Implements parsing and emitting of .cfi_window_save in MC.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@191431 91177308-0d34-0410-b5e6-96231b3b80d8

2 files changed, 8 insertions, 1 deletions

diff --git a/include/llvm/MC/MCDwarf.h b/include/llvm/MC/MCDwarf.h
index 7a06cc0..65b920b 100644
--- a/include/llvm/MC/MCDwarf.h
+++ b/include/llvm/MC/MCDwarf.h
@@ -290,7 +290,8 @@ public:
     OpEscape,
     OpRestore,
     OpUndefined,
-    OpRegister
+    OpRegister,
+    OpWindowSave
   };
 
 private:
@@ -364,6 +365,11 @@ public:
     return MCCFIInstruction(OpRegister, L, Register1, Register2);
   }
 
+  /// \brief .cfi_window_save SPARC register window is saved.
+  static MCCFIInstruction createWindowSave(MCSymbol *L) {
+    return MCCFIInstruction(OpWindowSave, L, 0, 0, "");
+  }
+
   /// \brief .cfi_restore says that the rule for Register is now the same as it
   /// was at the beginning of the function, after all initial instructions added
   /// by .cfi_startproc were executed.
diff --git a/include/llvm/MC/MCStreamer.h b/include/llvm/MC/MCStreamer.h
index 8cb5c49..a5f8bc0 100644
--- a/include/llvm/MC/MCStreamer.h
+++ b/include/llvm/MC/MCStreamer.h
@@ -578,6 +578,7 @@ public:
   virtual void EmitCFISignalFrame();
   virtual void EmitCFIUndefined(int64_t Register);
   virtual void EmitCFIRegister(int64_t Register1, int64_t Register2);
+  virtual void EmitCFIWindowSave();
 
   virtual void EmitWin64EHStartProc(const MCSymbol *Symbol);
   virtual void EmitWin64EHEndProc();