From aeb10f8d2a6e1267c981a62dc8163af3b7607797 Mon Sep 17 00:00:00 2001 From: Aldy Hernandez Date: Wed, 27 Oct 2021 18:22:16 +0200 Subject: [PATCH] Kill known equivalences before a new assignment in the path solver. Every time we have a killing statement, we must also kill the relations seen so far. This is similar to what we did for the equivs inherent in PHIs along a path. Tested on x86-64 and ppc64le Linux. gcc/ChangeLog: * gimple-range-path.cc (path_range_query::range_defined_in_block): Call killing_def. --- gcc/gimple-range-path.cc | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/gcc/gimple-range-path.cc b/gcc/gimple-range-path.cc index 2f570a13e05..d8c2a9b6a86 100644 --- a/gcc/gimple-range-path.cc +++ b/gcc/gimple-range-path.cc @@ -288,8 +288,14 @@ path_range_query::range_defined_in_block (irange &r, tree name, basic_block bb) if (gimple_code (def_stmt) == GIMPLE_PHI) ssa_range_in_phi (r, as_a (def_stmt)); - else if (!range_of_stmt (r, def_stmt, name)) - r.set_varying (TREE_TYPE (name)); + else + { + if (name) + get_path_oracle ()->killing_def (name); + + if (!range_of_stmt (r, def_stmt, name)) + r.set_varying (TREE_TYPE (name)); + } if (bb) m_non_null.adjust_range (r, name, bb);