cd05ade13a
`-fvisibility-from-dllstorageclass` allows for overriding the visibility of globals from their DLL storage class. The visibility to apply can be customised for the different classes of globals via a set of dependent options that specify the mapping values: - `-fvisibility-dllexport=<value>` - `-fvisibility-nodllstorageclass=<value>` - `-fvisibility-externs-dllimport=<value>` - `-fvisibility-externs-nodllstorageclass=<value>` Currently, one of the existing LLVM visibilities, `hidden`, `protected`, `default`, can be used as a mapping value. This change adds a new mapping value: `keep`, which specifies that the visibility should not be overridden for that class of globals. The behaviour of `-fvisibility-from-dllstorageclass` is otherwise unchanged and existing uses of this set of options will be unaffected. The background to this change is that currently the PS4 and PS5 compilers effectively ignore visibility - dllimport/export is the supported method for export control in C/C++ source code. Now, we would like to support visibility attributes and options in our frontend, in addition to dllimport/export. To support this, we will override the visibility of globals with explicit dllimport/export annotations but use the `keep` setting for globals which do not have an explicit dllimport/export. There are also some minor improvements to the existing options: - Make the `LANGOPS` `BENIGN` as they don't involve the AST. - Correct/clarify the help text for the options. |
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| .github | ||
| bolt | ||
| clang | ||
| clang-tools-extra | ||
| cmake | ||
| compiler-rt | ||
| cross-project-tests | ||
| flang | ||
| libc | ||
| libclc | ||
| libcxx | ||
| libcxxabi | ||
| libunwind | ||
| lld | ||
| lldb | ||
| llvm | ||
| llvm-libgcc | ||
| mlir | ||
| openmp | ||
| polly | ||
| pstl | ||
| runtimes | ||
| third-party | ||
| utils | ||
| .arcconfig | ||
| .arclint | ||
| .clang-format | ||
| .clang-tidy | ||
| .git-blame-ignore-revs | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| CODE_OF_CONDUCT.md | ||
| CONTRIBUTING.md | ||
| LICENSE.TXT | ||
| README.md | ||
| SECURITY.md | ||
The LLVM Compiler Infrastructure
Welcome to the LLVM project!
This repository contains the source code for LLVM, a toolkit for the construction of highly optimized compilers, optimizers, and run-time environments.
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.
C-like languages use the Clang frontend. 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
Consult the Getting Started with LLVM page for information on building and running LLVM.
For information on how to contribute to the LLVM project, please take a look at the Contributing to LLVM guide.
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