbrx not only load their data with byte swapping, but also clear the upper 32 bits (at least). As a result, they can be added to the PPCISelDAGToDAG peephole optimization as frontier instructions for the removal of unnecessary zero extensions. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225189 91177308-0d34-0410-b5e6-96231b3b80d8
Low Level Virtual Machine (LLVM) ================================ This directory and its subdirectories contain source code for the Low Level Virtual Machine, 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.
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