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Re: [PATCH, rtl-optimization]: Fix PR rtl-optimization/33846, ICE in trunc_int_for_mode, at explow.c:55

On 10/22/07, Paolo Bonzini <bonzini@gnu.org> wrote:
> Eric Botcazou wrote:
> >> The combiner creates:
> >>
> >> (set (reg:V4SI 106)
> >>     (ashiftrt:V4SI (xor:V4SI (reg:V4SI 102)
> >>             (const_int -1 [0xffffffff]))
> >>         (const_int 31 [0x1f])))
> >
> > (xor:V4SI (reg:V4SI 102)
> >   (const_int -1 [0xffffffff]))
> >
> > doesn't make much sense, we should have a CONST_VECTOR instead.
>
> Yes, where is that bogus XOR created instead?

A couple of lines above (line 9345 in combine.c), where we have:

	case NOT:
	  /* Make this fit the case below.  */
	  varop = gen_rtx_XOR (mode, XEXP (varop, 0),
			       GEN_INT (GET_MODE_MASK (mode)));

Uros.
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