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Sanjoy Das bbebcb6c4d Teach SCEV normalization to de/normalize non-affine add recs 
Summary:
Before this change, SCEV Normalization would incorrectly normalize
non-affine add recurrences.  To work around this there was (still is)
a check in place to make sure we only tried to normalize affine add
recurrences.

We recently found a bug in aforementioned check to bail out of
normalizing non-affine add recurrences.  However, instead of fixing
the bailout, I have decided to teach SCEV normalization to work
correctly with non-affine add recurrences, making the bailout
unnecessary (I'll remove it in a subsequent change).

I've also added some unit tests (which would have failed before this
change).

Reviewers: atrick, sunfish, efriedma

Reviewed By: atrick

Subscribers: mcrosier, mzolotukhin, llvm-commits

Differential Revision: https://reviews.llvm.org/D32104

llvm-svn: 301281
 		2017-04-25 00:09:19 +00:00
clang [modules ts] Diagnose 'export' declarations outside of a module interface. 2017-04-24 23:12:30 +00:00
clang-tools-extra [clang-tidy] Some Cleanups for performance-faster-string-find check. 2017-04-24 16:41:00 +00:00
compiler-rt Revert r301089 "[builtins] Implement emulated TLS on Windows." 2017-04-24 23:16:49 +00:00
debuginfo-tests Add additional CHECKs to safestack.c. 2017-04-17 17:57:05 +00:00
libclc math: Implement sinh function 2017-02-25 02:46:53 +00:00
libcxx Add missing acquire_load to call_once overload. 2017-04-23 16:58:48 +00:00
libcxxabi Fix PR25874 - cxa_thread_atexit_test.pass.cpp has an incorrect XFAIL. 2017-04-20 23:40:35 +00:00
libunwind [CMake][libunwind] Fix the -target and -gcc-toolchain flag handling 2017-04-16 06:08:44 +00:00
lld Replace a binary .so with a text .s. 2017-04-24 23:51:18 +00:00
lldb Name the C++ source files for two tests correctly. 2017-04-24 23:58:36 +00:00
llgo benchcomp: Add a mode for analyzing file sizes. 2017-04-03 19:13:12 +00:00
llvm Teach SCEV normalization to de/normalize non-affine add recs 2017-04-25 00:09:19 +00:00
openmp [OpenMP] libomptarget: Set ref count for global objects to positive infinity 2017-04-22 11:45:03 +00:00
parallel-libs [Axccel] Remove -Wno-missing-braces in build 2016-12-19 21:34:07 +00:00
polly [Polly] [DependenceInfo] change WAR generation, Read will not block Read 2017-04-24 22:23:12 +00:00