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Mirror of https://github.com/RPCS3/llvm-mirror
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Petar Avramovic 4fef9ac108 [MIPS GlobalISel] Select count leading zeros 
llvm.ctlz.<type> intrinsic has additional i1 argument is_zero_undef,
it tells whether zero as the first argument produces a defined result.
MIPS clz instruction returns 32 for zero input.
G_CTLZ is generated from llvm.ctlz.<type> (<type> <src>, i1 false)
intrinsics, clang generates these intrinsics from __builtin_clz and
__builtin_clzll.
G_CTLZ_ZERO_UNDEF can also be generated from llvm.ctlz with true as
second argument. It is also traditionally part of and many algorithms
that are now predicated on avoiding zero-value inputs.

Add narrow scalar for G_CTLZ (algorithm uses G_CTLZ_ZERO_UNDEF).
Lower G_CTLZ_ZERO_UNDEF and select G_CTLZ for MIPS32.

Differential Revision: https://reviews.llvm.org/D73214
2020-01-27 09:43:38 +01:00
benchmarks Pull google/benchmark library to the LLVM tree 2018-08-28 09:42:41 +00:00
bindings Pass length of string in Go binding of CreateCompileUnit 2020-01-17 13:35:30 -08:00
cmake Revert "[tablegen] Emit string literals instead of char arrays" 2020-01-23 18:22:22 +03:00
docs [IR] masked gather/scatter alignment should be set 2020-01-26 18:51:36 +01:00
examples [examples][ORC] Add an example of how to use a custom ObjectLinkingLayer plugin. 2020-01-23 19:18:16 -08:00
include [MIPS GlobalISel] Select count leading zeros 2020-01-27 09:43:38 +01:00
lib [MIPS GlobalISel] Select count leading zeros 2020-01-27 09:43:38 +01:00
projects Add few docs and implementation of strcpy and strcat. 2019-10-04 17:30:54 +00:00
resources
runtimes [CMake] Prefer multi-target variables over generic target variables in runtimes build 2020-01-17 15:18:18 -08:00
test [MIPS GlobalISel] Select count leading zeros 2020-01-27 09:43:38 +01:00
tools [llvm-objcopy][COFF] Add support for --set-section-flags 2020-01-24 07:12:55 -08:00
unittests [Support] Fix race in threading test, found by TSan 2020-01-25 15:22:12 +01:00
utils [gn build] Port dd8e0a0a23b 2020-01-25 02:40:48 +00:00
.arcconfig [llvm] Set up .arcconfig to point to Diffusion L repository 2018-01-12 15:37:41 +00:00
.clang-format
.clang-tidy Disable tidy checks with too many hits 2019-02-01 11:20:13 +00:00
.gitattributes Fix the "git modified" issue on the preserve-comments-crlf.s. 2019-09-10 12:17:49 +00:00
.gitignore gitignore: Ignore Qt Creator project configuration files. NFC 2019-06-12 08:28:31 +00:00
CMakeLists.txt Bump the trunk major version to 11 2020-01-15 13:38:01 +01:00
CODE_OWNERS.TXT [VE] Target stub for NEC SX-Aurora 2020-01-09 11:17:35 +01:00
configure
CREDITS.TXT Update email address. 2019-07-17 07:02:02 +00:00
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
LLVMBuild.txt Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
README.txt Test commit. 2019-10-03 14:57:49 +00:00
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.