On Feb 8, 2021, at 11:38 AM, Gibney, Dave <gib...@wsu.edu> wrote:
> 
> 
>          PTR      DC    A(0)
> label L     R15,PTR
>          LTR   R15,R15
>          BNZ   CALLIT
>          ...        ...                                    Code that always 
> leaves the same value in R15
>          ST    R15,PTR
> CALLIT   BALR  R14,R15
> 
> Still incur cache flush?

If PTR is in the same cache line as your code, then yes.


-- 
Pew, Curtis G
curtis....@austin.utexas.edu

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