machine-dependent Passes on GIMPLE/SSA Tree's?

[Diego Novillo]

Markus Franke wrote on 11/27/06 12:50:

> Are there also some other optimisation passes working on the GIMPLE/SSA
> representation which make use of any machine-dependent features?
> 
Yes.  Passes like vectorization and loop optimizations will use so 
called 'target hooks' which allow the high-level passes to query the 
target for various capabilities and attributes.  See the tree-vect*.c 
files for several examples.