[Bug target/61589] New: [4.10 Regression] FAIL: (gcc.c-torture/compile|gcc.dg)/pr34856.c on powerpc-apple-darwin9 with -O2 and above

["dominiq at lps dot ens.fr" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61589

            Bug ID: 61589
           Summary: [4.10 Regression] FAIL:
                    (gcc.c-torture/compile|gcc.dg)/pr34856.c on
                    powerpc-apple-darwin9 with -O2 and above
           Product: gcc
           Version: 4.10.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: dominiq at lps dot ens.fr
                CC: iains at gcc dot gnu.org, mrs at gcc dot gnu.org
              Host: powerpc-apple-darwin9
            Target: powerpc-apple-darwin9
             Build: powerpc-apple-darwin9

The tests gcc.c-torture/compile/pr34856.c and gcc.dg/pr34856.c fail on
powerpc-apple-darwin9 with -O2 and above and -m32. The ICE is

/opt/gcc/work/gcc/testsuite/gcc.dg/pr34856.c:29:1: internal compiler error: in
simplify_immed_subreg, at simplify-rtx.c:5333

Revision r209530 is OK, r210534 is not, likely a wide-int fallout.

The test gcc.dg/pr34856.c also fails on powerpc64-unknown-linux-gnu (see
https://gcc.gnu.org/ml/gcc-testresults/2014-06/msg02026.html).