[Bug tree-optimization/52891] New: ICE in adjust_bool_pattern

[merkil at savhon dot org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52891

             Bug #: 52891
           Summary: ICE in adjust_bool_pattern
    Classification: Unclassified
           Product: gcc
           Version: 4.8.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
        AssignedTo: unassig...@gcc.gnu.org
        ReportedBy: mer...@savhon.org


I seem to have triggered a bug in the tree vectorizer of GCC as of 20120404.

$ cat file.c

struct S1
{
    int intfield;

    struct
    {
        unsigned ufield:10;
    } sfield;
};

int func2(short param1, short param2)
{
    int **intptr;

    if((param1 && param2) + **intptr)
        while(1);
}

void func1(void)
{
    struct S1 foo;
    func2(foo.intfield, foo.sfield.ufield);
}

$ ~/gcc/dist/bin/gcc --version

gcc (GCC) 4.8.0 20120404 (experimental)
Copyright (C) 2012 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

$ ~/gcc/dist/bin/gcc -O2 -ftree-vectorize file.c


Using built-in specs.
COLLECT_GCC=/home/merkil/gcc/dist/bin/gcc
COLLECT_LTO_WRAPPER=/home/merkil/gcc/dist/libexec/gcc/x86_64-unknown-linux-gnu/4.8.0/lto-wrapper
Target: x86_64-unknown-linux-gnu
Configured with: ../srcdir/configure --prefix=/home/merkil/gcc/dist CFLAGS='
-O2 -pipe' CXXFLAGS=' -O2 -pipe' --enable-languages=c,c++,lto
Thread model: posix
gcc version 4.8.0 20120404 (experimental) (GCC) 
COLLECT_GCC_OPTIONS='-O2' '-ftree-vectorize' '-v' '-mtune=generic'
'-march=x86-64'
 /home/merkil/gcc/dist/libexec/gcc/x86_64-unknown-linux-gnu/4.8.0/cc1 -quiet -v
file.c -quiet -dumpbase file.c -mtune=generic -march=x86-64 -auxbase file -O2
-version -ftree-vectorize -o /tmp/ccuzSuSy.s
GNU C (GCC) version 4.8.0 20120404 (experimental) (x86_64-unknown-linux-gnu)
    compiled by GNU C version 4.8.0 20120404 (experimental), GMP version 5.0.4,
MPFR version 3.1.0-p3, MPC version 0.9
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096
ignoring nonexistent directory
"/home/merkil/gcc/dist/lib/gcc/x86_64-unknown-linux-gnu/4.8.0/../../../../x86_64-unknown-linux-gnu/include"
#include "..." search starts here:
#include <...> search starts here:
 /home/merkil/gcc/dist/lib/gcc/x86_64-unknown-linux-gnu/4.8.0/include
 /usr/local/include
 /home/merkil/gcc/dist/include
 /home/merkil/gcc/dist/lib/gcc/x86_64-unknown-linux-gnu/4.8.0/include-fixed
 /usr/include
End of search list.
GNU C (GCC) version 4.8.0 20120404 (experimental) (x86_64-unknown-linux-gnu)
    compiled by GNU C version 4.8.0 20120404 (experimental), GMP version 5.0.4,
MPFR version 3.1.0-p3, MPC version 0.9
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096
Compiler executable checksum: 77c744b2fbaa15d9025679f4b671f18a
file.c: In function 'func1':
file.c:19:6: internal compiler error: in adjust_bool_pattern, at
tree-vect-patterns.c:2301
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.

Hope that is useful to you :-)