[Bug rtl-optimization/17752] New: Hot/cold basic block partitioning optimization has problems

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* [Bug rtl-optimization/17752] New: Hot/cold basic block partitioning optimization has problems
@ 2004-09-30 17:31 ctice at apple dot com
  2004-09-30 17:35 ` [Bug rtl-optimization/17752] " ctice at apple dot com
                   ` (6 more replies)
  0 siblings, 7 replies; 8+ messages in thread
From: ctice at apple dot com @ 2004-09-30 17:31 UTC (permalink / raw)
  To: gcc-bugs

- This optimization scans forward in the instruction stream (2-3 instructions for each basic block),
    which is inefficient
- This optimization does not work properly with dwarf2 debug information  (the assembler     
    complains about attempting subtraction between labels in different sections).

-- 
           Summary: Hot/cold basic block partitioning optimization has
                    problems
           Product: gcc
           Version: 4.0.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: rtl-optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: ctice at apple dot com
                CC: gcc-bugs at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17752


^ permalink raw reply	[flat|nested] 8+ messages in thread

* [Bug rtl-optimization/17752] Hot/cold basic block partitioning optimization has problems
  2004-09-30 17:31 [Bug rtl-optimization/17752] New: Hot/cold basic block partitioning optimization has problems ctice at apple dot com
@ 2004-09-30 17:35 ` ctice at apple dot com
  2004-09-30 17:42 ` pinskia at gcc dot gnu dot org
                   ` (5 subsequent siblings)
  6 siblings, 0 replies; 8+ messages in thread
From: ctice at apple dot com @ 2004-09-30 17:35 UTC (permalink / raw)
  To: gcc-bugs


------- Additional Comments From ctice at apple dot com  2004-09-30 17:35 -------
The following patches to fix these bugs have been submitted to gcc-patches:

http://gcc.gnu.org/ml/gcc-patches/2004-08/msg02673.html
http://gcc.gnu.org/ml/gcc-patches/2004-09/msg01714.html
http://gcc.gnu.org/ml/gcc-patches/2004-09/msg02894.html

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |patch


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17752


^ permalink raw reply	[flat|nested] 8+ messages in thread

* [Bug rtl-optimization/17752] Hot/cold basic block partitioning optimization has problems
  2004-09-30 17:31 [Bug rtl-optimization/17752] New: Hot/cold basic block partitioning optimization has problems ctice at apple dot com
  2004-09-30 17:35 ` [Bug rtl-optimization/17752] " ctice at apple dot com
@ 2004-09-30 17:42 ` pinskia at gcc dot gnu dot org
  2004-10-18  4:21 ` pinskia at gcc dot gnu dot org
                   ` (4 subsequent siblings)
  6 siblings, 0 replies; 8+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2004-09-30 17:42 UTC (permalink / raw)
  To: gcc-bugs


------- Additional Comments From pinskia at gcc dot gnu dot org  2004-09-30 17:42 -------
Confirmed, hopefully someone will review these soon.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|                            |1
           Keywords|                            |compile-time-hog, wrong-code
   Last reconfirmed|0000-00-00 00:00:00         |2004-09-30 17:42:47
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17752


^ permalink raw reply	[flat|nested] 8+ messages in thread

* [Bug rtl-optimization/17752] Hot/cold basic block partitioning optimization has problems
  2004-09-30 17:31 [Bug rtl-optimization/17752] New: Hot/cold basic block partitioning optimization has problems ctice at apple dot com
  2004-09-30 17:35 ` [Bug rtl-optimization/17752] " ctice at apple dot com
  2004-09-30 17:42 ` pinskia at gcc dot gnu dot org
@ 2004-10-18  4:21 ` pinskia at gcc dot gnu dot org
  2004-10-18 16:06 ` ctice at apple dot com
                   ` (3 subsequent siblings)
  6 siblings, 0 replies; 8+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2004-10-18  4:21 UTC (permalink / raw)
  To: gcc-bugs


------- Additional Comments From pinskia at gcc dot gnu dot org  2004-10-18 04:21 -------
I pinged them, hopefully someone will look into them soon :).

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |4.0.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17752


^ permalink raw reply	[flat|nested] 8+ messages in thread

* [Bug rtl-optimization/17752] Hot/cold basic block partitioning optimization has problems
  2004-09-30 17:31 [Bug rtl-optimization/17752] New: Hot/cold basic block partitioning optimization has problems ctice at apple dot com
                   ` (2 preceding siblings ...)
  2004-10-18  4:21 ` pinskia at gcc dot gnu dot org
@ 2004-10-18 16:06 ` ctice at apple dot com
  2004-12-05  5:30 ` pinskia at gcc dot gnu dot org
                   ` (2 subsequent siblings)
  6 siblings, 0 replies; 8+ messages in thread
From: ctice at apple dot com @ 2004-10-18 16:06 UTC (permalink / raw)
  To: gcc-bugs


------- Additional Comments From ctice at apple dot com  2004-10-18 16:06 -------
Subject: Re:  Hot/cold basic block partitioning optimization has problems


Actually, I had some private communication with Zack Weinberg, Mark  
Mitchell, and Richard
Henderson about the hot/cold patches.  The decision was that these are  
too intrusive to go
into stage 3, so I created a branch ('hot-cold-branch') to hold onto  
the patches until
stage 1 opens up again.

Thanks for  pursuing this Andrew.

--  Caroline Tice
ctice@apple.com

On Oct 17, 2004, at 9:21 PM, pinskia at gcc dot gnu dot org wrote:

>
> ------- Additional Comments From pinskia at gcc dot gnu dot org   
> 2004-10-18 04:21 -------
> I pinged them, hopefully someone will look into them soon :).
>
> --  
>            What    |Removed                     |Added
> ----------------------------------------------------------------------- 
> -----
>    Target Milestone|---                         |4.0.0
>
>
> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17752
>
> ------- You are receiving this mail because: -------
> You reported the bug, or are watching the reporter.



-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17752


^ permalink raw reply	[flat|nested] 8+ messages in thread

* [Bug rtl-optimization/17752] Hot/cold basic block partitioning optimization has problems
  2004-09-30 17:31 [Bug rtl-optimization/17752] New: Hot/cold basic block partitioning optimization has problems ctice at apple dot com
                   ` (3 preceding siblings ...)
  2004-10-18 16:06 ` ctice at apple dot com
@ 2004-12-05  5:30 ` pinskia at gcc dot gnu dot org
  2005-03-06 15:37 ` pinskia at gcc dot gnu dot org
  2005-06-12  3:29 ` pinskia at gcc dot gnu dot org
  6 siblings, 0 replies; 8+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2004-12-05  5:30 UTC (permalink / raw)
  To: gcc-bugs



-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|4.0.0                       |---


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17752


^ permalink raw reply	[flat|nested] 8+ messages in thread

* [Bug rtl-optimization/17752] Hot/cold basic block partitioning optimization has problems
  2004-09-30 17:31 [Bug rtl-optimization/17752] New: Hot/cold basic block partitioning optimization has problems ctice at apple dot com
                   ` (4 preceding siblings ...)
  2004-12-05  5:30 ` pinskia at gcc dot gnu dot org
@ 2005-03-06 15:37 ` pinskia at gcc dot gnu dot org
  2005-06-12  3:29 ` pinskia at gcc dot gnu dot org
  6 siblings, 0 replies; 8+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2005-03-06 15:37 UTC (permalink / raw)
  To: gcc-bugs



-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
   Last reconfirmed|2004-09-30 17:42:47         |2005-03-06 15:37:17
               date|                            |
   Target Milestone|---                         |4.1.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17752


^ permalink raw reply	[flat|nested] 8+ messages in thread

* [Bug rtl-optimization/17752] Hot/cold basic block partitioning optimization has problems
  2004-09-30 17:31 [Bug rtl-optimization/17752] New: Hot/cold basic block partitioning optimization has problems ctice at apple dot com
                   ` (5 preceding siblings ...)
  2005-03-06 15:37 ` pinskia at gcc dot gnu dot org
@ 2005-06-12  3:29 ` pinskia at gcc dot gnu dot org
  6 siblings, 0 replies; 8+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2005-06-12  3:29 UTC (permalink / raw)
  To: gcc-bugs


------- Additional Comments From pinskia at gcc dot gnu dot org  2005-06-12 03:29 -------
All of these three issues have now been fixed.  Closing as fixed.

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


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17752


^ permalink raw reply	[flat|nested] 8+ messages in thread

end of thread, other threads:[~2005-06-12  3:29 UTC | newest]

Thread overview: 8+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2004-09-30 17:31 [Bug rtl-optimization/17752] New: Hot/cold basic block partitioning optimization has problems ctice at apple dot com
2004-09-30 17:35 ` [Bug rtl-optimization/17752] " ctice at apple dot com
2004-09-30 17:42 ` pinskia at gcc dot gnu dot org
2004-10-18  4:21 ` pinskia at gcc dot gnu dot org
2004-10-18 16:06 ` ctice at apple dot com
2004-12-05  5:30 ` pinskia at gcc dot gnu dot org
2005-03-06 15:37 ` pinskia at gcc dot gnu dot org
2005-06-12  3:29 ` pinskia at gcc dot gnu dot org

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