[sdcc-devel] [ sdcc-Bugs-454266 ] Bizarre (?) code generation

[<no...@so...>]

Bugs item #454266, was opened at 2001-08-22 09:50
You can respond by visiting: 
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Category: Icode generator
Group: None
Status: Open
Resolution: None
Priority: 5
Submitted By: Russel Winder (russel_winder)
Assigned to: Nobody/Anonymous (nobody)
Summary: Bizarre (?) code generation

Initial Comment:
Array data items are code generated as code rather than
byte initializations.

The program:

char x [] = 
{
  'a', 'b', 'c'
};

int main(){
}

results in the following code:


000D                      77 __sdcc_init_data:
                             78 ;	arrayInitialization.c 8
   000D 75*00 61             79 	mov	_x,#0x61
   0010 75*01 62             80 	mov	(_x + 0x0001),#0x62
   0013 75*02 63             81 	mov	(_x + 0x0002),#0x63
}

which seems very strange to me since it quadruples the
amount of memory used.  Since the eventual medium of
down load is Intel Hex records which can initialize
memory explicitly it seems that using code for the
initialization is totally the wrong thing to do.

Unless of course I am missing something.

results in



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