[LLVMdev] Determining the register type of a MachineOperand

[Villmow, Micah]

This only has the register class information, not the register type
information.

 

My register class has multiple register types and I need to know how to
differentiate which register type of my register class of the current
register.

The information in the MVT data type is what I need, i.e. the position
in the GPRVT array of each register.

 

Something equivalent to MVT getValueType() but for registers.

 

Thanks,

 

________________________________

From: llvmdev-bounces at cs.uiuc.edu [mailto:llvmdev-bounces at cs.uiuc.edu]
On Behalf Of Evan Cheng
Sent: Wednesday, September 24, 2008 10:22 AM
To: LLVM Developers Mailing List
Subject: Re: [LLVMdev] Determining the register type of a MachineOperand

 

You can get to the MachineInstr from a MachineOperand. Then get to its
TargetInstrDesc and TargetOperandInfo which has register class
information.

 

Evan

 

On Sep 23, 2008, at 12:44 PM, Villmow, Micah wrote:





How do I determine what type of register(i.e. i32, f32, etc..) I am
accessing from a MachineOperand? I.e. how do I get to the MVT struct, or
equivalent information, from a MachineOperand object?

 

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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