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The _chkstk function is called by the compiler to probe the stack in an order consistent with Windows' expectations. However, it is possible to elide the call to _chkstk and manually adjust the stack pointer if we can prove that the allocation is fixed size and smaller than the probe size. This shrinks chrome.dll, chrome_child.dll and chrome.exe by a cummulative ~133 KB. Differential Revision: http://reviews.llvm.org/D17679 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@262370 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.