[Bug middle-end/48342] New: [4.7 Regression] Failures on powerpc-apple-darwin9 at revision 171653

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

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48342

           Summary: [4.7 Regression] Failures on powerpc-apple-darwin9 at
                    revision 171653
           Product: gcc
           Version: 4.7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: middle-end
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: dominiq@lps.ens.fr
                CC: jakub@redhat.com, vmakarov@redhat.com
              Host: powerpc-apple-darwin9
            Target: powerpc-apple-darwin9
             Build: powerpc-apple-darwin9


At revision 171653 regress (powerpc-apple-darwin9) has several new failures
with gfortran 

FAIL: gfortran.dg/pr41928.f90  -O  (internal compiler error)
FAIL: gfortran.dg/pr41928.f90  -O  (test for excess errors)
FAIL: gfortran.dg/pr43866.f90  -O1  (internal compiler error)
FAIL: gfortran.dg/pr43866.f90  -O1  (test for excess errors)
WARNING: gfortran.dg/pr43866.f90  -O1  compilation failed to produce executable
FAIL: gfortran.dg/g77/20010519-1.f  -O  (internal compiler error)
FAIL: gfortran.dg/g77/20010519-1.f  -O  (test for excess errors)
FAIL: gfortran.fortran-torture/execute/forall_7.f90,  -O1  (internal compiler
error)

(see http://gcc.gnu.org/ml/gcc-testresults/2011-03/msg02874.html). From
http://gcc.gnu.org/regtest/HEAD/native-logsum/gcc/testsuite/gfortran/gfortran.log.gzip
the ICEs are

Users/regress/tbox/svn-gcc/gcc/testsuite/gfortran.dg/pr41928.f90: In function
'moment':
/Users/regress/tbox/svn-gcc/gcc/testsuite/gfortran.dg/pr41928.f90:251:0: error:
insn does not satisfy its constraints:
(insn 19087 19086 1884 181 (set (reg:CC 79 v2 [7192])
    (mem/c:CC (plus:SI (reg/f:SI 1 r1)
        (const_int 1660 [0x67c])) [0 S4 A32]))
/Users/regress/tbox/svn-gcc/gcc/testsuite/gfortran.dg/pr41928.f90:90 358
{*movcc_internal1}
     (nil))
/Users/regress/tbox/svn-gcc/gcc/testsuite/gfortran.dg/pr41928.f90:251:0:
internal compiler error: in reload_cse_simplify_operands, at postreload.c:403

/Users/regress/tbox/svn-gcc/gcc/testsuite/gfortran.dg/pr43866.f90: In function
'foo':
/Users/regress/tbox/svn-gcc/gcc/testsuite/gfortran.dg/pr43866.f90:31:0: error:
insn does not satisfy its constraints:
(insn 490 489 440 6 (set (reg:CC 77 v0 [371])
    (mem/c:CC (plus:SI (reg/f:SI 1 r1)
        (const_int 76 [0x4c])) [0 S4 A32]))
/Users/regress/tbox/svn-gcc/gcc/testsuite/gfortran.dg/pr43866.f90:25 358
{*movcc_internal1}
     (nil))
/Users/regress/tbox/svn-gcc/gcc/testsuite/gfortran.dg/pr43866.f90:31:0:
internal compiler error: in reload_cse_simplify_operands, at postreload.c:403

/Users/regress/tbox/svn-gcc/gcc/testsuite/gfortran.dg/g77/20010519-1.f: In
function 'nmdimb':
/Users/regress/tbox/svn-gcc/gcc/testsuite/gfortran.dg/g77/20010519-1.f:1327:0:
error: insn does not satisfy its constraints:
(insn 4860 4859 4588 25 (set (reg/v/f:SI 60 f28 [orig:909 ddf ] [909])
    (mem/c:SI (plus:SI (reg/f:SI 1 r1)
        (const_int 904 [0x388])) [0 S4 A32]))
/Users/regress/tbox/svn-gcc/gcc/testsuite/gfortran.dg/g77/20010519-1.f:829 353
{*movsi_internal1}
     (nil))
/Users/regress/tbox/svn-gcc/gcc/testsuite/gfortran.dg/g77/20010519-1.f:1327:0:
internal compiler error: in reload_cse_simplify_operands, at postreload.c:403

/Users/regress/tbox/svn-gcc/gcc/testsuite/gfortran.fortran-torture/execute/forall_7.f90:
In function 'forall_7':
/Users/regress/tbox/svn-gcc/gcc/testsuite/gfortran.fortran-torture/execute/forall_7.f90:88:0:
error: insn does not satisfy its constraints:
(insn 2772 2771 1597 213 (set (reg:CC 78 v1 [1427])
    (mem/c:CC (plus:SI (reg/f:SI 1 r1)
        (const_int 10228 [0x27f4])) [0 S4 A32]))
/Users/regress/tbox/svn-gcc/gcc/testsuite/gfortran.fortran-torture/execute/forall_7.f90:74
358 {*movcc_internal1}
     (nil))
/Users/regress/tbox/svn-gcc/gcc/testsuite/gfortran.fortran-torture/execute/forall_7.f90:88:0:
internal compiler error: in reload_cse_simplify_operands, at postreload.c:403

Revision 171649 seems a likely culprit (see
http://gcc.gnu.org/ml/gcc-regression/2011-03/msg00565.html for others).