head 1.1; branch 1.1.1; access; symbols netbsd-11-0-RC5:1.1.1.2 netbsd-11-0-RC4:1.1.1.2 netbsd-11-0-RC3:1.1.1.2 netbsd-11-0-RC2:1.1.1.2 netbsd-11-0-RC1:1.1.1.2 gcc-14-3-0:1.1.1.3 perseant-exfatfs-base-20250801:1.1.1.2 netbsd-11:1.1.1.2.0.10 netbsd-11-base:1.1.1.2 gcc-12-5-0:1.1.1.2 netbsd-10-1-RELEASE:1.1.1.2 perseant-exfatfs-base-20240630:1.1.1.2 gcc-12-4-0:1.1.1.2 perseant-exfatfs:1.1.1.2.0.8 perseant-exfatfs-base:1.1.1.2 netbsd-10-0-RELEASE:1.1.1.2 netbsd-10-0-RC6:1.1.1.2 netbsd-10-0-RC5:1.1.1.2 netbsd-10-0-RC4:1.1.1.2 netbsd-10-0-RC3:1.1.1.2 netbsd-10-0-RC2:1.1.1.2 netbsd-10-0-RC1:1.1.1.2 gcc-12-3-0:1.1.1.2 gcc-10-5-0:1.1.1.2 netbsd-10:1.1.1.2.0.6 netbsd-10-base:1.1.1.2 gcc-10-4-0:1.1.1.2 cjep_sun2x-base1:1.1.1.2 cjep_sun2x:1.1.1.2.0.4 cjep_sun2x-base:1.1.1.2 cjep_staticlib_x-base1:1.1.1.2 cjep_staticlib_x:1.1.1.2.0.2 cjep_staticlib_x-base:1.1.1.2 gcc-10-3-0:1.1.1.2 gcc-9-3-0:1.1.1.1 FSF:1.1.1; locks; strict; comment @# @; 1.1 date 2020.09.05.07.52.20; author mrg; state Exp; branches 1.1.1.1; next ; commitid ZRYA7IOuwfMjAPmC; 1.1.1.1 date 2020.09.05.07.52.20; author mrg; state Exp; branches; next 1.1.1.2; commitid ZRYA7IOuwfMjAPmC; 1.1.1.2 date 2021.04.10.22.10.13; author mrg; state Exp; branches; next 1.1.1.3; commitid eC4g0MRpqTvEkNOC; 1.1.1.3 date 2025.09.13.23.45.57; author mrg; state Exp; branches; next ; commitid KwhwN4krNWa6XBaG; desc @@ 1.1 log @Initial revision @ text @#! /bin/sh # Compare copies of two given object files. # Copyright (C) 2007, 2008, 2009, 2010, 2012 Free Software Foundation # Originally by Alexandre Oliva # Modified for LTO bootstrap by Richard Biener # This file is part of GCC. # GCC is free software; you can redistribute it and/or modify it under # the terms of the GNU General Public License as published by the Free # Software Foundation; either version 3, or (at your option) any later # version. # GCC is distributed in the hope that it will be useful, but WITHOUT # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY # or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public # License for more details. # You should have received a copy of the GNU General Public License # along with GCC; see the file COPYING3. If not see # . rm='rm -f' case $1 in -p | --preserve) rm='echo preserving' shift ;; esac if test $# != 2; then echo 'usage: compare-lto file1.o file2.o' >&2 exit 1 fi if test ! -f "$1"; then echo "$1" does not exist >&2 exit 1 fi if test ! -f "$2"; then echo "$2" does not exist >&2 exit 1 fi suf1=stripped while test -f "$1.$suf1"; do suf1=$suf1. done suf2=stripped while test -f "$2.$suf2"; do suf2=$suf2. done trap 'rm -f "$1.$suf1" "$2.$suf2"' 0 1 2 15 if cmp "$1" "$2"; then status=0 else status=1 cmd= for t in objdump readelf eu-readelf; do if ($t --help) 2>&1 | grep ' --\[*section-\]*headers' > /dev/null; then cmd=$t break fi done # If there are LTO option sections, try to strip them off. if test "x$cmd" = "x" || $cmd --section-headers "$1" | grep '.gnu.lto_.opts' > /dev/null || $cmd --section-headers "$2" | grep '.gnu.lto_.opts' > /dev/null ; then echo stripping off LTO option section, then retrying >&2 seclist=".gnu.lto_.opts" rsopts=`for sec in $seclist; do echo " --remove-section $sec"; done` if (objcopy -v) 2>&1 | grep ' --remove-section' > /dev/null; then objcopy $rsopts "$1" "$1.$suf1" objcopy $rsopts "$2" "$2.$suf2" elif (strip --help) 2>&1 | grep ' --remove-section' > /dev/null; then cp "$1" "$1.$suf1" strip $rsopts "$1.$suf1" cp "$2" "$2.$suf2" strip $rsopts "$2.$suf2" else echo failed to strip off LTO option section >&2 fi trap 'rm -f "$1.$suf1" "$2.$suf2"' 0 1 2 15 if cmp "$1.$suf1" "$2.$suf2"; then status=0 else status=1 fi fi fi $rm "$1.$suf1" "$2.$suf2" trap "exit $status; exit" 0 1 2 15 exit $status @ 1.1.1.1 log @initial import of GCC 9.3.0. changes include: - live patching support - shell completion help - generally better diagnostic output (less verbose/more useful) - diagnostics and optimisation choices can be emitted in json - asan memory usage reduction - many general, and specific to switch, inter-procedure, profile and link-time optimisations. from the release notes: "Overall compile time of Firefox 66 and LibreOffice 6.2.3 on an 8-core machine was reduced by about 5% compared to GCC 8.3" - OpenMP 5.0 support - better spell-guesser - partial experimental support for c2x and c++2a - c++17 is no longer experimental - arm AAPCS GCC 6-8 structure passing bug fixed, may cause incompatibility (restored compat with GCC 5 and earlier.) - openrisc support @ text @@ 1.1.1.2 log @initial import of GCC 10.3.0. main changes include: caveats: - ABI issue between c++14 and c++17 fixed - profile mode is removed from libstdc++ - -fno-common is now the default new features: - new flags -fallocation-dce, -fprofile-partial-training, -fprofile-reproducible, -fprofile-prefix-path, and -fanalyzer - many new compile and link time optimisations - enhanced drive optimisations - openacc 2.6 support - openmp 5.0 features - new warnings: -Wstring-compare and -Wzero-length-bounds - extended warnings: -Warray-bounds, -Wformat-overflow, -Wrestrict, -Wreturn-local-addr, -Wstringop-overflow, -Warith-conversion, -Wmismatched-tags, and -Wredundant-tags - some likely C2X features implemented - more C++20 implemented - many new arm & intel CPUs known hundreds of reported bugs are fixed. full list of changes can be found at: https://gcc.gnu.org/gcc-10/changes.html @ text @d35 1 a35 1 echo 'usage: compare-lto file1 file2' >&2 a103 19 # PE-COFF executables are timestamped so skip leading bytes for them. else case "$1" in *.exe) if cmp -i 256 "$1" "$2"; then status=0 else status=1 fi ;; *) if test -f "$1.exe" && cmp -i 256 "$1.exe" "$2.exe"; then status=0 else status=1 fi ;; esac @ 1.1.1.3 log @initial import of GCC 14.3.0. major changes in GCC 13: - improved sanitizer - zstd debug info compression - LTO improvements - SARIF based diagnostic support - new warnings: -Wxor-used-as-pow, -Wenum-int-mismatch, -Wself-move, -Wdangling-reference - many new -Wanalyzer* specific warnings - enhanced warnings: -Wpessimizing-move, -Wredundant-move - new attributes to mark file descriptors, c++23 "assume" - several C23 features added - several C++23 features added - many new features for Arm, x86, RISC-V major changes in GCC 14: - more strict C99 or newer support - ia64* marked deprecated (but seemingly still in GCC 15.) - several new hardening features - support for "hardbool", which can have user supplied values of true/false - explicit support for stack scrubbing upon function exit - better auto-vectorisation support - added clang-compatible __has_feature and __has_extension - more C23, including -std=c23 - several C++26 features added - better diagnostics in C++ templates - new warnings: -Wnrvo, Welaborated-enum-base - many new features for Arm, x86, RISC-V - possible ABI breaking change for SPARC64 and small structures with arrays of floats. @ text @d5 1 a5 1 # Copyright (C) 2007-2024 Free Software Foundation, Inc. @