X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=lib%2FTarget%2FSystemZ%2FSystemZElimCompare.cpp;h=16f9adc79f1763b649933c857015978ac0dfad88;hb=d4cdf1962b2242fb155ee2203199dd043725e7e1;hp=1ea02984f3d10e03c06caae12ad979c1817dcc75;hpb=6035518e3bd06cef0515af5a319fbe2cea7df6d4;p=oota-llvm.git

diff --git a/lib/Target/SystemZ/SystemZElimCompare.cpp b/lib/Target/SystemZ/SystemZElimCompare.cpp
index 1ea02984f3d..16f9adc79f1 100644
--- a/lib/Target/SystemZ/SystemZElimCompare.cpp
+++ b/lib/Target/SystemZ/SystemZElimCompare.cpp
@@ -47,7 +47,7 @@ struct Reference {
     return *this;
   }
 
-  operator bool() const { return Def || Use; }
+  explicit operator bool() const { return Def || Use; }
 
   // True if the register is defined or used in some form, either directly or
   // via a sub- or super-register.