Tests if the op is a phi and has all constant inputs. If not, returns null. If op is a phi, but its inputs are not all constants, then dep is added as

Try to peephole at this node and return a better replacement Node if possible. We compute a {@link Type} and then check and replace: <ul> <li>if the

Looks up the current SSA value (virtual register) associated with a name, inside a block. If no mapping is found, processing depends on status of the

The source is replaced by target in the graph. All nodes that interfered with source are made to interfere with target.

Associates a new definition (value) to a variable name within a basic block

Populate the members of a phi instruction

Recurses through immediate expression children in evaluation order.

This test case is based on the example snippet from Briggs paper illustrating the lost copy problem.

This test case is based on the example snippet from Briggs paper illustrating the swap problem.