topic Re: S32DS set -O2(optimize more) to the C/C++ compiler, as compared to -O(none optimize) in S32 Design Studio

S32DS set -O2(optimize more) to the C/C++ compiler, as compared to -O(none optimize)

王标王 — Thu, 31 Mar 2022 04:10:08 GMT

Hi, NXP experts

On the optimization page, we change to O2 setting options. What will be optimized and what problems may be caused by this optimization, and could you please give me one or two examples to help explain the differences between -O2 and -O0.

Here is the options picture, thanks.

Re: S32DS set -O2(optimize more) to the C/C++ compiler, as compared to -O(none optimize)

mikedoidge — Fri, 07 Apr 2023 18:32:54 GMT

Hello @王标王 ,

Probably you will find this article useful to answer your question.

https://gcc.gnu.org/onlinedocs/gcc-4.9.0/gcc/Optimize-Options.html

Best Regards,

Mike