llvm dev - Dec 2015 - Cloning a MachineInstr

I'm trying to clone a MachineInstr in the AsmPrinter::EmitInstruction, Here
is the code:

void EsenciaAsmPrinter::EmitInstruction(const MachineInstr *MI) {
  const MachineFunction *MF = MI->getParent()->getParent();
  MachineInstr *CloneMI = MF->CloneMachineInstr(MI);
...
...
}

The problem is that MF is a const and CloneMachineInstr expects a
non-const. Does anybody know if there is a way to create a copy of a given
MachineInstr?

Any help is appreciated.

-- 
Rail Shafigulin
Software Engineer
Esencia Technologies
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There is a getParent() function in MachineBasicBlock that returns non-const
MachineFunction.

Patrick

2015-12-02 18:12 GMT-05:00 Rail Shafigulin via llvm-dev <
llvm-dev at lists.llvm.org>:
> I'm trying to clone a MachineInstr in the AsmPrinter::EmitInstruction,
> Here is the code:
>
> void EsenciaAsmPrinter::EmitInstruction(const MachineInstr *MI) {
>   const MachineFunction *MF = MI->getParent()->getParent();
>   MachineInstr *CloneMI = MF->CloneMachineInstr(MI);
> ...
> ...
> }
>
> The problem is that MF is a const and CloneMachineInstr expects a
> non-const. Does anybody know if there is a way to create a copy of a given
> MachineInstr?
>
> Any help is appreciated.
>
> --
> Rail Shafigulin
> Software Engineer
> Esencia Technologies
>
> _______________________________________________
> LLVM Developers mailing list
> llvm-dev at lists.llvm.org
> http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev
>
>
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On Wed, Dec 2, 2015 at 3:21 PM, Ziqiang Patrick Huang <
ziqiang.huang at duke.edu> wrote:
> There is a getParent() function in MachineBasicBlock that returns
> non-const MachineFunction.
>
> Patrick
>
The problem is that in
void EscalaAsmPrinter::EmitInstruction(const MachineInstr *MI), MI is a
const. So whenever I call MI->getParent()->getParent() I get a const
method. Is there a different way to clone a MachineInstr?


-- 
Rail Shafigulin
Software Engineer
Esencia Technologies
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> On Dec 2, 2015, at 3:12 PM, Rail Shafigulin via llvm-dev <llvm-dev at
lists.llvm.org> wrote:
> 
> I'm trying to clone a MachineInstr in the AsmPrinter::EmitInstruction,
Here is the code:
> 
> void EsenciaAsmPrinter::EmitInstruction(const MachineInstr *MI) {
>   const MachineFunction *MF = MI->getParent()->getParent();
>   MachineInstr *CloneMI = MF->CloneMachineInstr(MI);
> ...
> ...
> }
> 
> The problem is that MF is a const and CloneMachineInstr expects a
non-const. Does anybody know if there is a way to create a copy of a given
MachineInstr?
What are you trying to achieve in the end? 

— 
Mehdi

> What are you trying to achieve in the end?
>
> —
> Mehdi
>
>
I need to insert extra NOP instructions into the bundle or at least
generate a few extra ones during the assembly generation.

-- 
Rail Shafigulin
Software Engineer
Esencia Technologies
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