[PATCH] D67905: [LV] Vectorizer should adjust trip count in profile information

[Evgeniy via Phabricator via llvm-commits]

ebrevnov created this revision.
Herald added subscribers: llvm-commits, rkruppe, hiraditya.
Herald added a project: LLVM.

Vectorized loop processes VFxUF number of elements in one iteration thus total number of iterations decreases proportionally. In addition epilog loop may not have more than VFxUF - 1 iterations. This patch updates profile information accordingly.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D67905

Files:
  llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
  llvm/test/Transforms/LoopVectorize/check-prof-info.ll
  llvm/test/Transforms/LoopVectorize/hot_short_tc_loop.ll
  llvm/test/Transforms/LoopVectorize/tripcount.ll

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