Transforms/InstCombine/InstCombineCompares.cpp

290   /// TrueRangeEnd/FalseRangeEnd - In conjunction with First*Element, these
296   int TrueRangeEnd = Undefined, FalseRangeEnd = Undefined;
326       if (FalseRangeEnd == (int)i-1)
327         FalseRangeEnd = i;
360         FirstFalseElement = FalseRangeEnd = i; // First false element.
369         if (FalseRangeEnd == (int)i-1)
370           FalseRangeEnd = i;
372           FalseRangeEnd = Overdefined;
386         FalseRangeEnd == Overdefined)
461   if (FalseRangeEnd != Overdefined) {
462     assert(FalseRangeEnd != FirstFalseElement && "Should emit single compare");
463     // Generate (i-FirstFalse) >u (FalseRangeEnd-FirstFalse).
470                                   FalseRangeEnd-FirstFalseElement);