[Bug tree-optimization/61560] New: FAIL: gcc.dg/tree-ssa/ssa-fre-32.c on arm

[ktkachov at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61560

            Bug ID: 61560
           Summary: FAIL: gcc.dg/tree-ssa/ssa-fre-32.c on arm
           Product: gcc
           Version: 4.10.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: ktkachov at gcc dot gnu.org

Created attachment 32972
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=32972&action=edit
fre pass diff between bad and good dumps

On arm-none-eabi I see a regression in the aforementioned test:
FAIL: gcc.dg/tree-ssa/ssa-fre-32.c scan-tree-dump-times fre1 "return
x_\\d+\\(D\\);" 2

Curiously this doesn't happen for an aarch64-none-elf target built from the
same revision (r211782)

I'm attaching the diff between the failing (bad) fre dump for arm and the
passing (good) dump from aarch64