[PATCH PR66796]Obvious, revise check condition in test case

[Bin Cheng]

Hi,
Turns out the check on number of iv_uses is still too large on target hppa.  It 
only supports small offset in REG+offset addressing mode for floating point 
load/store.  Even with this restriction, the grouped version is better than 
before, so I am going to further relax the check condition for it.
Test run on HPPA.  Applied as an obvious change.

Thanks,
bin

gcc/testsuite/ChangeLog
2016-01-18  Bin Cheng  <bin.ch...@arm.com>

        PR tree-optimization/66797
        * gcc.c-torture/execute/pr65447.c: Relax check condition.