forked from OSchip/llvm-project
c00e48a3db
In D21740, we discussed trying to make this a more general matcher. However, I didn't see a clean way to handle the regular m_Not cases and these non-splat vector patterns, so I've opted for the direct approach here. If there are other potential uses of areInverseVectorBitmasks(), we could move that helper function to a higher level. There is an open question as to which is of these forms should be considered the canonical IR: %sel = select <4 x i1> <i1 true, i1 false, i1 false, i1 true>, <4 x i32> %a, <4 x i32> %b %shuf = shufflevector <4 x i32> %a, <4 x i32> %b, <4 x i32> <i32 0, i32 5, i32 6, i32 3> Differential Revision: http://reviews.llvm.org/D22114 llvm-svn: 275289 |
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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.