[PATCH v3] pass: Run cleanup passes before SLP [PR96789]

[Kewen.Lin]

Hi Lyon,

Thanks for reporting and sorry for the failure.

>> The patch was updated as your comments above, re-tested on Power8
>> and committed in r11-4637.
>>
> 
> The new test gcc.dg/tree-ssa/pr96789.c fails on arm:
> FAIL: gcc.dg/tree-ssa/pr96789.c scan-tree-dump dse3 "Deleted dead store:.*tmp"
> 
> Can you check?
> 

Could you help to provide the configuration command?

I tried the one from https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96376#c3,
but I can't reproduce it with options -O2 -funroll-loops -ftree-vectorize
-fdump-tree-dse-details.  I guess I must miss something.

BR,
Kewen