RFR(S): 8204157: Compiler.sunflow hangs after JDK-8192992

[Tobias Hartmann]

Hi Nils,

looks good to me.

Thanks,
Tobias

On 27.06.2018 17:00, Nils Eliasson wrote:
> Hi,
> 
> I didn't fix the load scheduling properly in JDK-8192992. I introduced a loop check on phi-nodes
> when doing scheduling. The missing part was that non-loop-phis fell through and didn't affect the
> load placement at all. (Phis are not pushed on the search stack so any store happening after was not
> observed.)
> 
> With this fix loop-phis still force the load into the block preceding the phi (so that any store in
> the loop can't interfere with the load from the backedge). The new part is that regular phis fall
> through to next block and affects the load scheduling as a normal store would have.
> 
> Bug: https://bugs.openjdk.java.net/browse/JDK-8204157
> 
> Webrev: http://cr.openjdk.java.net/~neliasso/8204157/webrev.01/
> 
> Please review,
> 
> Nils
>