[LLVMdev] Accessing InstrFormat.td fields

[Evan Cheng]

X86 instruction formats have extra bits as well. See  
X86InstrFormats.td, X86InstrInfo.h, and X86CodeEmitter.cpp to see how  
they are accessed. However, these are static data so I don't think you  
can modify them.

Evan

On Oct 28, 2008, at 9:18 AM, Villmow, Micah wrote:

> When I setup my InstrFormat fields, I added some custom fields  
> specific for my backend. How do I access these from inside LLVM?
>
> For example:
> class InstrFormat<dag outs, dag ins, string asmstr, list<dag> pattern>
>         : Instruction {
>     let Namespace = "AMD";
>     dag OutOperandList = outs;
>     dag InOperandList = ins;
>     let Pattern = pattern;
>     let AsmString = asmstr;
>     OpCodeModifier ocmod;
> }
>
> How do I set/read the ocmod struct from either SelectCode or a  
> separate phase? Is there an example of this?
>
> Micah Villmow
> Systems Engineer
> Advanced Technology & Performance
> Advanced Micro Devices Inc.
> 4555 Great America Pkwy,
> Santa Clara, CA. 95054
> P: 408-572-6219
> F: 408-572-6596
>
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