Change the interface to ConstantFoldsToSimpleInteger to not encode 
a bool + success into one tri-state integer, simplifying things.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@126592 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/CGExpr.cpp b/lib/CodeGen/CGExpr.cpp
index 2abaadf..e358496 100644
--- a/lib/CodeGen/CGExpr.cpp
+++ b/lib/CodeGen/CGExpr.cpp
@@ -1715,10 +1715,10 @@
   }
 
   const Expr *condExpr = expr->getCond();
-
-  if (int condValue = ConstantFoldsToSimpleInteger(condExpr)) {
+  bool CondExprBool;
+  if (ConstantFoldsToSimpleInteger(condExpr, CondExprBool)) {
     const Expr *live = expr->getTrueExpr(), *dead = expr->getFalseExpr();
-    if (condValue == -1) std::swap(live, dead);
+    if (!CondExprBool) std::swap(live, dead);
 
     if (!ContainsLabel(dead))
       return EmitLValue(live);