[Bug rtl-optimization/49414] New: gcc.dg/pr44194-1.c failed

[Bug rtl-optimization/49414] New: gcc.dg/pr44194-1.c failed

[hjl.tools at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49414

           Summary: gcc.dg/pr44194-1.c failed
           Product: gcc
           Version: 4.7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: rtl-optimization
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: hjl.tools@gmail.com
                CC: eraman@google.com


On Linux/ia32, revision 175063 gave

FAIL: gcc.dg/pr44194-1.c scan-rtl-dump dse1 "global deletions = 2"

[Bug rtl-optimization/49414] gcc.dg/pr44194-1.c fails

[ebotcazou at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49414

Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2011.06.15 16:52:22
                 CC|                            |ebotcazou at gcc dot
                   |                            |gnu.org
   Target Milestone|---                         |4.7.0
            Summary|gcc.dg/pr44194-1.c failed   |gcc.dg/pr44194-1.c fails
     Ever Confirmed|0                           |1

--- Comment #1 from Eric Botcazou <ebotcazou at gcc dot gnu.org> 2011-06-15 16:52:22 UTC ---
Indeed.

[Bug rtl-optimization/49414] gcc.dg/pr44194-1.c fails

[eraman at google dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49414

--- Comment #2 from Easwaran Raman <eraman at google dot com> 2011-06-15 16:58:57 UTC ---
The DSE opportunity doesn't arise in ia32 since the struct is returned through
stack. Is the following patch restricting the test to x86_64 ok? (I have tested
that it works correctly on x86_64, but don't know how to test it gets excluded
on other platforms)


===================================================================
--- gcc/testsuite/gcc.dg/pr44194-1.c    (revision 175063)
+++ gcc/testsuite/gcc.dg/pr44194-1.c    (working copy)
@@ -1,4 +1,4 @@
-/* { dg-do compile } */
+/* { dg-do compile { target x86_64-*-* } } */
 /* { dg-options "-O2 -fdump-rtl-dse1" } */
 #include <stdint.h>

[Bug rtl-optimization/49414] gcc.dg/pr44194-1.c fails

[ebotcazou at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49414

--- Comment #3 from Eric Botcazou <ebotcazou at gcc dot gnu.org> 2011-06-15 16:59:54 UTC ---
It seems to me that the test should just be skipped for targets that always
return structures in memory, i.e. most 32-bit targets.

[Bug rtl-optimization/49414] gcc.dg/pr44194-1.c fails

[ebotcazou at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49414

--- Comment #4 from Eric Botcazou <ebotcazou at gcc dot gnu.org> 2011-06-15 17:03:31 UTC ---
> The DSE opportunity doesn't arise in ia32 since the struct is returned through
> stack. Is the following patch restricting the test to x86_64 ok? (I have tested
> that it works correctly on x86_64, but don't know how to test it gets excluded
> on other platforms)

x86-64 is too restrictive, the test should pass on SPARC64 as well.  I'd
suggest

/* { dg-require-effective-target lp64 } */

with a comment saying that this is an approximation.  Preapproved if it works.

[Bug rtl-optimization/49414] gcc.dg/pr44194-1.c fails

[eraman at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49414

--- Comment #5 from eraman at gcc dot gnu.org 2011-06-15 17:20:25 UTC ---
Author: eraman
Date: Wed Jun 15 17:20:20 2011
New Revision: 175082

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=175082
Log:
2011-06-15  Easwaran Raman  <eraman@google.com>

    PR rtl-optimization/49414
    * gcc.dg/pr44194-1.c: Restrict test to 64-bit targets.



Modified:
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/gcc.dg/pr44194-1.c

[Bug rtl-optimization/49414] gcc.dg/pr44194-1.c fails

[dominiq at lps dot ens.fr]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49414

--- Comment #6 from Dominique d'Humieres <dominiq at lps dot ens.fr> 2011-06-15 17:57:06 UTC ---
For the record, it also fails on powerpc-apple-darwin9.8.0 (see
http://gcc.gnu.org/ml/gcc-testresults/2011-06/msg01771.html ). Could it also be
the cause of new failures in gfortran

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

?

[Bug rtl-optimization/49414] gcc.dg/pr44194-1.c fails

[sje at cup dot hp.com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49414

Steve Ellcey <sje at cup dot hp.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |sje at cup dot hp.com

--- Comment #7 from Steve Ellcey <sje at cup dot hp.com> 2011-06-15 21:23:51 UTC ---
I am also seeing some new failures on IA64 HP-UX (maybe Linux too, I am not
sure because my Linux run had other problems).  I see the same Fortran failures
that Dominique sees.

I also get a failure with gcc.dg/struct-by-value-1.c and I definitively tracked
that failure down to r175063.  I haven't verified that the Fortran failures
started with this exact version.

Should these bugs (mine and Dominiques) be a separate bug report?  They look
different then the IA32 failure.

[Bug rtl-optimization/49414] gcc.dg/pr44194-1.c fails

[ebotcazou at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49414

Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:

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

--- Comment #8 from Eric Botcazou <ebotcazou at gcc dot gnu.org> 2011-06-15 21:42:16 UTC ---
Yes, please open a PR for the new execution failures and make it depend on the
original PR rtl-optimization/44194.  This one is fixed.