[Bug target/49696] New: ICE on mips when compiling drizzle

[Bug target/49696] New: ICE on mips when compiling drizzle

[aurelien at aurel32 dot net]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49696

           Summary: ICE on mips when compiling drizzle
           Product: gcc
           Version: 4.6.2
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: aurelien@aurel32.net
              Host: mips-unknown-linux-gnu
            Target: mips-unknown-linux-gnu
             Build: mips-unknown-linux-gnu


Created attachment 24731
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=24731
Testcase to reproduce the issue

When building drizzle on mips, g++ crash with an internal compiler error. The
problem is reproducible with versions 4.4, 4.5 and 4.6, but not with version
4.3 (I didn't test earlier versions). I have attached a reduced testcase.

$ g++ -c ./testcase-min.ii
./testcase-min.ii: In member function 'drizzled::internal::gcc_traits<T,
D>::value_type drizzled::internal::gcc_traits<T, D>::fetch(const volatile
value_type*) const volatile [with T = bool, D = bool,
drizzled::internal::gcc_traits<T, D>::value_type = bool]':
./testcase-min.ii:12:5: error: unrecognizable insn:
(insn 16 15 17 3 (parallel [
            (set (reg:SI 205)
                (mem/v:SI (reg:SI 200) [-1 S4 A32]))
            (set (mem/v:SI (reg:SI 200) [-1 S4 A32])
                (unspec_volatile:SI [
                        (reg:SI 203)
                        (reg:SI 204)
                        (plus:SI (reg:SI 205)
                            (const_int 0 [0]))
                    ] UNSPEC_SYNC_OLD_OP_12))
            (clobber (scratch:SI))
        ]) ./testcase-min.ii:11 -1
     (nil))
./testcase-min.ii:12:5: internal compiler error: in extract_insn, at
recog.c:2109
Please submit a full bug report,
with preprocessed source if appropriate.

[Bug target/49696] ICE on mips when compiling drizzle

[rsandifo at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49696

--- Comment #1 from rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> 2011-10-02 17:45:16 UTC ---
Author: rsandifo
Date: Sun Oct  2 17:45:10 2011
New Revision: 179431

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=179431
Log:
gcc/
    PR target/49696
    * config/mips/sync.md (sync_<optab>_12): Allow zero operands.
    (sync_old_<optab>_12, sync_new_<optab>_12, sync_nand_12): Likewise.
    (sync_old_nand_12, sync_new_nand_12, test_and_set_12): Likewise.

gcc/testsuite/
    * gcc.dg/pr49696.c: New test.

Added:
    trunk/gcc/testsuite/gcc.dg/pr49696.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/mips/sync.md
    trunk/gcc/testsuite/ChangeLog

[Bug target/49696] ICE on mips when compiling drizzle

[rsandifo at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49696

rsandifo@gcc.gnu.org <rsandifo at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
                 CC|                            |rsandifo at gcc dot gnu.org
         Resolution|                            |FIXED

--- Comment #2 from rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> 2011-10-02 17:47:53 UTC ---
Patch applied to trunk.  I don't think this is a regression,
so it probably isn't suitable for the release branches.

[Bug target/49696] ICE on mips when compiling drizzle

[aurelien at aurel32 dot net]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49696

--- Comment #3 from Aurelien Jarno <aurelien at aurel32 dot net> 2011-10-06 06:40:46 UTC ---
I confirm the issue is fixed in trunk. Thanks!