[tree-ssa]: Easy way to get default def of a variable?

[Andrew MacLeod]

On Wed, 2003-06-04 at 16:48, Daniel Berlin wrote:
> Sometimes, when doing injury insertions, we need to know the default 
> definition of a variable.

Whats an injury insertion?

> IE the first version of the variable.
> 

The first version of all variables, or just the the versions which are a
use of a variable which doesn't have a definition? Meaning that it is
live on entry to the function?  

Andrew