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Fork of llvm with experimental commits and workarounds for RPCS3
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Dan Gohman d13f674130 Factor the code for collecting IV users out of LSR into an IVUsers class, 
and generalize it so that it can be used by IndVarSimplify. Implement the
base IndVarSimplify transformation code using IVUsers. This removes
TestOrigIVForWrap and associated code, as ScalarEvolution now has enough
builtin overflow detection and folding logic to handle all the same cases,
and more. Run "opt -iv-users -analyze -disable-output" on your favorite
loop for an example of what IVUsers does.

This lets IndVarSimplify eliminate IV casts and compute trip counts in
more cases. Also, this happens to finally fix the remaining testcases
in PR1301.

Now that IndVarSimplify is being more aggressive, it occasionally runs
into the problem where ScalarEvolutionExpander's code for avoiding
duplicate expansions makes it difficult to ensure that all expanded
instructions dominate all the instructions that will use them. As a
temporary measure, IndVarSimplify now uses a FixUsesBeforeDefs function
to fix up instructions inserted by SCEVExpander. Fortunately, this code
is contained, and can be easily removed once a more comprehensive
solution is available.

llvm-svn: 71535
2009-05-12 02:17:14 +00:00
autoconf Add terminal width detection to llvm::sys::Process. This is needed to 2009-05-11 18:05:52 +00:00
bindings Rename PaddedSize to AllocSize, in the hope that this 2009-05-09 07:06:46 +00:00
cmake Add terminal width detection to llvm::sys::Process. This is needed to 2009-05-11 18:05:52 +00:00
docs Make MDNode use CallbackVH. Also change MDNode to store Value* instead of 2009-05-10 20:57:05 +00:00
examples silence a warning. 2009-04-15 00:16:05 +00:00
include Factor the code for collecting IV users out of LSR into an IVUsers class, 2009-05-12 02:17:14 +00:00
lib Factor the code for collecting IV users out of LSR into an IVUsers class, 2009-05-12 02:17:14 +00:00
projects Revert r67655 and r67656, as they are breaking the build. I'm 2009-03-25 00:52:11 +00:00
runtime Drop toy GC runtime. 2009-03-02 03:46:48 +00:00
test Factor the code for collecting IV users out of LSR into an IVUsers class, 2009-05-12 02:17:14 +00:00
tools The 'forward_as' property did not use its second argument. 2009-05-06 01:41:19 +00:00
unittests Make MDNode use CallbackVH. Also change MDNode to store Value* instead of 2009-05-10 20:57:05 +00:00
utils Rename PaddedSize to AllocSize, in the hope that this 2009-05-09 07:06:46 +00:00
website Prepare for "core" website. 2007-08-03 05:43:35 +00:00
win32 Update hand-crafted VC++ build. 2009-02-02 19:22:02 +00:00
Xcode Remove Stacker.html from Xcode project. 2008-10-14 23:23:59 +00:00
build-for-llvm-top.sh Patch to build llvm with srcdir != objdir from 2009-01-23 08:42:38 +00:00
CMakeLists.txt CMake: Added notes pointing to the LLVM CMake documentation. 2009-04-04 22:52:02 +00:00
configure Add terminal width detection to llvm::sys::Process. This is needed to 2009-05-11 18:05:52 +00:00
CREDITS.TXT Initial test commit 2009-04-28 06:15:00 +00:00
LICENSE.TXT Another great year for LLVM! 2009-02-26 15:17:13 +00:00
llvm.spec.in * llvm.spec.in: update blurb 2007-07-13 09:48:29 +00:00
Makefile Change 'make install' to install tblgen, for better support of out-of-tree targets, 2009-05-08 17:32:47 +00:00
Makefile.common Removed trailing whitespace from Makefiles. 2009-01-09 16:44:42 +00:00
Makefile.config.in Add a --enable-profiling option to configure to build Debug+Profile and 2009-04-17 14:49:22 +00:00
Makefile.rules In non-pic builds, we can use -mdynamic-no-pic for a little more speed. 2009-05-08 23:08:58 +00:00
ModuleInfo.txt Patch to build llvm with srcdir != objdir from 2009-01-23 08:42:38 +00:00
README.txt README.txt: test commit w/blank line appended 2009-03-23 21:00:45 +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.