[Bug target/53156] New: [4.8 Regression]: gcc.target/cris/peep2-andu2.c

[Bug target/53156] New: [4.8 Regression]: gcc.target/cris/peep2-andu2.c

[hp at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53156

             Bug #: 53156
           Summary: [4.8 Regression]: gcc.target/cris/peep2-andu2.c
    Classification: Unclassified
           Product: gcc
           Version: 4.8.0
            Status: UNCONFIRMED
          Keywords: missed-optimization
          Severity: normal
          Priority: P3
         Component: target
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: hp@gcc.gnu.org
              Host: x86_64-unknown-linux-gnu
            Target: cris-axis-elf


This test previously passed, now it fails as follows.
The observed regression was exposed by a commit in the range (before:after)
186859:186871, most likely the reload-commit in r186861.

The fault is with the test-case: it has an assumption that a set of specific
insn sequences is generated implying that those are the only minimal sequences,
an assumption proven wrong.  For one sequence change, there's a minor
regression.

Running /tmp/hpautotest-gcc1/gcc/gcc/testsuite/gcc.target/cris/cris.exp ...
FAIL: gcc.target/cris/peep2-andu2.c scan-assembler movu.w \\$r10,\\$
FAIL: gcc.target/cris/peep2-andu2.c scan-assembler and.w 2047,\\$
FAIL: gcc.target/cris/peep2-andu2.c scan-assembler movu.b \\$r10,\\$
FAIL: gcc.target/cris/peep2-andu2.c scan-assembler and.b 95,\\$
FAIL: gcc.target/cris/peep2-andu2.c scan-assembler andq -2,\\$

[Bug target/53156] [4.8 Regression]: gcc.target/cris/peep2-andu2.c

[hp at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53156

Hans-Peter Nilsson <hp at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |ASSIGNED
   Last reconfirmed|                            |2012-04-29
         AssignedTo|unassigned at gcc dot       |hp at gcc dot gnu.org
                   |gnu.org                     |
     Ever Confirmed|0                           |1

[Bug target/53156] [4.8 Regression]: gcc.target/cris/peep2-andu2.c

[hp at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53156

--- Comment #1 from Hans-Peter Nilsson <hp at gcc dot gnu.org> 2012-04-29 06:59:14 UTC ---
Author: hp
Date: Sun Apr 29 06:59:09 2012
New Revision: 186940

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=186940
Log:
    PR target/53156
    * config/cris/cris.md (andqu): New peephole2.
    (andu): Tweak head comment.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/cris/cris.md

[Bug target/53156] [4.8 Regression]: gcc.target/cris/peep2-andu2.c

[hp at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53156

--- Comment #2 from Hans-Peter Nilsson <hp at gcc dot gnu.org> 2012-04-29 07:00:16 UTC ---
Author: hp
Date: Sun Apr 29 07:00:01 2012
New Revision: 186941

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=186941
Log:
    PR target/53156
    * gcc.target/cris/peep2-andu2.c: Tweak expected assembly
    code to match current output and cover new peephole2 pattern.

Modified:
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/gcc.target/cris/peep2-andu2.c

[Bug target/53156] [4.8 Regression]: gcc.target/cris/peep2-andu2.c

[hp at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53156

Hans-Peter Nilsson <hp at gcc dot gnu.org> changed:

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

--- Comment #3 from Hans-Peter Nilsson <hp at gcc dot gnu.org> 2012-04-29 07:06:00 UTC ---
fixed.