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Re: Breakpoints in delay slots
On Thu, 2006-10-19 at 10:52 +0100, Andrew STUBBS wrote:
> Michael Snyder wrote:
> > Sorry to be terse, but...
> >
> > (1) -O0
>
> Actually it can still happen that the first instruction in a line is the
> nop in the delay slot, but that can be considered a compiler bug.
>
> > (2) "Don't do that".
>
> That's hardly the developer's choice.
>
> In the real world people sometimes have to debug optimised code and
> "don't do it" is not a useful answer.
Well, I know, but in some cases it's the only answer we have.
There are some problems in debugging optimized code that are
not soluble, or not practically soluble.
Moreover, I separated (1) from (2) deliberately. In the absence
of the compiler placing a delay slot at the beginning of a function
or line, for the user to explicitly place a breakpoint in a delay
slot can arguably be called pilot error.