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

llvm-svn: 273602

1 files changed, 5 insertions, 3 deletions

diff --git a/clang/lib/CodeGen/CodeGenFunction.h b/clang/lib/CodeGen/CodeGenFunction.h
index b96e6ba..af7e611 100644
--- a/clang/lib/CodeGen/CodeGenFunction.h
+++ b/clang/lib/CodeGen/CodeGenFunction.h
@@ -3051,13 +3051,15 @@ public:
   /// ConstantFoldsToSimpleInteger - If the specified expression does not fold
   /// to a constant, or if it does but contains a label, return false.  If it
   /// constant folds return true and set the boolean result in Result.
-  bool ConstantFoldsToSimpleInteger(const Expr *Cond, bool &Result);
+  bool ConstantFoldsToSimpleInteger(const Expr *Cond, bool &Result,
+                                    bool AllowLabels = false);
 
   /// ConstantFoldsToSimpleInteger - If the specified expression does not fold
   /// to a constant, or if it does but contains a label, return false.  If it
   /// constant folds return true and set the folded value.
-  bool ConstantFoldsToSimpleInteger(const Expr *Cond, llvm::APSInt &Result);
-  
+  bool ConstantFoldsToSimpleInteger(const Expr *Cond, llvm::APSInt &Result,
+                                    bool AllowLabels = false);
+
   /// EmitBranchOnBoolExpr - Emit a branch on a boolean condition (e.g. for an
   /// if statement) to the specified blocks.  Based on the condition, this might
   /// try to simplify the codegen of the conditional based on the branch.