From patchwork Fri Oct 25 19:47:53 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sam James X-Patchwork-Id: 99624 Return-Path: X-Original-To: patchwork@sourceware.org Delivered-To: patchwork@sourceware.org Received: from server2.sourceware.org (localhost [IPv6:::1]) by sourceware.org (Postfix) with ESMTP id 972A43858C41 for ; Fri, 25 Oct 2024 19:49:11 +0000 (GMT) X-Original-To: gcc-patches@gcc.gnu.org Delivered-To: gcc-patches@gcc.gnu.org Received: from smtp.gentoo.org (woodpecker.gentoo.org [140.211.166.183]) by sourceware.org (Postfix) with ESMTP id A57393858D35 for ; Fri, 25 Oct 2024 19:48:26 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.2 sourceware.org A57393858D35 Authentication-Results: sourceware.org; dmarc=pass (p=none dis=none) header.from=gentoo.org Authentication-Results: sourceware.org; spf=pass smtp.mailfrom=gentoo.org ARC-Filter: OpenARC Filter v1.0.0 sourceware.org A57393858D35 Authentication-Results: server2.sourceware.org; arc=none smtp.remote-ip=140.211.166.183 ARC-Seal: i=1; a=rsa-sha256; d=sourceware.org; s=key; t=1729885715; cv=none; b=hrXoMJk3D6g2WvhjScQPD/GDKY1OOeGwSxAKx9bnXYXXT58fgS4iUp6oiICz0iyBmUW8iRK2poJy3UyWDMZCV0D/vKiQCJSOiPVV3CDbY9++ftxDsbMc0C1Ma1c39PZa/wORuMc9H94+NyH6UQqpXnkez6xnT1Nc+vUicSX+qlY= ARC-Message-Signature: i=1; a=rsa-sha256; d=sourceware.org; s=key; t=1729885715; c=relaxed/simple; bh=LbFHciA/CQCK4Q2HwxyjBAaa+LK1IFoDKNdou3viI5I=; h=From:To:Subject:Date:Message-ID:MIME-Version; b=oBNVEGAD0jb4PG/MoTdxEq5gl+0un2uLgwnJh/qnmsXvNN+Ckhy1OZNiX4fkj3HDJKwCmlsM6/191cjF50kLb6PGIAtfGCMZLJ6V3f1kiODDELa1oZj2SFAaUYLc7p9+ekhxWv+QAD5GRPrren/VfJr3YKOEO+KBYXCJS4cEDC0= ARC-Authentication-Results: i=1; server2.sourceware.org From: Sam James To: gcc-patches@gcc.gnu.org Cc: Sam James Subject: [PATCH] testsuite: add testcase for fixed PR107467 Date: Fri, 25 Oct 2024 20:47:53 +0100 Message-ID: <2a3d484399534a1449ac3a29d6089ed62b839a5a.1729885673.git.sam@gentoo.org> X-Mailer: git-send-email 2.47.0 MIME-Version: 1.0 X-Spam-Status: No, score=-10.0 required=5.0 tests=BAYES_00, GIT_PATCH_0, JMQ_SPF_NEUTRAL, KAM_DMARC_STATUS, KAM_NUMSUBJECT, RCVD_IN_MSPIKE_H3, RCVD_IN_MSPIKE_WL, SPF_HELO_PASS, SPF_PASS, TXREP autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org X-BeenThere: gcc-patches@gcc.gnu.org X-Mailman-Version: 2.1.30 Precedence: list List-Id: Gcc-patches mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: gcc-patches-bounces~patchwork=sourceware.org@gcc.gnu.org PR107467 ended up being fixed by the fix for PR115110, but let's add the testcase on top. gcc/testsuite/ChangeLog: PR tree-optimization/107467 PR middle-end/115110 * g++.dg/lto/pr107467_0.C: New test. --- OK? gcc/testsuite/g++.dg/lto/pr107467_0.C | 52 +++++++++++++++++++++++++++ 1 file changed, 52 insertions(+) create mode 100644 gcc/testsuite/g++.dg/lto/pr107467_0.C diff --git a/gcc/testsuite/g++.dg/lto/pr107467_0.C b/gcc/testsuite/g++.dg/lto/pr107467_0.C new file mode 100644 index 000000000000..3a2c1c2d7ae1 --- /dev/null +++ b/gcc/testsuite/g++.dg/lto/pr107467_0.C @@ -0,0 +1,52 @@ +/* { dg-lto-do run } */ +/* { dg-lto-options { -O2 -fno-strict-aliasing -flto } } */ + +template +struct pair +{ + int first; + T second; +}; + +template +[[gnu::optimize("strict-aliasing")]] +bool __attribute__((noinline)) +compare_pairs(const pair &lhs, const pair &rhs) { + return lhs.first == rhs.first && lhs.second == rhs.second; +} + +template struct Combined { + pair +__attribute__((noinline)) get_const() { + return pair{123, nullptr}; + } +[[gnu::optimize("strict-aliasing")]] + bool +__attribute__((noinline)) clashy() { + return compare_pairs(get_const(), get_const()); + } +}; + +class SomeClass {}; +class OtherClass {}; + +[[gnu::optimize("strict-aliasing")]] +[[gnu::used]] +void some_func() { + Combined myvar; + __builtin_printf("%i\n", myvar.clashy()); +} + +[[gnu::optimize("strict-aliasing")]] +void other_func() { + Combined myvar; + int t = myvar.clashy(); + if (!t) + __builtin_abort(); +} + +[[gnu::optimize("O0")]] +int main() +{ + other_func(); +}