[llvm-dev] How to insert instructions before each function calls?

[Dean Michael Berris via llvm-dev]

> On 20 Sep 2016, at 01:39, SHUCAI YAO <yaos4 at mcmaster.ca> wrote:
> 
> 
> Hi Dean,
> 
> Thank you very much.  I solved my problems by using the similar structure. 

Awesome -- happy to help!

> 
> BTW, I saw there is a hacky way to do the relative jump in function of LowerPATCHABLE_FUNCTION_ENTER. I think directional local symbol can implement it too: 
> 1. t = getDirectionalLocalSymbol  first; 
> 2. jmp t
> 3. then emit  nops
> 4. createDirectionalLocalSymbol(t)
> 
> Hope it can help. 
> 

Interesting. Thanks, I'll try that next time in that part of the woods again. :)

Cheers

-- Dean