Bug#708961: gcc-snapshot: unrecognizable insn in decLibrary.c, ICE in extract_insn

[Matthias Klose <doko@debian.org>]

Control: tags -1 + moreinfo

please recheck. upstream can't reproduce this.

On 05/19/2013 09:02 PM, Roland Stigge wrote:
> when building the latest gcc-snapshot on powerpcspe (i.e., gnuspe / e500v2),
> this results in:
> 
> ...
> /home/ernie/gcc-snapshot-20130509/build/./gcc/xgcc -B/home/ernie/gcc-snapshot-20130509/build/./gcc/ -B/usr/lib/gcc-snapshot/powerpc-linux-gnuspe/bin/ -B/usr/lib/gcc-snapshot/powerpc-linux-gnuspe/lib/ -isystem /usr/lib/gcc-snapshot/powerpc-linux-gnuspe/include -isystem /usr/lib/gcc-snapshot/powerpc-linux-gnuspe/sys-include    -g -O2 -O2  -g -O2 -DIN_GCC   -W -Wall -Wwrite-strings -Wcast-qual -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../../../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 decDouble.o -MT decDouble.o -MD -MP -MF decDouble.dep -c ../../../src/libgcc/../libdecnumber/decDouble.c
> ../../../src/libgcc/../libdecnumber/decLibrary.c: In function 'isinfd64':
> ../../../src/libgcc/../libdecnumber/decLibrary.c:60:1: error: unrecognizable insn:
>  }
>  ^
> (insn 2 4 3 2 (set (reg/v:DD 125 [ arg ])
>         (reg:DD 3 3 [ arg ])) ../../../src/libgcc/../libdecnumber/decLibrary.c:53 -1
>      (nil))
> ../../../src/libgcc/../libdecnumber/decLibrary.c:60:1: internal compiler error: in extract_insn, at recog.c:2154
> 0x1086917f _fatal_insn(char const*, rtx_def const*, char const*, int, char const*)
>         ../../src/gcc/rtl-error.c:109
> 0x108691d3 _fatal_insn_not_found(rtx_def const*, char const*, int, char const*)
>         ../../src/gcc/rtl-error.c:117
> 0x10801bd7 extract_insn(rtx_def*)
>         ../../src/gcc/recog.c:2154
> 0x10573667 instantiate_virtual_regs_in_insn
>         ../../src/gcc/function.c:1561
> 0x105752c3 instantiate_virtual_regs
>         ../../src/gcc/function.c:1926
> 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-snapshot/README.Bugs> for instructions.
> Preprocessed source stored into /tmp/ccLwS90V.out file, please attach this to your bugreport.