On 2006-06-30, David Brown <[email protected]> wrote:
> Just for fun, I tried compiling the code with "two" changed to an unsigned
> char. My mps430 compiler (3.2.3) then gives
>
> mov.b &P6IN, r15
> rla.b r15
> mov.b r15, &two
> ret
>
> In other words, it makes the same mistake you did and
> disregards the "volatile" qualifier. This is far more serious
> than the original question - it is incorrect code, rather than
> just inefficient code.
Yow! That is pretty scary.
Embedded code depends pretty heavily on the compiler's proper
observance of the "volatile" keyword. Having a compiler ignore
it is a serious bug in my world.
Damn. It might be time to spring for the Rowley compiler.
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