On Mon, Feb 6, 2023 at 7:28 PM Peter Bergner <berg...@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 > >
