Problem with Label Constant (LC0) in RTL

[nitin jain]

Hi,

I have a problem with "Label Constant" ex.(LC0) in
RTL.

When i give the following c program as input to gcc
with the command 'gcc -dr test.c'.
               
----------------------------------------------------
main(){
      int x,y;
      float m,n,a,b;

      x=y=9;
      if(x==y){
              x=6;
              m=x;
      }
      else{
          y=3;
          n=y;
      }
      a=b=6.5;
      if(x<56);
      if(x>56);
      m=n=6.5;
}
               
---------------------------------------------------
This is the RTL output
;; Function main
-
-
-
(insn 45 42 47 (set (reg:SF 45)
(mem/u/f:SF (symbol_ref/u:SI ("*.LC0")) 0)) -1
(nil)(nil))
-
-
-
-
(insn 60 57 62 (set (reg:SF 46)
     (mem/u/f:SF (symbol_ref/u:SI ("*.LC0")) 0)) -1
      (nil)(nil))
-
-               
-----------------------------------------------------
In this output what is the meaning of ("*.LC0") and   
 why the same label is repeated at both places.

Thanks in advance.

Nitin Jain



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Nitin Jain,                       
H-8 ,Room No: 24
I.I.T.Bombay, Powai, Mumbai.
Mail-id: nitin-mbm@yahoo.com 
         nitinj@cse.iitb.ac.in
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