Re: [Mingw-users] default optimasatio in gcc...

[Earnie B. <ear...@ya...>]

--- Le...@ca... wrote:
> Hi
> 
> -O0 will create no optimasation. However, if i will not specify any 
> optimasation in the first place (ie no -O? options are passed) - what will 
> the default one be?

Here is what the gcc.info file says:

     Without `-O', the compiler's goal is to reduce the cost of
     compilation and to make debugging produce the expected results.
     Statements are independent: if you stop the program with a
     breakpoint between statements, you can then assign a new value to
     any variable or change the program counter to any other statement
     in the function and get exactly the results you would expect from
     the source code.

     Without `-O', the compiler only allocates variables declared
     `register' in registers.  The resulting compiled code is a little
     worse than produced by PCC without `-O'.

Cheers,

=====
Earnie Boyd
mailto:ear...@ya...

---         <http://earniesystems.safeshopper.com>         ---
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