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Dan Gohman 74feef261a Define patterns for shld and shrd that match immediate 
shift counts, and patterns that match dynamic shift counts
when the subtract is obscured by a truncate node.

Add DAGCombiner support for recognizing rotate patterns
when the shift counts are defined by truncate nodes.

Fix and simplify the code for commuting shld and shrd
instructions to work even when the given instruction doesn't
have a parent, and when the caller needs a new instruction.

These changes allow LLVM to use the shld, shrd, rol, and ror
instructions on x86 to replace equivalent code using two
shifts and an or in many more cases.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57662 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-17 01:23:35 +00:00
autoconf Fix configure issue where configure 2008-10-07 22:21:03 +00:00
bindings PR2731: C and Ocaml bindings for setTailCall and isTailCall. 2008-08-30 16:34:54 +00:00
cmake CMake: Builds all targets. 2008-09-26 04:40:32 +00:00
docs Remove naming Tilmann for generics. 2008-10-15 20:25:04 +00:00
examples CMake: Builds all examples. Corrected name of CBackend target. 2008-09-26 19:48:03 +00:00
include Trim #includes. 2008-10-16 20:18:31 +00:00
lib Define patterns for shld and shrd that match immediate 2008-10-17 01:23:35 +00:00
projects Add "sample" documentation to sample project. 2008-09-15 05:31:29 +00:00
runtime Fixing the stack walker. 2008-01-24 05:16:36 +00:00
test Define patterns for shld and shrd that match immediate 2008-10-17 01:23:35 +00:00
tools Re-apply Makefile changes. Fix build with srcdir != objdir. 2008-10-16 14:02:29 +00:00
utils Add support for having multiple predicates on a TreePatternNode. 2008-10-15 06:17:21 +00:00
website Prepare for "core" website. 2007-08-03 05:43:35 +00:00
win32 update win32 project file, patch provided by OvermindDL1 on llvmdev. 2008-10-11 22:14:59 +00:00
Xcode Remove Stacker.html from Xcode project. 2008-10-14 23:23:59 +00:00
build-for-llvm-top.sh Allow the configure options to be set according to the llvm-top options. 2007-08-31 19:53:42 +00:00
CMakeLists.txt CMake: Builds all targets. 2008-09-26 04:40:32 +00:00
configure Fix configure issue where configure 2008-10-07 22:21:03 +00:00
CREDITS.TXT Add another description to my entry. 2008-08-28 23:16:37 +00:00
LICENSE.TXT llvmc doesn't exist anymore, and llvmc2 doesn't have a special license file. 2008-06-20 20:05:57 +00:00
llvm.spec.in * llvm.spec.in: update blurb 2007-07-13 09:48:29 +00:00
Makefile Add support for Canadian Cross builds where the host executables are not 2008-10-02 22:56:44 +00:00
Makefile.common remove attributions from the rest of the llvm makefiles. 2007-12-29 20:11:13 +00:00
Makefile.config.in Add support for Canadian Cross builds where the host executables are not 2008-10-02 22:56:44 +00:00
Makefile.rules Another dependency fix, prevent ObjDir from having trailing slash. 2008-10-03 21:24:52 +00:00
ModuleInfo.txt Update to include clean and install commands. 2007-07-20 20:54:41 +00:00
README.txt Remove extra lines 2008-07-28 20:50:25 +00:00

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.