[Bug target/55718] [4.8 Regression] ICE in gen_reg_rtx, at emit-rtl.c:866

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55718



--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> 2012-12-17 
10:40:30 UTC ---

Reduced testcase:



extern char temp[];

short ansi_value[256];

void terminal_state(void)

{

  static const char *puc[] = { "", "<", "=", ">", "?", 0};

  int i, j, k, l, modes_found;

  char buf[256];

  k = (int) __builtin_strlen(temp);

  for (j = l = 0; j < 255 && j - l < 50; j++)

    {

      __builtin_sprintf(temp, "\033[%s%d$p", puc[i], j);

      if (ansi_value[1])

        {

          l = j;

          buf[k] = '\0';

          put_crlf();

          ptextln(buf);

          buf[k++] = ' ';

          k = (int) __builtin_strlen(temp);

        }

    }

  for (i = j = 0; j < modes_found; j = ++i >> 1)

    ;

}



(gdb) bt

#0  fancy_abort (

    file=0x1170a20 "/space/rguenther/src/svn/trunk/gcc/emit-rtl.c", line=866, 

    function=0x1171ab9 <gen_reg_rtx(machine_mode)::__FUNCTION__> "gen_reg_rtx")

    at /space/rguenther/src/svn/trunk/gcc/diagnostic.c:1146

#1  0x000000000077a669 in gen_reg_rtx (mode=DImode)

    at /space/rguenther/src/svn/trunk/gcc/emit-rtl.c:866

#2  0x00000000009aaa64 in maybe_legitimize_operand (icode=CODE_FOR_adddi3, 

    opno=0, op=0x7fffffffd040)

    at /space/rguenther/src/svn/trunk/gcc/optabs.c:8057

#3  0x00000000009aadca in maybe_legitimize_operands (icode=CODE_FOR_adddi3, 

    opno=0, nops=3, ops=0x7fffffffd040)

    at /space/rguenther/src/svn/trunk/gcc/optabs.c:8130

#4  0x00000000009aae5e in maybe_gen_insn (icode=CODE_FOR_adddi3, nops=3, 

    ops=0x7fffffffd040) at /space/rguenther/src/svn/trunk/gcc/optabs.c:8148

#5  0x000000000099a590 in expand_binop_directly (mode=DImode, 

    binoptab=add_optab, op0=0x7ffff6e1f5a0, op1=0x7ffff6d074b0, target=0x0, 

    unsignedp=1, methods=OPTAB_LIB_WIDEN, last=0x0)

    at /space/rguenther/src/svn/trunk/gcc/optabs.c:1452

#6  0x000000000099a7f7 in expand_binop (mode=DImode, binoptab=add_optab, 

    op0=0x7ffff6e1f5a0, op1=0x7ffff6d074b0, target=0x0, unsignedp=1, 

    methods=OPTAB_LIB_WIDEN)

    at /space/rguenther/src/svn/trunk/gcc/optabs.c:1521

#7  0x0000000000999f66 in expand_simple_binop (mode=DImode, code=PLUS, 

    op0=0x7ffff6e1f5a0, op1=0x7ffff6d074b0, target=0x0, unsignedp=1, 

    methods=OPTAB_LIB_WIDEN)

    at /space/rguenther/src/svn/trunk/gcc/optabs.c:1269

#8  0x00000000007b8479 in force_operand (value=0x7ffff6e1f600, target=0x0)

    at /space/rguenther/src/svn/trunk/gcc/expr.c:7042

#9  0x0000000000d44720 in legitimize_pic_address (orig=0x7ffff6e19a70, 

    reg=0x7ffff6e20220)

    at /space/rguenther/src/svn/trunk/gcc/config/s390/s390.c:3669

#10 0x0000000000d458f9 in emit_symbolic_move (operands=0x7fffffffd4f0)

    at /space/rguenther/src/svn/trunk/gcc/config/s390/s390.c:3925

#11 0x0000000000d855cf in gen_movdi (operand0=0x7ffff6e20220, 

    operand1=0x7ffff6e19a70)

    at /space/rguenther/src/svn/trunk/gcc/config/s390/s390.md:1339

#12 0x00000000007abfb0 in emit_move_insn_1 (x=0x7ffff6e20220, y=0x7ffff6e19a70)

    at /space/rguenther/src/svn/trunk/gcc/expr.c:3417

#13 0x00000000009a2e07 in gen_move_insn (x=0x7ffff6e20220, y=0x7ffff6e19a70)

    at /space/rguenther/src/svn/trunk/gcc/optabs.c:4785

#14 0x0000000000a28c8b in gen_reload (out=0x7ffff6e20220, in=0x7ffff6e19a70, 

    opnum=2, type=RELOAD_FOR_OPERAND_ADDRESS)

    at /space/rguenther/src/svn/trunk/gcc/reload1.c:8707