[all-commits] [llvm/llvm-project] 5b552d: [LV][VPlan] Prevent calculate cost for skiped inst...

[Elvis Wang via All-commits]

  Branch: refs/heads/release/20.x
  Home:   https://github.com/llvm/llvm-project
  Commit: 5b552d780ae82b07aaed5703690e6a7cc431ee95
      https://github.com/llvm/llvm-project/commit/5b552d780ae82b07aaed5703690e6a7cc431ee95
  Author: Elvis Wang <elvis.wang at sifive.com>
  Date:   2025-03-11 (Tue, 11 Mar 2025)

  Changed paths:
    M llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
    M llvm/test/Transforms/LoopVectorize/X86/cost-model.ll

  Log Message:
  -----------
  [LV][VPlan] Prevent calculate cost for skiped instructions in precomputeCosts(). (#127966)

Skip calculating instruction costs for exit conditions in
precomputeCosts() when it should be skipped.

Reported from:
https://github.com/llvm/llvm-project/issues/115744#issuecomment-2670479463
Godbolt for reduced test cases: https://godbolt.org/z/fr4YMeqcv

(cherry picked from commit 8009c1fd81ad0b6ac65724d2b134a92db48f8fbf)



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