Tree based combiner/simplifier
- GCC currently does not simplification across multiple expressions, the tree combiner improves that by taking two Gimple expression and combining them and simplifing them using fold.
- Andrew Pinski
- GCC will produce less sign extends, it should also speed up the compiler.
- None right now
- A new pass, fully maintained in tree-combine.c.
This is not a full pass/project yet, just wanted to write it down.