[Bug rtl-optimization/63895] New: [5 Regression] r217588 miscompled 178.galgel from cpu2000

[Bug rtl-optimization/63895] New: [5 Regression] r217588 miscompled 178.galgel from cpu2000

[hjl.tools at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63895

            Bug ID: 63895
           Summary: [5 Regression] r217588 miscompled 178.galgel from
                    cpu2000
           Product: gcc
           Version: 5.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: rtl-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: hjl.tools at gmail dot com
                CC: vmakarov at redhat dot com

On Linux/x86-64, r217588 miscompiled 178.galgel from cpu2000:

# gfortran     -O3 -funroll-loops -ffast-math  -DSPEC_CPU2000_LP64 ....
...
0203:                 C1 = (  -0.3411    ,  0.2388    )
                      C1 = (   0.2181E+13, -0.3477E+12)
                                        ^
0206:                 Error in right eigenvector is   0.000    
                      Error in right eigenvector is   156.7    
                                                          ^
0249:                 D(Lambda)/D(Gr) = (   0.3254E-04,  0.6779E-04)
                      D(Lambda)/D(Gr) = (  -0.4526E-13, -0.6501E-13)
                                                     ^
0251:            Calculated estimations of errors:
        Error in BifGel: D(alpha)/D(Anu) = 0
       ^
0252:                 Error in calculation of Omega       =  0.000    
        BifGel: weakly nonlinear analysis failed
       ^
0253:                 Error in calculation of Amu2        =  0.000    
        Error return from BifGel called by Cyklap: ier=  139
             ^
'galgel.out' short

[Bug rtl-optimization/63895] [5 Regression] r217588 miscompled 178.galgel from cpu2000

[hjl.tools at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63895

H.J. Lu <hjl.tools at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2014-11-15
     Ever confirmed|0                           |1

--- Comment #1 from H.J. Lu <hjl.tools at gmail dot com> ---
It also miscompiled

 1x171.swim 1x176.gcc 1x178.galgel 1x253.perlbmk 1x301.apsi

from SPEC CPU 2000 on ia32 with

-m32     -O3 -funroll-loops -msse2 -mfpmath=sse -ffast-math

[Bug rtl-optimization/63895] [5 Regression] r217588 miscompled 178.galgel from cpu2000

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63895

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |wrong-code
             Target|                            |x86_64-*-*
           Priority|P3                          |P1
   Target Milestone|---                         |5.0

[Bug rtl-optimization/63895] [5 Regression] r217588 miscompled 178.galgel from cpu2000

[vmakarov at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63895

Vladimir Makarov <vmakarov at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |vmakarov at gcc dot gnu.org

--- Comment #2 from Vladimir Makarov <vmakarov at gcc dot gnu.org> ---
Sorry, I can not reproduce any reported failures.  I guess it was before the
patch

https://gcc.gnu.org/ml/gcc-patches/2014-11/msg01995.html

The patch most probably fixed it.

Could you confirm that the problem was gone (or still exists).

[Bug rtl-optimization/63895] [5 Regression] r217588 miscompled 178.galgel from cpu2000

[hjl.tools at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63895

H.J. Lu <hjl.tools at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED

--- Comment #3 from H.J. Lu <hjl.tools at gmail dot com> ---
Fixed by r217624.