[Bug rtl-optimization/42535] unable to find a register to spill in class 'DREG'

[Bug rtl-optimization/42535] unable to find a register to spill in class 'DREG'

[debian-gcc at lists dot debian dot org]

------- Comment #1 from debian-gcc at lists dot debian dot org  2009-12-29 12:09 -------
Created an attachment (id=19410)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=19410&action=view)
preprocessed source


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42535

[Bug rtl-optimization/42535] New: unable to find a register to spill in class 'DREG'

[debian-gcc at lists dot debian dot org]

seen with current 4.3 and 4.4 branches, not with trunk. removing
-fschedule-insns lets the build succeed.

  Matthias



$ g++-4.4 -c -O1 -fsched-interblock -fsched-spec -fschedule-insns2
-fstrict-aliasing -fstrict-overflow -ftree-pre -ftree-vrp -fcaller-saves
-fcrossjumping -fcse-follow-jumps -fcse-skip-blocks
-fdelete-null-pointer-checks -fpeephole2 -fregmove -freorder-blocks
-freorder-functions -frerun-cse-after-loop -fexpensive-optimizations -fgcse
-fgcse-lm -foptimize-sibling-calls -fthread-jumps -falign-functions
-falign-jumps -falign-loops -falign-labels -finline-functions -funswitch-loops
-fpredictive-commoning -fgcse-after-reload -ftree-vectorize -fschedule-insns
DBmanager.ii 
In file included from
/usr/local/include/boost/interprocess/containers/container/vector.hpp:64,
                 from
/usr/local/include/boost/interprocess/containers/vector.hpp:20,
                 from shared_defs.h:36,
                 from DBmanager.h:9,
                 from DBmanager.cpp:10:
/usr/local/include/boost/interprocess/containers/container/detail/utilities.hpp:
In function 'SizeType
boost::interprocess_container::containers_detail::get_next_capacity(SizeType,
SizeType, SizeType) [with SizeType = long unsigned int]':
/usr/local/include/boost/interprocess/containers/container/detail/utilities.hpp:40:
error: unable to find a register to spill in class 'DREG'
/usr/local/include/boost/interprocess/containers/container/detail/utilities.hpp:40:
error: this is the insn:
(insn 9 67 4 2
/usr/local/include/boost/interprocess/containers/container/detail/utilities.hpp:31
(parallel [
            (set (reg/v:DI 2 cx [orig:58 m3 ] [58])
                (truncate:DI (lshiftrt:TI (mult:TI (zero_extend:TI (reg/v:DI 5
di [orig:62 max_size ] [62]))
                            (zero_extend:TI (reg:DI 2 cx [65])))
                        (const_int 64 [0x40]))))
            (clobber (scratch:DI))
            (clobber (reg:CC 17 flags))
        ]) 343 {*umuldi3_highpart_rex64} (expr_list:REG_DEAD (reg:DI 2 cx [65])
        (expr_list:REG_UNUSED (reg:CC 17 flags)
            (expr_list:REG_EQUAL (truncate:DI (lshiftrt:TI (mult:TI
(zero_extend:TI (reg/v:DI 5 di [orig:62 max_size ] [62]))
                            (const_double -6148914691236517205
[0xaaaaaaaaaaaaaaab] 0 [0x0] 0 [0x0] 0 [0x0]))
                        (const_int 64 [0x40])))
                (nil)))))
/usr/local/include/boost/interprocess/containers/container/detail/utilities.hpp:40:
confused by earlier errors, bailing out


-- 
           Summary: unable to find a register to spill in class 'DREG'
           Product: gcc
           Version: 4.5.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: rtl-optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: debian-gcc at lists dot debian dot org
GCC target triplet: x86_64-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42535

[Bug rtl-optimization/42535] unable to find a register to spill in class 'DREG'

[jakub at gcc dot gnu dot org]

------- Comment #2 from jakub at gcc dot gnu dot org  2009-12-29 12:17 -------
You shouldn't use -fschedule-insns on i?86/x86_64.  Vlad made some changes in
4.5 that make -fschedule-insns work in most cases on these arches, but in
4.3/4.4 you definitely shouldn't use them.


-- 

jakub at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|                            |INVALID


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42535