Anna Thomas b2455558f1 [LV] Avoid vectorizing first order recurrence when phi uses are outside loop ... In the vectorization of first order recurrence, we vectorize such that the last element in the vector will be the one extracted to pass into the scalar remainder loop. However, this is not true when there is a phi (other than the primary induction variable) is used outside the loop. In such a case, we need the value from the second last iteration (i.e. the phi value), not the last iteration (which would be the phi update). I've added a test case for this. Also see PR32396. A follow up patch would generate the correct code gen for such cases, and turn this vectorization on. Differential Revision: https://reviews.llvm.org/D31910 Reviewers: mssimpso llvm-svn: 299985		2017-04-11 21:02:00 +00:00
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BBVectorize.cpp	Test commit access	2017-03-21 14:49:19 +00:00
CMakeLists.txt
LLVMBuild.txt
LoadStoreVectorizer.cpp	LoadStoreVectorizer: Split even sized illegal chains properly	2017-02-23 03:58:53 +00:00
LoopVectorize.cpp	[LV] Avoid vectorizing first order recurrence when phi uses are outside loop	2017-04-11 21:02:00 +00:00
SLPVectorizer.cpp	[TargetTransformInfo] getIntrinsicInstrCost() scalarization estimation improved	2017-03-14 06:35:36 +00:00
Vectorize.cpp