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Chandler Carruth b636b69e73 [UB] Fix a nasty place where we would pass null pointers to memcpy. 
This happens to work, but is not guaranteed to work. Indeed, most memcpy
interfaces in Linux-land annotate these arguments as nonnull, and GCC
and LLVM both can and do optimized based upon that. When they do so,
they might legitimately have miscompiled code calling this routine with
two valid iterators, 'nullptr' and 'nullptr'. There was even code doing
precisely this because StringRef().begin() and StringRef().end() both
produce null pointers.

This was found by UBSan.

llvm-svn: 243927
2015-08-04 00:44:07 +00:00
autoconf Update the trunk version to 3.8.0svn. 2015-07-14 22:35:57 +00:00
bindings DI: Rewrite the DIBuilder local variable API 2015-07-31 17:55:53 +00:00
cmake Use a specified list of languages in cmake project() command. 2015-07-28 14:43:53 +00:00
docs Docs: s/Sanitiser/Sanitizer/ for consistency 2015-08-03 23:25:46 +00:00
examples DI: Rewrite the DIBuilder local variable API 2015-07-31 17:55:53 +00:00
include [UB] Fix a nasty place where we would pass null pointers to memcpy. 2015-08-04 00:44:07 +00:00
lib [AArch64] Vector FCOPYSIGN supports Custom-lowering: mark it as such. 2015-08-04 00:42:34 +00:00
projects build: make libunwind a proper project 2015-04-25 01:47:39 +00:00
resources In MSVC builds embed a VERSIONINFO resource in our exe and DLL files. 2015-06-12 15:58:29 +00:00
test [AArch64] Vector FCOPYSIGN supports Custom-lowering: mark it as such. 2015-08-04 00:42:34 +00:00
tools [llvm-objdump] Range-loopify. NFC intended. 2015-08-03 21:46:32 +00:00
unittests -Wdeprecated-clean: Fix cases of violating the rule of 5 in ways that are deprecated in C++11 2015-08-03 22:30:24 +00:00
utils [Release Script] Check for correct symlink name 2015-08-03 20:19:35 +00:00
.arcconfig
.clang-format
.clang-tidy
.gitignore Minor updates to gitignore so that symlinks are ignored in the projects dir. 2015-07-07 20:24:58 +00:00
CMakeLists.txt Use a specified list of languages in cmake project() command. 2015-07-28 14:43:53 +00:00
CODE_OWNERS.TXT [WebAssembly] Initial WebAssembly backend 2015-06-29 23:51:55 +00:00
configure Update the trunk version to 3.8.0svn. 2015-07-14 22:35:57 +00:00
CREDITS.TXT [WebAssembly] Initial WebAssembly backend 2015-06-29 23:51:55 +00:00
LICENSE.TXT
llvm.spec.in
LLVMBuild.txt
Makefile
Makefile.common
Makefile.config.in Disallow in-source builds (as we already do for the cmake build). 2015-07-01 18:09:21 +00:00
Makefile.rules
README.txt Revert test commit at revision 233535. 2015-03-30 12:39:03 +00:00

README.txt 

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.