[Bug target/19636] New: Can't compile ethernut OS (avr-gcc)

[Bug target/19636] New: Can't compile ethernut OS (avr-gcc)

[dieterbmeier at yahoo dot com]

Hi, I'm testing gcc version 4.0.0 20050123:

avr-gcc -c  -Os  usart.i

usart.c: In function 'UsartIOCtl':
usart.c:821: error: unable to find a register to spill in class 
'BASE_POINTER_REGS'
usart.c:821: error: this is the insn:
(insn 653 159 160 14 (set (mem:HI (plus:HI (reg/f:HI 28 r28)
                (const_int 1 [0x1])) [32 S2 A8])
        (reg:HI 24 r24)) 12 {*movhi} (nil)
    (nil))
usart.c:821: internal compiler error: in spill_failure, at reload1.c:1872



Maybe, PR12017 is related to this PR?

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           Summary: Can't compile ethernut OS (avr-gcc)
           Product: gcc
           Version: 4.0.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: target
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: dieterbmeier at yahoo dot com
                CC: gcc-bugs at gcc dot gnu dot org
  GCC host triplet: i386
GCC target triplet: avr


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19636

[Bug target/19636] Can't compile ethernut OS (avr-gcc)

[dieterbmeier at yahoo dot com]

------- Additional Comments From dieterbmeier at yahoo dot com  2005-01-26 11:00 -------
Created an attachment (id=8073)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=8073&action=view)
usart.i


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19636

[Bug target/19636] Can't compile ethernut OS (avr-gcc)

[pinskia at gcc dot gnu dot org]

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           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |ice-on-valid-code


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19636

[Bug target/19636] Can't compile ethernut OS (avr-gcc)

[ericw at evcohs dot com]

------- Additional Comments From ericw at evcohs dot com  2005-02-10 18:59 -------
The testcase compiles successfully with avr-gcc on 3.3.2, and 3.4.3, using
-mmcu=atmega128.
Could someone with sufficient permissions please set the "Known To Work" field.

Dieter, could you confirm which device you're compiling for?

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           What    |Removed                     |Added
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                 CC|                            |ericw at evcohs dot com


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19636

[Bug target/19636] Can't compile ethernut OS (avr-gcc)

[ericw at evcohs dot com]

------- Additional Comments From ericw at evcohs dot com  2005-02-10 19:43 -------
Dieter, could you please try this out with a more recent snapshot?

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19636

[Bug target/19636] Can't compile ethernut OS (avr-gcc)

[dieterbmeier at yahoo dot com]

------- Additional Comments From dieterbmeier at yahoo dot com  2005-02-10 21:44 -------
It still fails with  4.0.0 20050209.
BTW, it only fails with -Os. (-O0 to -O3 are OK)
3_4 branch is OK, too.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
      Known to fail|                            |4.0.0
      Known to work|                            |3.3.2 3.4.3


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19636

[Bug target/19636] Can't compile ethernut OS (avr-gcc)

[ericw at evcohs dot com]

------- Additional Comments From ericw at evcohs dot com  2005-02-10 21:48 -------
Subject: Re:  Can't compile ethernut OS (avr-gcc)

dieterbmeier at yahoo dot com wrote:

>------- Additional Comments From dieterbmeier at yahoo dot com  2005-02-10 21:44 -------
>It still fails with  4.0.0 20050209.
>BTW, it only fails with -Os. (-O0 to -O3 are OK)
>3_4 branch is OK, too.
>
>  
>
Which device are you compiling for? (-mmcu=?)


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19636

[Bug target/19636] Can't compile ethernut OS (avr-gcc)

[dieterbmeier at yahoo dot com]

------- Additional Comments From dieterbmeier at yahoo dot com  2005-02-10 22:04 -------
>Which device are you compiling for? (-mmcu=?)

atmega128

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19636

[Bug target/19636] Can't compile ethernut OS (avr-gcc)

[andrewhutchinson at cox dot net]

------- Additional Comments From andrewhutchinson at cox dot net  2005-02-13 02:07 -------
Try patch attached to PR 18251. Good chance it will fix.
If not, pass me the source for a llok at.




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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19636

[Bug target/19636] Can't compile ethernut OS (avr-gcc)

[andrewhutchinson at cox dot net]

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                 CC|                            |andrewhutchinson at cox dot
                   |                            |net


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19636

[Bug target/19636] Can't compile ethernut OS (avr-gcc)

[berndtrog at yahoo dot com]

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           What    |Removed                     |Added
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                 CC|                            |berndtrog at yahoo dot com


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19636

[Bug target/19636] Can't compile ethernut OS (avr-gcc)

[dieterbmeier at yahoo dot com]

------- Additional Comments From dieterbmeier at yahoo dot com  2005-02-22 10:41 -------
>Try patch attached to PR 18251. Good chance it will fix.

I still fails. (18251.patch.bz2 applied)

>If not, pass me the source for a llok at.


Its already attached to this pr.

http://gcc.gnu.org/bugzilla/attachment.cgi?id=8073&action=view

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19636

[Bug target/19636] Can't compile ethernut OS (avr-gcc)

[berndtrog at yahoo dot com]

------- Additional Comments From berndtrog at yahoo dot com  2005-04-30 17:41 -------
I can confirm this bug for 4_0 and head (using -Os).

Note:
gcc-head-2004-12-07 compiles usart.i OK.
gcc-head-2004-12-29 fails with:

usart.c: In function 'UsartIOCtl':
usart.c:821: error: unable to find a register to spill in class 'BASE_POINTER_REGS'
usart.c:821: error: this is the insn:
(insn 653 159 160 14 (set (mem:HI (plus:HI (reg/f:HI 28 r28)
                (const_int 1 [0x1])) [32 S2 A8])
        (reg:HI 24 r24)) 12 {*movhi} (nil)
    (nil))
usart.c:821: internal compiler error: in spill_failure, at reload1.c:1873


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19636

[Bug target/19636] Can't compile ethernut OS (avr-gcc)

[ericw at evcohs dot com]

------- Additional Comments From ericw at evcohs dot com  2005-05-05 18:09 -------
Will someone with the requisite permissions please set this bug to NEW? This has
been confirmed.

Thanks
Eric

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19636

[Bug target/19636] Can't compile ethernut OS (avr-gcc)

[berndtrog at yahoo dot com]

------- Comment #11 from berndtrog at yahoo dot com  2005-12-05 18:34 -------
Compiling of usart.i still fails:

usart.c: In function 'UsartIOCtl':
usart.c:821: error: unable to find a register to spill in class
'BASE_POINTER_REGS'
usart.c:821: error: this is the insn:
(insn 663 162 163 14 (set (mem:HI (plus:HI (reg/f:HI 28 r28)
                (const_int 1 [0x1])) [31 S2 A8])
        (reg:HI 24 r24)) 12 {*movhi} (nil)
    (nil))
usart.c:821: confused by earlier errors, bailing out

Tested with: 4.0.3 20051123, 4.1.0 20051202, 4.2.0 20051202

It compiles OK with 3.4.5 


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19636

[Bug target/19636] Can't compile ethernut OS (avr-gcc)

[plessl at tik dot ee dot ethz dot ch]

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------- Comment #12 from plessl at tik dot ee dot ethz dot ch  2006-10-11 08:44 -------
I can confirm that this bug still exists on with avr-gcc (GCC) 4.0.2 (running
on Mac OS X 10.4.8/PPC, installed via Macports)

avr-gcc -Os ~/Documents/Downloads/usart.iusart.c: In function ‘UsartIOCtl’:
usart.c:821: error: unable to find a register to spill in class
‘BASE_POINTER_REGS’
usart.c:821: error: this is the insn:
(insn 663 162 163 14 (set (mem:HI (plus:HI (reg/f:HI 28 r28)
                (const_int 1 [0x1])) [31 S2 A8])
        (reg:HI 24 r24)) 12 {*movhi} (nil)
    (nil))
usart.c:821: confused by earlier errors, bailing out


Is there any news on this bug? 


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plessl at tik dot ee dot ethz dot ch changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |plessl at tik dot ee dot
                   |                            |ethz dot ch


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19636

[Bug target/19636] Can't compile ethernut OS (avr-gcc)

[eweddington at cso dot atmel dot com]

------- Comment #13 from eweddington at cso dot atmel dot com  2006-10-11 17:05 -------
(In reply to comment #12)
> I can confirm that this bug still exists on with avr-gcc (GCC) 4.0.2 (running
> on Mac OS X 10.4.8/PPC, installed via Macports)
<snip>
> Is there any news on this bug? 

Sorry, no. Your comment has been the latest news.

Can you try using GCC 4.1.1 and see if you can still reproduce this bug? That
would be very informative.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19636

[Bug target/19636] Can't compile ethernut OS (avr-gcc)

[plessl at tik dot ee dot ethz dot ch]

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------- Comment #14 from plessl at tik dot ee dot ethz dot ch  2006-10-17 14:43 -------
(In reply to comment #13)
> Can you try using GCC 4.1.1 and see if you can still reproduce this bug? That
> would be very informative.

Yes, the bug is still present in gcc-4.1.1, see below. I also had problems
building gcc-4.1.1 for avr. libssp doesn't compile for this target, hence I had
to disable it  by passing --disable-libssp to configure.

usart.c: In function ‘UsartIOCtl’:
usart.c:821: error: unable to find a register to spill in class
‘BASE_POINTER_REGS’
usart.c:821: error: this is the insn:
(insn 663 162 163 14 (set (mem/c:HI (plus:HI (reg/f:HI 28 r28)
                (const_int 1 [0x1])) [27 S2 A8])
        (reg:HI 24 r24)) 12 {*movhi} (nil)
    (nil))
usart.c:821: confused by earlier errors, bailing out


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19636

[Bug target/19636] Can't compile ethernut OS (avr-gcc)

[yuecelm at ee dot ethz dot ch]

------- Comment #15 from yuecelm at ee dot ethz dot ch  2006-10-27 10:31 -------
Found an important hint:

If the switch instruction is replaced with else ifs, the file is also
compilable with the -Os option. It seems that the avr-gcc >4.0 can only
optimize a limited number of cases (the file usart.i has 33 cases in one switch
statement).


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yuecelm at ee dot ethz dot ch changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |yuecelm at ee dot ethz dot
                   |                            |ch


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19636

[Bug target/19636] Can't compile ethernut OS (avr-gcc)

[eweddington at cso dot atmel dot com]

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eweddington at cso dot atmel dot com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|0                           |1
      Known to fail|4.0.0                       |4.0.0 4.0.2 4.1.1
   Last reconfirmed|0000-00-00 00:00:00         |2007-04-09 22:14:02
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19636

[Bug target/19636] Can't compile ethernut OS (avr-gcc)

[eweddington at cso dot atmel dot com]

------- Comment #16 from eweddington at cso dot atmel dot com  2007-05-21 17:03 -------
Fails with 4.1.2.


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eweddington at cso dot atmel dot com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
      Known to fail|4.0.0 4.0.2 4.1.1           |4.0.0 4.0.2 4.1.1 4.1.2


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19636