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LLVM backend for 6502
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39ad568c62
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Manman Ren 39ad568c62 X86: enable CSE between CMP and SUB 
We perform the following:
1> Use SUB instead of CMP for i8,i16,i32 and i64 in ISel lowering.
2> Modify MachineCSE to correctly handle implicit defs.
3> Convert SUB back to CMP if possible at peephole.

Removed pattern matching of (a>b) ? (a-b):0 and like, since they are handled
by peephole now.

rdar://11873276


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161462 91177308-0d34-0410-b5e6-96231b3b80d8
2012-08-08 00:51:41 +00:00
autoconf Add support for the OpenBSD for Bitrig. 2012-08-06 20:52:18 +00:00
bindings Remove tabs. 2012-07-19 00:23:13 +00:00
cmake [CMake] add_lit_target: Remove comments about add_dependencies. It is not a bug in cmake that add_custom_target(DEPENDS) would not accept targets but file-level dependencies. 2012-08-04 02:14:44 +00:00
docs Add yaml2obj. A utility to convert YAML to binaries. 2012-08-02 19:16:56 +00:00
examples Move llvm/Support/IRBuilder.h -> llvm/IRBuilder.h 2012-06-29 12:38:19 +00:00
include Fix a quadratic algorithm in MachineBranchProbabilityInfo. 2012-08-08 00:20:37 +00:00
lib X86: enable CSE between CMP and SUB 2012-08-08 00:51:41 +00:00
projects Fix a typo (the the => the) 2012-07-23 08:51:15 +00:00
runtime Free the allocated filename. Found by clang static analyzer. 2012-06-15 09:11:47 +00:00
test X86: enable CSE between CMP and SUB 2012-08-08 00:51:41 +00:00
tools Tidy up a bit. 2012-08-07 17:53:14 +00:00
unittests Update cmake build. 2012-08-04 09:52:39 +00:00
utils Remove extraneous ';'. 2012-08-04 10:31:40 +00:00
.gitignore Add tools/lld to .gitignore. 2012-05-02 21:25:32 +00:00
CMakeLists.txt Add yaml2obj. A utility to convert YAML to binaries. 2012-08-02 19:16:56 +00:00
CODE_OWNERS.TXT Add the list of code owners to the top level of the LLVM source tree to 2012-07-26 08:04:09 +00:00
configure Add support for the OpenBSD for Bitrig. 2012-08-06 20:52:18 +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 Add a configure flag for enabling -Werror on the command line 2012-08-03 19:58:20 +00:00
Makefile.rules Add a configure flag for enabling -Werror on the command line 2012-08-03 19:58:20 +00:00
README.txt test commit 2012-07-11 17:34:12 +00:00

README.txt 

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

This directory and its subdirectories contain source code for the Low Level
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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
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If you're writing a package for LLVM, see docs/Packaging.html for our
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