Hello, I'm trying to distinguish local variable assigned to register from a binary. I got that compilers will assign some local variable to registers rather than stack for performance reason, while which variable depends on the compiler. I also found there is a calling convention on x64 that the first six arguments are passed to register (when the class is INTEGER). However, I got almost nothing about the rest of the case. I am aware that compilers are free to arrange variables in both stack and registers, but what pricinple or specification will they follow? Is there any materials about gcc's behavior on deciding which variables should be kept in registers? Or any other hint to find variables stored in register from a bianry? visitor20
