llvm-project/llvm
Sanjoy Das 876bd51486 Revert some changes that were made to fix PR20680.
Summary:
As far as I can tell, the real bug causing the issue was fixed in
r230533.  SCEVExpander should mark an increment operation as nuw or nsw
only if it can *prove* that the operation does not overflow.  There
shouldn't be any situation where we have to do something different
because of no-wrap flags generated by SCEVExpander.

Revert "IndVarSimplify: Allow LFTR to fire more often"

This reverts commit 1ade0f0faa98877b688e0b9da58e876052c1e04e (SVN: 222213).

Revert "IndVarSimplify: Don't let LFTR compare against a poison value"

This reverts commit c0f2b8b528d8a37b0a1522aae90af649d6357eb5 (SVN: 217102).

Reviewers: majnemer, atrick, spatel

Differential Revision: http://reviews.llvm.org/D7979

llvm-svn: 230921
2015-03-01 23:36:26 +00:00
..
autoconf Revert r230812. Do not break builds for no reason. 2015-02-28 19:43:20 +00:00
bindings [PM] Remove the old 'PassManager.h' header file at the top level of 2015-02-13 10:01:29 +00:00
cmake Minor follow-ups to r229720 suggested on llvmdev 2015-02-27 18:22:46 +00:00
docs [OCaml] Generate documentation again with autoconf buildsystem. 2015-02-28 13:48:23 +00:00
examples [Orc][Kaleidoscope] More tutorial cleanup, a little extra debugging output. 2015-02-26 23:52:42 +00:00
include ArrayRef: Put back std::equal for operator== with a check for the empty ArrayRefs 2015-03-01 23:35:20 +00:00
lib Revert some changes that were made to fix PR20680. 2015-03-01 23:36:26 +00:00
projects
test Revert some changes that were made to fix PR20680. 2015-03-01 23:36:26 +00:00
tools Add missing includes. make_unique proliferated everywhere. 2015-03-01 21:28:53 +00:00
unittests Add missing includes. make_unique proliferated everywhere. 2015-03-01 21:28:53 +00:00
utils Add missing includes. make_unique proliferated everywhere. 2015-03-01 21:28:53 +00:00
.arcconfig
.clang-format
.clang-tidy
.gitignore
CMakeLists.txt Minor follow-ups to r229720 suggested on llvmdev 2015-02-27 18:22:46 +00:00
CODE_OWNERS.TXT
CREDITS.TXT
LICENSE.TXT
LLVMBuild.txt
Makefile
Makefile.common
Makefile.config.in
Makefile.rules
README.txt
configure Revert r230812. Do not break builds for no reason. 2015-02-28 19:43:20 +00:00
llvm.spec.in

README.txt

Low Level Virtual Machine (LLVM)
================================

This directory and its subdirectories contain source code for LLVM,
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.