Set function attribute llvm::Attribute::NoRedZone appropriately.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@72902 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/CGCall.cpp b/lib/CodeGen/CGCall.cpp
index ea0b887..954ac53 100644
--- a/lib/CodeGen/CGCall.cpp
+++ b/lib/CodeGen/CGCall.cpp
@@ -21,6 +21,7 @@
 #include "clang/AST/DeclCXX.h"
 #include "clang/AST/DeclObjC.h"
 #include "clang/AST/RecordLayout.h"
+#include "clang/Frontend/CompileOptions.h"
 #include "llvm/ADT/StringExtras.h"
 #include "llvm/Attributes.h"
 #include "llvm/Support/CallSite.h"
@@ -1751,6 +1752,9 @@
       FuncAttrs |= llvm::Attribute::ReadOnly;
   }
 
+  if (CompileOpts.DisableRedZone)
+    FuncAttrs |= llvm::Attribute::NoRedZone;
+
   QualType RetTy = FI.getReturnType();
   unsigned Index = 1;
   const ABIArgInfo &RetAI = FI.getReturnInfo();