This test does not work if block size is greater than wave size
since it relies on lock-step execution of the kernel in the block.
If there are more than waves in the block, the threads in the block
miss synchronization since one wave may finish before another wave.
Due to this bug, the test fails on GFX10 wave32 mode.
This patch fixes that so that it works for block size greater than
wave size.
Change-Id: Ie0097066081df36cb6fe025a71d0ee5a83ec00a2
[ROCm/hip commit: 78269dcbe5]
Yaxun (Sam) Liu
443f975e97