[Bug regression/52696] New: [4.6 Regression]: g++.dg/tree-ssa/pr44706.C scan-tree-dump-not fnsplit "Splitting function"

["hp at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52696

             Bug #: 52696
           Summary: [4.6 Regression]: g++.dg/tree-ssa/pr44706.C
                    scan-tree-dump-not fnsplit "Splitting function"
    Classification: Unclassified
           Product: gcc
           Version: 4.6.4
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: regression
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: hp@gcc.gnu.org
                CC: hubicka@gcc.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)
185724:185740
exposed or caused this regression.  Since then it fails as follows:

Running /tmp/hpautotest-gcc46/gcc/gcc/testsuite/g++.dg/dg.exp ...
...
FAIL: g++.dg/tree-ssa/pr44706.C scan-tree-dump-not fnsplit "Splitting function"

The message in g++.log indicates that a log-entry from an optimizaton pass is
missing; something didn't happen.  Maybe it's just the test-case that needs
updating, though that's only an uninitiated guess:

spawn /tmp/hpautotest-gcc46/cris-elf/gccobj/gcc/testsuite/g++/../../g++
-B/tmp/hpautotest-gcc46/cris-elf/gccobj/gcc/testsuite/g++/../../
/tmp/hpautotest-gcc46/gcc/gcc/testsuite/g++.dg/tree-ssa/pr44706.C -nostdinc++
-I/tmp/hpautotest-gcc46/cris-elf/gccobj/cris-elf/libstdc++-v3/include/cris-elf
-I/tmp/hpautotest-gcc46/cris-elf/gccobj/cris-elf/libstdc++-v3/include
-I/tmp/hpautotest-gcc46/gcc/libstdc++-v3/libsupc++
-I/tmp/hpautotest-gcc46/gcc/libstdc++-v3/include/backward
-I/tmp/hpautotest-gcc46/gcc/libstdc++-v3/testsuite/util -fmessage-length=0 -O3
-fdump-tree-fnsplit -S -isystem
/tmp/hpautotest-gcc46/cris-elf/gccobj/cris-elf/./newlib/targ-include -isystem
/tmp/hpautotest-gcc46/gcc/newlib/libc/include -o pr44706.s
PASS: g++.dg/tree-ssa/pr44706.C (test for excess errors)
FAIL: g++.dg/tree-ssa/pr44706.C scan-tree-dump-not fnsplit "Splitting function"

Author of the only suspect patch in the revision range CC:ed.