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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug tree-optimization/100089] [11/12 Regression] 30% performance
 regression for denbench/mp2decoddata2 with -O3
Date: Tue, 24 Aug 2021 10:34:25 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D100089

--- Comment #9 from Richard Biener <rguenth at gcc dot gnu.org> ---
Created attachment 51350
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=3D51350&action=3Dedit
patch

This implements scanning for not vectorized COND_EXPRs with
-fvect-cost-model=3Dvery-cheap when vectorizing if-converted loop bodies.  =
It
also gives
vect_bb_vectorization_profitable_p enough info to eventually do something
more fancy (namely the original not if-converted loop body).=