[Bug rtl-optimization/49429] New: dse.c changes to fix PR44194 (r175063) cause execution failures

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

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49429

           Summary: dse.c changes to fix PR44194 (r175063) cause execution
                    failures
           Product: gcc
           Version: 4.7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: rtl-optimization
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: sje@cup.hp.com
                CC: eraman@google.com
        Depends on: 44194
            Target: ia64-hp-hpux11* powerpc-apple-darwin9.8.0


The fix for PR 44194, version r175063, causes failures on ia64-hp-hpux11.23 and
powerpc-apple-darwin9.8.0.



gcc.dg/struct-by-value-1.c fails on HP-UX with -O2 optimization.  This was the
test I used on HP-UX to track down the specific version that caused the
failure.

These fortran tests fail on both platforms and I think are caused by the 
same checkin:


FAIL: gfortran.dg/dependency_25.f90  -O1  execution test
FAIL: gfortran.dg/dependency_25.f90  -O2  execution test
FAIL: gfortran.dg/dependency_25.f90  -Os  execution test
FAIL: gfortran.dg/der_array_1.f90  -O1  execution test
FAIL: gfortran.dg/der_array_1.f90  -O2  execution test
FAIL: gfortran.dg/der_array_1.f90  -O3 -fomit-frame-pointer  execution test
FAIL: gfortran.dg/der_array_1.f90  -O3 -fomit-frame-pointer -funroll-loops 
execution test
FAIL: gfortran.dg/der_array_1.f90  -O3 -fomit-frame-pointer -funroll-all-loops
-finline-functions  execution test
FAIL: gfortran.dg/der_array_1.f90  -O3 -g  execution test
FAIL: gfortran.dg/structure_constructor_1.f03  -O1  execution test
FAIL: gfortran.dg/structure_constructor_1.f03  -O2  execution test
FAIL: gfortran.dg/structure_constructor_1.f03  -O3 -fomit-frame-pointer 
execution test
FAIL: gfortran.dg/structure_constructor_1.f03  -O3 -fomit-frame-pointer
-funroll-loops  execution test
FAIL: gfortran.dg/structure_constructor_1.f03  -O3 -fomit-frame-pointer
-funroll-all-loops -finline-functions  execution test
FAIL: gfortran.dg/structure_constructor_1.f03  -O3 -g  execution test