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Valentin Clement 74751f4b0c
[flang] Add lowering for ASCII character constant
Lower character constant of KIND = 1 with the
`createStringLiteral` helper function.

This patch is part of the upstreaming effort from fir-dev branch.

Reviewed By: kiranchandramohan, schweitz

Differential Revision: https://reviews.llvm.org/D118992
2022-02-07 12:17:41 +01:00
.github github: Fix automated PR creation for backports 2022-02-04 22:22:01 -08:00
bolt [BOLT] Add nfc-check-setup script 2022-02-04 18:03:36 -08:00
clang [OpenCL] opencl-c.h: make attribute order consistent; NFC 2022-02-07 10:54:55 +00:00
clang-tools-extra Revert "[clangd] Properly compute framework-style include spelling" 2022-02-04 18:02:32 -05:00
cmake [cmake] Partially deduplicate `{llvm,compiler_rt}_check_linker_flag` for runtime libs and llvm 2022-01-29 06:07:24 +00:00
compiler-rt [TSan] Handle FreeBSD specific indirection of libpthread functions 2022-02-07 11:01:37 +01:00
cross-project-tests [Dexter] Remove false requirement of lldb for dexter regression tests on Windows 2022-01-26 11:33:50 +00:00
flang [flang] Add lowering for ASCII character constant 2022-02-07 12:17:41 +01:00
libc [libc] Set default CXX_STANDARD to C++17 and let targets set their own standard if needed. 2022-02-04 09:59:21 -05:00
libclc libclc: Add clspv64 target 2022-01-13 09:28:19 +00:00
libcxx [libc++] Add Unstable ABI CI run 2022-02-05 15:37:22 +01:00
libcxxabi [demangler] Preserve line numbering in copied demangler sources 2022-02-01 05:30:24 -08:00
libunwind [libunwind] [sparc] Add SPARCv9 support 2022-02-05 13:08:26 -08:00
lld [lld-macho] Add -pagezero_size 2022-02-06 13:15:16 -05:00
lldb [Breakpoint] Remove redundant member initialization (NFC) 2022-02-06 10:54:46 -08:00
llvm [Bitcode] Guard against out of bounds value reference 2022-02-07 12:16:13 +01:00
mlir [mlir] Use SmallBitVector instead of SmallDenseSet for AffineMap::compressSymbols 2022-02-07 00:21:44 +01:00
openmp [OpenMP] kmp_atomic_float10_max_min.c test should only be executed on x86 platform 2022-02-07 10:07:54 +00:00
polly Bump the trunk major version to 15 2022-02-01 23:54:52 -08:00
pstl Bump the trunk major version to 15 2022-02-01 23:54:52 -08:00
runtimes [cmake] Partially deduplicate `{llvm,compiler_rt}_check_linker_flag` for runtime libs and llvm 2022-01-29 06:07:24 +00:00
third-party Ensure newlines at the end of files (NFC) 2021-12-26 08:51:06 -08:00
utils [mlir][bazel] Update post ControlFlow dialect split 2022-02-06 17:21:48 -08:00
.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 Revert "Title: [RISCV] Add missing part of instruction vmsge {u}. VX Review By: craig.topper Differential Revision : https://reviews.llvm.org/D100115" 2021-04-14 08:04:37 +01:00
.clang-tidy [clangd] Cleanup of readability-identifier-naming 2022-02-01 13:31:52 +00:00
.git-blame-ignore-revs [lldb] Add 9494c510af to .git-blame-ignore-revs 2021-06-10 09:29:59 -07:00
.gitignore [NFC] Add CMakeUserPresets.json filename to .gitignore 2021-01-22 12:45:29 +01:00
.mailmap Add self to .mailmap 2021-10-12 15:51:01 +02:00
CONTRIBUTING.md docs: update some bug tracker references (NFC) 2022-01-10 15:59:08 -08:00
README.md Remove unused parallel-libs project 2021-10-21 14:34:39 -07:00
SECURITY.md [docs] Describe reporting security issues on the chromium tracker. 2021-05-19 15:21:50 -07:00

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 convert them 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:

  1. 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

  2. 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, compiler-rt,cross-project-tests, flang, libc, libclc, libcxx, libcxxabi, libunwind, lld, lldb, mlir, openmp, polly, or pstl.

        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.