Gentoo Websites Logo
Go to: Gentoo Home Documentation Forums Lists Bugs Planet Store Wiki Get Gentoo!
Bug 851756 - sys-devel/gcc[lto]: bootstrap comparison failure
Summary: sys-devel/gcc[lto]: bootstrap comparison failure
Status: RESOLVED OBSOLETE
Alias: None
Product: Gentoo Linux
Classification: Unclassified
Component: Current packages (show other bugs)
Hardware: All Linux
: Normal normal (vote)
Assignee: Gentoo Toolchain Maintainers
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2022-06-13 20:31 UTC by Stephan Hartmann (RETIRED)
Modified: 2023-08-24 19:36 UTC (History)
1 user (show)

See Also:
Package list:
Runtime testing required: ---


Attachments
gcc build logs (gcc-build-logs.tar.bz2,379.35 KB, application/octet-stream)
2022-06-13 20:31 UTC, Stephan Hartmann (RETIRED)
Details

Note You need to log in before you can comment on or make changes to this bug.
Description Stephan Hartmann (RETIRED) gentoo-dev 2022-06-13 20:31:26 UTC
Created attachment 784658 [details]
gcc build logs

Portage 3.0.30 (python 3.9.12-final-0, default/linux/amd64/17.1/no-multilib, gcc-9.3.0, glibc-2.32-r8, 5.15.41-gentoo x86_64)
=================================================================
System uname: Linux-5.15.41-gentoo-x86_64-12th_Gen_Intel-R-_Core-TM-_i9-12900K-with-glibc2.32
KiB Mem:    65638340 total,  57006128 free
KiB Swap:          0 total,         0 free
Head commit of repository gentoo: dc49ab61dfce7423b1cd908788a6630aa53b64e3

sh bash 5.1_p16
ld GNU ld (Gentoo 2.37_p1 p2) 2.37
ccache version 4.5.1 [disabled]
app-misc/pax-utils:        1.3.3::gentoo
app-shells/bash:           5.1_p16::gentoo
dev-java/java-config:      2.3.1::gentoo
dev-lang/perl:             5.34.1-r3::gentoo
dev-lang/python:           3.9.12::gentoo, 3.10.5::gentoo
dev-lang/rust-bin:         1.60.0::gentoo
dev-util/ccache:           4.5.1::gentoo
dev-util/cmake:            3.22.4::gentoo
dev-util/meson:            0.61.4-r2::gentoo
sys-apps/baselayout:       2.8::gentoo
sys-apps/sandbox:          2.29::gentoo
sys-apps/systemd:          250.6::gentoo
sys-devel/autoconf:        2.71-r1::gentoo
sys-devel/automake:        1.16.5::gentoo
sys-devel/binutils:        2.37_p1-r2::gentoo
sys-devel/binutils-config: 5.4.1::gentoo
sys-devel/clang:           12.0.1::gentoo
sys-devel/gcc:             9.3.0-r2::gentoo, 11.3.0::gentoo, 12.1.0::gentoo
sys-devel/gcc-config:      2.5-r1::gentoo
sys-devel/libtool:         2.4.6-r6::gentoo
sys-devel/llvm:            12.0.1::gentoo
sys-devel/make:            4.3::gentoo
sys-kernel/linux-headers:  5.15-r3::gentoo (virtual/os-headers)
sys-libs/glibc:            2.32-r8::gentoo
Repositories:

gentoo
    location: /var/db/repos/gentoo
    sync-type: git
    sync-uri: https://anongit.gentoo.org/git/repo/gentoo.git
    priority: -1000

local
    location: /var/db/repos/local
    masters: gentoo

ACCEPT_KEYWORDS="amd64"
ACCEPT_LICENSE="*"
CBUILD="x86_64-pc-linux-gnu"
CFLAGS="-O2 -pipe -march=native -mtune=native -fomit-frame-pointer"
CHOST="x86_64-pc-linux-gnu"
CONFIG_PROTECT="/etc /usr/lib64/libreoffice/program/sofficerc /usr/share/gnupg/qualified.txt"
CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/dconf /etc/env.d /etc/fonts/fonts.conf /etc/gconf /etc/gentoo-release /etc/revdep-rebuild /etc/sandbox.d /etc/terminfo /etc/texmf/language.dat.d /etc/texmf/language.def.d /etc/texmf/updmap.d /etc/texmf/web2c"
CXXFLAGS="-O2 -pipe -march=native -mtune=native -fomit-frame-pointer"
DISTDIR="/var/cache/distfiles"
ENV_UNSET="CARGO_HOME DBUS_SESSION_BUS_ADDRESS DISPLAY GOBIN GOPATH PERL5LIB PERL5OPT PERLPREFIX PERL_CORE PERL_MB_OPT PERL_MM_OPT XAUTHORITY XDG_CACHE_HOME XDG_CONFIG_HOME XDG_DATA_HOME XDG_RUNTIME_DIR"
FCFLAGS="-O2 -pipe -march=native -mtune=native -fomit-frame-pointer"
FEATURES="assume-digests binpkg-docompress binpkg-dostrip binpkg-logs buildpkg-live config-protect-if-modified distlocks ebuild-locks fixlafiles ipc-sandbox merge-sync multilib-strict network-sandbox news nodoc noman parallel-fetch pid-sandbox preserve-libs protect-owned qa-unresolved-soname-deps sandbox sfperms strict unknown-features-warn unmerge-logs unmerge-orphans userfetch userpriv usersandbox usersync xattr"
FFLAGS="-O2 -pipe -march=native -mtune=native -fomit-frame-pointer"
GENTOO_MIRRORS="http://distfiles.gentoo.org"
LANG="en_US.UTF-8"
LDFLAGS="-Wl,-O1 -Wl,--as-needed"
MAKEOPTS="-j25"
PKGDIR="/var/cache/binpkgs"
PORTAGE_CONFIGROOT="/"
PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --omit-dir-times --compress --force --whole-file --delete --stats --human-readable --timeout=180 --exclude=/distfiles --exclude=/local --exclude=/packages --exclude=/.git"
PORTAGE_TMPDIR="/var/tmp"
SHELL="/bin/zsh"
USE="acl amd64 bzip2 cli crypt dri fortran gdbm iconv ipv6 libglvnd libtirpc ncurses nls nptl openmp pam pcre readline seccomp split-usr ssl systemd udev unicode xattr zlib" ABI_X86="64" ADA_TARGET="gnat_2020" APACHE2_MODULES="authn_core authz_core socache_shmcb unixd actions alias auth_basic authn_alias authn_anon authn_dbm authn_default authn_file authz_dbm authz_default authz_groupfile authz_host authz_owner authz_user autoindex cache cgi cgid dav dav_fs dav_lock deflate dir disk_cache env expires ext_filter file_cache filter headers include info log_config logio mem_cache mime mime_magic negotiation rewrite setenvif speling status unique_id userdir usertrack vhost_alias" CALLIGRA_FEATURES="karbon sheets words" COLLECTD_PLUGINS="df interface irq load memory rrdtool swap syslog" CPU_FLAGS_X86="mmx mmxext sse sse2" ELIBC="glibc" GPSD_PROTOCOLS="ashtech aivdm earthmate evermore fv18 garmin garmintxt gpsclock greis isync itrax mtk3301 nmea ntrip navcom oceanserver oldstyle oncore rtcm104v2 rtcm104v3 sirf skytraq superstar2 timing tsip tripmate tnt ublox ubx" INPUT_DEVICES="libinput" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LIBREOFFICE_EXTENSIONS="presenter-console presenter-minimizer" LUA_SINGLE_TARGET="lua5-1" LUA_TARGETS="lua5-1" OFFICE_IMPLEMENTATION="libreoffice" PHP_TARGETS="php7-4 php8-0" POSTGRES_TARGETS="postgres12 postgres13" PYTHON_SINGLE_TARGET="python3_9" PYTHON_TARGETS="python3_9" RUBY_TARGETS="ruby27" USERLAND="GNU" VIDEO_CARDS="amdgpu fbdev intel nouveau radeon radeonsi vesa dummy v4l" XTABLES_ADDONS="quota2 psd pknock lscan length2 ipv4options ipset ipp2p iface geoip fuzzy condition tee tarpit sysrq proto steal rawnat logmark ipmark dhcpmac delude chaos account"
Unset:  ADDR2LINE, AR, ARFLAGS, AS, ASFLAGS, CC, CCLD, CONFIG_SHELL, CPP, CPPFLAGS, CTARGET, CXX, CXXFILT, ELFEDIT, EMERGE_DEFAULT_OPTS, EXTRA_ECONF, F77FLAGS, FC, GCOV, GPROF, INSTALL_MASK, LC_ALL, LD, LEX, LFLAGS, LIBTOOL, LINGUAS, MAKE, MAKEFLAGS, NM, OBJCOPY, OBJDUMP, PORTAGE_BINHOST, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS, RANLIB, READELF, RUSTFLAGS, SIZE, STRINGS, STRIP, YACC, YFLAGS
Comment 1 Stephan Hartmann (RETIRED) gentoo-dev 2022-06-13 20:31:50 UTC
sys-devel/gcc-9.5.0 looks similar
Comment 2 Stephan Hartmann (RETIRED) gentoo-dev 2022-06-14 10:42:04 UTC
sys-devel/gcc:9.5.0[lto] works with "-march=commetlake -mno-avx512f". Trying now remaining flags:
@@ -12 +12 @@
-  -mabm                                [disabled]
+  -mabm                                [enabled]
@@ -24 +24 @@
-  -march=                              cannonlake
+  -march=                              icelake-client
@@ -54 +54 @@
-  -mclwb                               [disabled]
+  -mclwb                               [enabled]
@@ -78 +78 @@
-  -mgfni                               [disabled]
+  -mgfni                               [enabled]
@@ -103,2 +103,2 @@
-  -mmovdir64b                          [disabled]
-  -mmovdiri                            [disabled]
+  -mmovdir64b                          [enabled]
+  -mmovdiri                            [enabled]
@@ -122 +122 @@
-  -mpconfig                            [disabled]
+  -mpconfig                            [enabled]
@@ -130 +130 @@
-  -mptwrite                            [disabled]
+  -mptwrite                            [enabled]
@@ -132 +132 @@
-  -mrdpid                              [disabled]
+  -mrdpid                              [enabled]
@@ -144 +144 @@
-  -msgx                                [enabled]
+  -msgx                                [disabled]
@@ -146 +146 @@
-  -mshstk                              [disabled]
+  -mshstk                              [enabled]
@@ -174 +174 @@
-  -mvaes                               [disabled]
+  -mvaes                               [enabled]
@@ -177 +177 @@
-  -mvpclmulqdq                         [disabled]
+  -mvpclmulqdq                         [enabled]
@@ -179 +179 @@
-  -mwaitpkg                            [disabled]
+  -mwaitpkg                            [enabled]
Comment 3 Stephan Hartmann (RETIRED) gentoo-dev 2022-06-14 18:06:15 UTC
With gcc-9 the situation is very weird. It succeeds with -march=native and -mtune=generic and fails with -march=native and -mtune=native. However, the target and parameter specific options are identical, because gcc-9 has no support for alderlake.
With gcc-11.3 it succeeds with -march=native (-march=alderlake) and -mtune=generic, but still succeeds if I add target and parameter specific options. It only fails if I flip -mtune=generic to -mtune=alderlake. Any hints how to debug this further?
Comment 4 Sam James archtester Gentoo Infrastructure gentoo-dev Security 2022-06-14 18:11:38 UTC
(In reply to Stephan Hartmann from comment #3)
> With gcc-9 the situation is very weird. It succeeds with -march=native and
> -mtune=generic and fails with -march=native and -mtune=native. However, the
> target and parameter specific options are identical, because gcc-9 has no
> support for alderlake.
> With gcc-11.3 it succeeds with -march=native (-march=alderlake) and
> -mtune=generic, but still succeeds if I add target and parameter specific
> options. It only fails if I flip -mtune=generic to -mtune=alderlake. Any
> hints how to debug this further?

I'd probably take this to gcc bugzilla at this point. Could ask in #gcc on OFTC for hints too.
Comment 5 Andreas K. Hüttel archtester gentoo-dev 2023-08-24 19:36:17 UTC
(In reply to Sam James from comment #4)
> (In reply to Stephan Hartmann from comment #3)
> > With gcc-9 the situation is very weird. It succeeds with -march=native and
> > -mtune=generic and fails with -march=native and -mtune=native. However, the
> > target and parameter specific options are identical, because gcc-9 has no
> > support for alderlake.
> > With gcc-11.3 it succeeds with -march=native (-march=alderlake) and
> > -mtune=generic, but still succeeds if I add target and parameter specific
> > options. It only fails if I flip -mtune=generic to -mtune=alderlake. Any
> > hints how to debug this further?
> 
> I'd probably take this to gcc bugzilla at this point. Could ask in #gcc on
> OFTC for hints too.