[Bug tree-optimization/34027] [4.3 regression] -Os code size nearly doubled

[rguenth at gcc dot gnu dot org]

------- Comment #9 from rguenth at gcc dot gnu dot org  2007-11-12 13:28 -------
We now generate with -Os -m32

foobar:
        pushl   %ebp
        movl    %esp, %ebp
        subl    $8, %esp
        pushl   $0
        pushl   $1000000000
        pushl   12(%ebp)
        pushl   8(%ebp)
        call    __umoddi3
        addl    $16, %esp
        leave
        ret

and with -O2 -m32:

foobar:
        pushl   %ebp
        movl    %esp, %ebp
        subl    $24, %esp
        movl    12(%ebp), %edx
        movl    8(%ebp), %eax
        cmpl    $0, %edx
        ja      .L5
        cmpl    $999999999, %eax
        ja      .L5
        leave
        ret

which for -Os is smaller than what we generated with 4.2 (and for -O2 it
is slightly larger).

So, fixed.


-- 

rguenth at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|                            |FIXED


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34027