[Bug c/35860] New: code bloat caused by -fsplit-wide-types

[a dot kaiser at gmx dot net]

Command:
  avr-gcc -O1 -S div32_7.c
or
  avr-gcc -O1 -fno-split-wide-types -S div32_7.c

Code size 4.1.2: 0x28
Code size 4.3.0: 0x68
Code size 4.3.0: 0x28 with -fno-split-wide-types

//----------------
unsigned long udivr32_7( unsigned long a, unsigned char b, unsigned char *r )
{
  unsigned char i, t;

  for(  t = 0, i = 32; i ; i-- ){
    t += t;
    if( a & 0x80000000UL )
      t++;
    a += a;
    if( t >= b ){
      t -= b;
      a |= 1;
    }
  }
  *r = t;
  return a;
}
//----------------


-- 
           Summary: code bloat caused by -fsplit-wide-types
           Product: gcc
           Version: 4.3.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: a dot kaiser at gmx dot net
  GCC host triplet: winavr 20080402 release
GCC target triplet: avr


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35860