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[8.43.85.97]) by mx.google.com with ESMTPS id n13-20020a170906840d00b0076ed46e4445si4676570ejx.810.2022.09.22.05.27.28 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 22 Sep 2022 05:27:28 -0700 (PDT) Received-SPF: pass (google.com: domain of gcc-patches-bounces+ouuuleilei=gmail.com@gcc.gnu.org designates 8.43.85.97 as permitted sender) client-ip=8.43.85.97; Authentication-Results: mx.google.com; dkim=pass header.i=@suse.cz header.s=susede2_rsa header.b=qE5PGEEb; dkim=neutral (no key) header.i=@suse.cz header.s=susede2_ed25519; spf=pass (google.com: domain of gcc-patches-bounces+ouuuleilei=gmail.com@gcc.gnu.org designates 8.43.85.97 as permitted sender) smtp.mailfrom="gcc-patches-bounces+ouuuleilei=gmail.com@gcc.gnu.org" Received: from server2.sourceware.org (localhost [IPv6:::1]) by sourceware.org (Postfix) with ESMTP id 889CD3857C62 for ; Thu, 22 Sep 2022 12:27:26 +0000 (GMT) X-Original-To: gcc-patches@gcc.gnu.org Delivered-To: gcc-patches@gcc.gnu.org Received: from smtp-out2.suse.de (smtp-out2.suse.de [195.135.220.29]) by sourceware.org (Postfix) with ESMTPS id C5CCD3858299 for ; Thu, 22 Sep 2022 12:26:40 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.1 sourceware.org C5CCD3858299 Authentication-Results: sourceware.org; dmarc=none (p=none dis=none) header.from=suse.cz Authentication-Results: sourceware.org; spf=pass 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-out2.suse.de (Postfix) with ESMTPS id A17B21F920; Thu, 22 Sep 2022 12:26:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.cz; s=susede2_rsa; t=1663849599; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=ZifnDrEEmE+e7V+hVnf3KbabD4voYd+A6HrHPu+O04k=; b=qE5PGEEbjgJWmYBu7EMqZmDxlAATE6NtCfLB2uSbzZRw1UZgK7/j20uLgkqo4GwYFwQrOo uNnWxN/Yy0UDdws5yELM39EGUyKxbQq/ab6YTVr2xs7InxCTksG+zGPnd0IIgXIMYEkEW8 6hQBi0Dbi/ZoMn91sCSR0sx9lOD2+Io= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.cz; s=susede2_ed25519; t=1663849599; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=ZifnDrEEmE+e7V+hVnf3KbabD4voYd+A6HrHPu+O04k=; b=E1q28jqN+XI26BbxmVZaanlz7PnnXoIUFDpxfd3uaHTgZw1JPTRmJez3xigq2lbRbyPmoE mEJxdWxojxll6CCA== 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 85CD61346B; Thu, 22 Sep 2022 12:26:39 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id 93a2H39ULGMhWAAAMHmgww (envelope-from ); Thu, 22 Sep 2022 12:26:39 +0000 Message-ID: <3f360308-03b5-0c2c-6b8f-dda38f5b6121@suse.cz> Date: Thu, 22 Sep 2022 14:26:39 +0200 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.2.2 Subject: [PATCH v2] remove -gz=zlib-gnu option value Content-Language: en-US From: =?utf-8?q?Martin_Li=C5=A1ka?= To: Richard Biener References: <20220701065725.3839926-1-maskray@google.com> <20220701072057.f2ojdm4pdm5257ni@google.com> <6cfedac0-06b5-47d9-e2f8-0cc5b8c19244@suse.cz> <5e5b1311-2db1-656f-d9de-c180224802ac@suse.cz> In-Reply-To: <5e5b1311-2db1-656f-d9de-c180224802ac@suse.cz> 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, KAM_ASCII_DIVIDERS, SPF_HELO_NONE, 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: 2.1.29 Precedence: list List-Id: Gcc-patches mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Fangrui Song , GCC Patches Errors-To: gcc-patches-bounces+ouuuleilei=gmail.com@gcc.gnu.org Sender: "Gcc-patches" X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1744668029361167082?= X-GMAIL-MSGID: =?utf-8?q?1744672809506199979?= Hi. I have a better version of the patch where section compression detection is based on ld --help, rather than a particular binutils version. That's much easier and all ld, ld.bfd and mold use the very same option. Ready to be installed? Thanks, Martin From d2314c942c5c19a5fd5d6b2d45750d863636873c Mon Sep 17 00:00:00 2001 From: Martin Liska Date: Thu, 22 Sep 2022 13:04:57 +0200 Subject: [PATCH] remove -gz=zlib-gnu option value The option value is legacy and probably not used at all, thus ignore it. gcc/ChangeLog: * configure: Regenerate. * configure.ac: Simplify to gcc_cv_ld_compress_debug={0,1} and gcc_cv_as_compress_debug={0,1}. * doc/invoke.texi: Document the removal. * gcc.cc (LINK_COMPRESS_DEBUG_SPEC): Simplify and ignore zlib-gnu. (ASM_COMPRESS_DEBUG_SPEC): Likewise. Co-Authored-By: Fangrui Song --- gcc/configure | 49 +++++---------------------------------------- gcc/configure.ac | 49 +++++---------------------------------------- gcc/doc/invoke.texi | 11 +++++----- gcc/gcc.cc | 26 +++++------------------- 4 files changed, 20 insertions(+), 115 deletions(-) diff --git a/gcc/configure b/gcc/configure index 817d765568e..70a013e9a30 100755 --- a/gcc/configure +++ b/gcc/configure @@ -29727,16 +29727,9 @@ else if $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null then gcc_cv_as_compress_debug=0 - # Since binutils 2.26, gas supports --compress-debug-sections=type, + # Since binutils 2.26, gas supports --compress-debug-sections=zlib, # defaulting to the ELF gABI format. - elif $gcc_cv_as --compress-debug-sections=zlib-gnu -o conftest.o conftest.s > /dev/null 2>&1 - then - gcc_cv_as_compress_debug=2 - gcc_cv_as_compress_debug_option="--compress-debug-sections" - gcc_cv_as_no_compress_debug_option="--nocompress-debug-sections" - # Before binutils 2.26, gas only supported --compress-debug-options and - # emitted the traditional GNU format. - elif $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s > /dev/null 2>&1 + elif $gcc_cv_as --compress-debug-sections=zlib -o conftest.o conftest.s > /dev/null 2>&1 then gcc_cv_as_compress_debug=1 gcc_cv_as_compress_debug_option="--compress-debug-sections" @@ -30254,48 +30247,16 @@ $as_echo "$gcc_cv_ld_eh_gc_sections_bug" >&6; } { $as_echo "$as_me:${as_lineno-$LINENO}: checking linker for compressed debug sections" >&5 $as_echo_n "checking linker for compressed debug sections... " >&6; } -# gold/gld support compressed debug sections since binutils 2.19/2.21 -# In binutils 2.26, gld gained support for the ELF gABI format. -if test $in_tree_ld = yes ; then - gcc_cv_ld_compress_debug=0 - if test $ld_is_mold = yes; then - gcc_cv_ld_compress_debug=3 - gcc_cv_ld_compress_debug_option="--compress-debug-sections" - elif test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 19 -o "$gcc_cv_gld_major_version" -gt 2 \ - && test $in_tree_ld_is_elf = yes && test $ld_is_gold = yes; then - gcc_cv_ld_compress_debug=2 - gcc_cv_ld_compress_debug_option="--compress-debug-sections" - elif test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 26 -o "$gcc_cv_gld_major_version" -gt 2 \ - && test $in_tree_ld_is_elf = yes && test $ld_is_gold = no; then - gcc_cv_ld_compress_debug=3 - gcc_cv_ld_compress_debug_option="--compress-debug-sections" - elif test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2 \ - && test $in_tree_ld_is_elf = yes; then +# GNU ld/gold support --compressed-debug-sections=zlib since binutils 2.26. +if $gcc_cv_ld --help 2>&1 | grep -- '--compress-debug-sections.*\' > /dev/null; then gcc_cv_ld_compress_debug=1 - fi -elif echo "$ld_ver" | grep GNU > /dev/null; then - if test $ld_is_mold = yes; then - gcc_cv_ld_compress_debug=3 - gcc_cv_ld_compress_debug_option="--compress-debug-sections" - elif test "$ld_vers_major" -lt 2 \ - || test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 21; then - gcc_cv_ld_compress_debug=0 - elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 26; then - gcc_cv_ld_compress_debug=1 - else - gcc_cv_ld_compress_debug=3 - gcc_cv_ld_compress_debug_option="--compress-debug-sections" - fi - if test $ld_is_gold = yes; then - gcc_cv_ld_compress_debug=2 gcc_cv_ld_compress_debug_option="--compress-debug-sections" - fi else case "${target}" in *-*-solaris2*) # Introduced in Solaris 11.2. if $gcc_cv_ld --help 2>&1 | grep -- '-z compress-sections' > /dev/null; then - gcc_cv_ld_compress_debug=3 + gcc_cv_ld_compress_debug=1 gcc_cv_ld_compress_debug_option="-z compress-sections" else gcc_cv_ld_compress_debug=0 diff --git a/gcc/configure.ac b/gcc/configure.ac index 59f205a1781..96e10d7c194 100644 --- a/gcc/configure.ac +++ b/gcc/configure.ac @@ -5732,16 +5732,9 @@ gcc_GAS_CHECK_FEATURE([compressed debug sections], if $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null then gcc_cv_as_compress_debug=0 - # Since binutils 2.26, gas supports --compress-debug-sections=type, + # Since binutils 2.26, gas supports --compress-debug-sections=zlib, # defaulting to the ELF gABI format. - elif $gcc_cv_as --compress-debug-sections=zlib-gnu -o conftest.o conftest.s > /dev/null 2>&1 - then - gcc_cv_as_compress_debug=2 - gcc_cv_as_compress_debug_option="--compress-debug-sections" - gcc_cv_as_no_compress_debug_option="--nocompress-debug-sections" - # Before binutils 2.26, gas only supported --compress-debug-options and - # emitted the traditional GNU format. - elif $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s > /dev/null 2>&1 + elif $gcc_cv_as --compress-debug-sections=zlib -o conftest.o conftest.s > /dev/null 2>&1 then gcc_cv_as_compress_debug=1 gcc_cv_as_compress_debug_option="--compress-debug-sections" @@ -6130,49 +6123,17 @@ fi AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections_bug) AC_MSG_CHECKING(linker for compressed debug sections) -# gold/gld support compressed debug sections since binutils 2.19/2.21 -# In binutils 2.26, gld gained support for the ELF gABI format. -if test $in_tree_ld = yes ; then - gcc_cv_ld_compress_debug=0 - if test $ld_is_mold = yes; then - gcc_cv_ld_compress_debug=3 - gcc_cv_ld_compress_debug_option="--compress-debug-sections" - elif test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 19 -o "$gcc_cv_gld_major_version" -gt 2 \ - && test $in_tree_ld_is_elf = yes && test $ld_is_gold = yes; then - gcc_cv_ld_compress_debug=2 - gcc_cv_ld_compress_debug_option="--compress-debug-sections" - elif test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 26 -o "$gcc_cv_gld_major_version" -gt 2 \ - && test $in_tree_ld_is_elf = yes && test $ld_is_gold = no; then - gcc_cv_ld_compress_debug=3 - gcc_cv_ld_compress_debug_option="--compress-debug-sections" - elif test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2 \ - && test $in_tree_ld_is_elf = yes; then +# GNU ld/gold support --compressed-debug-sections=zlib since binutils 2.26. +if $gcc_cv_ld --help 2>&1 | grep -- '--compress-debug-sections.*\' > /dev/null; then gcc_cv_ld_compress_debug=1 - fi -elif echo "$ld_ver" | grep GNU > /dev/null; then - if test $ld_is_mold = yes; then - gcc_cv_ld_compress_debug=3 - gcc_cv_ld_compress_debug_option="--compress-debug-sections" - elif test "$ld_vers_major" -lt 2 \ - || test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 21; then - gcc_cv_ld_compress_debug=0 - elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 26; then - gcc_cv_ld_compress_debug=1 - else - gcc_cv_ld_compress_debug=3 - gcc_cv_ld_compress_debug_option="--compress-debug-sections" - fi - if test $ld_is_gold = yes; then - gcc_cv_ld_compress_debug=2 gcc_cv_ld_compress_debug_option="--compress-debug-sections" - fi else changequote(,)dnl case "${target}" in *-*-solaris2*) # Introduced in Solaris 11.2. if $gcc_cv_ld --help 2>&1 | grep -- '-z compress-sections' > /dev/null; then - gcc_cv_ld_compress_debug=3 + gcc_cv_ld_compress_debug=1 gcc_cv_ld_compress_debug_option="-z compress-sections" else gcc_cv_ld_compress_debug=0 diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi index aa5655764a0..9fdcb5f60d9 100644 --- a/gcc/doc/invoke.texi +++ b/gcc/doc/invoke.texi @@ -11077,12 +11077,11 @@ location views are enabled. Produce compressed debug sections in DWARF format, if that is supported. If @var{type} is not given, the default type depends on the capabilities of the assembler and linker used. @var{type} may be one of -@samp{none} (don't compress debug sections), @samp{zlib} (use zlib -compression in ELF gABI format), or @samp{zlib-gnu} (use zlib -compression in traditional GNU format). If the linker doesn't support -writing compressed debug sections, the option is rejected. Otherwise, -if the assembler does not support them, @option{-gz} is silently ignored -when producing object files. +@samp{none} (don't compress debug sections), or @samp{zlib} (use zlib +compression in ELF gABI format). If the linker doesn't support writing +compressed debug sections, the option is rejected. Otherwise, if the +assembler does not support them, @option{-gz} is silently ignored when +producing object files. @item -femit-struct-debug-baseonly @opindex femit-struct-debug-baseonly diff --git a/gcc/gcc.cc b/gcc/gcc.cc index 15846116795..7578988efa9 100644 --- a/gcc/gcc.cc +++ b/gcc/gcc.cc @@ -831,21 +831,11 @@ proper position among the other output files. */ #define LINK_COMPRESS_DEBUG_SPEC \ " %{gz*:%e-gz is not supported in this configuration} " #elif HAVE_LD_COMPRESS_DEBUG == 1 -/* GNU style on input, GNU ld options. Reject, not useful. */ -#define LINK_COMPRESS_DEBUG_SPEC \ - " %{gz*:%e-gz is not supported in this configuration} " -#elif HAVE_LD_COMPRESS_DEBUG == 2 -/* GNU style, GNU gold options. */ -#define LINK_COMPRESS_DEBUG_SPEC \ - " %{gz|gz=zlib-gnu:" LD_COMPRESS_DEBUG_OPTION "=zlib}" \ - " %{gz=none:" LD_COMPRESS_DEBUG_OPTION "=none}" \ - " %{gz=zlib:%e-gz=zlib is not supported in this configuration} " -#elif HAVE_LD_COMPRESS_DEBUG == 3 /* ELF gABI style. */ #define LINK_COMPRESS_DEBUG_SPEC \ " %{gz|gz=zlib:" LD_COMPRESS_DEBUG_OPTION "=zlib}" \ " %{gz=none:" LD_COMPRESS_DEBUG_OPTION "=none}" \ - " %{gz=zlib-gnu:" LD_COMPRESS_DEBUG_OPTION "=zlib-gnu} " + " %{gz=zlib-gnu:}" /* Ignore silently zlib-gnu option value. */ #else #error Unknown value for HAVE_LD_COMPRESS_DEBUG. #endif @@ -885,31 +875,25 @@ proper position among the other output files. */ #endif /* Assembler options for compressed debug sections. */ -#if HAVE_LD_COMPRESS_DEBUG < 2 +#if HAVE_LD_COMPRESS_DEBUG == 0 /* Reject if the linker cannot write compressed debug sections. */ #define ASM_COMPRESS_DEBUG_SPEC \ " %{gz*:%e-gz is not supported in this configuration} " -#else /* HAVE_LD_COMPRESS_DEBUG >= 2 */ +#else /* HAVE_LD_COMPRESS_DEBUG >= 1 */ #if HAVE_AS_COMPRESS_DEBUG == 0 /* No assembler support. Ignore silently. */ #define ASM_COMPRESS_DEBUG_SPEC \ " %{gz*:} " #elif HAVE_AS_COMPRESS_DEBUG == 1 -/* GNU style, GNU as options. */ -#define ASM_COMPRESS_DEBUG_SPEC \ - " %{gz|gz=zlib-gnu:" AS_COMPRESS_DEBUG_OPTION "}" \ - " %{gz=none:" AS_NO_COMPRESS_DEBUG_OPTION "}" \ - " %{gz=zlib:%e-gz=zlib is not supported in this configuration} " -#elif HAVE_AS_COMPRESS_DEBUG == 2 /* ELF gABI style. */ #define ASM_COMPRESS_DEBUG_SPEC \ " %{gz|gz=zlib:" AS_COMPRESS_DEBUG_OPTION "=zlib}" \ " %{gz=none:" AS_COMPRESS_DEBUG_OPTION "=none}" \ - " %{gz=zlib-gnu:" AS_COMPRESS_DEBUG_OPTION "=zlib-gnu} " + " %{gz=zlib-gnu:}" /* Ignore silently zlib-gnu option value. */ #else #error Unknown value for HAVE_AS_COMPRESS_DEBUG. #endif -#endif /* HAVE_LD_COMPRESS_DEBUG >= 2 */ +#endif /* HAVE_LD_COMPRESS_DEBUG >= 1 */ /* Define ASM_DEBUG_SPEC to be a spec suitable for translating '-g' to the assembler, when compiling assembly sources only. */ -- 2.37.3