Future patches will remove some redundant instructions for runtime
checks, which brings this test case slightly below the default limit of
128. Force a lower limit to preserve the original spirit of the test
(checking that no interleaving happens if the number of checks is
above he threshold)
The runtime check threshold should also restrict interleave count.
Otherwise, too many runtime checks will be generated for some cases.
Reviewed By: fhahn, dmgreen
Differential Revision: https://reviews.llvm.org/D122126
