Fix problems due to generating Neon instructions on non-Neon capable

* iselNeon64Expr, iselNeonExpr: assert that the host is actually

* iselIntExpr_R_wrk, existing cases for Iop_GetElem8x8,
  Iop_GetElem16x4, Iop_GetElem32x2, Iop_GetElem8x16, Iop_GetElem16x8,
  Limit these to cases where the host is Neon capable, else we wind up
  generating code which can't run on the host.

* iselIntExpr_R_wrk: add alternative implementation for
  Iop_GetElem32x2 for non-Neon capable hosts.

git-svn-id: svn:// 8f6e269a-dfd6-0310-a8e1-e2731360e62c
1 file changed