540d255167
This PR is to add vector reduction instructions according to https://llvm.org/docs/GlobalISel/GenericOpcode.html#vector-reduction-operations and widen in such a way a range of successful supported conversions, covering new cases of vector reduction instructions which IRTranslator is unable to resolve. By legalizing vector reduction instructions we introduce a new instruction patterns that should be addressed, including patterns that are delegated to pre-legalize step. To address this problem, a new pass is added that is to bring newly generated instructions after legalization to an aspect required by instruction selection. Expected overheads for existing cases is minimal, because a new pass is working only with newly introduced instructions, otherwise it's just a additional code traverse without any actions.
The LLVM Compiler Infrastructure ================================ 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.