Anna Thomas 0bd00d7d97 [LV] Fix the vector code generation for first order recurrence ...

Summary:
In first order recurrences where phi's are used outside the loop,
we should generate an additional vector.extract of the second last element from
the vectorized phi update.
This is because we require the phi itself (which is the value at the second last
iteration of the vector loop) and not the phi's update within the loop.
Also fix the code gen when we just unroll, but don't vectorize.
Fixes PR32396.

Reviewers: mssimpso, mkuper, anemet

Subscribers: llvm-commits, mzolotukhin

Differential Revision: https://reviews.llvm.org/D31979

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@300238 91177308-0d34-0410-b5e6-96231b3b80d8

2017-04-13 18:59:25 +00:00

..

aarch64-predication.ll

[LV] Make test case more robust

2017-04-05 14:34:13 +00:00

aarch64-unroll.ll

[opaque pointer type] Add textual IR support for explicit type parameter to load instruction

2015-02-27 21:17:42 +00:00

arbitrary-induction-step.ll

[LV] Unify vector and scalar maps

2016-08-24 18:23:17 +00:00

arm64-unroll.ll

[opaque pointer type] Add textual IR support for explicit type parameter to load instruction

2015-02-27 21:17:42 +00:00

backedge-overflow.ll

Re-commit [SCEV] Introduce a guarded backedge taken count and use it in LAA and LV

2016-04-08 14:29:09 +00:00

deterministic-type-shrinkage.ll

[LoopVectorize] Use MapVector rather than DenseMap for MinBWs.

2015-11-26 20:39:51 +00:00

gather-cost.ll

Second attempt at r285517.

2016-10-31 13:17:31 +00:00

induction-trunc.ll

Reapply "[LV] Extend trunc optimization to all IVs with constant integer steps"

2017-02-14 16:28:32 +00:00

interleaved_cost.ll

[TargetTransformInfo] getIntrinsicInstrCost() scalarization estimation improved

2017-03-14 06:35:36 +00:00

interleaved-vs-scalar.ll

[Loop Vectorizer] Cost-based decision for vectorization form of memory instruction.

2017-02-08 19:25:23 +00:00

lit.local.cfg

Reduce verbiage of lit.local.cfg files

2014-06-09 22:42:55 +00:00

loop-vectorization-factors.ll

[LV] Fix the vector code generation for first order recurrence

2017-04-13 18:59:25 +00:00

max-vf-for-interleaved.ll

[LAA] Rename forwarding conflict detection option (NFC)

2016-05-16 17:00:56 +00:00

pr31900.ll

[LoopVectorize] Added address space check when analysing interleaved accesses

2017-02-22 18:37:36 +00:00

predication_costs.ll

Reapply "[LV] Enable vectorization of loops with conditional stores by default"

2016-12-16 19:12:02 +00:00

reduction-small-size.ll

[LV] Relax Small Size Reduction Type Requirement

2015-09-10 21:12:57 +00:00

sdiv-pow2.ll

[opaque pointer type] Add textual IR support for explicit type parameter to load instruction

2015-02-27 21:17:42 +00:00

smallest-and-widest-types.ll

[LV] Considier non-consecutive but vectorizable accesses for VF selection

2017-03-02 13:55:05 +00:00

type-shrinkage-insertelt.ll

[LV] Add support for insertelt/extractelt processing during type truncation

2016-02-15 15:38:17 +00:00