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MSVC 2013 requires the argument to __declspec(align()) to be an integer constant expression that doesn't involve any identifiers like sizeof. For GCC and Clang, LLVM_PTR_SIZE is equivalent to __SIZEOF_POINTER__, which dates back to GCC 4.6 and Clang 2010. If that's not available, we get sizeof(void*), which works with alignas() and __attribute__((aligned())). For MSVC, LLVM_PTR_SIZE is 4 or 8 depending on _WIN64. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@233929 91177308-0d34-0410-b5e6-96231b3b80d8
Low Level Virtual Machine (LLVM) ================================ 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're writing a package for LLVM, see docs/Packaging.rst for our suggestions.