[Bug c/68329] New: [4.8 4.9]gcc using array index to accelerate loop running , why turn off at gcc 5.X

[zuogang at huawei dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68329

            Bug ID: 68329
           Summary: [4.8 4.9]gcc using array index to accelerate loop
                    running , why turn off at gcc 5.X
           Product: gcc
           Version: 4.8.5
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
          Assignee: unassigned at gcc dot gnu.org
          Reporter: zuogang at huawei dot com
  Target Milestone: ---