Hi, While looking into sphinx3 regression I noticed that vectorizer produces BBs with overall probability count 120%. This patch fixes it. Richi, I don't know how to create a testcase, but having one would be nice.
Bootstrapped/regtested x86_64-linux, commited last night (sorry for late email) gcc/ChangeLog: PR tree-optimization/110649 * tree-vect-loop.cc (optimize_mask_stores): Set correctly probability of the if-then-else construct. diff --git a/gcc/tree-vect-loop.cc b/gcc/tree-vect-loop.cc index 7d917bfd72c..b44fb9c7712 100644 --- a/gcc/tree-vect-loop.cc +++ b/gcc/tree-vect-loop.cc @@ -11680,6 +11679,7 @@ optimize_mask_stores (class loop *loop) efalse = make_edge (bb, store_bb, EDGE_FALSE_VALUE); /* Put STORE_BB to likely part. */ efalse->probability = profile_probability::unlikely (); + e->probability = efalse->probability.invert (); store_bb->count = efalse->count (); make_single_succ_edge (store_bb, join_bb, EDGE_FALLTHRU); if (dom_info_available_p (CDI_DOMINATORS))