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Chandler Carruth eb9c5df516 Fix a crash on valid (if UB) bitcode that is produced for some global 
constants in C++11 mode. I have no idea why it required such particular
circumstances to get here, the code seems clearly to rely upon unchecked
assumptions.

Specifically, when we decide to form an index into a struct type, we may
have gone through (at least one) zero-length array indexing round, which
would have left the offset un-adjusted, and thus not necessarily valid
for use when indexing the struct type.

This is just an canonicalization step, so the correct thing is to refuse
to canonicalize nonsensical GEPs of this form. Implemented, and test
case added.

Fixes PR12642. Pair debugged and coded with Richard Smith. =] I credit
him with most of the debugging, and preventing me from writing the wrong
code.

llvm-svn: 155466
2012-04-24 18:42:47 +00:00
autoconf Kick off 3.2 cycle for LLVM trunk. 2012-04-20 18:15:07 +00:00
bindings [python] Add negative MemoryBuffer testcase 2012-03-22 11:23:52 +00:00
cmake CMake: Enable LLVM_COMPILER_JOBS on all MS IDEs. We don't support older environments than VS9. 2012-04-21 14:51:02 +00:00
docs [docs] Update version number. I suggest that at some point we make the 2012-04-20 19:28:40 +00:00
examples Remove llvm-ld and llvm-stub (which is only used by llvm-ld). 2012-04-19 19:27:54 +00:00
include Related to PR1255. Let's begin. I'll commit classes that corresponds to our latest PR1255 discussion posts in llvm-commits. 2012-04-24 18:31:10 +00:00
lib Fix a crash on valid (if UB) bitcode that is produced for some global 2012-04-24 18:42:47 +00:00
projects Remove llvm-ld and llvm-stub (which is only used by llvm-ld). 2012-04-19 19:27:54 +00:00
runtime Use the correct filename for the error message. 2012-03-28 02:39:06 +00:00
test Fix a crash on valid (if UB) bitcode that is produced for some global 2012-04-24 18:42:47 +00:00
tools Remove llvm-ld and llvm-stub (which is only used by llvm-ld). 2012-04-19 19:27:54 +00:00
unittests SparseSet: Add support for key-derived indexes and arbitrary key types. 2012-04-20 20:05:28 +00:00
utils Remove 'XXXRegisterClass' from tablegen output. Targets should use '&XXXRegClass' instead. 2012-04-21 01:49:25 +00:00
.gitignore [docs] Stub out structure for Sphinx-based docs. 2012-04-19 16:31:19 +00:00
CMakeLists.txt CMake: Prune redundant LLVM_COMPILER_JOBS from llvm/CMakeLists.txt. HandleLLVMOptions.cmake has it. 2012-04-21 14:50:56 +00:00
configure Kick off 3.2 cycle for LLVM trunk. 2012-04-20 18:15:07 +00:00
CREDITS.TXT Update woefully stale credits entry. Everything listed there had been 2012-04-17 01:19:37 +00:00
LICENSE.TXT Add YAML parser to Support. 2012-04-03 23:09:22 +00:00
llvm.spec.in Tidy up. s/Low Level Virtual Machine/LLVM/. 2012-01-25 22:00:23 +00:00
LLVMBuild.txt LLVMBuild: Introduce a common section which currently has a list of the 2011-12-12 22:45:54 +00:00
Makefile When cross compiling, install a host version of llvm-config. <rdar://11187889> 2012-04-19 23:19:55 +00:00
Makefile.common Removed trailing whitespace from Makefiles. 2009-01-09 16:44:42 +00:00
Makefile.config.in Add profiling support for Intel Parallel Amplifier XE (VTune) for JITted code in LLVM. 2012-03-13 08:33:15 +00:00
Makefile.rules Remove llvm-ld and llvm-stub (which is only used by llvm-ld). 2012-04-19 19:27:54 +00:00
README.txt test commit 2012-03-20 13:12:38 +00:00

README.txt 

Low Level Virtual Machine (LLVM)
================================

This directory and its subdirectories contain source code for the Low Level
Virtual Machine, 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 HTML documentation provided in docs/index.html for further
assistance with LLVM.

If you're writing a package for LLVM, see docs/Packaging.html for our
suggestions.