[llvm-dev] Tablegen definition question

[Sky Flyer via llvm-dev]

Hello James,

that was also what I've planned to do but just wasn't sure. Thanks for
that.


On Mon, Dec 14, 2015 at 11:52 AM, James Molloy <james at jamesmolloy.co.uk>
wrote:

> Hi,
>
> You can't nest operands like that - it must be a flattened list. So:
>
> def *Xpred* : PredicateOperand<OtherVT, (ops *i32imm, i32imm*, i32imm),
> (ops (i32 14), (i32 zero_reg))> {...}
>
> On Mon, 14 Dec 2015 at 10:21 Sky Flyer via llvm-dev <
> llvm-dev at lists.llvm.org> wrote:
>
>> Hi All,
>>
>> In ARMInstFormats.td predicate is defined this way:
>>
>>
>>
>> *def pred : PredicateOperand<OtherVT, (ops i32imm, i32imm),*
>> *(ops (i32 14), (i32 zero_reg))> {...}*
>>
>>
>> I use the same definition in my code. But I have another version of
>> predicate which is exactly the same but it is a condition code plus a
>> quantifier! (e.g. Xpred = (pred + i32imm)).
>>
>> I was wondering how we can define a sub sub operand, something like this:
>>
>> def *Xpred* : PredicateOperand<OtherVT, (ops *pred*, i32imm),
>> (ops (i32 14), (i32 zero_reg))> {...}
>>
>> I don't know how clear I explained, but can someone recommend a solution?
>>
>> Cheers,
>> ES
>>
>>
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>> llvm-dev at lists.llvm.org
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>>
>
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