[Truffle] Comment why we aren't using negate exact yet.

jruby · Oct 13, 2016 · 410ce6a · 410ce6a
1 parent 3b2f4ff
commit 410ce6a
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/truffle/src/main/java/org/jruby/truffle/core/numeric/FixnumNodes.java b/truffle/src/main/java/org/jruby/truffle/core/numeric/FixnumNodes.java
@@ -51,6 +51,7 @@ public abstract static class NegNode extends CoreMethodArrayArgumentsNode {
 
         @Specialization(rewriteOn = ArithmeticException.class)
         public int neg(int value) {
+            // TODO CS 13-Oct-16, use negateExact, but this isn't intrinsified by Graal yet
             return Math.subtractExact(0, value);
         }
 
@@ -1004,6 +1005,7 @@ public abstract static class AbsNode extends CoreMethodArrayArgumentsNode {
 
         @Specialization(rewriteOn = ArithmeticException.class)
         public int absIntInBounds(int n) {
+            // TODO CS 13-Oct-16, use negateExact, but this isn't intrinsified by Graal yet
             return (n < 0) ? Math.subtractExact(0, n) : n;
         }