mirror of
https://github.com/RPCSX/llvm.git
synced 2025-02-23 14:30:50 +00:00
ace061bc34
32-bit X86 EH on Windows utilizes a stack of registration nodes allocated and deallocated on entry/exit. A registration node contains a bunch of EH personality specific information like which try-state we are currently in. Because a setjmp target allows control flow from arbitrary program points, there is no way to ensure that the try-state we are in is correctly updated once we transfer control. MSVC compatible compilers, like MSVC and ICC, utilize runtime helpers to reinitialize the try-state when a longjmp occurs. This is implemented by adding additional arguments to _setjmp3: the desired try-state and a helper routine to update the try-state. Differential Revision: http://reviews.llvm.org/D17721 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@262241 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 are writing a package for LLVM, see docs/Packaging.rst for our suggestions.