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LLVM backend for 6502
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26c5663283
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Owen Anderson 26c5663283 Invert and-of-or into or-of-and when doing so would allow us to clear bits of the and's mask. 
This can result in increased opportunities for store narrowing in code generation.  Update a number of
tests for this change.  This fixes <rdar://problem/8285027>.

Additionally, because this inverts the order of ors and ands, some patterns for optimizing or-of-and-of-or
no longer fire in instances where they did originally.  Add a simple transform which recaptures most of these
opportunities: if we have an or-of-constant-or and have failed to fold away the inner or, commute the order 
of the two ors, to give the non-constant or a chance for simplification instead.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@113679 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-11 05:48:06 +00:00
autoconf Create PTX backend. Patch by Che-Liang Chiou! 2010-09-07 18:14:24 +00:00
bindings Add X86 MMX type to bitcode and Type. 2010-09-10 20:55:01 +00:00
cmake CMake: Fix mingw32 build. 2010-09-11 02:13:39 +00:00
docs Add documentation for llvm-diff. 2010-09-07 23:10:21 +00:00
examples CMake: Get rid of LLVMLibDeps.cmake and export the libraries normally. 2010-09-10 21:14:25 +00:00
include Rename ConvertToSetZeroFlag to something more general. 2010-09-11 00:13:50 +00:00
lib Invert and-of-or into or-of-and when doing so would allow us to clear bits of the and's mask. 2010-09-11 05:48:06 +00:00
projects projects: Don't try to build libcxx if one happens to have it checked out into 2010-09-09 15:49:32 +00:00
runtime Rename 'libprofile/exported_symbols.lst' to 'libprofile/libprofile.exports'. 2010-09-03 15:42:45 +00:00
test Invert and-of-or into or-of-and when doing so would allow us to clear bits of the and's mask. 2010-09-11 05:48:06 +00:00
tools CMake: Get rid of LLVMLibDeps.cmake and export the libraries normally. 2010-09-10 21:14:25 +00:00
unittests Add a new isSignWrappedSet() method to ConstantRange. 2010-09-06 23:52:49 +00:00
utils Add x86mmx to TableGen. 2010-09-11 00:16:46 +00:00
website
build-for-llvm-top.sh
CMakeLists.txt CMake: Fix mingw32 build. 2010-09-11 02:13:39 +00:00
configure Update configure for change to autoconf/configure.ac to add PTX backend. 2010-09-07 18:14:42 +00:00
CREDITS.TXT Flesh out the list of things I've worked on. 2010-08-29 04:22:35 +00:00
LICENSE.TXT
llvm.spec.in
Makefile llvmc: remove dynamic plugins. 2010-08-15 07:07:12 +00:00
Makefile.common
Makefile.config.in Make the makefiles go much faster by using the realpath 2010-08-03 22:53:22 +00:00
Makefile.rules Makefile.rules: LOADABLE_MODULE/Win32: "all" components may be linked 2010-09-10 06:27:02 +00:00
ModuleInfo.txt
README.txt (Hopefully) One last test. 2010-07-27 00:04:55 +00:00

README.txt 

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

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