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Craig Topper c7cbba03a9 [AVX-512] Add support for commuting VPTERNLOG instructions. 
VPTERNLOG is a ternary instruction with an immediate specifying the logical operation to perform. For each bit position in the 3 source vectors the bit from each source is concatenated together and the resulting 3-bit value is used to select a bit in the immediate. This bit value is written to the result vector.

We can commute this by swapping operands and modifying the immediate. To modify the immediate we need to swap two pairs of bits. The pairs correspond to the locations in the immediate where the commuted operands bits have opposite values and the uncommuted operand has the same value. Bits 0 and 7 will never be swapped since the relevant bits from all sources are the same value.

This refactors and reuses parts of the FMA3 commuting code which is also a three operand instruction.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282132 91177308-0d34-0410-b5e6-96231b3b80d8
2016-09-22 03:00:50 +00:00
bindings Formatting with clang-format patch r280700 2016-09-06 17:03:02 +00:00
cmake fix typo in comment [NFC] 2016-09-21 17:15:23 +00:00
docs AMDGPU: Improve documentation. 2016-09-20 09:04:51 +00:00
examples [Kaleidoscope] Make Chapter 2 use llvm::make_unique, rather than a helper. 2016-09-19 23:00:27 +00:00
include [RegisterBankInfo] Move to statically allocated RegisterBank. 2016-09-22 02:10:37 +00:00
lib [AVX-512] Add support for commuting VPTERNLOG instructions. 2016-09-22 03:00:50 +00:00
projects Enable in-tree builds of parallel-libs. 2016-09-09 21:34:12 +00:00
resources
runtimes [CMake] Fixing lit for runtimes directory 2016-09-15 06:14:13 +00:00
test [AVX-512] Add support for commuting VPTERNLOG instructions. 2016-09-22 03:00:50 +00:00
tools [ThinLTO] Emit files for distributed builds for all modules 2016-09-21 19:12:05 +00:00
unittests [LCG] Redesign the lazy post-order iteration mechanism for the 2016-09-16 10:20:17 +00:00
utils Revert "TableGen: Switch from a std::map to a DenseMap in CodeGenSubRegIndex. NFC" 2016-09-21 00:25:45 +00:00
.arcconfig Upgrade all the .arcconfigs to https. 2016-07-14 13:15:37 +00:00
.clang-format
.clang-tidy .clang-tidy: correct style name is 'camelBack' not 'lowerCase'. 2016-09-13 19:04:26 +00:00
.gitignore gitignore: ignore VS Code editor files 2016-09-02 22:54:26 +00:00
CMakeLists.txt Try to fix a circular dependency in the modules build. 2016-09-06 20:16:19 +00:00
CODE_OWNERS.TXT Take ownership of libLTO as discussed on llvm-dev. 2016-09-15 17:42:39 +00:00
configure Remove autoconf support 2016-01-26 21:29:08 +00:00
CREDITS.TXT Shamelessly add myself to CREDITS.TXT 2016-08-04 16:28:22 +00:00
LICENSE.TXT Remove autoconf references from LICENSE.TXT 2016-08-12 20:11:03 +00:00
llvm.spec.in
LLVMBuild.txt
README.txt Revert rL277454 2016-08-02 13:26:07 +00:00
RELEASE_TESTERS.TXT Adding RELEASE_TESTERS.TXT 2016-07-21 16:46:44 +00:00

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.