From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 1666) id 3E78438582A4; Wed, 15 Mar 2023 09:29:56 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 3E78438582A4 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1678872596; bh=bfvLRh9r+/rAjhGi3UACl4ksOXEIVm2ewpM2N4oTSUI=; h=From:To:Subject:Date:From; b=XxmeBdXZ98LjWl0xXfvjNrKOqsJ7Y1BErJtL0Ylw4D/Pp8j0vKYSh0IQrowItiVoK e00j67WRdgQzINSvY7Wg61bnadRfCe9KzVs8bO8MCdXIwKYBFrVMAqSaR1znozF+Cp 5G3NZyUIbFNOdHgVku2zphJXu+ugtaCNvI7nnGfU= MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="utf-8" From: Richard Biener To: gcc-cvs@gcc.gnu.org Subject: [gcc r13-6691] tree-optimization/109139 - fix .DEFERRED_INIT removal X-Act-Checkin: gcc X-Git-Author: Richard Biener X-Git-Refname: refs/heads/master X-Git-Oldrev: 45641f3a99281bb0a429649741a29c2aace4c63e X-Git-Newrev: 0fc541efc340535d212cd685176bd9592905de8a Message-Id: <20230315092956.3E78438582A4@sourceware.org> Date: Wed, 15 Mar 2023 09:29:56 +0000 (GMT) List-Id: https://gcc.gnu.org/g:0fc541efc340535d212cd685176bd9592905de8a commit r13-6691-g0fc541efc340535d212cd685176bd9592905de8a Author: Richard Biener Date: Wed Mar 15 09:47:18 2023 +0100 tree-optimization/109139 - fix .DEFERRED_INIT removal The following make sure to strip MEMs when looking for unused decls on the LHS of .DEFERRED_INIT. PR tree-optimization/109139 * tree-ssa-live.cc (remove_unused_locals): Look at the base address for unused decls on the LHS of .DEFERRED_INIT. * gcc.dg/torture/pr109139.c: New testcase. Diff: --- gcc/testsuite/gcc.dg/torture/pr109139.c | 12 ++++++++++++ gcc/tree-ssa-live.cc | 3 ++- 2 files changed, 14 insertions(+), 1 deletion(-) diff --git a/gcc/testsuite/gcc.dg/torture/pr109139.c b/gcc/testsuite/gcc.dg/torture/pr109139.c new file mode 100644 index 00000000000..9fa97ebc665 --- /dev/null +++ b/gcc/testsuite/gcc.dg/torture/pr109139.c @@ -0,0 +1,12 @@ +/* { dg-do compile } */ +/* { dg-additional-options "-ftrivial-auto-var-init=zero" } */ + +const int COMPARE_CANDIDATE; +char ipmi_ek_compare_link_record1_0, ipmi_ek_compare_link_record2_0; +void ipmi_ek_compare_link() +{ + for (; ipmi_ek_compare_link_record1_0;) + for (; ipmi_ek_compare_link_record2_0;) { + int link[COMPARE_CANDIDATE]; + } +} diff --git a/gcc/tree-ssa-live.cc b/gcc/tree-ssa-live.cc index 9118e82b4f1..1be92956cc5 100644 --- a/gcc/tree-ssa-live.cc +++ b/gcc/tree-ssa-live.cc @@ -897,7 +897,8 @@ remove_unused_locals (void) else if (gimple_call_internal_p (stmt, IFN_DEFERRED_INIT)) { tree lhs = gimple_call_lhs (stmt); - if (DECL_P (lhs) && !is_used_p (lhs)) + tree base = get_base_address (lhs); + if (DECL_P (base) && !is_used_p (base)) { unlink_stmt_vdef (stmt); gsi_remove (&gsi, true);