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We currently require SCEV, which requires DT/LI. Those are expensive to compute, but the pass only runs for functions that have the safestack attribute. Compute DT/LI to build SCEV lazily, only when the pass is actually going to transform the function. Differential Revision: https://reviews.llvm.org/D31302 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@302610 91177308-0d34-0410-b5e6-96231b3b80d8
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.