[all-commits] [llvm/llvm-project] 76672e: [Polly] Add vectorize metadata to loops identified...

[Karthika Devi C via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 76672e3349bbc7bc58b0ae93d5cc994f3e16971a
      https://github.com/llvm/llvm-project/commit/76672e3349bbc7bc58b0ae93d5cc994f3e16971a
  Author: Karthika Devi C <quic_kartc at quicinc.com>
  Date:   2025-01-22 (Wed, 22 Jan 2025)

  Changed paths:
    M polly/include/polly/CodeGen/IRBuilder.h
    M polly/lib/CodeGen/IRBuilder.cpp
    M polly/lib/CodeGen/LoopGenerators.cpp
    A polly/test/CodeGen/Metadata/basic_vec_annotate.ll

  Log Message:
  -----------
  [Polly] Add vectorize metadata to loops identified as vectorizable by polly (#113994)

This patch introduces the initial implementation for annotating loops
created by Polly. Polly generates RunTimeChecks (RTCs), which result in
loop versioning. Specifically, the loop created by Polly is executed
when the RTCs pass, otherwise, the original loop is executed.

This patch adds the "llvm.loop.vectorize.enable" metadata, setting it to
true for loops created by Polly. Disabling vectorization for the original
fallback loop is already merged in #119188.

This behavior is controlled by the 'polly-annotate-metadata-vectorize'
flag, and the annotations are applied only when this flag is enabled.
This flag is set to false by default.

NOTE: This commit is initial patch in effort to make polly interact with
Loop Vectorizer via metadata.

---------

Co-authored-by: Michael Kruse <github at meinersbur.de>



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