[Bug target/26560] New: mips: unable to find a register to spill in class 'FP_REGS'

[Bug target/26560] New: mips: unable to find a register to spill in class 'FP_REGS'

[debian-gcc at lists dot debian dot org]

[forwarded from http://bugs.debian.org/354439]

gcc version 4.0.3 20060212 (prerelease) (Debian 4.0.2-9)

falk@bigsur:~/delta/bin% gcc -c interface.i 
falk@bigsur:~/delta/bin% gcc -c interface.i -O
interface.i: In function 'intPickerButtons':
interface.i:44: error: unable to find a register to spill in class 'FP_REGS'
interface.i:44: error: this is the insn:
(insn 152 151 153 1 (parallel [
            (set (subreg:SI (reg:HI 261) 0)
                (fix:SI (reg:SF 32 $f0 [260])))
            (clobber (scratch:SF))
        ]) 167 {fix_truncsfsi2_macro} (insn_list:REG_DEP_TRUE 150 (nil))
    (expr_list:REG_UNUSED (scratch:SF)
        (expr_list:REG_UNUSED (scratch:SF)
            (expr_list:REG_DEAD (reg:SF 32 $f0 [260])
                (nil)))))
interface.i:44: confused by earlier errors, bailing out

I'll attach the original test case and a somewhat trimmed one, that doesn't
trigger at -O2, though.


-- 
           Summary: mips: unable to find a register to spill in class
                    'FP_REGS'
           Product: gcc
           Version: 4.0.3
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: debian-gcc at lists dot debian dot org
 GCC build triplet: mips-linux-gnu
  GCC host triplet: mips-linux-gnu
GCC target triplet: mips-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26560

[Bug target/26560] mips: unable to find a register to spill in class 'FP_REGS'

[debian-gcc at lists dot debian dot org]

------- Comment #2 from debian-gcc at lists dot debian dot org  2006-03-04 18:32 -------
Created an attachment (id=10968)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=10968&action=view)
Reduced testcase


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26560

[Bug target/26560] mips: unable to find a register to spill in class 'FP_REGS'

[debian-gcc at lists dot debian dot org]

------- Comment #1 from debian-gcc at lists dot debian dot org  2006-03-04 18:32 -------
Created an attachment (id=10967)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=10967&action=view)
Testcase


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26560

[Bug target/26560] mips: unable to find a register to spill in class 'FP_REGS'

[tbm at cyrius dot com]

------- Comment #3 from tbm at cyrius dot com  2006-06-02 20:35 -------
4.1.1 20060511 is also affected, 4.2.0 20060508 works.


-- 

tbm at cyrius dot com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |tbm at cyrius dot com


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26560

[Bug target/26560] [4.0/4.1 regression] mips: unable to find a register to spill in class 'FP_REGS'

[tbm at gcc dot gnu dot org]

------- Comment #4 from tbm at gcc dot gnu dot org  2006-10-09 11:46 -------
Confirmed.  gcc 3.4 and 4.2 work, 4.0 and 4.1 fail.


-- 

tbm at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|0                           |1
      Known to fail|                            |4.0.2 4.1.0
      Known to work|                            |3.4.6 4.2.0
   Last reconfirmed|0000-00-00 00:00:00         |2006-10-09 11:46:07
               date|                            |
            Summary|mips: unable to find a      |[4.0/4.1 regression] mips:
                   |register to spill in class  |unable to find a register to
                   |'FP_REGS'                   |spill in class 'FP_REGS'


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26560

[Bug target/26560] [4.0/4.1 regression] mips: unable to find a register to spill in class 'FP_REGS'

[pinskia at gcc dot gnu dot org]

-- 

pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |4.0.4


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26560

[Bug target/26560] [4.0/4.1 regression] mips: unable to find a register to spill in class 'FP_REGS'

[mmitchel at gcc dot gnu dot org]

-- 

mmitchel at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Priority|P3                          |P1


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26560

[Bug target/26560] [4.0/4.1 regression] mips: unable to find a register to spill in class 'FP_REGS'

[gdr at gcc dot gnu dot org]

------- Comment #5 from gdr at gcc dot gnu dot org  2007-02-03 16:20 -------
Fixed in GCC-4.2.0


-- 

gdr at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |FIXED
   Target Milestone|4.0.4                       |4.2.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26560

[Bug target/26560] [4.0/4.1 regression] mips: unable to find a register to spill in class 'FP_REGS'

[joseph at codesourcery dot com]

------- Comment #6 from joseph at codesourcery dot com  2007-02-03 16:24 -------
Subject: Re:  [4.0/4.1 regression] mips: unable to find a
 register to spill in class 'FP_REGS'

On Sat, 3 Feb 2007, gdr at gcc dot gnu dot org wrote:

> Fixed in GCC-4.2.0

>            What    |Removed                     |Added
> ----------------------------------------------------------------------------
>              Status|NEW                         |RESOLVED
>          Resolution|                            |FIXED
>    Target Milestone|4.0.4                       |4.2.0

On what basis are you declaring that a fix for this will never be 
appropriate for the 4.1.x release series - why did you close this bug?


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26560

[Bug target/26560] [4.0/4.1 regression] mips: unable to find a register to spill in class 'FP_REGS'

[gdr at cs dot tamu dot edu]

------- Comment #7 from gdr at cs dot tamu dot edu  2007-02-03 16:31 -------
Subject: Re:  [4.0/4.1 regression] mips: unable to find a register to spill in
class 'FP_REGS'

"joseph at codesourcery dot com" <gcc-bugzilla@gcc.gnu.org> writes:

| >            What    |Removed                     |Added
| >
----------------------------------------------------------------------------
| >              Status|NEW                         |RESOLVED
| >          Resolution|                            |FIXED
| >    Target Milestone|4.0.4                       |4.2.0
| 
| On what basis are you declaring that a fix for this will never be 
| appropriate for the 4.1.x release series - why did you close this bug?

Please, it you think you can have it fixed in GCC-4.1.x, just change
the milestone and fix it there.  I'm just triaging nearly 200 bugs
targets at 4.0.x and I may very well make a mistake.  Your contructive
help is most appreciated.

-- Gaby


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26560

[Bug target/26560] [4.1 regression] mips: unable to find a register to spill in class 'FP_REGS'

[tbm at gcc dot gnu dot org]

------- Comment #8 from tbm at gcc dot gnu dot org  2007-02-03 17:11 -------
I just verified that this is still there in 4.1 so I'm reopening the bug.
I know that no progress has been made but it _is_ still a bug in 4.1, which
unlike 4.0 is still supported.


-- 

tbm at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |VERIFIED
            Summary|[4.0/4.1 regression] mips:  |[4.1 regression] mips:
                   |unable to find a register to|unable to find a register to
                   |spill in class 'FP_REGS'    |spill in class 'FP_REGS'
   Target Milestone|4.2.0                       |4.1.3


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26560

[Bug target/26560] [4.1 regression] mips: unable to find a register to spill in class 'FP_REGS'

[tbm at gcc dot gnu dot org]

------- Comment #9 from tbm at gcc dot gnu dot org  2007-02-03 17:12 -------
Reopen


-- 

tbm at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|VERIFIED                    |REOPENED
         Resolution|FIXED                       |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26560

[Bug target/26560] [4.1 regression] mips: unable to find a register to spill in class 'FP_REGS'

[tbm at gcc dot gnu dot org]

------- Comment #10 from tbm at gcc dot gnu dot org  2007-02-03 17:17 -------
Janis, do you think you could check what fixed this on the 4.2 branch?


-- 

tbm at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |janis at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26560

[Bug target/26560] [4.1 regression] mips: unable to find a register to spill in class 'FP_REGS'

[pinskia at gcc dot gnu dot org]

-- 

pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|4.1.3                       |4.1.2


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26560

[Bug target/26560] [4.1 regression] mips: unable to find a register to spill in class 'FP_REGS'

[mmitchel at gcc dot gnu dot org]

-- 

mmitchel at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|4.1.2                       |4.1.3


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26560

[Bug target/26560] [4.1 regression] mips: unable to find a register to spill in class 'FP_REGS'

[jsm28 at gcc dot gnu dot org]

------- Comment #11 from jsm28 at gcc dot gnu dot org  2008-07-04 15:17 -------
Closing 4.1 branch.


-- 

jsm28 at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|REOPENED                    |RESOLVED
      Known to fail|4.0.2 4.1.0                 |4.0.2 4.1.0 4.1.3
         Resolution|                            |FIXED
   Target Milestone|4.1.3                       |4.2.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26560