emit_move_insn

[Hendrik Greving <hendrik.greving.intel@xxxxxxxxx>]

In my backend (GCC 4.8.1), the compiler calls emit_move_insn from
expand_value_return. The C-code is

static char
cnv(const char *str) {
 int i = strtol(str, ((void *)0), 10);
 if (i == -1)
  i = 127;
 return (char)i;
}

x is SImode and y is QImode (makes sense from looking at the C-code).
Apparently the compiler doesn't call any sign or zero extend before
that. I am running into the assertion in emit_move_insn

gcc_assert (mode != BLKmode
     && (GET_MODE (y) == mode || GET_MODE (y) == VOIDmode));

because mode(x) != mode(y).

Any idea what could causing this?

Regards,
Thanks,
Hendrik Greving