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Jean Perier c5729f2e63 [flang] Set default form if unspecified at end of OPEN statement 
The standard specifies that the form must be set to a default at the
end of an open statement (C.7.4 point 2) where it was not specified.
Only in the case of a pre-connected unit can the form be deferred
until the first data transfer statement.

Set back the default form setting in OpenStatementState::EndIoStatement
that had been removed when deferring the pre-connected unit from setting
in 199a623ebf.

Also return "UNDEFINED" instead of "UNKNOWN" to the FORM inquiry when the
form was not yet specified as defined in 12.10.2.12.

Related test: syntax 215a216.

Differential Revision: https://reviews.llvm.org/D108990
2021-09-01 08:40:43 +02:00
.github
clang [Test][Time profiler] Fix test time checking 2021-09-01 09:11:36 +03:00
clang-tools-extra [clang-tidy] Add bugprone-suspicious-memory-comparison check 2021-08-26 09:23:37 +02:00
compiler-rt [DFSan][NFC] Fix comment formatting. 2021-08-31 15:35:08 -07:00
cross-project-tests [cross-project-tests] Add/update check-* targets for cross-project-tests 2021-06-28 11:31:41 +01:00
flang [flang] Set default form if unspecified at end of OPEN statement 2021-09-01 08:40:43 +02:00
libc [libc][nfc][obvious] fix typos in FPUtil 2021-08-30 22:39:02 +00:00
libclc libclc: Fix rounding during type conversion 2021-08-19 22:24:19 -07:00
libcxx [libc++][NFC] Remove redundant friend declaration for operator== 2021-08-31 17:02:58 -04:00
libcxxabi [libc++abi] Avoid the warning: "__EXCEPTIONS" is not defined, evaluates to 0 [-Werror=undef] 2021-08-30 13:34:28 -04:00
libunwind [libunwind] Don't include cet.h/immintrin.h unconditionally 2021-08-26 11:37:07 +02:00
lld [LLD][COFF] Clean paths in PDB even when /pdbsourcepath is omitted 2021-08-31 19:05:10 -04:00
lldb [lldb] [gdb-remote client] Remove breakpoints throughout vfork 2021-09-01 08:16:12 +02:00
llvm [SLP][RISCV] Implement unsigned getMinVectorRegisterBitWidth() for RISCV 2021-09-01 14:25:15 +08:00
mlir [mlir][sparse] Rename the public SparseTensorStorage::asCOO to toCOO 2021-08-31 15:44:34 -07:00
openmp [OpenMP][AMDGPU] XFAIL test where kernels call printf 2021-08-31 22:11:28 -04:00
parallel-libs
polly [Polly] Use subtyped isl::schedule_nodes for ScheduleTreeVisitor. NFC. 2021-08-31 20:54:12 -05:00
pstl [libc++] Remove test-suite annotations for unsupported Clang versions 2021-08-20 15:05:13 -04:00
runtimes
utils [mlir] Add an interface to allow operations to specify how they can be tiled. 2021-08-30 16:31:18 -07:00
.arcconfig
.arclint
.clang-format
.clang-tidy .clang-tidy: Disable misc-no-recursion in general/across the monorepo 2021-06-08 08:31:33 -07:00
.git-blame-ignore-revs [lldb] Add 9494c510af to .git-blame-ignore-revs 2021-06-10 09:29:59 -07:00
.gitignore
.mailmap Simplify a .mailmap entry 2021-08-18 09:16:16 -04:00
CONTRIBUTING.md
README.md [RFC][debuginfo-test] Rename debug-info lit tests for general purposes 2021-06-28 11:31:40 +01:00
SECURITY.md

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, libcxx, libcxxabi, libunwind, lldb, compiler-rt, lld, polly, or cross-project-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.