forked from OSchip/llvm-project
274b2439f8
The multiply() implementation is very slow -- it performs six multiplications in double the bitwidth, which means that it will typically work on allocated APInts and bypass fast-path implementations. Add an additional implementation that doesn't try to produce anything better than a full range if overflow is possible. At least for the BasicAA use-case, we really don't care about more precise modeling of overflow behavior. The current use of multiply() is fine while the implementation is limited to a single index, but extending it to the multiple-index case makes the compile-time impact untenable. |
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| include | ||
| lib | ||
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| 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.