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Mirror of https://github.com/RPCS3/llvm-mirror
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f84a9cd429
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Fraser Cormack f84a9cd429 [RISCV] Optimize "dominant element" BUILD_VECTORs 
This patch adds an optimization path for BUILD_VECTOR nodes where the
majority of the elements are identical. These can be splatted, with the
remaining elements patched up with INSERT_VECTOR_ELTs. The threshold can
be tweaked as required - it is currently conservative. Undef elements
are disregarded when judging the dominance of a particular element. This
allows them to be covered by the splat value.

In addition, vectors of 2 elements are always optimized to a splat (for
the upper element) and an insert at element zero.

This optimization is disabled when optimizing for size.

Reviewed By: craig.topper

Differential Revision: https://reviews.llvm.org/D98700
2021-03-17 10:09:04 +00:00
benchmarks
bindings [OCaml] Fix buildbot failure in OCaml tests 2021-03-17 11:29:55 +05:30
cmake [test] Make sure the test program in GetErrcMessages.cmake exits normally. 2021-03-16 12:22:40 +01:00
docs [Docs] Mention linking to reviews page when committing 2021-03-16 23:04:22 +05:30
examples [ORC] Fix some comments in the LLJITWithObjectLinkingLayerPlugin example. 2021-03-12 19:13:42 -08:00
include [MC] Delete unused MCOperand::{create,is,get}FPImm 2021-03-17 00:30:38 -07:00
lib [RISCV] Optimize "dominant element" BUILD_VECTORs 2021-03-17 10:09:04 +00:00
projects llvmbuildectomy - replace llvm-build by plain cmake 2020-11-13 10:35:24 +01:00
resources
runtimes [PR48898][CMake] Support MinGW Toolchain tool sin llvm_ExternalProject_Add 2021-03-02 22:45:05 +01:00
test [RISCV] Optimize "dominant element" BUILD_VECTORs 2021-03-17 10:09:04 +00:00
tools [llvm-nm] Add --format=just-symbols and make --just-symbol-name its alias 2021-03-16 10:07:01 -07:00
unittests [BasicAA] Drop dependency on Loop Info. PR43276 2021-03-17 11:43:44 +07:00
utils [TableGen] Fix excessive compile time issue in FixedLenDecoderEmitter 2021-03-17 09:28:50 +00:00
.clang-format
.clang-tidy - Update .clang-tidy to ignore parameters of main like functions for naming violations in clang and llvm directory 2020-01-31 16:49:45 +00:00
.gitattributes Fix the "git modified" issue on the preserve-comments-crlf.s. 2019-09-10 12:17:49 +00:00
.gitignore [clangd] Store index in '.cache/clangd/index' instead of '.clangd/index' 2020-07-07 14:53:45 +02:00
CMakeLists.txt [test] Add ability to get error messages from CMake for errc substitution 2021-03-15 20:56:08 +01:00
CODE_OWNERS.TXT [M68k][CODE_OWNERS](0/8) Add code owner for the M68k target 2021-03-08 12:30:56 -08:00
configure
CREDITS.TXT [NFC] Add contributors names to CREDITS.TXT 2020-10-07 13:22:55 -04:00
LICENSE.TXT Fix typos throughout the license files that somehow I and my reviewers 2019-01-21 09:52:34 +00:00
llvm.spec.in Update structured references to the license to the new license. 2019-01-19 11:30:51 +00:00
README.txt Test commit. 2020-03-14 18:08:26 -07:00
RELEASE_TESTERS.TXT Update the list of platforms & archs 2018-12-16 14:47:16 +00:00

README.txt 

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.