[Bug bootstrap/47230] New: gcc fails to bootstrap on alpha in stage2 with "relocation truncated to fit: GPREL16 against ..."

["ubizjak at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47230

           Summary: gcc fails to bootstrap on alpha in stage2 with
                    "relocation truncated to fit: GPREL16 against ..."
           Product: gcc
           Version: 4.6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: bootstrap
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: ubizjak@gmail.com


GCC fails to bootstrap on alphaev68-unknown-linux-gnu in stage2 with:

/home/uros/gcc-build/./prev-gcc/xgcc -B/home/uros/gcc-build/./prev-gcc/
-B/usr/local/alphaev68-unknown-linux-gnu/bin/
-B/usr/local/alphaev68-unknown-linux-gnu/bin/
-B/usr/local/alphaev68-unknown-linux-gnu/lib/ -isystem
/usr/local/alphaev68-unknown-linux-gnu/include -isystem
/usr/local/alphaev68-unknown-linux-gnu/sys-include      -g -O2 -gtoggle
-DIN_GCC   -W -Wall -Wwrite-strings -Wcast-qual -Wstrict-prototypes
-Wmissing-prototypes -Wmissing-format-attribute -pedantic -Wno-long-long
-Wno-variadic-macros -Wno-overlength-strings -Werror -Wold-style-definition
-Wc++-compat -fno-common  -DHAVE_CONFIG_H -static-libstdc++ -static-libgcc  -o
lto1 \
    lto/lto-lang.o lto/lto.o lto/lto-object.o attribs.o main.o tree-browser.o
libbackend.a ../libcpp/libcpp.a ../libdecnumber/libdecnumber.a -lcloog -lppl_c
-lppl -lgmpxx -lmpc -lmpfr -lgmp -rdynamic -ldl  -L../zlib -lz
../libcpp/libcpp.a   ../libiberty/libiberty.a ../libdecnumber/libdecnumber.a 
libbackend.a(cfgbuild.o): In function `find_many_sub_basic_blocks':
(.text+0x450): relocation truncated to fit: GPREL16 against symbol
`default_target_rtl' defined in .bss section in libbackend.a(emit-rtl.o)
libbackend.a(cfgbuild.o): In function `find_many_sub_basic_blocks':
(.text+0xdc4): relocation truncated to fit: GPREL16 against symbol
`default_target_rtl' defined in .bss section in libbackend.a(emit-rtl.o)
libbackend.a(cfgcleanup.o): In function `mark_effect':
(.text+0x3e4): relocation truncated to fit: GPREL16 against symbol
`default_target_rtl' defined in .bss section in libbackend.a(emit-rtl.o)
libbackend.a(cfgcleanup.o): In function `try_crossjump_to_edge.isra.24':
(.text+0x1f98): relocation truncated to fit: GPREL16 against symbol
`default_target_rtl' defined in .bss section in libbackend.a(emit-rtl.o)
libbackend.a(cfgcleanup.o): In function `cleanup_cfg':
(.text+0x4870): relocation truncated to fit: GPREL16 against symbol
`default_target_rtl' defined in .bss section in libbackend.a(emit-rtl.o)
libbackend.a(cfgcleanup.o): In function `cleanup_cfg':
(.text+0x4f94): relocation truncated to fit: GPREL16 against symbol
`default_target_rtl' defined in .bss section in libbackend.a(emit-rtl.o)
libbackend.a(combine.o): In function `can_combine_p.isra.17':
(.text+0xae28): relocation truncated to fit: GPREL16 against symbol
`default_target_rtl' defined in .bss section in libbackend.a(emit-rtl.o)
libbackend.a(combine.o): In function `combine_simplify_rtx':
(.text+0x10204): relocation truncated to fit: GPREL16 against symbol
`default_target_rtl' defined in .bss section in libbackend.a(emit-rtl.o)
libbackend.a(combine.o): In function `combine_simplify_rtx':
(.text+0x12640): relocation truncated to fit: GPREL16 against symbol
`default_target_rtl' defined in .bss section in libbackend.a(emit-rtl.o)
libbackend.a(combine.o): In function `simplify_if_then_else':
(.text+0x138f8): relocation truncated to fit: GPREL16 against symbol
`default_target_rtl' defined in .bss section in libbackend.a(emit-rtl.o)
libbackend.a(combine.o): In function `simplify_if_then_else':
(.text+0x13d08): additional relocation overflows omitted from the output
collect2: ld returned 1 exit status
gmake[3]: *** [lto1] Error 1
gmake[3]: Leaving directory `/space/uros/gcc-build/gcc'
gmake[2]: *** [all-stage2-gcc] Error 2
gmake[2]: Leaving directory `/space/uros/gcc-build'
gmake[1]: *** [stage2-bubble] Error 2
gmake[1]: Leaving directory `/space/uros/gcc-build'
gmake: *** [all] Error 2

It looks that "default_target_rtl" symbol can not be reached with GP relative
relocation anymore.