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295be8492e
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Sanjoy Das 295be8492e [IndVarSimplify] use the "canonical" way to infer no-wrap. 
Summary:
rL225282 introduced an ad-hoc way to promote some additions to nuw or
nsw.  Since then SCEV has become smarter in directly proving no-wrap;
and using the canonical "ext(A op B) == ext(A) op ext(B)" method of
proving no-wrap is just as powerful now.  Rip out the existing
complexity in favor of getting SCEV to do all the heaving lifting
internally.

This change does not add any unit tests because it is supposed to be a
non-functional change.  Tests added in rL225282 and rL226075 are valid
tests for this change.

Reviewers: atrick, majnemer

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D7981

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@231306 91177308-0d34-0410-b5e6-96231b3b80d8
2015-03-04 22:24:23 +00:00
autoconf Revert r230812. Do not break builds for no reason. 2015-02-28 19:43:20 +00:00
bindings Restore LLVMLinkModules C API until it is properly deprecated. 2015-03-02 18:59:38 +00:00
cmake [sanitizer/coverage] Add AFL-style coverage counters (search heuristic for fuzzing). 2015-03-03 23:27:02 +00:00
docs Update LangRef for explicit type changes to 'load' instruction 2015-03-04 22:06:14 +00:00
examples Fix the build of the gold-plugin and examples. 2015-03-04 19:15:29 +00:00
include [SCEV] make SCEV smarter about proving no-wrap. 2015-03-04 22:24:17 +00:00
lib [IndVarSimplify] use the "canonical" way to infer no-wrap. 2015-03-04 22:24:23 +00:00
projects Reverse the order libc++ and libc++abi are added in CMake. 2015-03-04 01:16:43 +00:00
test [SCEV] make SCEV smarter about proving no-wrap. 2015-03-04 22:24:17 +00:00
tools Provide an explicit move ctor because MSVC can't synthesize one 2015-03-04 22:20:52 +00:00
unittests DWARFFormValue: Add getAsSignedConstant method. 2015-03-04 22:07:41 +00:00
utils Add a FIXME for PR22796, broken ordering of ClassInfo in TableGen 2015-03-04 19:56:44 +00:00
.arcconfig
.clang-format
.clang-tidy
.gitignore Add one more vim swap file pattern 2015-01-30 21:59:28 +00:00
CMakeLists.txt Minor follow-ups to r229720 suggested on llvmdev 2015-02-27 18:22:46 +00:00
CODE_OWNERS.TXT Assume code ownership for the PS4 to ensure patches get reviewed, per the Developer Policy. 2015-01-28 18:33:39 +00:00
configure Revert r230812. Do not break builds for no reason. 2015-02-28 19:43:20 +00:00
CREDITS.TXT
LICENSE.TXT
llvm.spec.in
LLVMBuild.txt
Makefile
Makefile.common
Makefile.config.in Add a check for misbehaving -Wcomment from gcc-4.7 and add 2014-11-05 00:35:15 +00:00
Makefile.rules Add support for SunOS function/data sections and associated 2015-03-03 20:54:29 +00:00
README.txt Revert test commit 2015-02-04 18:46:00 +00:00

README.txt 

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