Simplify operands of bitwise OR expressions as booleans. Deals with a TODO in a more general way.

2015-03-28 20:16:06 +01:00
parent 6813bb0458
commit de33c2df01
1 changed files with 4 additions and 1 deletions
--- a/lslopt/lslfoldconst.py
+++ b/lslopt/lslfoldconst.py
@@ -128,7 +128,10 @@ class foldconst(object):
                    self.FoldTree(parent, index)

            if nt == '|':
-                #TODO: simplify !!a|b or a|!!b -> a|b
+                # In a boolean context, the operands count as booleans.
+                self.FoldCond(child, 0)
+                self.FoldCond(child, 1)
+
                a, b = 0, 1
                if child[a]['nt'] == 'CONST':
                    a, b = 1, 0