Hal Finkel
2392da9d83
getSmallConstantTripMultiple should never return zero. ...
When the trip count is -1, getSmallConstantTripMultiple could return zero,
and this would cause runtime loop unrolling to assert. Instead of returning
zero, one is now returned (consistent with the existing overflow cases).
Fixes PR14167.
llvm-svn: 166612
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2392da9d83