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issue building qemu latest on debian ppc

Hi Adrian,
i'm try to build last qemu on Debian PPC64 on my G5 Quad but im facing strange hard build errors.
I m in contact with the qemu ppc ML and there Balaton Zoltan make me know this kind of issues are not because bad code in qemu.
Zoltan write to me this kind of issues can come in two cases:
a)Hardware failure b) a GCC Bug.
I check my machine and look like there are not evident hardware issue, machine is stable like in past, all is up and working on Linux and MacOS leopard too.

this is the qemu pull that im try to build https://gitlab.com/dgibson/qemu.git tags/ppc-for-6.1-20210713

if some one in ML can try to buid on BE hardware is welcome.

this is the issue that i face during build.

gigi@debian:~/src/tags/ppc-for-6.1-20210713/build$ ninja
> [3864/9215] Compiling C object libqemu-mipsel-softmmu.fa.p/target_mips_tcg_msa_helper.c.o
> FAILED: libqemu-mipsel-softmmu.fa.p/target_mips_tcg_msa_helper.c.o
> cc -Ilibqemu-mipsel-softmmu.fa.p -I. -I.. -Itarget/mips -I../target/mips -I../capstone/include/capstone -Iqapi -Itrace -Iui -Iui/shader -I/usr/include/pixman-1 -I/usr/include/glib-2.0 -I/usr/lib/powerpc64-linux-gnu/glib-2.0/include -fdiagnostics-color=auto -pipe -Wall -Winvalid-pch -Werror -std=gnu11 -O2 -g -isystem /home/gigi/src/tags/ppc-for-6.1-20210713/linux-headers -isystem linux-headers -iquote . -iquote /home/gigi/src/tags/ppc-for-6.1-20210713 -iquote /home/gigi/src/tags/ppc-for-6.1-20210713/include -iquote /home/gigi/src/tags/ppc-for-6.1-20210713/disas/libvixl -iquote /home/gigi/src/tags/ppc-for-6.1-20210713/tcg/ppc -pthread -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -m64 -D_GNU_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -Wstrict-prototypes -Wredundant-decls -Wundef -Wwrite-strings -Wmissing-prototypes -fno-strict-aliasing -fno-common -fwrapv -Wold-style-declaration -Wold-style-definition -Wtype-limits -Wformat-security -Wformat-y2k -Winit-self -Wignored-qualifiers -Wempt
 y-body -Wnested-externs -Wendif-labels -Wexpansion-to-defined -Wimplicit-fallthrough=2 -Wno-missing-include-dirs -Wno-shift-negative-value -Wno-psabi -fstack-protector-strong -fPIE -isystem../linux-headers -isystemlinux-headers -DNEED_CPU_H '-DCONFIG_TARGET="mipsel-softmmu-config-target.h"' '-DCONFIG_DEVICES="mipsel-softmmu-config-devices.h"' -MD -MQ libqemu-mipsel-softmmu.fa.p/target_mips_tcg_msa_helper.c.o -MF libqemu-mipsel-softmmu.fa.p/target_mips_tcg_msa_helper.c.o.d -o libqemu-mipsel-softmmu.fa.p/target_mips_tcg_msa_helper.c.o -c ../target/mips/tcg/msa_helper.c
> during RTL pass: sched1
> ../target/mips/tcg/msa_helper.c: In function ‘helper_msa_fmin_df’:
> ../target/mips/tcg/msa_helper.c:7536:1: internal compiler error: Errore di segmentazione
> 7536 | }
>      | ^
> 0x3fffa7b8e1c3 generic_start_main
> ../csu/libc-start.c:308
> 0x3fffa7b8e3d3 __libc_start_main
> ../sysdeps/unix/sysv/linux/powerpc/libc-start.c:98
> Please submit a full bug report,
> with preprocessed source if appropriate.
> Please include the complete backtrace with any bug report.
> See <file:///usr/share/doc/gcc-10/README.Bugs> for instructions.
> [3869/9215] Compiling C object libqemu-mipsel-softmmu.fa.p/target_mips_tcg_translate.c.o
> ninja: build stopped: subcommand failed.

Thank you

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