[Bug target/50928] m32c ICE building RTEMS

["bernd.edlinger at hotmail dot de" <gcc-bugzilla@gcc.gnu.org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=50928

--- Comment #13 from Bernd Edlinger <bernd.edlinger at hotmail dot de> ---
ok, now I see.
the binutils-2.25.tar.gz works,
but if we build directly from the git it does not.
is this a new check that makes this problem?


regarding my patch on pr26255.c, this happens:

m32c-elf-gcc -O1 -mcpu=m32c pr26255.c
pr26255.c: In function 'foo':
pr26255.c:31:1: error: insn does not satisfy its constraints:
 }
 ^
(insn 62 61 63 2 (set (reg:PSI 4 a0)
        (plus:PSI (reg:PSI 4 a0)
            (reg/v/f:PSI 28 [ w ]))) pr26255.c:29 5 {addpsi3}
     (expr_list:REG_EQUIV (plus:PSI (reg/v/f:PSI 28 [ w ])
            (const_int 128 [0x80]))
        (nil)))
pr26255.c:31:1: internal compiler error: in extract_constrain_insn, at
recog.c:2246
0x9e9478 _fatal_insn(char const*, rtx_def const*, char const*, int, char
const*)
    ../../gcc-trunk/gcc/rtl-error.c:110
0x9e949f _fatal_insn_not_found(rtx_def const*, char const*, int, char const*)
    ../../gcc-trunk/gcc/rtl-error.c:121
0x9c0505 extract_constrain_insn(rtx_insn*)
    ../../gcc-trunk/gcc/recog.c:2246
0x9a1a5d reload_cse_simplify_operands
    ../../gcc-trunk/gcc/postreload.c:430
0x9a4485 reload_cse_simplify
    ../../gcc-trunk/gcc/postreload.c:207
0x9a4485 reload_cse_regs_1
    ../../gcc-trunk/gcc/postreload.c:246
0x9a459b reload_cse_regs
    ../../gcc-trunk/gcc/postreload.c:94
0x9a459b execute
    ../../gcc-trunk/gcc/postreload.c:2367


I had similar traps and could avoid them by adding an explicit
mode to some patterns.  But here I have no idea at the moment.

DJ do you see anything obvious in the addpsi3 pattern?