[Bug target/66866] [miscompile] incorrect load address on manual vector shuffle

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66866

--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
bool
ix86_expand_pinsr (rtx *operands)
{
...
  if (GET_CODE (src) == SUBREG)
    src = SUBREG_REG (src);

and lost SUBREG_OFFSET.