From: Richard Biener <richard.guenther@gmail.com>
To: Peter Bergner <bergner@linux.ibm.com>
Cc: Michael Meissner <meissner@linux.ibm.com>,
gcc-patches@gcc.gnu.org,
Segher Boessenkool <segher@kernel.crashing.org>,
"Kewen.Lin" <linkw@linux.ibm.com>,
David Edelsohn <dje.gcc@gmail.com>,
Will Schmidt <will_schmidt@vnet.ibm.com>,
Bill Seurer <seurer@linux.ibm.com>
Subject: Re: [PATCH 0/2] Repost of patches for solving the build on Fedora 36 problem
Date: Tue, 7 Feb 2023 15:22:41 +0100 [thread overview]
Message-ID: <CAFiYyc046bFWPP4XNqDzzC3A92t7F6XrKDKCivTafQPnwM=TQQ@mail.gmail.com> (raw)
In-Reply-To: <21a6708b-f226-6def-fe28-42d804fc4f5f@linux.ibm.com>
On Mon, Feb 6, 2023 at 7:28 PM Peter Bergner <bergner@linux.ibm.com> wrote:
>
> On 2/3/23 1:42 AM, Richard Biener wrote:
> > On Fri, Feb 3, 2023 at 6:44 AM Michael Meissner via Gcc-patches
> > <gcc-patches@gcc.gnu.org> wrote:
> >>
> >> I'm reposting these two patches that allow GCC to build on Fedora 36 just to be
> >> clear which patches I'm talking about. The issue is that if GCC is configured
> >> with long double using the IEEE 128-bit representation, it currently cannot
> >> build _mulkc3 and _divkc3 in libgcc.
> >
> > It's interesting that we do not see this with openSUSE where I configure with
> >
> > --with-cpu=power8 --with-tune=power9 --with-long-double-format=ieee
> > --with-long-double-128
> >
> > note this is ppc64le, we leave ppc64 and ppc with their default.
>
> That's strange, Bill just retested on our ppc64le openSUSE Tumbleweed system
> using basically the same configure options and sees the ICE:
>
> /home/seurer/gcc/git/gcc-trunk/libgcc/config/rs6000/_mulkc3.c: In function '__mulkc3_sw':
> /home/seurer/gcc/git/gcc-trunk/libgcc/config/rs6000/_mulkc3.c:97:1: internal compiler error: in fold_stmt, at gimple-range-fold.cc:522
>
> He did not specify --with=cpu= or --with-tune=, which means he got
> power8 defaults for both of those. It's hard for me to believe that
> --with-tune=power9 could hide the issue, but we'll try that configuration
> too. Do you have any other configure options that might affect things?
The full configure is
../configure --prefix=/usr --infodir=/usr/share/info
--mandir=/usr/share/man --libdir=/usr/lib64 --libexecdir=/usr/lib64
--enable-languages=c,c++,objc,fortran,obj-c++,ada,go,jit,m2
--enable-host-shared --enable-checking=release --disable-werror
--with-gxx-include-dir=/usr/include/c++/13
--with-libstdcxx-zoneinfo=/usr/share/zoneinfo --enable-ssp
--disable-libssp --disable-libvtv --enable-cet=auto --disable-libcc1
--enable-plugin --with-bugurl=https://bugs.opensuse.org/
'--with-pkgversion=SUSE Linux' --with-slibdir=/lib64
--with-system-zlib --enable-libstdcxx-allocator=new
--disable-libstdcxx-pch --enable-version-specific-runtime-libs
--with-gcc-major-version-only --enable-linker-build-id
--enable-linux-futex --enable-gnu-indirect-function
--program-suffix=-13 --without-system-libunwind --with-cpu=power8
--with-tune=power9 --with-long-double-format=ieee --enable-secureplt
--with-long-double-128 --enable-targets=powerpcle-linux
--disable-multilib --with-build-config=bootstrap-lto-lean
--enable-link-mutex --build=powerpc64le-suse-linux
--host=powerpc64le-suse-linux
and _mulkc3.c is built like
/home/abuild/rpmbuild/BUILD/gcc-13.0.1+git5679/obj-powerpc64le-suse-linux/./gcc/xgcc
-B/home/abuild/rpmbuild/BUILD/gcc-13.0.1+git5679/obj-powerpc64le-suse-linux/./gcc/
-B/usr/powerpc64le-suse-linux/bin/ -B/usr/powerpc64le-suse-linux/lib/
-isystem /usr/powerpc64le-suse-linux/include -isystem
/usr/powerpc64le-suse-linux/sys-include -fno-checking -O2
-U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=3 -funwind-tables
-fasynchronous-unwind-tables -fstack-clash-protection
-Werror=return-type -g -U_FORTIFY_SOURCE -O2 -O2 -U_FORTIFY_SOURCE
-D_FORTIFY_SOURCE=3 -funwind-tables -fasynchronous-unwind-tables
-fstack-clash-protection -Werror=return-type -g -U_FORTIFY_SOURCE
-DIN_GCC -fPIC -W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual
-Wno-format -Wstrict-prototypes -Wmissing-prototypes
-Wold-style-definition -isystem ./include -fPIC -mlong-double-128
-mno-minimal-toc -g -DIN_LIBGCC2 -fbuilding-libgcc
-fno-stack-protector -fPIC -mlong-double-128 -mno-minimal-toc -I. -I.
-I../.././gcc -I../../../libgcc -I../../../libgcc/.
-I../../../libgcc/../gcc -I../../../libgcc/../include
-I../../../libgcc/../libdecnumber/dpd
-I../../../libgcc/../libdecnumber -DHAVE_CC_TLS -Wno-type-limits
-mvsx -mfloat128 -mno-float128-hardware -mno-gnu-attribute
-I../../../libgcc/soft-fp -I../../../libgcc/config/rs6000
-DFLOAT128_HW_INSNS -DFLOAT128_HW_INSNS_ISA3_1 -o _mulkc3.o -MT
_mulkc3.o -MD -MP -MF _mulkc3.dep -c
../../../libgcc/config/rs6000/_mulkc3.c -fvisibility=hidden
-DHIDE_EXPORTS
>
> Peter
>
>
next prev parent reply other threads:[~2023-02-07 14:22 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-02-03 5:43 Michael Meissner
2023-02-03 5:49 ` [PATCH 1/2] PR target/107299: Fix build issue when long double is IEEE 128-bit Michael Meissner
2023-02-22 10:37 ` Kewen.Lin
2023-02-22 18:11 ` Michael Meissner
2023-03-02 22:45 ` Ping: " Michael Meissner
2023-03-03 20:56 ` Segher Boessenkool
2023-02-03 5:53 ` [PATCH 2/2] Rework 128-bit complex multiply and divide Michael Meissner
2023-02-22 10:13 ` Kewen.Lin
2023-02-22 18:01 ` Michael Meissner
2023-03-02 22:46 ` Ping: " Michael Meissner
2023-03-03 21:35 ` Segher Boessenkool
2023-03-09 16:11 ` Michael Meissner
2023-03-09 22:16 ` Segher Boessenkool
2023-03-09 23:23 ` Michael Meissner
2023-03-09 16:42 ` Michael Meissner
2023-02-03 7:42 ` [PATCH 0/2] Repost of patches for solving the build on Fedora 36 problem Richard Biener
2023-02-06 18:28 ` Peter Bergner
2023-02-07 14:22 ` Richard Biener [this message]
2023-02-07 14:31 ` Jakub Jelinek
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