[Bug bootstrap/94318] New: [10 Regression] endless loop building _sd_to_si.o on powerpc-linux-gnu

[doko at debian dot org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94318

            Bug ID: 94318
           Summary: [10 Regression] endless loop building _sd_to_si.o on
                    powerpc-linux-gnu
           Product: gcc
           Version: 10.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: bootstrap
          Assignee: unassigned at gcc dot gnu.org
          Reporter: doko at debian dot org
  Target Milestone: ---

seen with trunk 20200324, trying to build a cross compiler on x86_64-linux-gnu:

/packages/cross/10/u/gcc-10-cross-5ubuntu1/gcc/build/./gcc/xgcc
-B/packages/cross/10/u/gcc-10-cross-5ubuntu1/gcc/build/./gcc/
-B/usr/powerpc-linux-gnu/bin/ -B/usr/powerpc-linux-gnu/lib/ -isystem
/usr/powerpc-linux-gnu/include -isystem /usr/powerpc-linux-gnu/sys-include
-isystem /packages/cross/10/u/gcc-10-cross-5ubuntu1/gcc/build/sys-include    -g
-O2 -O2  -g -O2 -DIN_GCC  -DCROSS_DIRECTORY_STRUCTURE  -W -Wall -Wno-narrowing
-Wwrite-strings -Wcast-qual -Wno-error=format-diag -Wstrict-prototypes
-Wmissing-prototypes -Wno-error=format-diag -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../../../src/libgcc
-I../../../src/libgcc/. -I../../../src/libgcc/../gcc
-I../../../src/libgcc/../include -I../../../src/libgcc/../libdecnumber/dpd
-I../../../src/libgcc/../libdecnumber -DHAVE_CC_TLS  -o _sd_to_si.o -MT
_sd_to_si.o -MD -MP -MF _sd_to_si.dep -DFINE_GRAINED_LIBRARIES -DL_sd_to_si
-DWIDTH=32 -c ../../../src/libgcc/dfp-bit.c

$ find build/ -name _sd_to_si*
build/powerpc-linux-gnu/64/libgcc/_sd_to_si.dep
build/powerpc-linux-gnu/64/libgcc/_sd_to_si.o

looks like the 64bit multilib build is built correctly.

Program received signal SIGINT, Interrupt.
update_pseudo_point (regno=12183, point=24121, type=USE_POINT) at
../../src/gcc/lra-lives.c:245
245     update_pseudo_point (int regno, int point, enum point_type type)
(gdb) bt
#0  update_pseudo_point (regno=12183, point=24121, type=USE_POINT) at
../../src/gcc/lra-lives.c:245
#1  0x0000000000967380 in process_bb_lives (dead_insn_p=false,
curr_point=@0x7fffffffd1dc: 24121, bb=0x7ffff71b61a0)
    at ../../src/gcc/lra-lives.c:846
#2  lra_create_live_ranges_1 (all_p=<optimized out>, dead_insn_p=false) at
../../src/gcc/lra-lives.c:1388
#3  0x000000000094cc38 in lra (f=<optimized out>) at ../../src/gcc/lra.c:2476
#4  0x000000000090989a in do_reload () at ../../src/gcc/ira.c:5523
#5  (anonymous namespace)::pass_reload::execute (this=<optimized out>) at
../../src/gcc/ira.c:5709
#6  0x0000000000a092b8 in execute_one_pass (pass=0x1b20120) at
../../src/gcc/passes.c:2502
#7  0x0000000000a09bf0 in execute_pass_list_1 (pass=0x1b20120) at
../../src/gcc/passes.c:2590
#8  0x0000000000a09c02 in execute_pass_list_1 (pass=0x1b1ef20) at
../../src/gcc/passes.c:2591
#9  0x0000000000a09c2d in execute_pass_list (fn=0x7ffff7294630, pass=<optimized
out>) at ../../src/gcc/passes.c:2601
#10 0x00000000006f124e in cgraph_node::expand (this=0x7ffff718a9d8) at
../../src/gcc/context.h:48
#11 0x00000000006f22c0 in expand_all_functions () at
../../src/gcc/cgraphunit.c:2471
#12 symbol_table::compile (this=0x7ffff746f000) at
../../src/gcc/cgraphunit.c:2821
#13 0x00000000006f436d in symbol_table::compile (this=0x7ffff746f000) at
../../src/gcc/cgraphunit.c:3001
#14 symbol_table::finalize_compilation_unit (this=0x7ffff746f000) at
../../src/gcc/cgraphunit.c:3001
#15 0x0000000000acab3d in compile_file () at ../../src/gcc/toplev.c:483
#16 0x000000000059b0c6 in do_compile () at ../../src/gcc/toplev.c:2273
#17 toplev::main (this=this@entry=0x7fffffffd616, argc=<optimized out>,
argc@entry=35, argv=<optimized out>, argv@entry=0x7fffffffd728)
    at ../../src/gcc/toplev.c:2412
#18 0x000000000059d900 in main (argc=35, argv=0x7fffffffd728) at
../../src/gcc/main.c:39


Configured with: -v
         --enable-languages=c,c++,go,d,fortran,objc,obj-c++
         --prefix=/usr
         --with-gcc-major-version-only
         --program-suffix=-10
         --enable-shared
         --enable-linker-build-id
         --libexecdir=/usr/lib
         --without-included-gettext
         --enable-threads=posix
         --libdir=/usr/lib
         --enable-nls
         --with-sysroot=/
         --enable-clocale=gnu
         --enable-libstdcxx-debug
         --enable-libstdcxx-time=yes
         --with-default-libstdcxx-abi=new
         --enable-gnu-unique-object
         --disable-libitm
         --disable-libquadmath
         --disable-libquadmath-support
         --enable-plugin
         --with-system-zlib
         --disable-libphobos
         --enable-secureplt
         --disable-softfloat
         --with-cpu=default32
         --disable-softfloat
         --enable-targets=powerpc-linux,powerpc64-linux
         --enable-multiarch
         --disable-werror
         --with-long-double-128
         --enable-multilib
         --enable-checking=release
         --build=x86_64-linux-gnu
         --host=x86_64-linux-gnu
         --target=powerpc-linux-gnu
         --program-prefix=powerpc-linux-gnu-
         --includedir=/usr/powerpc-linux-gnu/include