From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from smtp-out1.suse.de (smtp-out1.suse.de [IPv6:2001:67c:2178:6::1c]) by sourceware.org (Postfix) with ESMTPS id 3ECE53858D39 for ; Mon, 3 Apr 2023 09:02:34 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.2 sourceware.org 3ECE53858D39 Authentication-Results: sourceware.org; dmarc=none (p=none dis=none) header.from=suse.cz Authentication-Results: sourceware.org; spf=fail smtp.mailfrom=suse.cz Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by smtp-out1.suse.de (Postfix) with ESMTPS id 061A121B3A; Mon, 3 Apr 2023 09:02:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.cz; s=susede2_rsa; t=1680512553; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=H/XfQd8fVtvMaYRJ3MqFrh063YV2myWVKykIZT6ZM7U=; b=Ci6POTyKFAqhw+vrst39Tw5UAhpBsu90IffX1eAvk43gSbZCq7fPDVKvd6ryXVYflgGiSQ C4ZYStZB2QJC8IPxFGYe+CL98pMW/4TZir/sRQU+MRDpca7J2A3zlQMw10xpluQBo23F7h PPmh8vy2mIaMHZOhMZ/ELYzAe//pl2Y= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.cz; s=susede2_ed25519; t=1680512553; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=H/XfQd8fVtvMaYRJ3MqFrh063YV2myWVKykIZT6ZM7U=; b=exZeugFNvqJrZmpMRpF3CYPOWqrwyM2Jl+piycRG/BM/gdHSiE3sn7R4rhekoLmsBKtNkB DcqOFMA8QsR+Q1AQ== Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by imap2.suse-dmz.suse.de (Postfix) with ESMTPS id E892B13416; Mon, 3 Apr 2023 09:02:32 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id 39qrNyiWKmTIVQAAMHmgww (envelope-from ); Mon, 03 Apr 2023 09:02:32 +0000 Message-ID: <200bdb15-2621-2ba3-fc04-5fd20821f871@suse.cz> Date: Mon, 3 Apr 2023 11:02:28 +0200 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.9.0 From: =?UTF-8?Q?Martin_Li=c5=a1ka?= Subject: [PATCH] ipa: propagate attributes for target attribute clones To: gcc-patches@gcc.gnu.org Content-Language: en-US Cc: "H.J. Lu" Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-Spam-Status: No, score=-11.5 required=5.0 tests=BAYES_00,DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,GIT_PATCH_0,SPF_HELO_NONE,SPF_SOFTFAIL,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 List-Id: Hi. The patch propagates noreturn attribute for MV functions. However, I noticed we've got the following ICE when we do the same for TREE_READONLY attr: $ cat tc.c double bar() __attribute__((target_clones("avx,avx2,avx512f,default"))); double bar() { return 1.2f; } int foo() { return (int)bar(); } $ ./xgcc -B. ~/Programming/testcases/tc.c -O3 -c -fprofile-generate /home/marxin/Programming/testcases/tc.c: In function ‘foo’: /home/marxin/Programming/testcases/tc.c:4:5: error: virtual definition of statement not up to date 4 | int foo() { return (int)bar(); } | ^~~ _1 = bar (); during GIMPLE pass: fixup_cfg Thus my ambition is to propagate only noreturn attr. Patch can bootstrap on x86_64-linux-gnu and survives regression tests. Ready to be installed? Thanks, Martin PR ipa/106816 gcc/ChangeLog: * config/i386/i386-features.cc (ix86_get_function_versions_dispatcher): Propagate function attributes for clones. gcc/testsuite/ChangeLog: * g++.target/i386/pr106816.C: New test. Co-Authored-By: H.J. Lu --- gcc/config/i386/i386-features.cc | 1 + gcc/testsuite/g++.target/i386/pr106816.C | 23 +++++++++++++++++++++++ 2 files changed, 24 insertions(+) create mode 100644 gcc/testsuite/g++.target/i386/pr106816.C diff --git a/gcc/config/i386/i386-features.cc b/gcc/config/i386/i386-features.cc index c09abf8fc20..f2b0d59a73c 100644 --- a/gcc/config/i386/i386-features.cc +++ b/gcc/config/i386/i386-features.cc @@ -3379,6 +3379,7 @@ ix86_get_function_versions_dispatcher (void *decl) /* Right now, the dispatching is done via ifunc. */ dispatch_decl = make_dispatcher_decl (default_node->decl); TREE_NOTHROW (dispatch_decl) = TREE_NOTHROW (fn); + TREE_THIS_VOLATILE (dispatch_decl) = TREE_THIS_VOLATILE (fn); dispatcher_node = cgraph_node::get_create (dispatch_decl); gcc_assert (dispatcher_node != NULL); diff --git a/gcc/testsuite/g++.target/i386/pr106816.C b/gcc/testsuite/g++.target/i386/pr106816.C new file mode 100644 index 00000000000..0f5cc1f13dd --- /dev/null +++ b/gcc/testsuite/g++.target/i386/pr106816.C @@ -0,0 +1,23 @@ +// PR ipa/106816 + +// { dg-do compile } +// { dg-require-ifunc "" } +// { dg-options "-O2 -fdump-tree-optimized" } + +__attribute__((noreturn, target("default"))) void f() +{ + for (;;) {} +} + +__attribute__((noreturn, target("sse4.2,bmi"))) void f() +{ + for (;;) {} +} + +int main() +{ + f(); + return 12345; +} + +/* { dg-final { scan-tree-dump-not "12345" "optimized" } } */ -- 2.40.0