[Bug tree-optimization/63747] New: [5 regression] icf mis-compares switch gimple

[joey.ye at arm dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63747

            Bug ID: 63747
           Summary: [5 regression] icf mis-compares switch gimple
           Product: gcc
           Version: 5.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: joey.ye at arm dot com

ARM -Os bootstrap breaks. Root cause lies in ipa-icf-gimple.c where
compare_gimple_switch doesn't compare case numbers correctly. Will upload a
reduced test case soon.