[Bug target/62284] New: AVR unable to find register to spill in the class POINTER_REGS

[Bug target/62284] New: AVR unable to find register to spill in the class POINTER_REGS

[joel at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62284

            Bug ID: 62284
           Summary: AVR unable to find register to spill in the class
                    POINTER_REGS
           Product: gcc
           Version: 4.8.3
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: joel at gcc dot gnu.org

avr-rtems4.11-gcc --pipe -DHAVE_CONFIG_H   -I..
-I../../cpukit/../../../avrtest/lib/include   -mmcu=atmega128 -Os -g -Wall
-Wmissing-prototypes -Wimplicit-function-declaration -Wstrict-prototypes
-Wnested-externs -MT src/bdpart-write.o -MD -MP -MF $depbase.Tpo -c -o
src/bdpart-write.o
../../../../../../rtems/c/src/../../cpukit/libblock/src/bdpart-write.c &&\
mv -f $depbase.Tpo $depbase.Po
depbase=`echo src/media-path.o | sed 's|[^/]*$|.deps/&|;s|\.o$||'`;\
avr-rtems4.11-gcc --pipe -DHAVE_CONFIG_H   -I..
-I../../cpukit/../../../avrtest/lib/include   -mmcu=atmega128 -Os -g -Wall
-Wmissing-prototypes -Wimplicit-function-declaration -Wstrict-prototypes
-Wnested-externs -MT src/media-path.o -MD -MP -MF $depbase.Tpo -c -o
src/media-path.o
../../../../../../rtems/c/src/../../cpukit/libblock/src/media-path.c &&\
mv -f $depbase.Tpo $depbase.Po
../../../../../../rtems/c/src/../../cpukit/libblock/src/flashdisk.c: In
function 'rtems_fdisk_recycle_segment':
../../../../../../rtems/c/src/../../cpukit/libblock/src/flashdisk.c:1402:1:
error: unable to find a register to spill in class 'POINTER_REGS'
 }
 ^
../../../../../../rtems/c/src/../../cpukit/libblock/src/flashdisk.c:1402:1:
error: this is the insn:
(insn 364 363 365 16 (set (reg:HI 26 r26)
        (reg/v/f:HI 67 [ dpd ]))
../../../../../../rtems/c/src/../../cpukit/libblock/src/flashdisk.c:1315 82
{*movhi}
     (nil))
../../../../../../rtems/c/src/../../cpukit/libblock/src/flashdisk.c:1402:
confused by earlier errors, bailing out

[Bug target/62284] AVR unable to find register to spill in the class POINTER_REGS

[joel at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62284

--- Comment #1 from Joel Sherrill <joel at gcc dot gnu.org> ---
Created attachment 33406
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=33406&action=edit
Preprocessed RTEMS flashdisk.c which triggers error

[Bug target/62284] AVR unable to find register to spill in the class POINTER_REGS

[joel at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62284

Joel Sherrill <joel at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
      Known to fail|                            |4.8.3

--- Comment #2 from Joel Sherrill <joel at gcc dot gnu.org> ---
Fails at -O1, -O2, and -Os. Builds at -O0.

avr-rtems4.11-gcc -mmcu=atmega128 -Os -c pr62284.c

[Bug other/62284] [4.8 Regression] AVR unable to find register to spill in the class POINTER_REGS

[gjl at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62284

Georg-Johann Lay <gjl at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Target|                            |avr
             Status|UNCONFIRMED                 |NEW
      Known to work|                            |4.9.2
           Keywords|                            |ice-on-valid-code, ra
   Last reconfirmed|                            |2014-10-23
          Component|target                      |other
                 CC|                            |gjl at gcc dot gnu.org
             Blocks|                            |56183
     Ever confirmed|0                           |1
            Summary|AVR unable to find register |[4.8 Regression] AVR unable
                   |to spill in the class       |to find register to spill
                   |POINTER_REGS                |in the class POINTER_REGS

--- Comment #3 from Georg-Johann Lay <gjl at gcc dot gnu.org> ---
confirmed for 4.8

[Bug other/62284] [4.8 Regression] AVR unable to find register to spill in the class POINTER_REGS

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62284

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |4.8.4

[Bug other/62284] [4.8 Regression] AVR unable to find register to spill in the class POINTER_REGS

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62284

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Priority|P3                          |P4

[Bug other/62284] [4.8 Regression] AVR unable to find register to spill in the class POINTER_REGS

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62284

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|4.8.4                       |4.8.5

--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 4.8.4 has been released.

[Bug other/62284] [4.8 Regression] AVR unable to find register to spill in the class POINTER_REGS

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62284

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED
   Target Milestone|4.8.5                       |4.9.2
      Known to fail|                            |4.8.5

--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed for 4.9.2.