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Brian Gesiak 7125d66f99 [Coroutines][2/6] New pass manager: coro-split Summary: This patch has four dependencies: 1. The first in this series of patches that implement coroutine passes in the new pass manager: https://reviews.llvm.org/D71898. 2. A patch that introduces an API for CGSCC passes to add new reference edges to a `LazyCallGraph`, `updateCGAndAnalysisManagerForCGSCCPass`: https://reviews.llvm.org/D72025. 3. A patch that introduces a `CallGraphUpdater` helper class that is capable of mutating internal `LazyCallGraph` state in order to insert new function nodes into a specific SCC: https://reviews.llvm.org/D70927. 4. And finally, a small edge case fix for updating `LazyCallGraph` that patch 3 above happens to run into: https://reviews.llvm.org/D72226. This is the second in a series of patches that ports the LLVM coroutines passes to the new pass manager infrastructure. This patch implements 'coro-split'. Some notes: * Using the new CGSCC pass manager resulted in IR being printed in the reverse order in some tests. To prevent FileCheck checks from failing due to these reversed orders, this patch splits up test files that test multiple different coroutine functions: specifically coro-alloc-with-param.ll, coro-split-eh.ll, and coro-eh-aware-edge-split.ll. * CoroSplit.cpp contained 2 overloads of `splitCoroutine`, one of which dispatched to the other based on the coroutine ABI being used (C++20 switch-based versus Swift returned-continuation-based). I found this confusing, especially with the additional branching based on `CallGraph` vs. `LazyCallGraph`, so I removed the ABI-checking overload of `splitCoroutine`. Reviewers: GorNishanov, lewissbaker, chandlerc, jdoerfert, junparser, deadalnix, wenlei Reviewed By: wenlei Subscribers: wenlei, qcolombet, EricWF, hiraditya, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D71899		2020-02-17 23:35:27 -05:00
clang	[NFC] Remove trailing space	2020-02-18 10:49:13 +08:00
clang-tools-extra	Reland "[clang-tools-extra] fix the check for if '-latomic' is necessary""	2020-02-17 16:53:29 +00:00
compiler-rt	[compiler-rt] Make various Apple lit substitutions work correctly for other Apple platforms.	2020-02-14 13:53:54 -08:00
debuginfo-tests	[debuginfo-tests][Dexter] Fix some Windows-unfriendly Dexter behaviours	2020-02-13 14:24:33 +00:00
libc	[libc] Add Convenience syscall Template Function	2020-02-13 14:39:16 -05:00
libclc	libclc/r600: Use target specific builtins to implement rsqrt and native_rsqrt	2020-02-09 14:42:15 -05:00
libcxx	Revert "[libc++] Move abs and div into stdlib.h to fix header cycle."	2020-02-17 17:59:08 +01:00
libcxxabi	[libcxxabi] Fix layout of __cxa_exception for win64	2020-02-03 09:55:02 +02:00
libunwind	unwind: rename `__personality_routine` to `_Unwind_Personality_Fn`	2020-02-10 08:52:31 -08:00
lld	[Support] On Windows, ensure hardware_concurrency() extends to all CPU sockets and all NUMA groups	2020-02-14 10:24:22 -05:00
lldb	[lldb/Plugins] Rename initializers to match their plugin name.	2020-02-17 20:07:53 -08:00
llvm	[Coroutines][2/6] New pass manager: coro-split	2020-02-17 23:35:27 -05:00
mlir	[mlir] Fix multiple titles	2020-02-17 13:55:46 -08:00
openmp	[openmp][cmake] passing option argument correctly	2020-02-13 09:33:58 -08:00
parallel-libs	Fix typos throughout the license files that somehow I and my reviewers	2019-01-21 09:52:34 +00:00
polly	[Polly] Run polly-update-format after commit 55cfb1. NFC.	2020-02-17 15:57:06 -06:00
pstl	Bump the trunk major version to 11	2020-01-15 13:38:01 +01:00
.arcconfig	Include phabricator.uri in .arcconfig	2020-01-23 11:50:18 -08:00
.clang-format	Add .clang-tidy and .clang-format files to the toplevel of the	2019-01-29 16:43:16 +00:00
.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
.git-blame-ignore-revs	Add LLDB reformatting to .git-blame-ignore-revs	2019-09-04 09:31:55 +00:00
.gitignore	Add a newline at the end of the file	2019-09-04 06:33:46 +00:00
CONTRIBUTING.md	Add contributing info to CONTRIBUTING.md and README.md	2019-12-02 15:47:15 +00:00
README.md	[README] Add note on using cmake to perform the build	2020-02-12 14:51:24 -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
- mkdir build
- cd build
- cmake -G <generator> [options] ../llvm
  
  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 . [-- [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.