[sdcc-devel] [ sdcc-Feature Requests-1581366 ] --model-large, function parameter accessed inefficiently

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Feature Requests item #1581366, was opened at 2006-10-20 17:28
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Category: None
Group: None
Status: Open
Priority: 5
Submitted By: Frieder Ferlemann (frief)
Assigned to: Nobody/Anonymous (nobody)
Summary: --model-large, function parameter accessed inefficiently

Initial Comment:
/*
   These routines generate unnecessarily large code for
   --model-large and --xstack
   (97 byte)

   The code could have been as compact as for
   --model-small --model-medium and --stack-auto
   (46 byte - less than HALF the size!!)
 */

__sfr   __at(0x99) SBUF ;
__sbit  __at(0x99) TI;

#if 1
__sfr16 __at(0xe4e3)     SPECIAL_FUNC_I;
__sfr32 __at(0xe4e3e2e1) SPECIAL_FUNC_L;
#else
unsigned int  SPECIAL_FUNC_I;
unsigned long SPECIAL_FUNC_L;
#endif


/* putchar routine as in
sdcc/support/regression/ports/mcs51/support.c */
void putchar (char c)
{
  while (!TI)
    ;
  TI = 0;
  SBUF = c;
}


unsigned int do_func_int (unsigned int a)
{
  SPECIAL_FUNC_I = a; // a+1
  return SPECIAL_FUNC_I;
}


/* this was not compiled correctly on SDCC < #4420 */
unsigned long do_func_long (unsigned long a)
{
  SPECIAL_FUNC_L = a; // a+1
  return SPECIAL_FUNC_L;
}


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