[Bug target/87288] Segfault after const_cast with "-O2 -ftree-loop-vectorize" but _without_ "-mavx"

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87288

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Target|                            |x86_64-*-* i?86-*-*
             Status|UNCONFIRMED                 |NEW
           Keywords|                            |wrong-code
   Last reconfirmed|                            |2018-09-12
          Component|tree-optimization           |target
                 CC|                            |rguenth at gcc dot gnu.org
     Ever confirmed|0                           |1
      Known to fail|                            |9.0

--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Confirmed on trunk.

   0x0000000000400508 <+56>:    movupd (%rax,%rdx,2),%xmm0
   0x000000000040050d <+61>:    movhpd 0x10(%rax,%rdx,2),%xmm0
=> 0x0000000000400513 <+67>:    movaps %xmm0,(%rsp,%rdx,1)
   0x0000000000400517 <+71>:    add    $0x10,%rdx
   0x000000000040051b <+75>:    cmp    %rdx,%rcx
   0x000000000040051e <+78>:    jne    0x400508 <main(int, char**)+56>

and

        base_address: &jacobianTransposeds
        offset from base address: 0
        constant offset from base address: 0
        step: 8
        base alignment: 16
        base misalignment: 0
        offset alignment: 128
        step alignment: 8
        base_object: MEM[(double &)&jacobianTransposeds]
        Access function 0: {0B, +, 8}_1

not sure where that offset 1 comes from... (also movaps vs. movapd, but ...).