[LLVMdev] How to fix the operand references of cloned instruction

[Abhinash Jain]

I have cloned an instruction from one basic block to another newly created
block in newly created function.

And since am cloning an instruction the operands of that instruction still
points to the instructions of old block. Due to which am getting an error as
"Instruction does not dominate all uses!".

example:-

original function and block:-
		  %a = alloca i32, align 4
		  %x = alloca i32, align 4
		  %y = alloca i32, align 4
		  %35 = load i32* %x, align 4
		  %36 = load i32* %y, align 4
		  %37 = load i32* %a, align 4
		  %mul17 = mul nsw i32 %35, %36
		  %add18 = add nsw i32 %mul17, %37

When cloned in a newly created basic block of newly created funtion :-
		  %0 = alloca i32, align 4
		  %1 = load i32* %a, align 4
		  %2 = alloca i32, align 4
		  %3 = load i32* %y, align 4
		  %4 = alloca i32, align 4
		  %5 = load i32* %x, align 4
		  %6 = mul nsw i32 %35, %36
		  %7 = add nsw i32 %mul17, %37

Now as we can see that operands of cloned instruction are still pointing to
old block. 
How can I resolve this reference to make it point to new block only?

I did see RemapInstruction and ValueMap, but being new to llvm I could not
able to make proper use of it.
So it would be great if you could help me implementing this. 
Thnx



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