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Jakob Stoklund Olesen 6d4ef2b65f Consider ad hoc aliasing when building RegUnits. Register units can be used to compute if two registers overlap: A overlaps B iff units(A) intersects units(B). With this change, the above holds true even on targets that use ad hoc aliasing (currently only ARM). This means that register units can be used to implement regsOverlap() more efficiently, and the register allocator can use the concept to model interference. When there is no ad hoc aliasing, the register units correspond to the maximal cliques in the register overlap graph. This is optimal, no other register unit assignment can have fewer units. With ad hoc aliasing, weird things are possible, and we don't try too hard to compute the maximal cliques. The current approach is always correct, and it works very well (probably optimally) as long as the ad hoc aliasing doesn't have cliques larger than pairs. It seems unlikely that any target would need more. llvm-svn: 156763		2012-05-14 15:20:39 +00:00
autoconf	Revert r156393, "[tests] Remove some remaining DejaGNU related cruft.", this	2012-05-08 18:26:07 +00:00
bindings	[python] Add negative MemoryBuffer testcase	2012-03-22 11:23:52 +00:00
cmake	Adding -fcolor-diagnostics is causing problem to users that parse the build	2012-05-08 18:11:06 +00:00
docs	Formatting changes. Remove the '...' placeholders.	2012-05-14 08:11:53 +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	Add BitVector::anyCommon().	2012-05-14 15:01:19 +00:00
lib	SwitchInst cosmetics: renamed "Hash" method to "hash"	2012-05-14 08:26:31 +00:00
projects	Update all outdated autoconf files in the sample project.	2012-05-05 15:02:39 +00:00
runtime	Switch to c-style comments in a C file.	2012-04-27 19:30:29 +00:00
test	Add support for the .rept directive. Patch by Vladmir Sorokin. I added support	2012-05-12 16:31:10 +00:00
tools	Fix a use after free when the streamer is destroyed. Fixes pr12622.	2012-05-11 03:42:13 +00:00
unittests	Add BitVector::anyCommon().	2012-05-14 15:01:19 +00:00
utils	Consider ad hoc aliasing when building RegUnits.	2012-05-14 15:20:39 +00:00
.gitignore	Add tools/lld to .gitignore.	2012-05-02 21:25:32 +00:00
CMakeLists.txt	Make it possible to switch off solution folders. VS Express does not support	2012-05-09 15:10:54 +00:00
configure	Revert r156393, "[tests] Remove some remaining DejaGNU related cruft.", this	2012-05-08 18:26:07 +00:00
CREDITS.TXT	Update the documentation of CellSPU, in case it gets removed in 3.1.	2012-04-29 20:00:55 +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	Removed trailing whitespace from Makefiles.	2009-01-09 16:44:42 +00:00
Makefile.config.in	Make IntelJITEvents and OProfileJIT as optional libraries and add	2012-05-07 19:38:40 +00:00
Makefile.rules	Make IntelJITEvents and OProfileJIT as optional libraries and add	2012-05-07 19:38:40 +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.