forked from OSchip/llvm-project
0f8c626723
A new set of overloaded functions named getOrInsertLibFunc() are now supposed to be used instead of getOrInsertFunction() when building a libcall from within an LLVM optimizer(). The idea is that this new function also makes sure that any mandatory argument attributes are added to the function prototype (after calling getOrInsertFunction()). inferLibFuncAttributes() is renamed to inferNonMandatoryLibFuncAttrs() as it only adds attributes that are not necessary for correctness but merely helping with later optimizations. Generally, the front end is responsible for building a correct function prototype with the needed argument attributes. If the middle end however is the one creating the call, e.g. when replacing one libcall with another, it then must take this responsibility. This continues the work of properly handling argument extension if required by the target ABI when building a lib call. getOrInsertLibFunc() now does this for all libcalls currently built by any LLVM optimizer. It is expected that when in the future a new optimization builds a new libcall with an integer argument it is to be added to getOrInsertLibFunc() with the proper handling. Note that not all targets have it in their ABI to sign/zero extend integer arguments to the full register width, but this will be done selectively as determined by getExtAttrForI32Param(). Review: Eli Friedman, Nikita Popov, Dávid Bolvanský Differential Revision: https://reviews.llvm.org/D123198 |
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| benchmarks | ||
| bindings | ||
| cmake | ||
| docs | ||
| examples | ||
| include | ||
| lib | ||
| projects | ||
| resources | ||
| runtimes | ||
| test | ||
| tools | ||
| unittests | ||
| utils | ||
| .clang-format | ||
| .clang-tidy | ||
| .gitattributes | ||
| .gitignore | ||
| CMakeLists.txt | ||
| CODE_OWNERS.TXT | ||
| CREDITS.TXT | ||
| LICENSE.TXT | ||
| README.txt | ||
| RELEASE_TESTERS.TXT | ||
| configure | ||
| llvm.spec.in | ||
README.txt
The LLVM Compiler Infrastructure ================================ This directory and its subdirectories contain source code for LLVM, a toolkit for the construction of highly optimized compilers, optimizers, and runtime environments. LLVM is open source software. You may freely distribute it under the terms of the license agreement found in LICENSE.txt. Please see the documentation provided in docs/ for further assistance with LLVM, and in particular docs/GettingStarted.rst for getting started with LLVM and docs/README.txt for an overview of LLVM's documentation setup. If you are writing a package for LLVM, see docs/Packaging.rst for our suggestions.