The Darwin kernel does not provide useful guard variable support.

Issue this as an IR-gen error;  it's not really worthwhile doing this
"right", i.e. in Sema, because IR gen knows a lot of tricks beyond
what the constant evaluator knows.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@127854 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 3 insertions, 0 deletions

diff --git a/include/clang/Frontend/CodeGenOptions.h b/include/clang/Frontend/CodeGenOptions.h
index ee85b655c2..875fbcd177 100644
--- a/include/clang/Frontend/CodeGenOptions.h
+++ b/include/clang/Frontend/CodeGenOptions.h
@@ -51,6 +51,8 @@ public:
                                   /// Decl* various IR entities came from.  Only
                                   /// useful when running CodeGen as a
                                   /// subroutine.
+  unsigned ForbidGuardVariables : 1; /// Issue errors if C++ guard variables
+                                  /// are required
   unsigned FunctionSections  : 1; /// Set when -ffunction-sections is enabled
   unsigned HiddenWeakTemplateVTables : 1; /// Emit weak vtables and RTTI for
                                   /// template classes with hidden visibility
@@ -128,6 +130,7 @@ public:
     DisableLLVMOpts = 0;
     DisableRedZone = 0;
     EmitDeclMetadata = 0;
+    ForbidGuardVariables = 0;
     FunctionSections = 0;
     HiddenWeakTemplateVTables = 0;
     HiddenWeakVTables = 0;