Re: RISC - largish (code listed)

["Martin Dowie" <martin.dowie@baesystems.com>]

oops forgot the assembler for the instantiation.. still not a lot extra for
these 2 routines.

Martin Dowie <martin.dowie@baesystems.com> wrote in message
news:3ab9c0e9$1@pull.gecm.com...
> Something like this? Seems _well_ dangerous but also seems to produce very
> little code...
>
> Ted Dennison <dennison@telepath.com> wrote in message
> news:LWKt6.1865$94.2578@www.newsranger.com...
> > That's why if the object is largish I typically use unchecked_conversion
> on
> > pointers to the object instead. Depending on the smarts of the compiler,
> that
> > might not generate any code at all.
> >
> > I don't like "for use at" overlays. For one thing, initializations get
> (re)done
> > when the overlay happens, which could wipe out important stuff. For
> another, the
> > aliasing is (generally) given a much wider scope than is achievable with
> > unchecked conversion.

Ltext2:
.stabn
68,0,3,LM19-_test_unchecked_access_conversion__my_conversions__to_object1_po
inter$2.8
LM19:
 pushl %ebp
 movl %esp,%ebp
 subl $4,%esp
 movl %ecx,-4(%ebp)
.stabn
68,0,5,LM20-_test_unchecked_access_conversion__my_conversions__to_object1_po
inter$2.8
LM20:
 movl 8(%ebp),%eax
 pushl %eax
 movl -4(%ebp),%ecx
 call _test_unchecked_access_conversion__string_conversions__to_address.7
 addl $4,%esp
 movl %eax,%eax
 pushl %eax
 movl -4(%ebp),%ecx
 call _test_unchecked_access_conversion__record_conversions__to_pointer.4
 addl $4,%esp
 movl %eax,%edx
 movl %edx,%eax
 jmp L10
 .align 2,0x90
.stabn
68,0,5,LM21-_test_unchecked_access_conversion__my_conversions__to_object1_po
inter$2.8
LM21:
L10:
 movl %ebp,%esp
 popl %ebp
 ret
Lscope4:
.stabs
"",36,0,0,Lscope4-_test_unchecked_access_conversion__my_conversions__to_obje
ct1_pointer$2.8
 .align 4
.stabs
"test_unchecked_access_conversion__my_conversions__to_object2_pointer$2:f(0,
46),test_unchecked_access_conversion__my_conversions__to_object2_pointer$2,t
est_unchecked_access_conversion",36,0,8,_test_unchecked_access_conversion__m
y_conversions__to_object2_pointer$2.9
.stabs "obj1_ptr:p(0,29)",160,0,15,8
_test_unchecked_access_conversion__my_conversions__to_object2_pointer$2.9:
.stabn
68,0,8,LM22-_test_unchecked_access_conversion__my_conversions__to_object2_po
inter$2.9
LM22:
 pushl %ebp
 movl %esp,%ebp
 subl $4,%esp
 movl %ecx,-4(%ebp)
.stabn
68,0,10,LM23-_test_unchecked_access_conversion__my_conversions__to_object2_p
ointer$2.9
LM23:
 movl 8(%ebp),%eax
 pushl %eax
 movl -4(%ebp),%ecx
 call _test_unchecked_access_conversion__record_conversions__to_address.5
 addl $4,%esp
 movl %eax,%eax
 pushl %eax
 movl -4(%ebp),%ecx
 call _test_unchecked_access_conversion__string_conversions__to_pointer.6
 addl $4,%esp
 movl %eax,%edx
 movl %edx,%eax
 jmp L11
 .align 2,0x90
.stabn
68,0,10,LM24-_test_unchecked_access_conversion__my_conversions__to_object2_p
ointer$2.9
LM24:
L11:
 movl %ebp,%esp
 popl %ebp
 ret