[LLVMdev] NumDefs's MCInstrDesc and sub-operands

[Francois Pichet]

Hi,

I defined an instruction like this:

def LDM : OpusInstSTMLDM<0x27, 6, (outs REG_RANGE:$regRange),
                        (ins MEM_LDM:$addr),
                       "ldm $regRange, $addr", []>, Requires<[HasOpus3Enc]>;

REG_RANGE will be:

def REG_RANGE : Operand<i32> {
  let MIOperandInfo = (ops GR32, GR32);
  ...
}

Now I was expecting the NumDefs of LDM's MCInstrDesc to be 2. Yet it is 1.
This cause -verify-machineinstrs pass to fail.
Basically it seems like tablegen doesn't look take into account
sub-operands to calculate NumDefs's MCInstrDesc.

Is this a bug or by design?

Thanks.
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