Order of using free registers in the stack

Assuming my program calls to a function:

void f(int arr[], int size)
{
  int i, j, k;
  // other code
}

In what order the compiler (gcc) is using the caller save registers: %eax, %ecx, %edx ?

Will it also use one of the calle save registers: %ebx, %esi, %edi in this case?

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