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Jez Ng 78976bf3da [lld-macho] Support parsing of bitcode within archives
Also error out if we find anything other than an object or bitcode file
in the archive.

Note that we were previously inserting the symbols and sections of the
unpacked ObjFile into the containing ArchiveFile. This was actually
unnecessary -- we can just insert the ObjectFile (or BitcodeFile) into
the `inputFiles` vector. This is the approach taken by LLD-ELF.

Reviewed By: thakis

Differential Revision: https://reviews.llvm.org/D92539
2020-12-08 10:34:32 -08:00
.github/workflows [PATCH] github actions: Pepare main branch for being read/write 2020-12-06 22:16:36 -08:00
clang [Time-report] Add a flag -ftime-report={per-pass,per-pass-run} to control the pass timing aggregation 2020-12-08 10:13:19 -08:00
clang-tools-extra cppcoreguidelines Narrowing Conversions Check: detect narrowing conversions involving typedefs 2020-12-08 13:10:41 -05:00
compiler-rt [compiler-rt santizer] Use clock_gettime instead of timespec_get 2020-12-08 10:10:17 -08:00
debuginfo-tests Include BuiltinAttributes.h in llvm-prettyprinters/gdb/mlir-support.cpp 2020-12-04 15:57:05 -06:00
flang [flang] Implement derived type description table encoding 2020-12-08 10:26:58 -08:00
libc [libc] add tests to WrapperGen 2020-12-04 18:14:17 +00:00
libclc libclc: Use find_package to find Python 3 and require it 2020-10-01 22:31:33 +02:00
libcxx [libc++] [LWG3221] Add tests for wrapping operator+(year_month, months). 2020-12-08 18:08:04 +01:00
libcxxabi [libc++abi] Don't try calling __libcpp_aligned_free when aligned allocation is disabled 2020-12-01 17:45:14 -05:00
libunwind [libunwind] Multiple preprocessor fixes on PowerPC* 2020-11-23 19:07:21 -08:00
lld [lld-macho] Support parsing of bitcode within archives 2020-12-08 10:34:32 -08:00
lldb [lldb][import-std-module] Add a test for typedef'd std types 2020-12-08 13:36:13 +01:00
llvm [RISCV] Replace custom isel code for RISCVISD::READ_CYCLE_WIDE with isel pattern 2020-12-08 10:23:37 -08:00
mlir [mlir] Async: Add numWorkerThreads argument to createAsyncParallelForPass 2020-12-08 10:30:14 -08:00
openmp [OpenMP] NFC: comment adjusted 2020-12-07 19:50:14 +03:00
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][CodeGen] Remove use of ScalarEvolution. 2020-12-07 15:21:51 -06:00
pstl [pstl] Replace direct use of assert() with _PSTL_ASSERT 2020-11-02 18:35:54 -05:00
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
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.arclint PR46997: don't run clang-format on clang's testcases. 2020-08-04 17:53:25 -07:00
.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
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CONTRIBUTING.md
README.md Revert "This is a test commit" 2020-10-21 09:34:15 +08:00

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:

  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

    • 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.