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If LowerGEP is enabled, it can lower a GEP with multiple indices into GEPs with a single index or arithmetic operations. Lowering GEPs can always extract structure indices. Lowering GEPs can also give use more optimization opportunities. It can benefit passes like CSE, LICM and CGP. Reviewed in http://reviews.llvm.org/D5864 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222328 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.