[Bug target/66474] New: Document the use of %x in powerpc asm statements

[Bug target/66474] New: Document the use of %x in powerpc asm statements

[meissner at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66474

            Bug ID: 66474
           Summary: Document the use of %x in powerpc asm statements
           Product: gcc
           Version: 5.1.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: meissner at gcc dot gnu.org
  Target Milestone: ---
              Host: powerpc64-unknown-linux-gnu
            Target: powerpc64-unknown-linux-gnu
             Build: powerpc64-unknown-linux-gnu

A user that was trying to use PowerPC VSX instructions reported that we never
documented that you need to use %x<n> in PowerPC asm statements if the register
could be a VSX register (as opposed to traditional FPR or Altivec register).

[Bug target/66474] Document the use of %x in powerpc asm statements

[meissner at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66474

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |ASSIGNED
   Last reconfirmed|                            |2015-06-09
                 CC|                            |bergner at gcc dot gnu.org,
                   |                            |dje at gcc dot gnu.org,
                   |                            |munroesj at us dot ibm.com
           Assignee|unassigned at gcc dot gnu.org      |meissner at gcc dot gnu.org
     Ever confirmed|0                           |1

[Bug target/66474] Document the use of %x in powerpc asm statements

[meissner at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66474

--- Comment #1 from Michael Meissner <meissner at gcc dot gnu.org> ---
Created attachment 35732
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=35732&action=edit
Proposed patch to fix the problem

[Bug target/66474] Document the use of %x in powerpc asm statements

[meissner at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66474

--- Comment #2 from Michael Meissner <meissner at gcc dot gnu.org> ---
Author: meissner
Date: Wed Jun 10 16:51:49 2015
New Revision: 224332

URL: https://gcc.gnu.org/viewcvs?rev=224332&root=gcc&view=rev
Log:
2015-06-10  Michael Meissner  <meissner@linux.vnet.ibm.com>

        PR target/66474
        * doc/md.texi (Machine Constraints): Document that on the PowerPC
        if you use a constraint that targets a VSX register, you must use
        %x<n> in the template.


Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/doc/md.texi

[Bug target/66474] Document the use of %x in powerpc asm statements

[meissner at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66474

--- Comment #3 from Michael Meissner <meissner at gcc dot gnu.org> ---
Author: meissner
Date: Wed Jun 10 17:15:25 2015
New Revision: 224333

URL: https://gcc.gnu.org/viewcvs?rev=224333&root=gcc&view=rev
Log:
2015-06-10  Michael Meissner  <meissner@linux.vnet.ibm.com>

        Backport from mainline:
        2015-06-10  Michael Meissner  <meissner@linux.vnet.ibm.com>

        PR target/66474
        * doc/md.texi (Machine Constraints): Document that on the PowerPC
        if you use a constraint that targets a VSX register, you must use
        %x<n> in the template.


Modified:
    branches/ibm/gcc-5-prefixes/gcc/doc/md.texi

[Bug target/66474] Document the use of %x in powerpc asm statements

[meissner at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66474

--- Comment #4 from Michael Meissner <meissner at gcc dot gnu.org> ---
Author: meissner
Date: Wed Jun 10 17:15:58 2015
New Revision: 224334

URL: https://gcc.gnu.org/viewcvs?rev=224334&root=gcc&view=rev
Log:
2015-06-10  Michael Meissner  <meissner@linux.vnet.ibm.com>

        Backport from mainline:
        2015-06-10  Michael Meissner  <meissner@linux.vnet.ibm.com>

        PR target/66474
        * doc/md.texi (Machine Constraints): Document that on the PowerPC
        if you use a constraint that targets a VSX register, you must use
        %x<n> in the template.


Modified:
    branches/gcc-5-branch/gcc/ChangeLog
    branches/gcc-5-branch/gcc/doc/md.texi

[Bug target/66474] Document the use of %x in powerpc asm statements

[meissner at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66474

--- Comment #5 from Michael Meissner <meissner at gcc dot gnu.org> ---
Author: meissner
Date: Wed Jun 10 17:16:58 2015
New Revision: 224335

URL: https://gcc.gnu.org/viewcvs?rev=224335&root=gcc&view=rev
Log:
2015-06-10  Michael Meissner  <meissner@linux.vnet.ibm.com>

        Backport from mainline:
        2015-06-10  Michael Meissner  <meissner@linux.vnet.ibm.com>

        PR target/66474
        * doc/md.texi (Machine Constraints): Document that on the PowerPC
        if you use a constraint that targets a VSX register, you must use
        %x<n> in the template.


Modified:
    branches/gcc-4_9-branch/gcc/ChangeLog
    branches/gcc-4_9-branch/gcc/doc/md.texi

[Bug target/66474] Document the use of %x in powerpc asm statements

[meissner at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66474

--- Comment #6 from Michael Meissner <meissner at gcc dot gnu.org> ---
Author: meissner
Date: Wed Jun 10 17:34:12 2015
New Revision: 224336

URL: https://gcc.gnu.org/viewcvs?rev=224336&root=gcc&view=rev
Log:
2015-06-10  Michael Meissner  <meissner@linux.vnet.ibm.com>

        Backport from mainline:
        2015-06-10  Michael Meissner  <meissner@linux.vnet.ibm.com>

        PR target/66474
        * doc/md.texi (Machine Constraints): Document that on the PowerPC
        if you use a constraint that targets a VSX register, you must use
        %x<n> in the template.


Modified:
    branches/gcc-4_8-branch/gcc/ChangeLog
    branches/gcc-4_8-branch/gcc/doc/md.texi