From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wm1-x32b.google.com (mail-wm1-x32b.google.com [IPv6:2a00:1450:4864:20::32b]) by sourceware.org (Postfix) with ESMTPS id 9786F3858C2F for ; Thu, 25 Aug 2022 13:58:46 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.1 sourceware.org 9786F3858C2F Authentication-Results: sourceware.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: sourceware.org; spf=pass smtp.mailfrom=gmail.com Received: by mail-wm1-x32b.google.com with SMTP id k17so10314836wmr.2 for ; Thu, 25 Aug 2022 06:58:46 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=cc:to:subject:message-id:date:from:in-reply-to:references :mime-version:from:to:cc; bh=CxlX+gQswZrmHvYvAk7uVfvEZmc27PktH6USyhPXoLI=; b=Mzu10S4ObRpHuweWL/HyXvk9Pw1h/+MW6fpfdF2ivto4WMJOwnaRxCPU5ne+dg8hdA mp9Cn7CQ64P8+yxcxXte//kGBSLBziu75hWxQfUuWsvqpKWLX0i79+vI2gR41MJFONl/ laM/JsyM0ZFIVahoPURJE1hdidQeqT630hN0b+zZiTlSst8oftN+tBSSt2smISbII2aC 3eiwyWu0OBxKUeh+z+GmTqkjGZZ67aoFa0c9RO7ShJNBroKhWjwKLnEQv0C8eCCMrxHY Lgl3tcA39ljHvpLxgnrNsLhjtA2nsCR/kWd9zY0iERYAZ+mO7/BBNm458GTy5YLlfyaB GNKQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=cc:to:subject:message-id:date:from:in-reply-to:references :mime-version:x-gm-message-state:from:to:cc; bh=CxlX+gQswZrmHvYvAk7uVfvEZmc27PktH6USyhPXoLI=; b=jwH8l5Uqq5l3vx2WH21WTEbJAEhOyTTr2EY4Cm7oxB2sqKB5BohYSrl3l2Y2k8F8py pEbB3TDEYc26FrrTp5nPBDlr76uj0TIV2fAjvxUgSC1nmYzm1lFvs4sjzkYNT8H4QIy5 5nvLt1cqeAF7pYpGKxVuNHbPE8ouZRzaYcsJ92i6jO5wyOPoqt/7h2laSWYxf1+ReuOa TmkcH8cJmtLnm7JnT4RGikYEhwwOAwCPo5WxrC/hEIqskHNEU4NWIP9aZZwx9ce++TCv 9TNHkTKgBfmNLDAbm+Gx33aHNu74mpfJ3pKKtBTiJyi6coyDRmd96UimAo9r05TXpujz 2u0g== X-Gm-Message-State: ACgBeo1mSvmMUcBOXpAAJTGXUZfT0sO3FzYIa1ZIpuBvef2+mRtQmB+L 3RzYtE5J5LZcau1fpNUBSPABALw0BiBecgbWm2w= X-Google-Smtp-Source: AA6agR42ahNGFRRL5vVZtgzQQhoIUGotqXdirXfi8D21tovGGWYju2KtZE3Oqm3A37wOA/qa58wGweQrQg6ODQyVOtQ= X-Received: by 2002:a05:600c:4f45:b0:3a6:9d3c:47c9 with SMTP id m5-20020a05600c4f4500b003a69d3c47c9mr1588512wmq.80.1661435925104; Thu, 25 Aug 2022 06:58:45 -0700 (PDT) MIME-Version: 1.0 References: In-Reply-To: From: Mathieu Malaterre Date: Thu, 25 Aug 2022 15:58:34 +0200 Message-ID: Subject: Re: Warning: conditional outside an IT block for Thumb. To: Richard Earnshaw Cc: gcc-help Content-Type: text/plain; charset="UTF-8" X-Spam-Status: No, score=-0.6 required=5.0 tests=BAYES_00,DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FREEMAIL_FROM,RCVD_IN_DNSWL_NONE,SPF_HELO_NONE,SPF_PASS,TXREP,T_SCC_BODY_TEXT_LINE 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: On Thu, Aug 25, 2022 at 3:48 PM Mathieu Malaterre wrote: > > Hi Richard, > > Thanks for the kind help. > > On Thu, Aug 25, 2022 at 12:28 PM Richard Earnshaw > wrote: > > > > > > > > On 25/08/2022 07:40, Mathieu Malaterre via Gcc-help wrote: > > > Hi all, > > > > > > I am seeing a flood of warnings when compiling openvdb+tbb on Debian/armel: > > > > > > [...] > > > [ 2%] Building CXX object > > > openvdb/openvdb/CMakeFiles/openvdb_shared.dir/io/Archive.cc.o > > > cd /<>/obj-arm-linux-gnueabi/openvdb/openvdb && > > > /usr/bin/c++ -DBOOST_ALL_NO_LIB -DBOOST_IOSTREAMS_DYN_LINK > > > -DOPENVDB_DLL -DOPENVDB_PRIVATE -DOPENVDB_USE_LOG4CPLUS > > > -Dopenvdb_shared_EXPORTS -I/< > > GBUILDDIR>>/openvdb/openvdb/.. > > > -I/<>/obj-arm-linux-gnueabi/openvdb/openvdb > > > -I/<>/obj-arm-linux-gnueabi/openvdb/openvdb/openvdb > > > -I/<>/openvdb/openvdb/. -I/usr/include/Imat > > > h -g -O2 -ffile-prefix-map=/<>=. -fstack-protector-strong > > > -Wformat -Werror=format-security -Wno-psabi -fvisibility=hidden > > > -fvisibility-inlines-hidden -Wa,-mimplicit-it=thumb -Wdate-time > > > -D_FORTIFY > > > _SOURCE=2 -fPIC -std=c++17 -MD -MT > > > openvdb/openvdb/CMakeFiles/openvdb_shared.dir/Grid.cc.o -MF > > > CMakeFiles/openvdb_shared.dir/Grid.cc.o.d -o > > > CMakeFiles/openvdb_shared.dir/Grid.cc.o -c /<>/openvdb/o > > > penvdb/Grid.cc > > > cd /<>/obj-arm-linux-gnueabi/openvdb/openvdb && > > > /usr/bin/c++ -DBOOST_ALL_NO_LIB -DBOOST_IOSTREAMS_DYN_LINK > > > -DOPENVDB_DLL -DOPENVDB_PRIVATE -DOPENVDB_USE_LOG4CPLUS > > > -Dopenvdb_shared_EXPORTS -I/< > > GBUILDDIR>>/openvdb/openvdb/.. > > > -I/<>/obj-arm-linux-gnueabi/openvdb/openvdb > > > -I/<>/obj-arm-linux-gnueabi/openvdb/openvdb/openvdb > > > -I/<>/openvdb/openvdb/. -I/usr/include/Imat > > > h -g -O2 -ffile-prefix-map=/<>=. -fstack-protector-strong > > > -Wformat -Werror=format-security -Wno-psabi -fvisibility=hidden > > > -fvisibility-inlines-hidden -Wa,-mimplicit-it=thumb -Wdate-time > > > -D_FORTIFY > > > _SOURCE=2 -fPIC -std=c++17 -MD -MT > > > openvdb/openvdb/CMakeFiles/openvdb_shared.dir/io/Archive.cc.o -MF > > > CMakeFiles/openvdb_shared.dir/io/Archive.cc.o.d -o > > > CMakeFiles/openvdb_shared.dir/io/Archive.cc.o -c /< > > ILDDIR>>/openvdb/openvdb/io/Archive.cc > > > /tmp/ccFlliCl.s: Assembler messages: > > > /tmp/ccFlliCl.s:294: Warning: conditional outside an IT block for Thumb. > > > /tmp/ccFlliCl.s:338: Warning: conditional outside an IT block for Thumb. > > > [...] > > > > > > There are so many warnings that it eventually times out the compilation. > > > > > > I could not find a way to tell gcc not to print a warning. Is there a > > > way to remove this warning ? > > > > The warning is coming from the assembler. But I don't think it should > > be just 'ignored'. You'll need to track down why it's happening at all. > > The most likely case is that there is some inlined assembly code > > somewhere that was written on the assumption that the compiler would be > > targeting the A32 state rather than the T32 state (thumb), but there's > > not enough information here to work out what's happened for sure. > > > > What we need is a snippet of the assembler output when compiled with > > debugging information, so that we can track back to the source code that > > is generating this. > > > > > > > > For reference the very large log: > > > > > > * https://buildd.debian.org/status/fetch.php?pkg=openvdb&arch=armel&ver=9.1.0-4&stamp=1661358853&raw=0 > > > > > > Thanks much, > > > > The log isn't much help, it's the contents of the file that's being > > assembled that will tell us what we need to know. > > I did add '-save-temps' to one TU compilation: > > % cd /home/malat/openvdb-9.1.0/obj-arm-linux-gnueabi/openvdb/openvdb > && /usr/bin/c++ -DBOOST_ALL_NO_LIB -DBOOST_IOSTREAMS_DYN_LINK > -DOPENVDB_DLL -DOPENVDB_PRIVATE -DOPENVDB_USE_LOG4CPLUS > -Dopenvdb_shared_EXPORTS > -I/home/malat/openvdb-9.1.0/openvdb/openvdb/.. > -I/home/malat/openvdb-9.1.0/obj-arm-linux-gnueabi/openvdb/openvdb > -I/home/malat/openvdb-9.1.0/obj-arm-linux-gnueabi/openvdb/openvdb/openvdb > -I/home/malat/openvdb-9.1.0/openvdb/openvdb/. -I/usr/include/Imath -g > -O2 -ffile-prefix-map=/home/malat/openvdb-9.1.0=. > -fstack-protector-strong -Wformat -Werror=format-security -Wno-psabi > -fvisibility=hidden -fvisibility-inlines-hidden > -Wa,-mimplicit-it=thumb -Wdate-time -D_FORTIFY_SOURCE=2 -fPIC > -std=c++17 -MD -MT > openvdb/openvdb/CMakeFiles/openvdb_shared.dir/io/Compression.cc.o -MF > CMakeFiles/openvdb_shared.dir/io/Compression.cc.o.d -o > CMakeFiles/openvdb_shared.dir/io/Compression.cc.o -save-temps -c > /home/malat/openvdb-9.1.0/openvdb/openvdb/io/Compression.cc > > Output is: > > % cd /home/malat/openvdb-9.1.0/obj-arm-linux-gnueabi/openvdb/openvdb > && /usr/bin/c++ -DBOOST_ALL_NO_LIB -DBOOST_IOSTREAMS_DYN_LINK > -DOPENVDB_DLL -DOPENVDB_PRIVATE -DOPENVDB_USE_LOG4CPLUS > -Dopenvdb_shared_EXPORTS > -I/home/malat/openvdb-9.1.0/openvdb/openvdb/.. > -I/home/malat/openvdb-9.1.0/obj-arm-linux-gnueabi/openvdb/openvdb > -I/home/malat/openvdb-9.1.0/obj-arm-linux-gnueabi/openvdb/openvdb/openvdb > -I/home/malat/openvdb-9.1.0/openvdb/openvdb/. -I/usr/include/Imath -g > -O2 -ffile-prefix-map=/home/malat/openvdb-9.1.0=. > -fstack-protector-strong -Wformat -Werror=format-security -Wno-psabi > -fvisibility=hidden -fvisibility-inlines-hidden > -Wa,-mimplicit-it=thumb -Wdate-time -D_FORTIFY_SOURCE=2 -fPIC > -std=c++17 -MD -MT > openvdb/openvdb/CMakeFiles/openvdb_shared.dir/io/Compression.cc.o -MF > CMakeFiles/openvdb_shared.dir/io/Compression.cc.o.d -o > CMakeFiles/openvdb_shared.dir/io/Compression.cc.o -save-temps -c > /home/malat/openvdb-9.1.0/openvdb/openvdb/io/Compression.cc > CMakeFiles/openvdb_shared.dir/io/Compression.cc.s: Assembler messages: > CMakeFiles/openvdb_shared.dir/io/Compression.cc.s:146: Warning: > conditional outside an IT block for Thumb. > CMakeFiles/openvdb_shared.dir/io/Compression.cc.s:162: Warning: > conditional outside an IT block for Thumb. > CMakeFiles/openvdb_shared.dir/io/Compression.cc.s:215: Warning: > conditional outside an IT block for Thumb. > CMakeFiles/openvdb_shared.dir/io/Compression.cc.s:330: Warning: > conditional outside an IT block for Thumb. > CMakeFiles/openvdb_shared.dir/io/Compression.cc.s:344: Warning: > conditional outside an IT block for Thumb. > CMakeFiles/openvdb_shared.dir/io/Compression.cc.s:352: Warning: > conditional outside an IT block for Thumb. > CMakeFiles/openvdb_shared.dir/io/Compression.cc.s:598: Warning: > conditional outside an IT block for Thumb. > CMakeFiles/openvdb_shared.dir/io/Compression.cc.s:768: Warning: > conditional outside an IT block for Thumb. > CMakeFiles/openvdb_shared.dir/io/Compression.cc.s:934: Warning: > conditional outside an IT block for Thumb. > [truncated] > > My gcc version is: > > % /usr/bin/c++ -v > Using built-in specs. > COLLECT_GCC=/usr/bin/c++ > COLLECT_LTO_WRAPPER=/usr/lib/gcc/arm-linux-gnueabi/12/lto-wrapper > Target: arm-linux-gnueabi > Configured with: ../src/configure -v --with-pkgversion='Debian > 12.2.0-1' --with-bugurl=file:///usr/share/doc/gcc-12/README.Bugs > --enable-languages=c,ada,c++,go,d,fortran,objc,obj-c++,m2 > --prefix=/usr --with-gcc-major-version-only --program-suffix=-12 > --program-prefix=arm-linux-gnueabi- --enable-shared > --enable-linker-build-id --libexecdir=/usr/lib > --without-included-gettext --enable-threads=posix --libdir=/usr/lib > --enable-nls --enable-clocale=gnu --enable-libstdcxx-debug > --enable-libstdcxx-time=yes --with-default-libstdcxx-abi=new > --enable-gnu-unique-object --disable-libitm --disable-libquadmath > --disable-libquadmath-support --enable-plugin --enable-default-pie > --with-system-zlib --enable-libphobos-checking=release > --with-target-system-zlib=auto --enable-objc-gc=auto > --enable-multiarch --disable-sjlj-exceptions --with-arch=armv5te > --with-float=soft --disable-werror --enable-checking=release > --build=arm-linux-gnueabi --host=arm-linux-gnueabi > --target=arm-linux-gnueabi > Thread model: posix > Supported LTO compression algorithms: zlib zstd > gcc version 12.2.0 (Debian 12.2.0-1) > > *.ii file: > https://people.debian.org/~malat/openvdb/Compression.cc.ii.xz > > > Once again thanks again for your time, I've removed: -Wa,-mimplicit-it=thumb from compilation line and it seems to be going much better sorry for the noise. This seems to have been a hack for armhf/Debian back in 2002...