[LLVMdev] Unknown or runtime type in function definition?

[Bueno, Denis]

Hello all,

I'm trying to understand a bit of LLVM IR syntax.  I have a function
definition which looks like this in IR:

    define void @foo(%1* ptr) { ...

The C code for foo has a definition that looks like:

    typedef struct bar_struct bar;
    ... Definition of struct bar_struct ...
    void foo(bar *ptr) { ...

I can't whittle down a convenient test source file just now; but I'm trying
to understand what the syntax of the 'define' above means -- specifically,
what does it mean for a parameter to have type '%1*'?  What is the semantics
here?  Inside the body of @foo, there is an SSA variable %1 -- is that
variable related to the %1 in the type of the parameter?  (It doesn't seem
to be, which is why I ask.)

I looked in the LLVM Language Reference manual but couldn't find any type
syntax that corresponded to the type I see for foo's parameter.  I'm not
sure where else to look, but I'd be happy to hear any pointers.

Any help is appreciated.  Thanks in advance.

-Denis