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dc58d1e099
lowering to support both anyext and zext and to custom lower for many different microarchitectures. Using this allows us to get *exactly* the right code for zext and anyext shuffles in all the vector sizes. For v16i8, the improvement is *huge*. The new SSE2 test case added I refused to add before this because it was sooooo muny instructions. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218143 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.