[Bug tree-optimization/44178] New: -fcompare-debug failure with -O1 -fgcse -fsched-pressure -funroll-loops -fschedule-insns

[Bug tree-optimization/44178] New: -fcompare-debug failure with -O1 -fgcse -fsched-pressure -funroll-loops -fschedule-insns

[zsojka at seznam dot cz]

Compiler flags:
$ g++ -O1 -fsched-pressure -funroll-loops -fschedule-insns -fcompare-debug
testcase.C

Tested revisions:
r159305 - fail
r159045 - fail
r158095 - fail
r153685 - OK


-- 
           Summary: -fcompare-debug failure with -O1 -fgcse -fsched-pressure
                    -funroll-loops -fschedule-insns
           Product: gcc
           Version: 4.6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: zsojka at seznam dot cz
  GCC host triplet: x86_64-pc-linux-gnu
GCC target triplet: x86_64-pc-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44178

[Bug tree-optimization/44178] -fcompare-debug failure with -O1 -fgcse -fsched-pressure -funroll-loops -fschedule-insns

[zsojka at seznam dot cz]

------- Comment #1 from zsojka at seznam dot cz  2010-05-17 21:47 -------
Created an attachment (id=20689)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=20689&action=view)
reduced testcase

$ /mnt/svn/gcc-trunk/binary-159305-lto-fortran/bin/g++ -O1 -fgcse
-fsched-pressure -funroll-loops -fschedule-insns -fcompare-debug pr44178.C
g++: pr44178.C: -fcompare-debug failure


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44178

[Bug debug/44178] -fcompare-debug failure with -O1 -fgcse -fsched-pressure -funroll-loops -fschedule-insns

[jakub at gcc dot gnu dot org]

------- Comment #2 from jakub at gcc dot gnu dot org  2010-05-19 13:53 -------
Created an attachment (id=20700)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=20700&action=view)
gcc46-pr44178.patch

Untested fix.


-- 

jakub at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         AssignedTo|unassigned at gcc dot gnu   |jakub at gcc dot gnu dot org
                   |dot org                     |
             Status|UNCONFIRMED                 |ASSIGNED


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44178

[Bug debug/44178] -fcompare-debug failure with -O1 -fgcse -fsched-pressure -funroll-loops -fschedule-insns

[jakub at gcc dot gnu dot org]

------- Comment #3 from jakub at gcc dot gnu dot org  2010-05-20 16:35 -------
Subject: Bug 44178

Author: jakub
Date: Thu May 20 16:34:43 2010
New Revision: 159632

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=159632
Log:
        PR debug/44178
        * haifa-sched.c (initiate_bb_reg_pressure_info): Do not call
        setup_ref_regs for DEBUG_INSNs.

        * g++.dg/debug/pr44178.C: New test.

Added:
    trunk/gcc/testsuite/g++.dg/debug/pr44178.C
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/haifa-sched.c
    trunk/gcc/testsuite/ChangeLog


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44178

[Bug debug/44178] -fcompare-debug failure with -O1 -fgcse -fsched-pressure -funroll-loops -fschedule-insns

[jakub at gcc dot gnu dot org]

------- Comment #4 from jakub at gcc dot gnu dot org  2010-05-20 16:59 -------
Subject: Bug 44178

Author: jakub
Date: Thu May 20 16:58:52 2010
New Revision: 159634

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=159634
Log:
        PR debug/44178
        * haifa-sched.c (initiate_bb_reg_pressure_info): Do not call
        setup_ref_regs for DEBUG_INSNs.

        * g++.dg/debug/pr44178.C: New test.

Added:
    branches/gcc-4_5-branch/gcc/testsuite/g++.dg/debug/pr44178.C
Modified:
    branches/gcc-4_5-branch/gcc/ChangeLog
    branches/gcc-4_5-branch/gcc/haifa-sched.c
    branches/gcc-4_5-branch/gcc/testsuite/ChangeLog


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44178

[Bug debug/44178] -fcompare-debug failure with -O1 -fgcse -fsched-pressure -funroll-loops -fschedule-insns

[jakub at gcc dot gnu dot org]

------- Comment #5 from jakub at gcc dot gnu dot org  2010-05-20 17:01 -------
Fixed.


-- 

jakub at gcc dot gnu dot org changed:

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


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44178

[Bug debug/44178] -fcompare-debug failure with -O1 -fgcse -fsched-pressure -funroll-loops -fschedule-insns

[ebotcazou at gcc dot gnu dot org]

------- Comment #6 from ebotcazou at gcc dot gnu dot org  2010-06-05 15:34 -------
The testcase doesn't pass on 4.5 branch with RTL checking:

/home/eric/gnat/gnat6_45/src/gcc/testsuite/g++.dg/debug/pr44178.C:39:1:
internal compiler error: RTL check: expected elt 3 type 'B', have '0' (rtx
barrier) in setup_insn_max_reg_pressure, at haifa-sched.c:1589
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
compiler exited with status 1


-- 

ebotcazou at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |ebotcazou at gcc dot gnu dot
                   |                            |org
             Status|RESOLVED                    |UNCONFIRMED
         Resolution|FIXED                       |
   Target Milestone|---                         |4.5.1


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44178

[Bug debug/44178] -fcompare-debug failure with -O1 -fgcse -fsched-pressure -funroll-loops -fschedule-insns

[jakub at gcc dot gnu dot org]

------- Comment #7 from jakub at gcc dot gnu dot org  2010-06-05 18:32 -------
That's because of PR43332, which has been fixed just on the trunk, not on 4.5
branch.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44178

[Bug debug/44178] -fcompare-debug failure with -O1 -fgcse -fsched-pressure -funroll-loops -fschedule-insns

[ebotcazou at gcc dot gnu dot org]

------- Comment #8 from ebotcazou at gcc dot gnu dot org  2010-06-27 08:32 -------
Fully fixed.


-- 

ebotcazou at gcc dot gnu dot org changed:

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


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44178