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Hal Finkel 282969ed36 Precompute SCEV pointer analysis prior to instruction fusion in BBVectorize. 
When both a load/store and its address computation are being vectorized, it can
happen that the address-computation vectorization destroys SCEV's ability
to analyize the relative pointer offsets. As a result (like with the aliasing
analysis info), we need to precompute the necessary information prior to
instruction fusing.

This was found during stress testing (running through the test suite with a very
low required chain length); unfortunately, I don't have a small test case.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159332 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-28 05:42:45 +00:00
autoconf Remove autoconf support for runtest and tclsh, some of the last vestigal 2012-06-27 23:53:41 +00:00
bindings [python] Add negative MemoryBuffer testcase 2012-03-22 11:23:52 +00:00
cmake LLVMProcessSources.cmake: [MSVC] Don't add "PROPERTIES HEADER_FILE_ONLY" to *.def. 2012-06-24 03:50:58 +00:00
docs Sphinxify the exception handling doc. 2012-06-27 07:20:57 +00:00
examples Remove trailing whitespaces 2012-06-21 22:26:01 +00:00
include Allow BBVectorize to form non-2^n-length vectors. 2012-06-28 05:42:42 +00:00
lib Precompute SCEV pointer analysis prior to instruction fusion in BBVectorize. 2012-06-28 05:42:45 +00:00
projects Remove 'check-dg', a wrapper around 'check-local-dg' which was just 2012-06-28 00:03:13 +00:00
runtime Free the allocated filename. Found by clang static analyzer. 2012-06-15 09:11:47 +00:00
test Allow BBVectorize to form non-2^n-length vectors. 2012-06-28 05:42:42 +00:00
tools Move lib/Analysis/DebugInfo.cpp to lib/VMCore/DebugInfo.cpp and 2012-06-28 00:05:13 +00:00
unittests fix a off-by-one bug in intersectWith(), and add a bunch of tests 2012-06-28 00:59:33 +00:00
utils Silence unused variable warning. 2012-06-28 00:41:11 +00:00
.gitignore Add tools/lld to .gitignore. 2012-05-02 21:25:32 +00:00
CMakeLists.txt New test tool: obj2yaml 2012-06-19 18:02:35 +00:00
configure Remove the PTX back-end and all of its artifacts (triple, etc.) 2012-05-24 21:38:21 +00:00
CREDITS.TXT Alphabetize. 2012-06-19 23:47:58 +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 Do not install llvm-config-host for cross-builds of clang. rdar://11317847 2012-05-09 00:07:02 +00:00
Makefile.common [docs] Remove unsupported references to ExtraSource variable. 2012-05-15 21:32:27 +00:00
Makefile.config.in Remove autoconf support for runtest and tclsh, some of the last vestigal 2012-06-27 23:53:41 +00:00
Makefile.rules Remove 'check-dg', a wrapper around 'check-local-dg' which was just 2012-06-28 00:03:13 +00:00
README.txt Testing commit access 2012-05-24 14:20:13 +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.