How to stop Hex Rays optimizations?

Question

I know it's not a bug, but a feature. Hex Rays found that there's a variable which is set to specific value, thus there's no need to display the branches where the code will never be run, so it warns me about the optimizations:

conditional instruction was optimized away because of '%var_8.1==0'

Is there any way to make it show all the code branches and stop optimizing it?

Answer 1

Try marking the variable as volatile

Answer 2

Hope this will help other people face with this problem in the future. The answer is: make all related-variables volatile. See the image bellow:

Either code_compress_magic or Signature must be set as a volatile type. This will make Hexrays decompiler happy.