This discussion has been locked.
You can no longer post new replies to this discussion. If you have a question you can start a new discussion

CM4 str.w 1 cycle ....

I'm checking cycles with DWT while single stepping instructions. I have the following piece :

110           *minp = min;
0100094c:   F8C91000            str.w      r1, [r9]
111           *maxp = max;
01000950:   F8C80000            str.w      r0, [r8]

Above & below them, there is no other immediate stores 

Now, the cycle counter tells me  1 cycle per each of those "str.w",   and with reference:
http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.ddi0439b/CHDDIGAC.html

..  note [b]:  "Neighboring load and store single instructions can pipeline their address and data phases. This enables these instructions to complete in a single execution cycle."

So this must be, what I see ? (otherwise I would have at least 2 cycles..) . But how does this work,  shouldn't the first str.w instruction be 2 cycles, but the immediately following one(s)  1 cycle ?   

If someone could explain this would be awesome.