diff options
Diffstat (limited to 'chapter10/src')
| -rw-r--r-- | chapter10/src/main/java/com/seaofnodes/simple/node/ProjNode.java | 17 |
1 files changed, 7 insertions, 10 deletions
diff --git a/chapter10/src/main/java/com/seaofnodes/simple/node/ProjNode.java b/chapter10/src/main/java/com/seaofnodes/simple/node/ProjNode.java index 18526677..735fcdf3 100644 --- a/chapter10/src/main/java/com/seaofnodes/simple/node/ProjNode.java +++ b/chapter10/src/main/java/com/seaofnodes/simple/node/ProjNode.java @@ -40,17 +40,14 @@ public class ProjNode extends Node { @Override public Node idealize() { - if( ctrl()._type instanceof TypeTuple tt ) { - if( tt._types[_idx]==Type.XCONTROL ) - return new ConstantNode(Type.XCONTROL).peephole(); // We are dead - if( ctrl() instanceof IfNode && tt._types[1-_idx]==Type.XCONTROL ) // Only true for IfNodes - return ctrl().in(0); // We become our input control - } - - // Flip a negating if-test, to remove the not - if( ctrl() instanceof IfNode iff && iff.pred().addDep(this) instanceof NotNode not ) - return new ProjNode((MultiNode)new IfNode(iff.ctrl(),not.in(1)).peephole(),1-_idx,_idx==0 ? "False" : "True"); + if ( ctrl() instanceof IfNode iff ) { + if ( iff._type instanceof TypeTuple tt && tt._types[1 - _idx] == Type.XCONTROL ) + return iff.in(0); // We become our input control + // Flip a negating if-test, to remove the not + if( iff.pred().addDep(this) instanceof NotNode not ) + return new ProjNode((MultiNode)new IfNode(iff.ctrl(),not.in(1)).peephole(),1-_idx,_idx==0 ? "False" : "True"); + } return null; } |