Anna Thomas 0048f91a87 [LV] Avoid vectorizing unsafe dependencies in uniform address ...

Summary:
Currently, when vectorizing stores to uniform addresses, the only
instance we prevent vectorization is if there are multiple stores to the
same uniform address causing an unsafe dependency.
This patch teaches LAA to avoid vectorizing loops that have an unsafe
cross-iteration dependency between a load and a store to the same uniform address.

Fixes PR39653.

Reviewers: Ayal, efriedma

Subscribers: rkruppe, llvm-commits

Differential Revision: https://reviews.llvm.org/D54538

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@347220 91177308-0d34-0410-b5e6-96231b3b80d8

2018-11-19 15:39:59 +00:00

..

backward-dep-different-types.ll

[PM] Avoid getResult on a higher level in LoopAccessAnalysis

2016-07-07 01:01:53 +00:00

forward-loop-carried.ll

[PM] Avoid getResult on a higher level in LoopAccessAnalysis

2016-07-07 01:01:53 +00:00

forward-loop-independent.ll

[PM] Avoid getResult on a higher level in LoopAccessAnalysis

2016-07-07 01:01:53 +00:00

independent-interleaved.ll

[PM] Avoid getResult on a higher level in LoopAccessAnalysis

2016-07-07 01:01:53 +00:00

interleave-innermost.ll

[Vectorization] Actually return from error case in isStridedPtr

2016-01-08 01:55:13 +00:00

memcheck-for-loop-invariant.ll

[PM] Avoid getResult on a higher level in LoopAccessAnalysis

2016-07-07 01:01:53 +00:00

memcheck-off-by-one-error.ll

[Loop Vectorizer] Fixed memory confilict checks.

2016-08-28 08:53:53 +00:00

memcheck-wrapping-pointers.ll

[LV] Avoid vectorizing unsafe dependencies in uniform address

2018-11-19 15:39:59 +00:00

multiple-strides-rt-memory-checks.ll

[LV/LoopAccess] Check statically if an unknown dependence distance can be

2017-02-12 09:32:53 +00:00

non-wrapping-pointer.ll

[PM] Avoid getResult on a higher level in LoopAccessAnalysis

2016-07-07 01:01:53 +00:00

nullptr.ll

[PM] Avoid getResult on a higher level in LoopAccessAnalysis

2016-07-07 01:01:53 +00:00

number-of-memchecks.ll

Re-apply "[SCEV] Strengthen StrengthenNoWrapFlags (reapply r334428)."

2018-07-13 23:58:46 +00:00

pointer-with-unknown-bounds.ll

[PM] Avoid getResult on a higher level in LoopAccessAnalysis

2016-07-07 01:01:53 +00:00

pr31098.ll

[LV/LoopAccess] Check statically if an unknown dependence distance can be

2017-02-12 09:32:53 +00:00

resort-to-memchecks-only.ll

[PM] Avoid getResult on a higher level in LoopAccessAnalysis

2016-07-07 01:01:53 +00:00

reverse-memcheck-bounds.ll

[Loop Vectorizer] Fixed memory confilict checks.

2016-08-28 08:53:53 +00:00

safe-no-checks.ll

[PM] Avoid getResult on a higher level in LoopAccessAnalysis

2016-07-07 01:01:53 +00:00

safe-with-dep-distance.ll

[PM] Avoid getResult on a higher level in LoopAccessAnalysis

2016-07-07 01:01:53 +00:00

store-to-invariant-check1.ll

[LV] Avoid vectorizing unsafe dependencies in uniform address

2018-11-19 15:39:59 +00:00

store-to-invariant-check2.ll

[LV] Avoid vectorizing unsafe dependencies in uniform address

2018-11-19 15:39:59 +00:00

store-to-invariant-check3.ll

[LV] Avoid vectorizing unsafe dependencies in uniform address

2018-11-19 15:39:59 +00:00

stride-access-dependence.ll

[PM] Avoid getResult on a higher level in LoopAccessAnalysis

2016-07-07 01:01:53 +00:00

underlying-objects-1.ll

[PM] Avoid getResult on a higher level in LoopAccessAnalysis

2016-07-07 01:01:53 +00:00

underlying-objects-2.ll

[PM] Avoid getResult on a higher level in LoopAccessAnalysis

2016-07-07 01:01:53 +00:00

unsafe-and-rt-checks.ll

[PM] Avoid getResult on a higher level in LoopAccessAnalysis

2016-07-07 01:01:53 +00:00

wrapping-pointer-ni.ll

[SCEV] Don't expand Wrap predicate using inttoptr in ni addrspaces

2018-07-26 21:55:06 +00:00

wrapping-pointer-versioning.ll

[SCEV] Don't expand Wrap predicate using inttoptr in ni addrspaces

2018-07-26 21:55:06 +00:00