Trying to eliminate optimizations on some functions with VC++

Paul Dufresne dufrp at
Sun Aug 8 12:55:28 PDT 2004

Hi, I normally use MINGW (through Bloodshed DEV-C++) without problems on 
MINGW is Minimal GNU for Windows.

But to try your #pragma stuff, I just reinstalled free VC++ Toolkit 2003.

I tried with the #pragma around the function (not around the function 

I have put all the relevant files in a test directory.

With cl vm.c -DNDEBUG=1 vm.c boot.c file.c
I get to slate prompt.

But with cl -O2 -DNDEBUG=1 vm.c boot.c file.c
or cl -Ox -DNDEBUG=1 vm.c boot.c file.c
I get Unhandled exception before Slate prompt.

Here some optimizations switches:


/O1 minimize space                       /Op[-] improve floating-pt 
/O2 maximize speed                       /Os favor code space
/Oa assume no aliasing                   /Ot favor code speed
/Ob<n> inline expansion (default n=0)    /Ow assume cross-function aliasing
/Od disable optimizations (default)      /Ox maximum opts. (/Ogityb2 /Gs)
/Og enable global optimization           /Oy[-] enable frame pointer 
/Oi enable intrinsic functions

Any other good candidate to not optimize?
PS: I read throug IRC logs, so I can read some suggestions without Emails.

Des mécanismes de contrôle parental puissants permettent à votre enfant de 
découvrir tout ce qu’Internet a à offrir. Commencez dès 
maintenant à profiter de tous les avantages de MSN Premium et obtenez les 
deux premiers mois GRATUITS*.

More information about the Slate mailing list