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Kito Cheng 56f8ee5d8e [RISCV] Add -mtune support 
- The goal of this patch is improve option compatible with RISCV-V GCC,
   -mcpu support on GCC side will sent patch in next few days.

 - -mtune only affect the pipeline model and non-arch/extension related
   target feature, e.g. instruction fusion; in td file it called
   TuneFeatures, which is introduced by X86 back-end[1].

 - -mtune accept all valid option for -mcpu and extra alias processor
   option, e.g. `generic`, `rocket` and `sifive-7-series`, the purpose is
   option compatible with RISCV-V GCC.

 - Processor alias for -mtune will resolve according the current target arch,
   rv32 or rv64, e.g. `rocket` will resolve to `rocket-rv32` or `rocket-rv64`.

 - Interaction between -mcpu and -mtune:
   * -mtune has higher priority than -mcpu for pipeline model and
     TuneFeatures.

[1] https://reviews.llvm.org/D85165

Reviewed By: luismarques

Differential Revision: https://reviews.llvm.org/D89025
2020-10-16 13:55:08 +08:00
benchmarks
bindings [bindings/go] Fix TestAttributes after D88241 2020-09-25 20:31:45 -07:00
cmake [cmake] Limit missing external lit warning to be shown once 2020-10-13 21:03:49 -07:00
docs [AMDGPU] gfx1032 target 2020-10-15 12:41:18 -07:00
examples [ORC][examples] Temporarily remove LLJITWithChildProcess until ORC TPC lands 2020-10-01 10:25:13 +02:00
include [RISCV] Add -mtune support 2020-10-16 13:55:08 +08:00
lib [RISCV] Add -mtune support 2020-10-16 13:55:08 +08:00
projects Add few docs and implementation of strcpy and strcat. 2019-10-04 17:30:54 +00:00
resources
runtimes [CMake] Don't use CMakePushCheckState 2020-10-02 17:13:34 -07:00
test [llvm-cov] Fix test cases. 2020-10-15 22:13:35 -07:00
tools [llvm-cov] don't include all source files when provided source files are filtered out 2020-10-15 18:11:01 -07:00
unittests Revert "Reland "[SCEV] Model ptrtoint(SCEVUnknown) cast not as unknown, but as zext/trunc/self of SCEVUnknown"" and it's follow-ups 2020-10-14 16:09:18 +03:00
utils [gn bulid] Remove phantom WebAssembly tablegen() calls 2020-10-15 16:14:11 -04:00
.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 Guard find_library(tensorflow_c_api ...) by checking for TENSORFLOW_C_LIB_PATH to be set by the user 2020-09-28 22:15:55 +00:00
CODE_OWNERS.TXT [CSKY 1/n] Add basic stub or infra of csky backend 2020-10-10 10:44:08 +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
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. 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
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started with LLVM and docs/README.txt for an overview of LLVM's
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If you are writing a package for LLVM, see docs/Packaging.rst for our
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