Dear Richard:
Now I get it, thanks for the help! :-)
Richard Henderson <r...@twiddle.net> 於 2015/5/24 (週日) 6:21 AM 寫道﹕
On 05/23/2015 05:26 AM, 浩倫 魏 wrote:
> So there are some points that I hope you can help me out:
> 1. Is every guest load/store instruction would be translated to qemu_ld/st IR?
Yes.
> 2. What about another TCG IR "ld/st"? What kind of guest instructions would
> cause TCG generates that IRs and for what purpose?
For instance, vector instructions are often implemented without TCG
temporaries, but instead using ld/st to load the data from the ENV pointer
directly. You can see that in the ARM and i386 targets.
Otherwise, there are sometimes less-used system values that do not warrent a
TCG temporary. You can see that in the alpha target.
r~
