[IA-64] Work around bug in unwinder

[Richard Henderson]

On 03/21/2012 01:03 PM, Eric Botcazou wrote:
> 2012-03-21  Eric Botcazou  <ebotcazou@adacore.com>
> 
> 	* config/ia64/unwind-ia64.c (uw_install_context): Manually save LC
> 	if it hasn't been previously saved.

Looks ok, given the other ugliness in this macro.


r~