[LLVMdev] changing opcode

[Hal Finkel]

----- Original Message -----
> From: "reed kotler" <rkotler at mips.com>
> To: llvmdev at cs.uiuc.edu
> Sent: Wednesday, February 13, 2013 6:00:45 PM
> Subject: [LLVMdev] changing opcode
> 
> Is there a simple way to just change the opcode of a machine
> instruction.
> 
> I have a lot of long/short pairs where when I know the offset, i can
> replace the long version with the short version.

Are you looking for something like this:
MI.setDesc(TII.get(NewOpcode));

This is in PPCRegisterInfo::eliminateFrameIndex.

 -Hal

> 
> Tia.
> 
> REed
> 
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