bcm5719-llvm/llvm/test/Transforms/SLPVectorizer, branch meklort-10.0.1

[SLPVectorizer] Do not assume extracelement idx is a ConstantInt.

2020-02-19T12:38:53+00:00

The index of an ExtractElementInst is not guaranteed to be a ConstantInt. It can be any integer value. Check explicitly for ConstantInts. The new test cases illustrate scenarios where we crash without this patch. I've also added another test case to check the matching of extractelement vector ops works. Reviewers: RKSimon, ABataev, dtemirbulatov, vporpo Reviewed By: ABataev Differential Revision: https://reviews.llvm.org/D74758 (cherry picked from commit e32522ca178acc42e26f21d64ef8fc180ad772bd)

[SLP] Don't allow Div/Rem as alternate opcodes

2020-01-23T00:08:41+00:00

Summary: We don't have control/verify what will be the RHS of the division, so it might happen to be zero, causing UB. Reviewers: Vasilis, RKSimon, ABataev Reviewed By: ABataev Subscribers: vporpo, ABataev, hiraditya, llvm-commits, vdmitrie Tags: #llvm Differential Revision: https://reviews.llvm.org/D72740 (cherry picked from commit e1d6d368529322edc658c893c01eaadaf8053ea6)

[SLP] Add a test showing miscompilation in AltOpcode support

2020-01-23T00:08:29+00:00

Reviewers: Vasilis, RKSimon, ABataev Reviewed By: RKSimon, ABataev Subscribers: ABataev, inglorion, dexonsmith, llvm-commits, vdmitrie Tags: #llvm Differential Revision: https://reviews.llvm.org/D72739 (cherry picked from commit 757fe53994c1792cbdc84526696a0e256345911f)

[NFC] Fix trivial typos in comments

2020-01-06T10:50:26+00:00

Reviewed By: jhenderson Differential Revision: https://reviews.llvm.org/D72143 Patch by Kazuaki Ishizaki.

Migrate function attribute "no-frame-pointer-elim"="false" to "frame-pointer"="none" as cleanups after D56351

2019-12-25T00:27:51+00:00

Migrate function attribute "no-frame-pointer-elim" to "frame-pointer"="all" as cleanups after D56351

2019-12-24T23:57:33+00:00

[SLP]Fix test arguments, NFC.

2019-12-19T18:36:21+00:00

[SLP]Added test for gathering reused extracts from narrow vector, NFC.

2019-12-19T17:51:56+00:00

[SLP] Enhance SLPVectorizer to vectorize different combinations of aggregates

2019-12-03T16:29:27+00:00

Summary: Make SLPVectorize to recognize homogeneous aggregates like `{<2 x float>, <2 x float>}`, `{{float, float}, {float, float}}`, `[2 x {float, float}]` and so on. It's a follow-up of https://reviews.llvm.org/D70068. Merged `findBuildVector()` and `findBuildAggregate()` to one `findBuildAggregate()` function making it recursive to recognize multidimensional aggregates. Aggregates required to be homogeneous. Reviewers: RKSimon, ABataev, dtemirbulatov, spatel, vporpo Subscribers: hiraditya, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D70587

[x86] make SLM extract vector element more expensive than default

2019-11-27T19:08:56+00:00

I'm not sure what the effect of this change will be on all of the affected tests or a larger benchmark, but it fixes the horizontal add/sub problems noted here: https://reviews.llvm.org/D59710?vs=227972&id=228095&whitespace=ignore-most#toc The costs are based on reciprocal throughput numbers in Agner's tables for PEXTR*; these appear to be very slow ops on Silvermont. This is a small step towards the larger motivation discussed in PR43605: https://bugs.llvm.org/show_bug.cgi?id=43605 Also, it seems likely that insert/extract is the source of perf regressions on other CPUs (up to 30%) that were cited as part of the reason to revert D59710, so maybe we'll extend the table-based approach to other subtargets. Differential Revision: https://reviews.llvm.org/D70607