Add has_free_vars predicate.

diff --git a/CoreTools.hs b/CoreTools.hs
index c797bb7581fa3b615af426e1693f4ff6303235ae..dfb4f5c680ddebede83c4584c59beb4fe82e7b3b 100644 (file)
--- a/CoreTools.hs
+++ b/CoreTools.hs
@@ -149,6 +149,10 @@ is_applicable expr = is_fun expr || is_poly expr
 has_free_tyvars :: CoreSyn.CoreExpr -> Bool
 has_free_tyvars = not . VarSet.isEmptyVarSet . (CoreFVs.exprSomeFreeVars Var.isTyVar)
 
+-- Does the given CoreExpr have any free local vars?
+has_free_vars :: CoreSyn.CoreExpr -> Bool
+has_free_vars = not . VarSet.isEmptyVarSet . CoreFVs.exprFreeVars
+
 -- Turns a Var CoreExpr into the Id inside it. Will of course only work for
 -- simple Var CoreExprs, not complexer ones.
 exprToVar :: CoreSyn.CoreExpr -> Var.Id