instruction codes - novice questions

[Dragos Badea]

 
Hi!
 
1. Here it is part of after-flow-pass 
dump. 
 
(insn 9 6 11 (set (reg:SI 
22 )
(mem/f:SI (plus:SI (reg:SI 6 
%ebp)
(const_int -8 [0xfffffff8])) 0)) 48 
{movsi+2} (nil)
(nil))
 
Could you tell me please, when 
were
48 {movsi+2} 
fields added and which is their 
meaning (what is +2 ?).
 
2.Are the instructions scheduled by 
sched.c in a 1-1 relation to asm output instructions (without taking into 
account the afterwards effect of peephole optimizations) ?
 
 
 Thank you very much.
 Adrian