[Bug other/56517] New: ICE: in find_valid_class, at reload.c:704

[gjl at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56517

             Bug #: 56517
           Summary: ICE: in find_valid_class, at reload.c:704
    Classification: Unclassified
           Product: gcc
           Version: 4.8.0
            Status: UNCONFIRMED
          Keywords: ice-on-valid-code, ra
          Severity: normal
          Priority: P3
         Component: other
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: gjl@gcc.gnu.org
            Blocks: 56183
            Target: avr


This ICE occurs for gcc.c-torture/compile/pr55921.c from the GCC test suite:

/gnu/gcc.gnu.org/trunk/gcc/testsuite/gcc.c-torture/compile/pr55921.c: In
function 'foo':

/gnu/gcc.gnu.org/trunk/gcc/testsuite/gcc.c-torture/compile/pr55921.c:21:1:
internal compiler error: in find_valid_class, at reload.c:704

0x850ee60 find_valid_class

    ../../../gcc.gnu.org/trunk/gcc/reload.c:704

0x851339d push_reload(rtx_def*, rtx_def*, rtx_def**, rtx_def**, reg_class,
machine_mode, machine_mode, int, int, int, reload_type)

    ../../../gcc.gnu.org/trunk/gcc/reload.c:1152

0x8519705 find_reloads(rtx_def*, int, int, int, short*)

    ../../../gcc.gnu.org/trunk/gcc/reload.c:4099

0x8528544 calculate_needs_all_insns

    ../../../gcc.gnu.org/trunk/gcc/reload1.c:1520

0x8528544 reload(rtx_def*, int)

    ../../../gcc.gnu.org/trunk/gcc/reload1.c:941

0x843f543 do_reload

    ../../../gcc.gnu.org/trunk/gcc/ira.c:4631

0x843f543 rest_of_handle_reload

    ../../../gcc.gnu.org/trunk/gcc/ira.c:4731

Please submit a full bug report,


== configure ==

Target: avr
Configured with: ../../gcc.gnu.org/trunk/configure --target=avr
--prefix=/local/gnu/install/gcc-4.8 --disable-nls --with-dwarf2
--enable-target-optspace=yes --enable-languages=c,c++
Thread model: single
gcc version 4.8.0 20130228 (experimental) (GCC)


FAIL: gcc.c-torture/compile/pr55921.c  -O1  (internal compiler error)
FAIL: gcc.c-torture/compile/pr55921.c  -O2  (internal compiler error)
FAIL: gcc.c-torture/compile/pr55921.c  -O3 -fomit-frame-pointer  (internal
compiler error)
FAIL: gcc.c-torture/compile/pr55921.c  -O3 -g  (internal compiler error)
FAIL: gcc.c-torture/compile/pr55921.c  -Os  (internal compiler error)
FAIL: gcc.c-torture/compile/pr55921.c  -O2 -flto -flto-partition=none 
(internal compiler error)
FAIL: gcc.c-torture/compile/pr55921.c  -O2 -flto  (internal compiler error)