[LLVMdev] Syntax help about TableGen

[Ke Bai]

Hi all,

I am trying to replace *selectcc* with our own IL like *cmp_eq_cmpval*. The
formats for cmp_eq_cmpval and select_cc are described in the comments. The
following is my code.
However, the 1st operand (highlighted with bold red color, i.e.,
(type:$src1)) is illegal, and its error is "error:Illegal operand for the
'ZERO_EQrirr' instruction!" Could anybody here point me out
what kind of solution can be? Thanks!

//-------------------------------------------------------------------//
// Multiclasses that deal with the cmp instruction.
// *cmp_eq_cmpval(cmpval) dst, src0, src1, src2*
// *select_cc lhs, rhs, true, false, cond*
//-------------------------------------------------------------------//

def cond_seteq_setoeq : PatLeaf <(cond), [{
  return N->get() == ISD::SETEQ || N->get() == ISD::SETOEQ;
}]>;

multiclass CmpRelop<RegisterClass reg, ValueType type,
                   string conststr, PatLeaf cc, string ccstr> {
  def rirr : ILFormat<IL_OP_CMP,
        (outs GPR_32:$dst),
        (ins (reg:$src0), (type:$src1), (reg:$src2), (reg:$src3)),
        !strconcat(IL_OP_CMP.Text, "_($ccstr)_cmpval($conststr) $dst,
$src0, $src2, $src3"),
        [(set GPR_32:$dst,
                (selectcc (type reg:$src0), *(type:$src1),* (type
reg:$src2), (type reg:$src3), cc))]>;
}

multiclass CmpRelopExpand<string conststr> {
   defm EQ : CmpRelop<GPR_32, f32, conststr, cond_seteq_setoeq, "eq">;
}

defm ZERO_             : CmpRelopExpand<"0.0">;

___
Regards,
Ke
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