GCC optimizations

? conditional (ternary) operators 和 if-else statements 的效能比較

參考

1. Effective GCC/Clang optimizations for Embedded systems

https://lirobo.blogspot.com/2009/07/gcc-inline-assembly.html

https://lirobo.blogspot.com/2013/12/inline.html

-O0 或預設
-O1, -O
-O2
-O3
-Os
-Ofast

-f
-Q --help=optimizers



http://gcc.gnu.org/onlinedocs/gcc/Optimize-Options.html
http://gcc.gnu.org/onlinedocs/gcc/Target-Builtins.html
http://gcc.gnu.org/onlinedocs/gcc/Pragmas.html
http://gcc.gnu.org/onlinedocs/gcc/Inline.html