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Evan Cheng 104dbb0fd1 For x86, canonicalize max 
(x > y) ? x : y
=>
(x >= y) ? x : y

So for something like
(x - y) > 0 : (x - y) ? 0
It will be
(x - y) >= 0 : (x - y) ? 0

This makes is possible to test sign-bit and eliminate a comparison against
zero. e.g.
subl   %esi, %edi
testl  %edi, %edi
movl   $0, %eax
cmovgl %edi, %eax
=>
xorl   %eax, %eax
subl   %esi, $edi
cmovsl %eax, %edi

rdar://10633221

llvm-svn: 147512
 		2012-01-04 01:41:39 +00:00
..
autoconf Happy new year 2012! 2012-01-01 08:16:56 +00:00
bindings Update OCaml bindings for the new half float type. 2011-12-28 18:51:08 +00:00
cmake Use 'check_symbol_exists' instead of 'check_function_exists' for finding isatty. This change allows Xcode generated projects to have HAVE_ISATTY to be properly defined. 2011-12-23 01:31:45 +00:00
docs Fix typo. 2012-01-03 18:38:37 +00:00
examples LLVMBuild: Remove trailing newline, which irked me. 2011-12-12 19:48:00 +00:00
include generalize LLVMContext::emitError to take a twine instead of a StringRef. 2012-01-03 23:47:05 +00:00
lib For x86, canonicalize max 2012-01-04 01:41:39 +00:00
projects Hexagon backend support 2011-12-12 21:14:40 +00:00
runtime LLVMBuild: Remove trailing newline, which irked me. 2011-12-12 19:48:00 +00:00
test For x86, canonicalize max 2012-01-04 01:41:39 +00:00
tools Remove extraneous ".get()->" which is just "->". No functionality change. 2011-12-30 19:17:23 +00:00
unittests Undo the hack in r147427 and move this unittest to a better home. This 2012-01-02 09:19:48 +00:00
utils Don't use enums larger than 1 << 31 for target features. 2012-01-03 23:04:28 +00:00
.gitignore git: Add tools/lldb to the ignore list. 2011-11-10 22:55:50 +00:00
CMakeLists.txt capitalize project name, reference bugzilla 2011-12-18 18:50:16 +00:00
CREDITS.TXT CREDITS.TXT: Add a line. (test commit) 2011-10-29 23:42:14 +00:00
LICENSE.TXT Happy new year 2012! 2012-01-01 08:16:56 +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 llvm-config: Replace with C++ version (was llvm-config-2). 2011-12-01 20:18:09 +00:00
Makefile.common
…
Makefile.config.in capitalize project name, reference bugzilla 2011-12-18 18:50:16 +00:00
Makefile.rules PR11642 has been fixed, enable -fvisibility-inlines-hidden everywhere. 2011-12-27 21:37:11 +00:00
README.txt Undo test commit 2011-11-22 20:05:48 +00:00
configure Happy new year 2012! 2012-01-01 08:16:56 +00:00
llvm.spec.in
…

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.