Re: Use of VLA in struct in gcc-torture/execute/20020412-1.c

[Richard Henderson <rth at redhat dot com>]

On Sat, Sep 07, 2002 at 11:41:12PM -0400, David Edelsohn wrote:
> John> Why never in registers?  In the PA64 ABI, the registers mirror the
> John> stack and the callee can save the registers to the stack if it wants.
> John> The same is also true for the 32-bit ABI.
> 
> 	It simply is missing functionality in the common part of GCC.
> Richard's statement is not that it cannot be done, it is a statement of
> the facts about the current support in GCC.

Actually, no.  Think about how subsequent arguments must be
handled.  I.e. foo in

	void f(variable_sized v, int foo);

I remember looking at this issue for sparc64 and concluding
that it couldn't be done.


r~