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LLVM backend for 6502
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Evan Cheng 9568e5c3c3 Teach dag combine to match halfword byteswap patterns. 
1. (((x) & 0xFF00) >> 8) | (((x) & 0x00FF) << 8)
   => (bswap x) >> 16
2. ((x&0xff)<<8)|((x&0xff00)>>8)|((x&0xff000000)>>8)|((x&0x00ff0000)<<8))
   => (rotl (bswap x) 16)

This allows us to eliminate most of the def : Pat patterns for ARM rev16
revsh instructions. It catches many more cases for ARM and x86.

rdar://9609108


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133503 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-21 06:01:08 +00:00
autoconf build/configure: Add support for --with-extra-ld-options flag (to provide extra 2011-06-16 22:30:38 +00:00
bindings
cmake Added LLVM_BUILD_MODE to cmake so that lit supports tests with REQUIRES: {buildmode}. 2011-06-16 22:19:20 +00:00
docs Document nonlazybind. 2011-06-16 16:03:13 +00:00
examples Modify comment. 2011-06-09 20:11:46 +00:00
include Revert r133435 and r133449 to appease buildbots. 2011-06-21 02:09:03 +00:00
lib Teach dag combine to match halfword byteswap patterns. 2011-06-21 06:01:08 +00:00
projects
runtime Remove the LTO stuff from the profile_rt library's Makefile. 2011-06-15 04:56:13 +00:00
test Teach dag combine to match halfword byteswap patterns. 2011-06-21 06:01:08 +00:00
tools Revamp the "ConstantStruct::get" methods. Previously, these were scattered 2011-06-20 04:01:31 +00:00
unittests Revamp the "ConstantStruct::get" methods. Previously, these were scattered 2011-06-20 04:01:31 +00:00
utils Skip fields that don't exist in the Register class. 2011-06-20 20:56:05 +00:00
website
.gitignore
build-for-llvm-top.sh
CMakeLists.txt
configure Regenerate configure. 2011-06-16 22:30:41 +00:00
CREDITS.TXT
LICENSE.TXT Happy new year. 2011-06-12 15:26:54 +00:00
llvm.spec.in
Makefile Install libprofile_rt.dylib where it's more available for gcov support. 2011-06-10 21:47:14 +00:00
Makefile.common
Makefile.config.in build/configure: Add support for --with-extra-ld-options flag (to provide extra 2011-06-16 22:30:38 +00:00
Makefile.rules Don't force remove config.cache on reconfiguration. 2011-06-17 11:08:09 +00:00
ModuleInfo.txt
README.txt

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