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Subject: [Bug rtl-optimization/32776]  New: ICE RTL check: expected code 'reg', have 'concatn' in rhs_regno, at rtl.h:972
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From: "rask at sygehus dot dk" <gcc-bugzilla@gcc.gnu.org>
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The attached (slightly reduced) test case causes an ICE:
$ ./xgcc -B./ -S -o /dev/null -O2 /tmp/delta/dtoa-00-o.c.
[several warnings]
/tmp/delta/dtoa-00-o.c:23: internal compiler error: RTL check: expected code
'reg', have 'concatn' in rhs_regno, at rtl.h:972

I'm using revision 126676. These are my configure flags:
--target m32c-unknown-elf --with-newlib --enable-sim --disable-gdb
--disable-nls --disable-multilib --enable-languages=c,c++
--enable-cxx-flags=-O2 --enable-checking=yes,rtl


-- 
           Summary: ICE RTL check: expected code 'reg', have 'concatn' in
                    rhs_regno, at rtl.h:972
           Product: gcc
           Version: 4.3.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: rtl-optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: rask at sygehus dot dk
GCC target triplet: m32c-unknown-elf


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32776