Force inline without -O2

Jie Zhang jie.zhang@analog.com
Tue Dec 29 10:25:00 GMT 2009


On 12/29/2009 10:01 AM, Thomas Martitz wrote:
> Am 29.12.2009 02:15, schrieb Jie Zhang:
>> Do you have a test case to show this issue?
>>
>>
>> Jie
>
>
> http://svn.rockbox.org/viewvc.cgi/trunk/firmware/target/arm/system-arm.h?revision=23641&view=markup
>
>
> The last 3 interrupt control functions expect immediates as operands in
> the inline assembly. That can only work if you pass compile time
> constants as parameters, and that can only be figured out if the
> function is inlined on every call. See also the svn history of that file
> and how I got trapped by -O0, as those function break.
>
This error does not mean GCC does not inline those functions. This is 
just because inlining does not imply constant propagation.


Jie



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