[LLVMdev] type of the store operand

[John Criswell]

Zheng Wang wrote:
> Hiya,
>
> I want to know what's the type of the operand (value) along with the
> store instruction. For example, the following instruction store the
> content in an integer type pointer scevgep99.1 to the address another
> integer pointer points to.
>
> *"store i8* %scevgep99.1, i8** %scevgep92.1, align 4"*
>
> It seems there is no APIs in StoreInst can do this.
>
> Is there any way to figure the type of the operand of the store instruction?
>   

You can do this by first using getOperand() to get the operand of the 
store instruction which interests you and then calling getType() on the 
resulting Value * to get the type of the value being stored.

It'll look something like this if SI is a pointer to a StoreInst object 
and i is the index of the operand being stored to memory:

SI->getOperand(i)->getType();

-- John T.

>
> -----------------------------------
>
>  %scevgep92.1 = bitcast i8* %scevgep.1 to i8**   ; <i8**> [#uses=1]
>   %tmp96.1 = mul i32 %36, %41                     ; <i32> [#uses=1]
>   %tmp97.1 = add i32 %tmp96.1, 32                 ; <i32> [#uses=1]
>   %tmp98.1 = add i32 %tmp97.1, %61                ; <i32> [#uses=1]
>   %scevgep99.1 = getelementptr i8* %56, i32 %tmp98.1 ; <i8*> [#uses=1]
>   store i8* %scevgep99.1, i8** %scevgep92.1, align 4
>   %scevgep.2 = getelementptr i8* %0, i32 112      ; <i8*> [#uses=1]
>   %scevgep92.2 = bitcast i8* %scevgep.2 to i8**   ; <i8**> [#uses=1]
>
> Cheers,
> Zheng
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