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LLVM backend for 6502
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Andrea Di Biagio 2ce3ac8dd8 Teach DAGCombiner how to canonicalize dags according to the rule 
(shl (zext (shr A, X)), X) => (zext (shl (shr A, X), X)).

The rule only triggers when there are no other uses of the
zext to avoid materializing more instructions.

This helps the DAGCombiner understand that the shl/shr
sequence can then be converted into an and instruction.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@191393 91177308-0d34-0410-b5e6-96231b3b80d8
2013-09-25 19:01:01 +00:00
autoconf Remove error output from configure if CFLAGS is set (r174313). 2013-09-24 11:38:45 +00:00
bindings [python-bindings] Added support for getting/setting operands of values and getting the number of operands of a value. 2013-09-11 01:38:12 +00:00
cmake [CMake] Hack GetSVN.cmake to handle unusual terminals. 2013-09-16 21:38:01 +00:00
docs Add a paragraph on prefix data layout. 2013-09-23 20:14:21 +00:00
examples
include Mark the x86 machine model as incomplete. PR17367. 2013-09-25 18:14:12 +00:00
lib Teach DAGCombiner how to canonicalize dags according to the rule 2013-09-25 19:01:01 +00:00
projects
runtime Bring back the build of libprofile_rt on Sparc. It is now working correctly. See: 2013-09-08 09:15:09 +00:00
test Teach DAGCombiner how to canonicalize dags according to the rule 2013-09-25 19:01:01 +00:00
tools Move LTO support library to a component, allowing it to be tested 2013-09-24 23:52:22 +00:00
unittests Fixed typo in CreateProcessTrailingSlash test 2013-09-20 18:21:59 +00:00
utils Mark the x86 machine model as incomplete. PR17367. 2013-09-25 18:14:12 +00:00
.arcconfig
.clang-format Add a clang-format file so that the tool can automatically detect the 2013-09-02 07:19:04 +00:00
.gitignore
CMakeLists.txt Set the minimal stack size with msvc when using cmake >= 2.8.11. 2013-09-25 14:06:55 +00:00
CODE_OWNERS.TXT
configure Remove error output from configure if CFLAGS is set (r174313). 2013-09-24 11:38:45 +00:00
CREDITS.TXT
LICENSE.TXT
llvm.spec.in
LLVMBuild.txt
Makefile
Makefile.common
Makefile.config.in
Makefile.rules
README.txt

README.txt 

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