[all-commits] [llvm/llvm-project] 6f7160: [SLP]Attempt to vectorize long stores, if short on...

[Alexey Bataev via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 6f7160eedb2db02f37d4ffd52fff7b0cf88b3fdc
      https://github.com/llvm/llvm-project/commit/6f7160eedb2db02f37d4ffd52fff7b0cf88b3fdc
  Author: Alexey Bataev <a.bataev at outlook.com>
  Date:   2024-04-17 (Wed, 17 Apr 2024)

  Changed paths:
    M llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp
    M llvm/test/Transforms/SLPVectorizer/X86/pr46983.ll

  Log Message:
  -----------
  [SLP]Attempt to vectorize long stores, if short one failed.

We can try to vectorize long store sequences, if short ones were
unsuccessful because of the non-profitable vectorization. It should not
increase compile time significantly (stores are sorted already,
complexity is n x log n), but vectorize extra code.

Metric: size..text

Program                                                                         size..text
                                                                                results     results0    diff
         test-suite :: External/SPEC/CINT2006/400.perlbench/400.perlbench.test  1088012.00  1088236.00  0.0%
                  test-suite :: SingleSource/UnitTests/matrix-types-spec.test   480396.00   480476.00  0.0%
          test-suite :: External/SPEC/CINT2017rate/525.x264_r/525.x264_r.test   664613.00   664661.00  0.0%
         test-suite :: External/SPEC/CINT2017speed/625.x264_s/625.x264_s.test   664613.00   664661.00  0.0%
        test-suite :: External/SPEC/CFP2017rate/510.parest_r/510.parest_r.test  2041105.00  2040961.00 -0.0%
                 test-suite :: MultiSource/Applications/JM/lencod/lencod.test   836563.00   836387.00 -0.0%
                 test-suite :: MultiSource/Benchmarks/7zip/7zip-benchmark.test  1035100.00  1032140.00 -0.3%

In all benchmarks extra code gets vectorized

Reviewers: RKSimon

Reviewed By: RKSimon

Pull Request: https://github.com/llvm/llvm-project/pull/88563



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