[Bug target/63764] [5 Regression] ICE: in verify_ssa, at tree-ssa.c:939

["joseph at codesourcery dot com" <gcc-bugzilla@gcc.gnu.org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63764

--- Comment #11 from joseph at codesourcery dot com <joseph at codesourcery dot com> ---
On Tue, 18 Nov 2014, jakub at gcc dot gnu.org wrote:

> > I'd think it's reasonable to subscript a non-lvalue vector (including e.g. 
> > the return value of a function with vector return type) - this might of 
> > course need to create a temporary object, as with non-lvalue arrays.
> 
> For rhs yes, supposedly.  But not for lhs.  So, perhaps if *vecp is not an
> lvalue, assign to temporary and take address of that, but then in the end wrap
> the result of the subscripting into NON_LVALUE_EXPR, so that we actually error
> out on the testcase?

Yes, that sort of thing - make the result of subscripting not an lvalue if 
the expression subscripted is not an lvalue, so that an error results on 
assigning to it.