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Benjamin Kramer 6a4976d3e0 JumpThreading: Turn a select instruction into branching if it allows to thread one half of the select. 
This is a common pattern coming out of simplifycfg generating gross code.

a:                                       ; preds = %entry
  %sel = select i1 %cmp1, double %add, double 0.000000e+00
  br label %b

b:
  %cond5 = phi double [ %sel, %a ], [ %sub, %entry ]
  %cmp6 = fcmp oeq double %cond5, 0.000000e+00
  br i1 %cmp6, label %if.then, label %if.end

becomes

a:
  br i1 %cmp1, label %b, label %if.then

b:
  %cond5 = phi double [ %sub, %entry ], [ %add, %a ]
  %cmp6 = fcmp oeq double %cond5, 0.000000e+00
  br i1 %cmp6, label %if.then, label %if.end

Skipping block b completely if possible.

llvm-svn: 187880
 		2013-08-07 10:29:38 +00:00
..
autoconf Add support for linking against a curses library when available and 2013-08-07 08:47:36 +00:00
bindings We're in 3.4 land now. 2013-05-07 20:31:28 +00:00
cmake Add support for linking against a curses library when available and 2013-08-07 08:47:36 +00:00
docs [LangRef] Alphabetize function attribute listing. 2013-08-06 19:34:37 +00:00
examples ExceptionDemo.cpp: Tweak a @param. [-Wdocumentation] 2013-07-29 11:03:50 +00:00
include Commit a no-op change to StringRef to (hopefully) trigger build bots. 2013-08-07 09:52:34 +00:00
lib JumpThreading: Turn a select instruction into branching if it allows to thread one half of the select. 2013-08-07 10:29:38 +00:00
projects Build with the $RDYNAMIC flag on Darwin as well as other platforms. 2013-08-04 22:06:11 +00:00
runtime Use @rpath for libraries rather than @executable_path on OSX. 2013-08-02 01:51:52 +00:00
test JumpThreading: Turn a select instruction into branching if it allows to thread one half of the select. 2013-08-07 10:29:38 +00:00
tools Change public functions of LTOCodeGenerator from ret-false-on-succ to ret-true-on-succ. 2013-08-07 05:19:23 +00:00
unittests Disabled columnWidth test for OSX, need someone with Mac to deal with this effectively. 2013-08-07 02:08:31 +00:00
utils [lit] Use py2&3 compatible exec() syntax. 2013-08-07 03:25:28 +00:00
.arcconfig
…
.gitignore
…
CMakeLists.txt Add support for linking against a curses library when available and 2013-08-07 08:47:36 +00:00
CODE_OWNERS.TXT Add more owners to CODE_OWNERS.TXT (Kostya Serebryany: AddressSanitizer and ThreadSanitizer; Evgeniy Stepanov: MemorySanitizer) 2013-06-27 08:47:12 +00:00
CREDITS.TXT Identify me on IRC. 2013-06-18 22:09:36 +00:00
LICENSE.TXT Be more specific and capitalize filenames. 2013-05-21 21:22:34 +00:00
LLVMBuild.txt
…
Makefile Fix regular expression used by 'make update' to only look for 'I' and '?' at the start of svn info results and to check for spaces after 'I' instead of just after '?'. 2013-07-03 14:48:37 +00:00
Makefile.common
…
Makefile.config.in Add an autoconf option for turning on -gsplit-dwarf by default 2013-06-25 01:12:25 +00:00
Makefile.rules Remove oddly named libraries with "make uninstall-local" 2013-08-06 12:50:45 +00:00
README.txt test 2013-04-17 05:34:03 +00:00
configure Add support for linking against a curses library when available and 2013-08-07 08:47:36 +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 documentation provided in docs/ for further
assistance with LLVM, and in particular docs/GettingStarted.rst for getting
started with LLVM and docs/README.txt for an overview of LLVM's
documentation setup.

If you're writing a package for LLVM, see docs/Packaging.rst for our
suggestions.