Bug 1023300. Add collectRangeInfoPreTrunc for MDiv. r=h4writer.
Bug 1025050. Add collectRangeInfoPreTrunc for MMul. r=h4writer.
Bug 1026365. Add analyzeEdgeCasesForward and collectRangeInfoPreTrunc for MMod. r=h4writer
Bug 1026512. Add collectRangeInfoPreTrunc for MToInt32. r=h4writer.