vendor/llvm/llvm-trunk-r375505vendor/llvm

1 files changed, 8 insertions, 0 deletions

diff --git a/lib/Target/ARM/ARMMachineFunctionInfo.h b/lib/Target/ARM/ARMMachineFunctionInfo.h
index 90d794cd27b1..bb136e92329b 100644
--- a/lib/Target/ARM/ARMMachineFunctionInfo.h
+++ b/lib/Target/ARM/ARMMachineFunctionInfo.h
@@ -16,6 +16,7 @@
 #include "llvm/ADT/DenseMap.h"
 #include "llvm/ADT/SmallPtrSet.h"
 #include "llvm/CodeGen/MachineFunction.h"
+#include "llvm/IR/GlobalVariable.h"
 #include "llvm/Support/ErrorHandling.h"
 #include <utility>
 
@@ -130,6 +131,10 @@ class ARMFunctionInfo : public MachineFunctionInfo {
   /// The amount the literal pool has been increasedby due to promoted globals.
   int PromotedGlobalsIncrease = 0;
 
+  /// True if r0 will be preserved by a call to this function (e.g. C++
+  /// con/destructors).
+  bool PreservesR0 = false;
+
 public:
   ARMFunctionInfo() = default;
 
@@ -247,6 +252,9 @@ public:
   }
 
   DenseMap<unsigned, unsigned> EHPrologueRemappedRegs;
+
+  void setPreservesR0() { PreservesR0 = true; }
+  bool getPreservesR0() const { return PreservesR0; }
 };
 
 } // end namespace llvm