[Bug target/56121] New: [SH] ICE in libgcc/unwind-dw2.c

[olegendo at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56121

             Bug #: 56121
           Summary: [SH] ICE in libgcc/unwind-dw2.c
    Classification: Unclassified
           Product: gcc
           Version: 4.8.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: olegendo@gcc.gnu.org
            Target: sh*-*-*


When building an SH cross compiler the following error occurs:

../../../../gcc-trunk2/libgcc/unwind-dw2.c: In function 'execute_stack_op':
../../../../gcc-trunk2/libgcc/unwind-dw2.c:902:1: error: unable to generate
reloads for:
 }
 ^
(insn 747 746 748 61 (set (reg:SI 147 t)
        (zero_extract:SI (reg:SI 621 [ MEM[(struct _Unwind_Context
*)context_25(D) + 640B] ])
            (const_int 1 [0x1])
            (const_int 30 [0x1e])))
../../../../gcc-trunk2/libgcc/unwind-dw2.c:211 496 {bld_reg}
     (expr_list:REG_DEAD (reg:SI 621 [ MEM[(struct _Unwind_Context
*)context_25(D) + 640B] ])
        (nil)))
../../../../gcc-trunk2/libgcc/unwind-dw2.c:902:1: internal compiler error: in
find_reloads, at reload.c:3877
0x85338c7 _fatal_insn(char const*, rtx_def const*, char const*, int, char
const*)
    ../../gcc-trunk2/gcc/rtl-error.c:109
0x851b374 find_reloads(rtx_def*, int, int, int, short*)
    ../../gcc-trunk2/gcc/reload.c:3877
0x8524668 calculate_needs_all_insns
    ../../gcc-trunk2/gcc/reload1.c:1520
0x8529038 reload(rtx_def*, int)
    ../../gcc-trunk2/gcc/reload1.c:941
0x8444925 do_reload
    ../../gcc-trunk2/gcc/ira.c:4635
0x8444925 rest_of_handle_reload
    ../../gcc-trunk2/gcc/ira.c:4736
Please submit a full bug report,

It seems this happens when compiling libgcc for SH2A.