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From: Filip Kastl <pheeck@gcc.gnu.org> To: gcc-cvs@gcc.gnu.org Subject: [gcc(refs/users/pheeck/heads/sccp)] updating OCCURS_IN_ABNORMAL_PHI Date: Wed, 15 Feb 2023 10:14:56 +0000 (GMT) [thread overview] Message-ID: <20230215101456.6CED13857C51@sourceware.org> (raw) https://gcc.gnu.org/g:8b2b361630a4a3053ee90210e63bf41c3ff27a0e commit 8b2b361630a4a3053ee90210e63bf41c3ff27a0e Author: Filip Kastl <filip.kastl@gmail.com> Date: Wed Sep 7 14:59:06 2022 +0200 updating OCCURS_IN_ABNORMAL_PHI Diff: --- gcc/sccp.cc | 28 +++++++++++++++++++--------- 1 file changed, 19 insertions(+), 9 deletions(-) diff --git a/gcc/sccp.cc b/gcc/sccp.cc index fd7f01db6b3..86f84b56878 100644 --- a/gcc/sccp.cc +++ b/gcc/sccp.cc @@ -295,23 +295,26 @@ tarjan_compute_sccs (auto_vec<gphi *> &phis) } static void -replace_scc_by_value (vec<gphi *> scc, tree v) +replace_scc_by_value (vec<gphi *> scc, tree replace_by) { // DEBUG + /* if (scc.length () >= 3) { std::cerr << "Replacing scc of size " << scc.length () << std::endl; } + */ for (gphi *phi : scc) { - tree ssa_name = gimple_get_lhs (phi); + tree get_replaced = gimple_get_lhs (phi); // DEBUG - unsigned vnum_get_replaced = SSA_NAME_VERSION (ssa_name); - if (TREE_CODE (v) == SSA_NAME) + /* + unsigned vnum_get_replaced = SSA_NAME_VERSION (get_replaced); + if (TREE_CODE (replace_by) == SSA_NAME) { - unsigned vnum_replaced_by = SSA_NAME_VERSION (v); + unsigned vnum_replaced_by = SSA_NAME_VERSION (replace_by); std::cerr << "Replacing " << vnum_get_replaced << " by " << vnum_replaced_by << std::endl; } @@ -320,15 +323,20 @@ replace_scc_by_value (vec<gphi *> scc, tree v) std::cerr << "Replacing " << vnum_get_replaced << " by something" << " that isn't an SSA name" << std::endl; } + */ + + if (SSA_NAME_OCCURS_IN_ABNORMAL_PHI (get_replaced) + && TREE_CODE (replace_by) == SSA_NAME) + SSA_NAME_OCCURS_IN_ABNORMAL_PHI (replace_by) = 1; - /* Replace each occurence of phi by value v. */ + /* Replace each occurence of PHI by value replace_by. */ use_operand_p use_p; imm_use_iterator iter; gimple *use_stmt; - FOR_EACH_IMM_USE_STMT (use_stmt, iter, ssa_name) + FOR_EACH_IMM_USE_STMT (use_stmt, iter, get_replaced) { FOR_EACH_IMM_USE_ON_STMT (use_p, iter) - SET_USE (use_p, v); + SET_USE (use_p, replace_by); update_stmt (use_stmt); } } @@ -353,8 +361,10 @@ remove_zero_uses_phis () remove_phi_node (&pi, true); // DEBUG + /* unsigned version = SSA_NAME_VERSION (ssa_name); std::cerr << "Removed " << version << std::endl; + */ } else gsi_next (&pi); @@ -480,7 +490,7 @@ public: unsigned pass_sccp::execute (function *) { - debug_phis (); // DEBUG + //debug_phis (); // DEBUG init_sccp (); auto_vec<gphi *> phis = get_all_phis ();
next reply other threads:[~2023-02-15 10:14 UTC|newest] Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top 2023-02-15 10:14 Filip Kastl [this message] -- strict thread matches above, loose matches on Subject: below -- 2022-09-07 12:59 Filip Kastl
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