diff options
Diffstat (limited to 'chapter13/src/main/java/com')
| -rw-r--r-- | chapter13/src/main/java/com/seaofnodes/simple/node/CProjNode.java | 17 |
1 files changed, 7 insertions, 10 deletions
diff --git a/chapter13/src/main/java/com/seaofnodes/simple/node/CProjNode.java b/chapter13/src/main/java/com/seaofnodes/simple/node/CProjNode.java index 3d6fd1fa..fb0ff879 100644 --- a/chapter13/src/main/java/com/seaofnodes/simple/node/CProjNode.java +++ b/chapter13/src/main/java/com/seaofnodes/simple/node/CProjNode.java @@ -37,17 +37,14 @@ public class CProjNode extends CFGNode { @Override public Node idealize() { - if( ctrl()._type instanceof TypeTuple tt ) { - if( tt._types[_idx]==Type.XCONTROL ) - return Parser.XCTRL; // 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 CProjNode(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 CProjNode(new IfNode(iff.ctrl(),not.in(1)).peephole(),1-_idx,_idx==0 ? "False" : "True"); + } return null; } |