Compiler Support - x86 pic vs pie

Local global variables and functions are optimized in pie
External global variables and functions are the same as pic

When compiled with -fpic:

...
add    $0x3,%ebx 
    R_386_GOTPC _GLOBAL_OFFSET_TABLE_
...
int x = local_global_func();
call   33 <main+0x29>
    R_386_PLT32 local_global_func
...
local_global_var = 0x20;
mov    0x0(%ebx),%eax
    R_386_GOT32 local_global_var
movl   $0x20,(%eax)

When compiled with -fpie:

...
add    $0x3,%ebx
    R_386_GOTPC _GLOBAL_OFFSET_TABLE_
...
int x = local_global_func();
call   33 <main+0x29>
    R_386_PC32 local_global_func
...
local_global_var = 0x20;
movl   $0x20,0x0(%ebx)
    R_386_GOTOFF local_global_var