[Bug rtl-optimization/61239] [4.10 Regression]: ICE in decompose, at rtl.h when compiling vshuf-v16hi.c using -mavx2

[ubizjak at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61239

Uroš Bizjak <ubizjak at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |jakub at gcc dot gnu.org

--- Comment #2 from Uroš Bizjak <ubizjak at gmail dot com> ---
Some more digging:

(gdb) up
#10 0x0000000000ee741e in ix86_expand_vec_perm (operands=0x7fffffffaf30) at
../../gcc-svn/trunk/gcc/config/i386/i386.c:21548
21548             vt = force_reg (V32QImode, vt);
(gdb) p debug_rtx (vt)
(const_vector:V32QI [
        (const_int 128 [0x80])
        (const_int 128 [0x80])
        (const_int 128 [0x80])
        (const_int 128 [0x80])
        (const_int 128 [0x80])
        (const_int 128 [0x80])
        (const_int 128 [0x80])
        (const_int 128 [0x80])
        (const_int 128 [0x80])
        (const_int 128 [0x80])
        (const_int 128 [0x80])
        (const_int 128 [0x80])
        (const_int 128 [0x80])
        (const_int 128 [0x80])
        (const_int 128 [0x80])
        (const_int 128 [0x80])
        (const_int 128 [0x80])
        (const_int 128 [0x80])
        (const_int 128 [0x80])
        (const_int 128 [0x80])
        (const_int 128 [0x80])
        (const_int 128 [0x80])
        (const_int 128 [0x80])
        (const_int 128 [0x80])
        (const_int 128 [0x80])
        (const_int 128 [0x80])
        (const_int 128 [0x80])
        (const_int 128 [0x80])
        (const_int 128 [0x80])
        (const_int 128 [0x80])
        (const_int 128 [0x80])
        (const_int 128 [0x80])
    ])
$11 = void

These don't look like valid QImode elements. Jakub?