RTL help needed

[Puneet Goyal]

I am facing some problem in understanding rtl
representation. Please help 

Ques:
What should i do to know which insn has plus or minus
or... in it, and how to address the operands of
operator like plus/minus/left shift/.......


This is my program:
int foo(int x, int y) {
	return x+y;
}
main() {
	int a=10;
	int b=1;
	int c=10;
	int e[4];
        a=a+10;  
	e[0] = 5;
	int d=foo(a,b)+c;
	e[1] = 6;

**********************************
On analyzing its rtl representation and following its
insn chain i.e.
 for (insn = get_insns (); insn; insn = NEXT_INSN
(insn)) 
{
print insn id
print defs(the web ids(DEFID)) and some related things
print use (webid for corresponding use and see its
register reference structure)

}

i printed following output:
*******
insn id=48 code=48 class=5

*******
insn id=5 code=43 class=7

*******
insn id=6 code=43 class=7
DEFID=2  refid=2 regno==60 insnid=6code=72 class=8

*******
insn id=7 code=43 class=7
DEFID=3  refid=4 regno==61 insnid=7code=72 class=8
USE**=2  refid=1 regno==60 insnid=7code=72 class=8

*******
insn id=8 code=43 class=7
DEFID=4  refid=6 regno==62 insnid=8code=72 class=8
USE**=3  refid=2 regno==61 insnid=8code=72 class=8

*******
insn id=9 code=43 class=7
DEFID=5  refid=8 regno==63 insnid=9code=72 class=8
USE**=4  refid=3 regno==62 insnid=9code=72 class=8

*******
insn id=10 code=43 class=7
DEFID=6  refid=9 regno==64 insnid=10code=72 class=8
USE**=5  refid=4 regno==63 insnid=10code=72 class=8

<blah blah blah>


*******
insn id=34 code=43 class=7
USE**=10  refid=19 regno==72 insnid=34code=72 class=8

*******
insn id=35 code=45 class=7
DEFID=21  refid=30 regno==15 insnid=35code=72 class=8
DEFID=20  refid=29 regno==14 insnid=35code=72 class=8
DEFID=19  refid=28 regno==13 insnid=35code=72 class=8
DEFID=18  refid=27 regno==12 insnid=35code=72 class=8
DEFID=17  refid=26 regno==11 insnid=35code=72 class=8
DEFID=16  refid=25 regno==10 insnid=35code=72 class=8
DEFID=15  refid=24 regno==9 insnid=35code=72 class=8
DEFID=14  refid=23 regno==8 insnid=35code=72 class=8
DEFID=13  refid=22 regno==2 insnid=35code=72 class=8
DEFID=12  refid=21 regno==1 insnid=35code=72 class=8
DEFID=11  refid=20 regno==0 insnid=35code=72 class=8
DEFID=11  refid=19 regno==0 insnid=35code=72 class=8

*******
insn id=36 code=43 class=7
DEFID=56  refid=66 regno==58 insnid=36code=72 class=8
USE**=11  refid=22 regno==0 insnid=36code=72 class=8


<blah blah blah>
**************************************************
**************************************************
**************************************************
**************************************************
**************************************************

What should i do to know which insn has plus or minus
or... in it, and how to address the operands of
operator like plus/minus/left shift/

I am in need of this If you can please help please
help.
Please reply asap

Dr. Puneet
IIT DELHI
INDIA


		
__________________________________
Do you Yahoo!?
Yahoo! Mail is new and improved - Check it out!
http://promotions.yahoo.com/new_mail