[PATCH] Decrease hash-table-verification-limit from 100 to 10.

[Jeff Law]

On 6/19/19 7:15 AM, Martin Liška wrote:
> Hi.
> 
> The patch is about decrease of verification limit. I collected following statistics:
> 
> godot WPA:
> 
> hash-table-verification-limit=0: 66s
> hash-table-verification-limit=10: 69s
> hash-table-verification-limit=100: 94s
> 
> make all runtime libraries in GCC for --disable-bootstrap --disable-libsanitizer --disable-multilib
> 
> =0: 127s (17m30s user time)
> =10: 130s (18m17s user time)
> =100: 150s (20m37s user time)
> 
> That's why I'm suggesting default equal to 10. Moreover as items are rehashed during a hash table
> growth we always compare different items.
> 
> Ready for trunk?
> Thanks,
> Martin
> 
> gcc/ChangeLog:
> 
> 2019-06-19  Martin Liska  <mliska@suse.cz>
> 
> 	* params.def (PARAM_HASH_TABLE_VERIFICATION_LIMIT): Decrease
> 	to 10.
OK
jeff