[Bug regression/60363] New: [4.9 Regression]: logical_op_short_circuit, gcc.dg/tree-ssa/ssa-dom-thread-4.c scan-tree-dump-times dom1 "Threaded" 4

[hp at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60363

            Bug ID: 60363
           Summary: [4.9 Regression]: logical_op_short_circuit,
                    gcc.dg/tree-ssa/ssa-dom-thread-4.c
                    scan-tree-dump-times dom1 "Threaded" 4
           Product: gcc
           Version: 4.7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: regression
          Assignee: unassigned at gcc dot gnu.org
          Reporter: hp at gcc dot gnu.org
                CC: amker at gcc dot gnu.org
              Host: x86_64-unknown-linux-gnu
            Target: cris-axis-elf

This test previously passed, now it fails.
A patch in the revision range (last_known_working:first_known_failing)
208159:208165 exposed or caused this regression.  Since then it fails as
follows:

Running /tmp/hpautotest-gcc1/gcc/gcc/testsuite/gcc.dg/tree-ssa/tree-ssa.exp ...
...
FAIL: gcc.dg/tree-ssa/ssa-dom-thread-4.c scan-tree-dump-times dom1 "Threaded" 4

This is a logical_op_short_circuit target, and the FAIL seems common to such
targets, cf: <http://gcc.gnu.org/ml/gcc-testresults/2014-02/msg01894.html>
(AVR being the only target with test-results properly marked as such).
A target that may be of interest is too; "ARM cortex-M".

Author of suspect patch in revision range CC:ed.
ssa-dom-thread-4.c.078t.dom1 from r208207 attached. (There are 6 "Threaded")