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* [Bug target/53038] New: cfi_restore for cr before cr is actually restored
@ 2012-04-19  7:21 amodra at gmail dot com
  2012-04-19  7:34 ` [Bug target/53038] " amodra at gmail dot com
                   ` (4 more replies)
  0 siblings, 5 replies; 6+ messages in thread
From: amodra at gmail dot com @ 2012-04-19  7:21 UTC (permalink / raw)
  To: gcc-bugs

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53038

             Bug #: 53038
           Summary: cfi_restore for cr before cr is actually restored
    Classification: Unclassified
           Product: gcc
           Version: 4.8.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: amodra@gmail.com


void s_c (void)
{
  char a[33];
  __asm __volatile ("#%0" : "=m" (a) : : "cr2");
}

compiled with -m32 -O2 -g gives this epilogue

        lwz 12,76(1)
        addi 1,1,80
        .cfi_restore 70
        .cfi_def_cfa_offset 0
        mtcrf 32,12
        blr


^ permalink raw reply	[flat|nested] 6+ messages in thread
* [Bug target/53038] cfi_restore for cr before cr is actually restored
  2012-04-19  7:21 [Bug target/53038] New: cfi_restore for cr before cr is actually restored amodra at gmail dot com
@ 2012-04-19  7:34 ` amodra at gmail dot com
  2012-04-19 15:34 ` amodra at gmail dot com
                   ` (3 subsequent siblings)
  4 siblings, 0 replies; 6+ messages in thread
From: amodra at gmail dot com @ 2012-04-19  7:34 UTC (permalink / raw)
  To: gcc-bugs

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53038

Alan Modra <amodra at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Target|                            |powerpc-linux
      Known to fail|                            |4.5.5, 4.6.4, 4.7.1, 4.8.0

--- Comment #1 from Alan Modra <amodra at gmail dot com> 2012-04-19 07:32:30 UTC ---
Earlier compilers without shrink-wrap on by default need
-fasynchronous-unwind-tables to get the epilogue cfi_restores.


^ permalink raw reply	[flat|nested] 6+ messages in thread
* [Bug target/53038] cfi_restore for cr before cr is actually restored
  2012-04-19  7:21 [Bug target/53038] New: cfi_restore for cr before cr is actually restored amodra at gmail dot com
  2012-04-19  7:34 ` [Bug target/53038] " amodra at gmail dot com
@ 2012-04-19 15:34 ` amodra at gmail dot com
  2012-04-19 15:35 ` amodra at gmail dot com
                   ` (2 subsequent siblings)
  4 siblings, 0 replies; 6+ messages in thread
From: amodra at gmail dot com @ 2012-04-19 15:34 UTC (permalink / raw)
  To: gcc-bugs

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53038

--- Comment #2 from Alan Modra <amodra at gmail dot com> 2012-04-19 15:27:47 UTC ---
testing a fix


^ permalink raw reply	[flat|nested] 6+ messages in thread
* [Bug target/53038] cfi_restore for cr before cr is actually restored
  2012-04-19  7:21 [Bug target/53038] New: cfi_restore for cr before cr is actually restored amodra at gmail dot com
  2012-04-19  7:34 ` [Bug target/53038] " amodra at gmail dot com
  2012-04-19 15:34 ` amodra at gmail dot com
@ 2012-04-19 15:35 ` amodra at gmail dot com
  2012-05-01  4:04 ` amodra at gcc dot gnu.org
  2013-02-06  3:05 ` amodra at gmail dot com
  4 siblings, 0 replies; 6+ messages in thread
From: amodra at gmail dot com @ 2012-04-19 15:35 UTC (permalink / raw)
  To: gcc-bugs

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53038

Alan Modra <amodra at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |ASSIGNED
   Last reconfirmed|                            |2012-04-19
         AssignedTo|unassigned at gcc dot       |amodra at gmail dot com
                   |gnu.org                     |
     Ever Confirmed|0                           |1


^ permalink raw reply	[flat|nested] 6+ messages in thread
* [Bug target/53038] cfi_restore for cr before cr is actually restored
  2012-04-19  7:21 [Bug target/53038] New: cfi_restore for cr before cr is actually restored amodra at gmail dot com
                   ` (2 preceding siblings ...)
  2012-04-19 15:35 ` amodra at gmail dot com
@ 2012-05-01  4:04 ` amodra at gcc dot gnu.org
  2013-02-06  3:05 ` amodra at gmail dot com
  4 siblings, 0 replies; 6+ messages in thread
From: amodra at gcc dot gnu.org @ 2012-05-01  4:04 UTC (permalink / raw)
  To: gcc-bugs

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53038

--- Comment #3 from Alan Modra <amodra at gcc dot gnu.org> 2012-05-01 04:03:25 UTC ---
Author: amodra
Date: Tue May  1 04:03:21 2012
New Revision: 187010

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=187010
Log:
    PR target/53038
    * config/rs6000/rs6000.c (load_lr_save, restore_saved_lr,
    load_cr_save, add_crlr_cfa_restore): New functions.
    (rs6000_restore_saved_cr): Rename to..
    (restore_saved_cr): ..this.  Add cfa_restore notes for cr.
    (rs6000_emit_epilogue): Use new functions.  Adjust condition
    for emitting lr and cr cfa_restore.  Emit cfa_restores for fp
    regs when using out-of-line restore only when shrink wrapping.


Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/rs6000/rs6000.c


^ permalink raw reply	[flat|nested] 6+ messages in thread
* [Bug target/53038] cfi_restore for cr before cr is actually restored
  2012-04-19  7:21 [Bug target/53038] New: cfi_restore for cr before cr is actually restored amodra at gmail dot com
                   ` (3 preceding siblings ...)
  2012-05-01  4:04 ` amodra at gcc dot gnu.org
@ 2013-02-06  3:05 ` amodra at gmail dot com
  4 siblings, 0 replies; 6+ messages in thread
From: amodra at gmail dot com @ 2013-02-06  3:05 UTC (permalink / raw)
  To: gcc-bugs


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53038

Alan Modra <amodra at gmail dot com> changed:

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

--- Comment #4 from Alan Modra <amodra at gmail dot com> 2013-02-06 03:04:58 UTC ---
Fixed mainline.  Not a regression so not applying to FSF branches.


^ permalink raw reply	[flat|nested] 6+ messages in thread
end of thread, other threads:[~2013-02-06  3:05 UTC | newest]

Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
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2012-04-19  7:21 [Bug target/53038] New: cfi_restore for cr before cr is actually restored amodra at gmail dot com
2012-04-19  7:34 ` [Bug target/53038] " amodra at gmail dot com
2012-04-19 15:34 ` amodra at gmail dot com
2012-04-19 15:35 ` amodra at gmail dot com
2012-05-01  4:04 ` amodra at gcc dot gnu.org
2013-02-06  3:05 ` amodra at gmail dot com

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