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Chris Lattner e562e9bdb0 rewrite the code used to construct pruned SSA form with the IDF method. 
In the old way, we computed and inserted phi nodes for the whole IDF of 
the definitions of the alloca, then computed which ones were dead and
removed them.

In the new method, we first compute the region where the value is live,
and use that information to only insert phi nodes that are live.  This
eliminates the need to compute liveness later, and stops the algorithm
from inserting a bunch of phis which it then later removes.

This speeds up the testcase in PR1432 from 2.00s to 0.15s (14x) in a
release build and 6.84s->0.50s (14x) in a debug build.

llvm-svn: 40825
2007-08-04 22:50:14 +00:00
autoconf Add detection of __dso_handle presence during configure. Use this information in the 2007-07-30 20:02:02 +00:00
docs This is the patch to provide clean intrinsic function overloading support in LLVM. It cleans up the intrinsic definitions and generally smooths the process for more complicated intrinsic writing. It will be used by the upcoming atomic intrinsics as well as vector and float intrinsics in the future. 2007-08-04 01:51:18 +00:00
examples Here is the bulk of the sanitizing. 2007-07-05 17:07:56 +00:00
include This is the patch to provide clean intrinsic function overloading support in LLVM. It cleans up the intrinsic definitions and generally smooths the process for more complicated intrinsic writing. It will be used by the upcoming atomic intrinsics as well as vector and float intrinsics in the future. 2007-08-04 01:51:18 +00:00
lib rewrite the code used to construct pruned SSA form with the IDF method. 2007-08-04 22:50:14 +00:00
projects Convert .cvsignore files 2007-06-29 16:35:07 +00:00
runtime crtend is only for llvm-gcc3, remove it. 2007-02-23 19:34:09 +00:00
test This is the patch to provide clean intrinsic function overloading support in LLVM. It cleans up the intrinsic definitions and generally smooths the process for more complicated intrinsic writing. It will be used by the upcoming atomic intrinsics as well as vector and float intrinsics in the future. 2007-08-04 01:51:18 +00:00
tools Regenerating. 2007-08-04 01:56:21 +00:00
utils This is the patch to provide clean intrinsic function overloading support in LLVM. It cleans up the intrinsic definitions and generally smooths the process for more complicated intrinsic writing. It will be used by the upcoming atomic intrinsics as well as vector and float intrinsics in the future. 2007-08-04 01:51:18 +00:00
website Prepare for "core" website. 2007-08-03 05:43:35 +00:00
win32 Updates to the VStudio project files: 2007-07-27 18:20:11 +00:00
Xcode Update project 2007-01-29 18:45:08 +00:00
build-for-llvm-top.sh Update for changes in library.sh 2007-07-21 09:33:41 +00:00
configure Regenerate for __dso_handle, per Anton's request. 2007-07-30 20:13:24 +00:00
CREDITS.TXT Record my recent work. 2007-07-05 16:56:24 +00:00
LICENSE.TXT bzip2 is gone 2007-05-06 23:18:44 +00:00
llvm.spec.in * llvm.spec.in: update blurb 2007-07-13 09:48:29 +00:00
Makefile Get rid of annoying spaces. 2007-07-11 23:44:08 +00:00
Makefile.common Update comments to reflect new variable names. Patch contributed by 2005-02-14 16:02:19 +00:00
Makefile.config.in Change the place where man pages are installed to ${prefix}/share/man1. This 2007-07-03 23:04:11 +00:00
Makefile.rules Restore ability to build archives (oops) 2007-07-23 08:20:46 +00:00
ModuleInfo.txt Update to include clean and install commands. 2007-07-20 20:54:41 +00:00
README.txt test 2007-04-20 20:49:25 +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.