diff options
Diffstat (limited to 'chapter14')
| -rw-r--r-- | chapter14/src/main/java/com/seaofnodes/simple/node/SubNode.java | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/chapter14/src/main/java/com/seaofnodes/simple/node/SubNode.java b/chapter14/src/main/java/com/seaofnodes/simple/node/SubNode.java index 009fb30e..6d2f1711 100644 --- a/chapter14/src/main/java/com/seaofnodes/simple/node/SubNode.java +++ b/chapter14/src/main/java/com/seaofnodes/simple/node/SubNode.java @@ -22,6 +22,10 @@ public class SubNode extends Node { @Override public Type compute() { + // Sub of same is 0 + if( in(1)==in(2) ) + return TypeInteger.ZERO; + Type t1 = in(1)._type, t2 = in(2)._type; if( t1.isHigh() || t2.isHigh() ) return TypeInteger.TOP; @@ -30,9 +34,6 @@ public class SubNode extends Node { if (i1.isConstant() && i2.isConstant()) return TypeInteger.constant(i1.value()-i2.value()); } - // Sub of same is 0 - if( in(1)==in(2) ) - return TypeInteger.ZERO; return TypeInteger.BOT; } |