llvm dev - Apr 2013 - [LLVMdev] get the identifies of the unnamed temporaries from the instruction of LLVM IR

hi, Duncan Sands:
thanks for your reply old friend.
the reason why I want to get the unnamed value is that I am doing some
analysis based on the IR code. And IR is in the form of SSA(static single
assignment). so i need to get the operands of each instructions including a
lot of instructions like this (%4 = mul nsw i32 %1, %width). 
the unnamed values are the connection of instructions, if i can't get that,
how can i know the dependency of the instructions?



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Hi,

On 09/04/13 11:19, Dong Chen wrote:
> hi, Duncan Sands:
> thanks for your reply old friend.
> the reason why I want to get the unnamed value is that I am doing some
> analysis based on the IR code. And IR is in the form of SSA(static single
> assignment). so i need to get the operands of each instructions including a
> lot of instructions like this (%4 = mul nsw i32 %1, %width).
> the unnamed values are the connection of instructions, if i can't get
that,
> how can i know the dependency of the instructions?
if I is your multiplication instruction, then I->getOperand(0) is the first
argument (printed as %1 in the human readable IR).

Ciao, Duncan.

hi, Duncan:
thanks for your patience.
i have tried it. 
using instuction: errs()<<i->getOperand(0);
but it prints the address: someting like 0x1139700;
i checked the defination of getOperand() is Value* getOperand( unsigned int
i);
so is there someting i missed?



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