[Bug c/46044] ICE in get_attr_first_insn on ia64 Itanium

[Bug c/46044] ICE in get_attr_first_insn on ia64 Itanium

[jdemeyer at cage dot ugent.be]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46044

--- Comment #1 from Jeroen Demeyer <jdemeyer at cage dot ugent.be> 2010-10-16 12:33:34 UTC ---
Created attachment 22060
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=22060
testcase

[Bug c/46044] New: ICE in get_attr_first_insn on ia64 Itanium

[jdemeyer at cage dot ugent.be]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46044

           Summary: ICE in get_attr_first_insn on ia64 Itanium
           Product: gcc
           Version: 4.5.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: jdemeyer@cage.ugent.be


On a Red Hat Enterprise Linux 5 system on Intel Itanium 2 processors:

$ uname -a
Linux cleo 2.6.18-128.1.1.el5 #1 SMP Mon Jan 26 13:57:09 EST 2009 ia64 ia64
ia64 GNU/Linux

$ gcc -v -O3 krasner.i -c -o krasner.o
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/local/gcc-4.5.1/ia64-Linux-rhel/libexec/gcc/ia64-unknown-linux-gnu/4.5.1/lto-wrapper
Target: ia64-unknown-linux-gnu
Configured with: /usr/local/gcc-4.5.1/src/gcc-4.5.1/configure
--enable-languages=c,c++,fortran --with-gnu-as
--with-as=/usr/local/binutils-2.20.1/ia64-Linux-rhel-gcc-4.4.3/bin/as
--with-gnu-ld
--with-ld=/usr/local/binutils-2.20.1/ia64-Linux-rhel-gcc-4.4.3/bin/ld
--with-gmp=/usr/local/gmp-5.0.1/ia64-Linux-rhel-gcc-4.5.0
--with-mpfr=/usr/local/mpfr-3.0.0/ia64-Linux-rhel-gmp-5.0.1-gcc-4.5.0
--with-mpc=/usr/local/mpc-0.8.2/ia64-Linux-rhel-mpfr-3.0.0-gmp-5.0.1-gcc-4.5.0
--prefix=/usr/local/gcc-4.5.1/ia64-Linux-rhel
Thread model: posix
gcc version 4.5.1 (GCC)
COLLECT_GCC_OPTIONS='-v' '-O3' '-c' '-o' 'krasner.o'

/usr/local/gcc-4.5.1/ia64-Linux-rhel/libexec/gcc/ia64-unknown-linux-gnu/4.5.1/cc1
-fpreprocessed krasner.i -quiet -dumpbase krasner.i -auxbase-strip krasner.o
-O3 -version -o /tmp/ccf8q5Rb.s
GNU C (GCC) version 4.5.1 (ia64-unknown-linux-gnu)
        compiled by GNU C version 4.5.1, GMP version 5.0.1, MPFR version 3.0.0,
MPC version 0.8.2
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
GNU C (GCC) version 4.5.1 (ia64-unknown-linux-gnu)
        compiled by GNU C version 4.5.1, GMP version 5.0.1, MPFR version 3.0.0,
MPC version 0.8.2
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
Compiler executable checksum: ffd8a52aa8a650053718419da68f7db2
krasner.i: In function "krasner":
krasner.i:30:1: error: unrecognizable insn:
(insn:TI 259 278 279 18 (parallel [
            (set (reg:DI 14 r14 [orig:411 n1 ] [411])
                (asm_operands:DI ("") ("=&r") 0 [
                        (reg/v:DI 32 r34 [orig:395 i ] [395])
                        (reg:SI 15 r15 [413])
                    ]
                     [
                        (asm_input:DI ("r") (null):0)
                        (asm_input:SI ("r") (null):0)
                    ]
                     [] krasner.i:30))
            (set (reg:DI 32 r34 [orig:412 n0 ] [412])
                (asm_operands:DI ("") ("=r") 1 [
                        (reg/v:DI 32 r34 [orig:395 i ] [395])
                        (reg:SI 15 r15 [413])
                    ]
                     [
                        (asm_input:DI ("r") (null):0)
                        (asm_input:SI ("r") (null):0)
                    ]
                     [] krasner.i:30))
        ]) -1 (nil))
krasner.i:30:1: internal compiler error: in get_attr_first_insn, at
config/ia64/itanium2.md:1909
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.

[Bug target/46044] ICE in get_attr_first_insn on ia64 Itanium

[sje at cup dot hp.com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46044

Steve Ellcey <sje at cup dot hp.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2010.10.26 23:38:56
                 CC|                            |sje at cup dot hp.com
     Ever Confirmed|0                           |1

--- Comment #2 from Steve Ellcey <sje at cup dot hp.com> 2010-10-26 23:38:56 UTC ---
I can reproduce this on the top of the 4.5 branch but not on ToT.  I am not
sure if there was a specific fix for this problem or if it doesn't happen on
ToT due to some unrelated change that makes the bug latent.

[Bug target/46044] ICE in get_attr_first_insn on ia64 Itanium

[sje at cup dot hp.com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46044

--- Comment #3 from Steve Ellcey <sje at cup dot hp.com> 2010-10-26 23:46:04 UTC ---
This may be related to PR 43603.