Instruction Conversion

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#1

Hi,

Let say i am writing a code inside basic block pass and iterating all the instructions inside,
and i encountered in this instruction :

%3 = add i32 %1, 2

I want to convert this instruction to something like this:

add R1, 2, R3

I know the opocode, but i what i need is, the operands %1 and 2 (in this example).

I will be grateful if some one will tell me how to do so .

#2

Rotem Varon wrote:

Hi,

Let say i am writing a code inside basic block pass and iterating all the instructions inside,
and i encountered in this instruction :

If you're asking how to get the operands of an Instruction, use the getOperand() method:

Value * Operand1 = I->getOperand(0);
Value * Operand2 = I->getOperand(1);

The LLVM doxygen documentation (http://llvm.org/doxygen/) is an invaluable resource. You may also want to read the Programmer's Guide (http://llvm.org/docs/ProgrammersManual.html).

Does this answer your question?

-- John T.

#3

yes, thank you for your quick reply.