Track the compact unwind encoding for when we are unable to generate compact unwind information.

Compact unwind has an encoding for when we're not able to generate compact
unwind and must generate an EH frame instead. Track that, but still emit that CU
encoding.

llvm-svn: 179220

1 files changed, 10 insertions, 1 deletions

diff --git a/llvm/include/llvm/MC/MCObjectFileInfo.h b/llvm/include/llvm/MC/MCObjectFileInfo.h
index c8d748420e3..a5853b602c8 100644
--- a/llvm/include/llvm/MC/MCObjectFileInfo.h
+++ b/llvm/include/llvm/MC/MCObjectFileInfo.h
@@ -46,10 +46,15 @@ protected:
   unsigned FDEEncoding;
   unsigned FDECFIEncoding;
   unsigned TTypeEncoding;
-  // Section flags for eh_frame
+
+  /// Section flags for eh_frame
   unsigned EHSectionType;
   unsigned EHSectionFlags;
 
+  /// CompactUnwindDwarfEHFrameOnly - Compact unwind encoding indicating that we
+  /// should emit only an EH frame.
+  unsigned CompactUnwindDwarfEHFrameOnly;
+
   /// TextSection - Section directive for standard text.
   ///
   const MCSection *TextSection;
@@ -201,6 +206,10 @@ public:
   }
   unsigned getTTypeEncoding() const { return TTypeEncoding; }
 
+  unsigned getCompactUnwindDwarfEHFrameOnly() const {
+    return CompactUnwindDwarfEHFrameOnly;
+  }
+
   const MCSection *getTextSection() const { return TextSection; }
   const MCSection *getDataSection() const { return DataSection; }
   const MCSection *getBSSSection() const { return BSSSection; }