[llvm-dev] LLVM 3.8.0 - Adding new instruction to a basic block

[Simona Simona via llvm-dev]

On Mon, Sep 5, 2016 at 3:20 AM, Daniel Berlin <dberlin at dberlin.org> wrote:

>
>
> On Sun, Sep 4, 2016 at 1:06 PM, Simona Simona via llvm-dev <
> llvm-dev at lists.llvm.org> wrote:
>
>> Hello,
>>
>> I'm trying to add a new instruction after a given instruction in a basic
>> block.
>> Until LLVM 3.7, I was using the following code:
>>
>>    BB->getInstList().insertAfter(I, new_inst);
>>    [where both I and new_inst are Instruction*]
>>
>> In LLVM 3.8 however, the SymbolTableList was created as a wrapper over
>> iplist.
>> Could anyone please tell me how I can do the same type of insertion in
>> LLVM 3.8?
>>
>
>      auto InsertPt = I->getIterator();
>      BB->getInstList().insert(InsertPt, new_inst);
>
>
Thanks, Daniel!

In your example, isn't "insert" inserting "new_inst" *before* instruction
"I"?
As I would like to insert the "new_inst" instruction after "I", shouldn't
it be
         BB->getInstList().insertAfter(InsertPt, new_inst); ?

With insert I currently get the following error:
         Instruction does not dominate all uses!
         %0 = getelementptr inbounds i8, i8* getelementptr inbounds ([8 x
i8], [8 x i8]* @1, i32 0, i32 0)
         call void @myCall(i8* %0)

Regards,
Simona
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