[llvm-commits] patch 2: langref "derived types" cleanup
Duncan Sands
baldrick at free.fr
Sun Sep 27 05:31:07 PDT 2009
Hi Nick,
> + function type is a <a href="#t_firstclass">first class type</a>,
> + <a href="#t_void">void</a>, or <a href="#t_metadata">metadata</a>.
can a function really return metadata?
If the
> + return type is a <a href="#t_struct">struct type</a> then the struct must
> + have at least one element. The argument of a function must be first class
> + types.</p>
Why must a returned struct have an element? I thought the plan was to
get rid of the "void" return type and return {} instead.
> - underlying processor. The elements of a structure may be any type that has a
> - size.</p>
> + underlying processor. The elements of a structure may be any
> + <a href="#t_firstclass">first class</a> type.</p>
So "first class" is the same as "has a size"?
> elements) and an underlying primitive data type. Vectors must have a power
> - of two length (1, 2, 4, 8, 16 ...). Vector types are considered
> - <a href="#t_firstclass">first class</a>.</p>
> + of two length (1, 2, 4, 8, 16 ...).</p>
Actually vectors don't have to have a power-of-two length anymore.
Ciao,
Duncan.
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