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Mehdi Amini 973ddb7d6e Define a `NoTerminator` traits that allows operations with a single block region to not provide a terminator In particular for Graph Regions, the terminator needs is just a historical artifact of the generalization of MLIR from CFG region. Operations like Module don't need a terminator, and before Module migrated to be an operation with region there wasn't any needed. To validate the feature, the ModuleOp is migrated to use this trait and the ModuleTerminator operation is deleted. This patch is likely to break clients, if you're in this case: - you may iterate on a ModuleOp with `getBody()->without_terminator()`, the solution is simple: just remove the ->without_terminator! - you created a builder with `Builder::atBlockTerminator(module_body)`, just use `Builder::atBlockEnd(module_body)` instead. - you were handling ModuleTerminator: it isn't needed anymore. - for generic code, a `Block::mayNotHaveTerminator()` may be used. Differential Revision: https://reviews.llvm.org/D98468		2021-03-25 03:59:03 +00:00
.github	Removing the main to master sync GitHub workflow.	2021-01-28 12:18:25 -08:00
clang	[Driver] Use -dynamic-linker /lib/ld-musl-i386.so.1 for i?86-linux-musl	2021-03-24 19:44:53 -07:00
clang-tools-extra	[clang-tidy] Ignore all spaces in the list of checks	2021-03-24 06:43:13 -07:00
compiler-rt	[dfsan] test flush on only x86	2021-03-25 02:45:43 +00:00
debuginfo-tests	[dexter] Fix DexLimitSteps when breakpoint can't be set at requested location	2021-03-23 11:33:43 +00:00
flang	[flang][fir] Add the pre-code gen rewrite pass and codegen ops.	2021-03-24 19:27:10 -07:00
libc	[libc] Introduces gmtime_r to LLVM libc, based on C99/C2X/Single Unix Sp.	2021-03-22 14:04:05 -07:00
libclc	libclc: Add clspv target to libclc	2021-03-04 00:19:10 -05:00
libcxx	[libc++] Match declaration for non-member function std::swap(std::packaged_task) with what standard specify	2021-03-24 22:33:32 +00:00
libcxxabi	[libc++][AIX] Initial patch to unblock the libc++ build on AIX	2021-03-24 22:13:20 +00:00
libunwind	[libunwind] Install the DLL when doing "ninja install"	2021-03-07 10:36:22 +02:00
lld	[lld-macho][nfc] Fixed test so it output to %t/ rather than current directory.	2021-03-24 16:55:37 -04:00
lldb	[lldb/ObjC] Make the NonPointerIsaCache initialization lazy	2021-03-24 20:08:06 -07:00
llvm	[RISCV] Remove duplicate DebugLoc variables from cases in ReplaceNodeResults. NFC	2021-03-24 20:23:03 -07:00
mlir	Define a `NoTerminator` traits that allows operations with a single block region to not provide a terminator	2021-03-25 03:59:03 +00:00
openmp	[OpenMP] Misc. changes that add or remove pointer/bound checks	2021-03-23 18:55:08 -05:00
parallel-libs	Reapply "Try enabling -Wsuggest-override again, using add_compile_options instead of add_compile_definitions for disabling it in unittests/ directories."	2020-07-22 17:50:19 -07:00
polly	[Polly] Fix -Wunused-function in -DLLVM_ENABLE_ASSERTIONS=off builds	2021-03-24 19:56:43 -07:00
pstl	Rename top-level LICENSE.txt files to LICENSE.TXT	2021-03-10 21:26:24 -08:00
runtimes	[runtimes] Add the libc project to the list of runtimes.	2021-03-23 17:33:03 +00:00
utils/arcanist	Fix arc lint's clang-format rule: only format the file we were asked to format.	2020-10-11 14:24:23 -07:00
.arcconfig	Add modern arc config for default "onto" branch	2021-02-22 11:58:13 -08:00
.arclint	PR46997: don't run clang-format on clang's testcases.	2020-08-04 17:53:25 -07:00
.clang-format	…
.clang-tidy	…
.git-blame-ignore-revs	NFC: Add whitespace-changing revisions to .git-blame-ignore-revs	2020-09-21 20:17:24 -04:00
.gitignore	[NFC] Add CMakeUserPresets.json filename to .gitignore	2021-01-22 12:45:29 +01:00
CONTRIBUTING.md	…
README.md	[doc] Use cmake's -S option to simplify the build instructions	2021-02-16 14:47:06 -06:00

README.md

The LLVM Compiler Infrastructure

This directory and its sub-directories contain source code for LLVM, a toolkit for the construction of highly optimized compilers, optimizers, and run-time environments.

The README briefly describes how to get started with building LLVM. For more information on how to contribute to the LLVM project, please take a look at the Contributing to LLVM guide.

Getting Started with the LLVM System

Taken from https://llvm.org/docs/GettingStarted.html.

Overview

Welcome to the LLVM project!

The LLVM project has multiple components. The core of the project is itself called "LLVM". This contains all of the tools, libraries, and header files needed to process intermediate representations and converts it into object files. Tools include an assembler, disassembler, bitcode analyzer, and bitcode optimizer. It also contains basic regression tests.

C-like languages use the Clang front end. This component compiles C, C++, Objective-C, and Objective-C++ code into LLVM bitcode -- and from there into object files, using LLVM.

Other components include: the libc++ C++ standard library, the LLD linker, and more.

Getting the Source Code and Building LLVM

The LLVM Getting Started documentation may be out of date. The Clang Getting Started page might have more accurate information.

This is an example work-flow and configuration to get and build the LLVM source:

Checkout LLVM (including related sub-projects like Clang):
- git clone https://github.com/llvm/llvm-project.git
- Or, on windows, git clone --config core.autocrlf=false https://github.com/llvm/llvm-project.git
Configure and build LLVM and Clang:
- cd llvm-project
- cmake -S llvm -B build -G <generator> [options]
  
  Some common build system generators are:
  - Ninja --- for generating Ninja build files. Most llvm developers use Ninja.
  - Unix Makefiles --- for generating make-compatible parallel makefiles.
  - Visual Studio --- for generating Visual Studio projects and solutions.
  - Xcode --- for generating Xcode projects.
  Some Common options:
  - -DLLVM_ENABLE_PROJECTS='...' --- semicolon-separated list of the LLVM sub-projects you'd like to additionally build. Can include any of: clang, clang-tools-extra, libcxx, libcxxabi, libunwind, lldb, compiler-rt, lld, polly, or debuginfo-tests.
    
    For example, to build LLVM, Clang, libcxx, and libcxxabi, use -DLLVM_ENABLE_PROJECTS="clang;libcxx;libcxxabi".
  - -DCMAKE_INSTALL_PREFIX=directory --- Specify for directory the full path name of where you want the LLVM tools and libraries to be installed (default /usr/local).
  - -DCMAKE_BUILD_TYPE=type --- Valid options for type are Debug, Release, RelWithDebInfo, and MinSizeRel. Default is Debug.
  - -DLLVM_ENABLE_ASSERTIONS=On --- Compile with assertion checks enabled (default is Yes for Debug builds, No for all other build types).
- cmake --build build [-- [options] <target>] or your build system specified above directly.
  - The default target (i.e. ninja or make) will build all of LLVM.
  - The check-all target (i.e. ninja check-all) will run the regression tests to ensure everything is in working order.
  - CMake will generate targets for each tool and library, and most LLVM sub-projects generate their own check-<project> target.
  - Running a serial build will be slow. To improve speed, try running a parallel build. That's done by default in Ninja; for make, use the option -j NNN, where NNN is the number of parallel jobs, e.g. the number of CPUs you have.
- For more information see CMake

Consult the Getting Started with LLVM page for detailed information on configuring and compiling LLVM. You can visit Directory Layout to learn about the layout of the source code tree.