[Bug target/52775] New: Change default for using FCFID instruction

[Bug target/52775] New: Change default for using FCFID instruction

[meissner at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52775

             Bug #: 52775
           Summary: Change default for using FCFID instruction
    Classification: Unclassified
           Product: gcc
           Version: 4.8.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
        AssignedTo: meissner@gcc.gnu.org
        ReportedBy: meissner@gcc.gnu.org
              Host: powerpc64-linux power-linux
            Target: powerpc64-linux
             Build: powerpc64-linux


Back in August 2010, when I updated the floating point conversion support for
powerpc, I made the default for using the FCFID instruction to be any of: -m64,
-mpopcntb (power5), -mcmpb (power6), -mpopcntd (power7), -mvsx.  Evidently any
powerpc that can support 64-bit (even if the current target is 32-bit) has the
FCFID instruction.  So I would like to modify the trunk and active branches to
enable FCFID in 32-bit mode on power4.

[Bug target/52775] Change default for using FCFID instruction

[meissner at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52775

--- Comment #1 from Michael Meissner <meissner at gcc dot gnu.org> 2012-04-12 17:10:38 UTC ---
Author: meissner
Date: Thu Apr 12 17:10:27 2012
New Revision: 186387

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=186387
Log:
[gcc]
2012-04-11  Michael Meissner  <meissner@linux.vnet.ibm.com>

    PR target/52775
    * config/rs6000/rs6000.h (TARGET_FCFID): Add TARGET_PPC_GPOPT to
    the list of options to enable the FCFID instruction.
    (TARGET_EXTRA_BUILTINS): Adjust comment.

[gcc/testsuite]
2012-04-11  Michael Meissner  <meissner@linux.vnet.ibm.com>

    PR target/52775
    * gcc.target/powerpc/pr52775.c: New file.



Added:
    trunk/gcc/testsuite/gcc.target/powerpc/pr52775.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/rs6000/rs6000.h
    trunk/gcc/testsuite/ChangeLog

[Bug target/52775] Change default for using FCFID instruction

[meissner at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52775

--- Comment #2 from Michael Meissner <meissner at gcc dot gnu.org> 2012-04-12 21:00:17 UTC ---
Author: meissner
Date: Thu Apr 12 21:00:07 2012
New Revision: 186392

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=186392
Log:
[gcc]
2012-04-12  Michael Meissner  <meissner@linux.vnet.ibm.com>

    Backport from mainline
    2012-04-12  Michael Meissner  <meissner@linux.vnet.ibm.com>

    PR target/52775
    * config/rs6000/rs6000.h (TARGET_FCFID): Add TARGET_PPC_GPOPT to
    the list of options to enable the FCFID instruction.
    (TARGET_EXTRA_BUILTINS): Adjust comment.

[gcc/testsuite]
012-04-12  Michael Meissner  <meissner@linux.vnet.ibm.com>

    Backport from mainline
    2012-04-12  Michael Meissner  <meissner@linux.vnet.ibm.com>

    PR target/52775
    * gcc.target/powerpc/pr52775.c: New file.


Added:
    branches/gcc-4_7-branch/gcc/testsuite/gcc.target/powerpc/pr52775.c
      - copied unchanged from r186389,
trunk/gcc/testsuite/gcc.target/powerpc/pr52775.c
Modified:
    branches/gcc-4_7-branch/gcc/ChangeLog
    branches/gcc-4_7-branch/gcc/config/rs6000/rs6000.h
    branches/gcc-4_7-branch/gcc/testsuite/ChangeLog

[Bug target/52775] Change default for using FCFID instruction

[meissner at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52775

--- Comment #3 from Michael Meissner <meissner at gcc dot gnu.org> 2012-04-13 21:55:24 UTC ---
Author: meissner
Date: Fri Apr 13 21:55:15 2012
New Revision: 186438

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=186438
Log:
[gcc]
2012-04-12  Michael Meissner  <meissner@linux.vnet.ibm.com>

    PR target/52775
    * config/rs6000/rs6000.h (TARGET_FCFID): Add TARGET_PPC_GPOPT to
    the list of options to enable the FCFID instruction.
    (TARGET_EXTRA_BUILTINS): Adjust comment.

[gcc/testsuite]
2012-04-12  Michael Meissner  <meissner@linux.vnet.ibm.com>

    PR target/52775
    * gcc.target/powerpc/pr52775.c: New file.



Added:
    branches/gcc-4_6-branch/gcc/testsuite/gcc.target/powerpc/pr52775.c
      - copied unchanged from r186389,
trunk/gcc/testsuite/gcc.target/powerpc/pr52775.c
Modified:
    branches/gcc-4_6-branch/gcc/ChangeLog
    branches/gcc-4_6-branch/gcc/config/rs6000/rs6000.h
    branches/gcc-4_6-branch/gcc/testsuite/ChangeLog

[Bug target/52775] Change default for using FCFID instruction

[meissner at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52775

Michael Meissner <meissner at gcc dot gnu.org> changed:

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

--- Comment #4 from Michael Meissner <meissner at gcc dot gnu.org> 2012-08-16 22:58:02 UTC ---
Fixed in April, 2012.