[Bug c/95479] New: ICE in convert_move, at expr.c:271

[Bug c/95479] New: ICE in convert_move, at expr.c:271

[royeldar at hotmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95479

            Bug ID: 95479
           Summary: ICE in convert_move, at expr.c:271
           Product: gcc
           Version: 6.3.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
          Assignee: unassigned at gcc dot gnu.org
          Reporter: royeldar at hotmail dot com
  Target Milestone: ---

The following code doesn't compile and results in an ICE.
I suspect this behavior has something to do with the line
        __attribute__((target(("avx2"))))


$ cat bug.c
typedef long long __m256i __attribute__((__vector_size__(32), __may_alias__));

struct {
        __m256i w256;
} g_var;

__attribute__((target(("avx2"))))
void func() {
        __m256i var = g_var.w256;
        (void)var;
}

$ gcc -c -v bug.c
Using built-in specs.
COLLECT_GCC=gcc
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Debian 6.3.0-18+deb9u1'
 --with-bugurl=file:///usr/share/doc/gcc-6/README.Bugs --enable-languages=c,ada
 ,c++,java,go,d,fortran,objc,obj-c++ --prefix=/usr --program-suffix=-6
 --program-prefix=x86_64-linux-gnu- --enable-shared --enable-linker-build-id
 --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix
 --libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu
 --enable-libstdcxx-debug --enable-libstdcxx-time=yes
 --with-default-libstdcxx-abi=new --enable-gnu-unique-object
 --disable-vtable-verify --enable-libmpx --enable-plugin --enable-default-pie
 --with-system-zlib --disable-browser-plugin --enable-java-awt=gtk
 --enable-gtk-cairo --with-java-home=/usr/lib/jvm/java-1.5.0-gcj-6-amd64/jre
 --enable-java-home --with-jvm-root-dir=/usr/lib/jvm/java-1.5.0-gcj-6-amd64
 --with-jvm-jar-dir=/usr/lib/jvm-exports/java-1.5.0-gcj-6-amd64
 --with-arch-directory=amd64 --with-ecj-jar=/usr/share/java/eclipse-ecj.jar
 --with-target-system-zlib --enable-objc-gc=auto --enable-multiarch
 --with-arch-32=i686 --with-abi=m64 --with-multilib-list=m32,m64,mx32
 --enable-multilib --with-tune=generic --enable-checking=release
 --build=x86_64-linux-gnu --host=x86_64-linux-gnu --target=x86_64-linux-gnu
Thread model: posix
gcc version 6.3.0 20170516 (Debian 6.3.0-18+deb9u1)
COLLECT_GCC_OPTIONS='-c' '-v' '-mtune=generic' '-march=x86-64'
 /usr/lib/gcc/x86_64-linux-gnu/6/cc1 -quiet -v -imultiarch x86_64-linux-gnu
 bug.c -quiet -dumpbase bug.c -mtune=generic -march=x86-64 -auxbase bug
-version
 -o /tmp/ccpCodYe.s
GNU C11 (Debian 6.3.0-18+deb9u1) version 6.3.0 20170516 (x86_64-linux-gnu)
        compiled by GNU C version 6.3.0 20170516, GMP version 6.1.2,
                MPFR version 3.1.5, MPC version 1.0.3, isl version 0.15
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
ignoring nonexistent directory "/usr/local/include/x86_64-linux-gnu"
ignoring nonexistent directory
"/usr/lib/gcc/x86_64-linux-gnu/6/../../../../x86_64-linux-gnu/include"
#include "..." search starts here:
#include <...> search starts here:
 /usr/lib/gcc/x86_64-linux-gnu/6/include
 /usr/local/include
 /usr/lib/gcc/x86_64-linux-gnu/6/include-fixed
 /usr/include/x86_64-linux-gnu
 /usr/include
End of search list.
GNU C11 (Debian 6.3.0-18+deb9u1) version 6.3.0 20170516 (x86_64-linux-gnu)
        compiled by GNU C version 6.3.0 20170516, GMP version 6.1.2,
                MPFR version 3.1.5, MPC version 1.0.3, isl version 0.15
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
Compiler executable checksum: b8e5d7f3c4236757ee0871869b8330f3
bug.c: In function ‘func’:
bug.c:9:10: internal compiler error: in convert_move, at expr.c:271
  __m256i var = g_var.w256;
          ^~~

[Bug c/95479] ICE in convert_move, at expr.c:271

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95479

Martin Liška <marxin at gcc dot gnu.org> changed:

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

--- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> ---
Fixed on master with r8-5073-ge034c5c895722e00.
Please update to any of the supported compilers: 8,9,10.