Implement p0292r2 (constexpr if), a likely C++1z feature.

llvm-svn: 273602
diff --git a/clang/lib/Analysis/BodyFarm.cpp b/clang/lib/Analysis/BodyFarm.cpp
index d8b652f..0716701 100644
--- a/clang/lib/Analysis/BodyFarm.cpp
+++ b/clang/lib/Analysis/BodyFarm.cpp
@@ -239,7 +239,7 @@
                                            SourceLocation());
   
   // (5) Create the 'if' statement.
-  IfStmt *If = new (C) IfStmt(C, SourceLocation(), nullptr, UO, CS);
+  IfStmt *If = new (C) IfStmt(C, SourceLocation(), false, nullptr, UO, CS);
   return If;
 }
 
@@ -343,7 +343,7 @@
   
   /// Construct the If.
   Stmt *If =
-    new (C) IfStmt(C, SourceLocation(), nullptr, Comparison, Body,
+    new (C) IfStmt(C, SourceLocation(), false, nullptr, Comparison, Body,
                    SourceLocation(), Else);
 
   return If;